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ʱ䣺2013-05-12 4909


ڽṹС˵Ķഫλ㷨

1, ϲ1, ˺2, ӱ

(1. վ̴ѧѶѧԺ, 7100772. 95971, ˮ 432701; 3. 95986, 100843)yfKϵͳѧҳ
ժҪಿάλʱΪøⲢСʶԹ۲Ӱ죬˴󳡾¿ǵʵάռ۲ⶨλģͣ˴˳ںϲϢķλṹС˶λ㷨㷨ȸݸķλϢʹýṹС˷λȻù۲ģںϸľ߶λȲյõĿλùơʵ֤˸÷ڶಿ2D¶άռĿ궨λʵԺЧԣڹáyfKϵͳѧҳ
ؼʣഫĿάλںϣṹСyfKϵͳѧҳ
ͼţTN953.7; TN959.6   ױʶ룺A   ±ţ1004-731X (2013) 04-0668-06yfKϵͳѧҳ
Multi-sensor Location Algorithm Based on Structured Total Least Squared MethodyfKϵͳѧҳ
LEI Yu1, FENG Xin-xi1, PAN Hai-feng2, ZHU Can-bin3yfKϵͳѧҳ
(1. Telecommunication Engineering Institute, Air Force Engineering University, Xian 710077, China;yfKϵͳѧҳ
2. Unit 95971 of PLA, Guangshui 432701, China; 3. Unit 95986 of PLA, Beijing 100843, China)yfKϵͳѧҳ
Abstract: The problems of estimation and accuracy for target location in 2D sensor network with multi- sensors were investigated. In order to make full use of the measurements from all the observations and reduce the influence of the Earth curvature on the measurement, an observation location model in 3D space was established for multi-sensor network, and a fusion location algorithm based on Structured Total Least Squared method was proposed. Firstly, a preliminary location was decided by Structured Total Least Squared method with bearing-only measurements form each sensor. The range measurements were fused by the proposed observation model to improve the location accuracy and the final location estimation for the target was fixed on. The efficiency and superiority of the proposed location algorithm for the target in 3D space can be confirmed by simulation results.yfKϵͳѧҳ
Key words: multi-sensor network; 3-D location; fusion; structured total least squaredyfKϵͳѧҳ

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ֲʽԿеϵͳоyfKϵͳѧҳ
ѧ¡1, 2, 3yfKϵͳѧҳ
(1.չѧԺָϵ, ̨ 264001; 2.չѧԺϵ, ̨ 264001;yfKϵͳѧҳ
3.չѧԺв, ̨ 264001)yfKϵͳѧҳ
ժҪڸӷֲʽսԿϵͳҪǿĵϵͳϵͳеӡӷֲԿϵͳ˵ϵͳĻصҪ󣻴ǰʼСĸʱκϵͳ漶ڵ㼶ʵ弶ĸλϵͳ˵ϵͳĹܣ̨λɼ߼ṹɼ书˵ϵͳṹص˵ϵͳԭ빦ܣ󣬽ӦõDZͧ뺽շDZԿϵͳƿУȡЧyfKϵͳѧҳ
ؼʣϵͳ˫߶Կ棻ֲ棻սyfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0674-07yfKϵͳѧҳ
Research on Directing & Control System in Distributed Interactive Counter-simulationyfKϵͳѧҳ
HOU Xue-long1, XU Jun-ming2, WANG Wen-yun3yfKϵͳѧҳ
(1. Comand Department of Naval Aeronautic and Astronautical University, Yantai 264001, China;yfKϵͳѧҳ
2. No.7 Department of Naval Aeronautic and Astronautical University, Yantai 264001, China;yfKϵͳѧҳ
3. Research Department of Naval Aeronautic and Astronautical University, Yantai 264001, China)yfKϵͳѧҳ
Abstract: Complex distributed interactive counter- simulation (DICS) system required powerful directing & control system (DCS) so as to direct, monitor, control and manage the simulation system. First, the basic concept and characteristic of DCS was analyzed based on military requirements of DICS. Second, the detail function of DCS was discussed from four periods (drilling preparation, drilling initialization, underway drilling and drilling end) and four functionary places (total simulation system, single side, node and entity). Third, the whole framework was designed from two aspects of simulation nodes logical structure and software components function. The principle and function of directing sub-system in DCS was analyzed emphatically. Finally, the implementation approach was applied to submarine and aviation antisubmarine force simulation system and it has been proved to be effective.yfKϵͳѧҳ
Key words: directing & control system (DCS); two sides counter-simulation; distributed simulation; warfare simulationyfKϵͳѧҳ

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˫վܻyfKϵͳѧҳ
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(ϺӦüѧԺȫϵ, Ϻ 200235)yfKϵͳѧҳ
ժҪ˳վʽ⣬ͨ½Žϴ졣ijվķ⣬CFDģⳡģͽе˳վԵģԲͬΣճ»վڵɢ˶ɽ˷о֤ԭƵЧԡִͨͳķģʽܺܺõĿӣӦܻƵԭԳվķϵͳ˸ƣ˵վϵͳﵽ˶Իпƺͱ֤ԱȫɢĿģȽʵCFDֵģ͹˼ɵĻֵƽ̨иóվķϵͳƽģ˾и߶ʵеĵվӹ̡⣬ͨо֣ͳ̷ٺָнϴӰ⣬̷ͬϵͳģʽɢԱȫɢҲҪӰ졣yfKϵͳѧҳ
ؼʣվCFDģ⣻ʵܻyfKϵͳѧҳ
ͼţTU972; X924      ױʶ룺A      ±ţ1004-731X (2013) 04-0681-06yfKϵͳѧҳ
Performance-based Fire Smoke Virtual Reality SimulationyfKϵͳѧҳ
and Analysis of Exchanging Subway StationyfKϵͳѧҳ
YI Sai-liyfKϵͳѧҳ
(Shanghai Institute of Technology, Shanghai 200235, China)yfKϵͳѧҳ
Abstract: The fire smoke characteristics, in exchanging subway station, are different from other underground buildings. An exchanging subway station of Beijing was chosen as case study. Utilizing the large eddy simulation software-FDS, the diffusion process of different fire scene was simulated and calculated, and the effect of smoke control, air distribution and the impact on safety egress were analyzed to validate the fire purging mode. According to the simulation results, the smoke spread characteristics and the impact on occupants evacuation were studied. Then, a 3D virtual reality simulation was performed to represent the variation of the fire temperature and the sickness of the smoke layer vividly. Results show that the old design of smoke control system in this station can not satisfy the request of evacuation during the fire. By the renovation design, the smoke control system was improved to satisfy the requirement of people evacuation completely.yfKϵͳѧҳ
Key words: exchanging subway station; fire smoke; CFD Simulation; virtual reality; performance-based fire protection designyfKϵͳѧҳ

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еģоչyfKϵͳѧҳ
1,2, ˽1,2yfKϵͳѧҳ
(1.򹤳صʵ, 100094; 2.йԱѵ, 100094)yfKϵͳѧҳ
ժҪѵʵҽѧѵҪӦá⵼ܽУܵʵʱԼʵҪԵϸص㣬о˽Եܵļֵģʵ㵯ģ͡ԪģͼԸģ͵ȣ˸ַģ͵Ļ˼롢ؼȱ㣬̽δķչӦչyfKϵͳѧҳ
ؼʣģܣ˿΢ѵyfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0687-06yfKϵͳѧҳ
Research Progress on Physically-based ModelsyfKϵͳѧҳ
of Guidewire/Catheter Simulation for Virtual InterventionyfKϵͳѧҳ
HUANG Peng1,2, CHAO Jian-gang1,2yfKϵͳѧҳ
(1. Science and Technology on Human Factors and Engineering Laboratory, Beijing 100094, China;yfKϵͳѧҳ
2. China Astronaut Research and Training Center, Beijing 100094, China)yfKϵͳѧҳ
Abstract: Virtual surgery training is an important application of virtual reality in modern medicine fields. The real-time deformation and force-feedback of the catheter play an important role in the catheter intervention simulator. The research achievements and progress of several physically-based models were introduced, including hybrid mass-spring model, FEM model, elastic rod model and so on, and the basic principles, the key process, advantages and disadvantages respectively were analyzed. Finally, a comparison of these models was carried out and an evaluation of the state of the art and the future of virtual intervention were performed.yfKϵͳѧҳ
Key words: physically-based modeling; catheter; guidewire; minimally invasive surgery; virtual surgery trainingyfKϵͳѧҳ

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STAPĿлĿⷽоyfKϵͳѧҳ
1, ÷2, ʱ1yfKϵͳѧҳ
(1.й񺽴ѧźͼصʵ, 3003002.йϵнͨ, ɶ 610202)yfKϵͳѧҳ
ժҪڻĿزĶƵʱ仯(߶)˳ĿʱӦ(Space-Time Adaptive ProcessingSTAP)ĿļЧܲһֻƥ˲ĿлĿⷽ÷ͨӿռͶӰӲȻƥ˲ĿĶ߶вܹĿڶ߶£ĶĿ÷ܹǿ״ԿлĿļyfKϵͳѧҳ
ؼʣĿꣻ״ʱĿ⣻߶yfKϵͳѧҳ
ͼţTN957      ױʶ룺A      ±ţ1004-731X (2013) 04-0693-06yfKϵͳѧҳ
Detection of Maneuvering Target and Simulation Study via Space-Time Adaptive ProcessingyfKϵͳѧҳ
LI Hai1, WANG Dong-mei2, WU Ren-biao1yfKϵͳѧҳ
(1. Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China;yfKϵͳѧҳ
2. Southwest Regional Air Traffic Management Bureau of Civil Aviation of China, Chengdu 610202, China)yfKϵͳѧҳ
Abstract: Due to the time-varying Doppler frequency of maneuvering target, the conventional STAP is ineffective for maneuvering target detection. The method named modified matched filter was proposed. The method combined a signal subspace clutter rejection algorithm with a modified matched filter compensating for the Doppler migration, which could detect the target with Doppler migration efficiently. Simulation results demonstrate that this method can enhance maneuvering target detection capability of the airborne radar.yfKϵͳѧҳ
Key words: maneuvering target; airborne radar; STAP; target detection; Doppler migrationyfKϵͳѧҳ

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A-GCDPԵľ̬ܷͬyfKϵͳѧҳ
, Ԫ, ž, ϲyfKϵͳѧҳ
(ݴѧѧ뼼ѧԺ 215006)yfKϵͳѧҳ
ժҪȫЧľ̬ܷͬƼ㻷ҪӦáеľ̬ܷͬԿɹ̷ҼӽܻƲʹӦ÷ΧܴܵơЩ⣬A-GCDPԼĻϣһµľ̬ܷͬͨİȫԹԼΪA-GCDP⣬֤ǰȫġͬ෽ȣ·Կɹ̼򵥣Կȶ̣ӽٶȿҼܻƽΪ̬ͬڲԪ̬ͬͬʱһԿԶάľмܡʵһ֤·нϺõļӽܣһʵõľ̬ܷͬyfKϵͳѧҳ
ؼʣ̬ͬ; ̬ͬ; ; CPAȫyfKϵͳѧҳ
ͼţTP309.2      ױʶ룺A      ±ţ1004-731X (2013) 04-0699-05yfKϵͳѧҳ
Matrix Homomorphic Encryption SchemeyfKϵͳѧҳ
Based on Hardness of Approximate Greatest Integer Common Divisors ProblemsyfKϵͳѧҳ
ZHU Yan-qin, JIN Fang-yuan, ZHANG Juan, LUO Xi-zhaoyfKϵͳѧҳ
(School of Computer Science and Technology, Soochow University, Suzhou 215006, China)yfKϵͳѧҳ
Abstract: An efficient and secure matrix homomorphic encryption scheme has a number of important applications. The existed matrix homomophic encryption schemes have defects such as complex key- generation process, unflexible encryption mechanism. To solve these problems, based on the hardness of A-GCDP problems, a new matrix homomorphic encryption scheme was proposed. Its security was proved by reducing it to solve A-GCDP problems. Compared with the existing matrix homomorphic encryption scheme, the new scheme enjoys easy key generation process, shorter keys, simple encryption/decryption process and more flexible encryption mechanism. The computation among inner elements satisfies homomorphism, and a pair of keys can be applied in any dimension of matrix. Experiment results show that the new scheme has good performance in encryption and decryption. Its a practical matrix homomorphic encryption scheme.yfKϵͳѧҳ
Key words: homomorphic encryption; matrix homomorphic encryption; approximate greatest integer common divisor; CPA securityyfKϵͳѧҳ

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ڼ⴫Ķ̬ϱϿyfKϵͳѧҳ
ȫ1, 1, ־ǿ2, ̷2, ¶1yfKϵͳѧҳ
(1.ݴѧϢѧԺ, 225009; 2.йѧԺԶоϵͳƹصʵ, 100190)yfKϵͳѧҳ
ժҪδ֪̬»ϵͳ˶滮⣬һֱϹ滮ԡһԲζ̬ϰͨ⴫ϰԵС˷ϰԵϡιƶ̬λúʹСȡϰٶȺͷۺϿǻˡ̬ϰԼĿԹϵȷ˵˶Ա֤˰ȫкɡڴ˻ϣһ˶ϵͳδ֪̬µıӿƲԡıϿƲͨʵ֤yfKϵͳѧҳ
ؼʣϵͳϿƣϣӿyfKϵͳѧҳ
ͼţTP24      ױʶ룺A      ±ţ1004-731X (2013) 04-0704-05yfKϵͳѧҳ
Laser Sensor Based Dynamic Fitting Strategy for Obstacle Avoidance Control and SimulationyfKϵͳѧҳ
YANG Yue-quan1, HAN Fei1, CAO Zhi-qiang2, TAN Min2, JIN Lu1yfKϵͳѧҳ
(1. College of Information Engineering, Yangzhou University, Yangzhou 225009, China;yfKϵͳѧҳ
2. State Key Laboratory of Management and Control of Complex Systems,yfKϵͳѧҳ
Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China)yfKϵͳѧҳ
Abstract: Considering motion planning problem of robotic systems in uncertain dynamic environments, a collision-free planning scheme was proposed. Based on least square method, the edge frame of a dynamic obstacle was fitted by employing data sampled from laser sensor. After multi-step estimations of center position and size, the relative velocity and direction of a dynamic obstacle were obtained. An optimal direction of a robot was determined by applying the relationship among the robot, the destination position and obstacles, which made the robot operate well. Moreover, a dynamic formation control strategy for multiple robots was provided. Finally, The proposed scheme was verified by the simulations.yfKϵͳѧҳ
Key words: robotic system; obstacle avoidance; fitting; formation controlyfKϵͳѧҳ

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ƫС˻ع齨ģдyfKϵͳѧҳ
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(ϴѧѧԺ, 214122)yfKϵͳѧҳ
ժҪƫС˻عĽģӦõдϢУһµдֱӿ, DCT, DWTȡдͼͳΪģԱдͼǶıΪƫС˻ع齨ͳǶı֮ĹϵģΪд3ֵ͵JPEGд㷨F5, outguess, MB1дͼд棬ʾķܿ׼ȷعJPEGдͼϢǶıʡyfKϵͳѧҳ
ؼʣдƫС˻ع飻ģǶıyfKϵͳѧҳ
ͼţTP391      ױʶ룺A      ±ţ1004-731X (2013) 04-0709-05yfKϵͳѧҳ
Quantitative Steganalysis Based on PLSR Modeling MethodyfKϵͳѧҳ
SUN Zi-wen, LI HuiyfKϵͳѧҳ
(School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China)yfKϵͳѧҳ
Abstract: The modeling method based on partial least square regression was applied to estimate the secret message length in steganalysis. A novel quantitative steganalysis was proposed. In this scheme, statistical features of stego images, which were extracted in spatial domain, DCT domain and DWT domain respectively, were used as independent variables, the relative embedding change rates of stego images were serve as dependent variables, and the partial least squares regression was applied to establish mapping model between statistical features and embedding change rates. The established model was called quantitative stegangalyzer. F5, outguess and MB1 are three typical steganographic algorithms, and the proposed scheme was experimented on them. Simulation results show that the scheme proposed has fast speed and good performance when used to predict embedding change rates.yfKϵͳѧҳ
Key words: quantitative steganalysis; partial least squares regression; modeling; embedding change rateyfKϵͳѧҳ

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зۿ۵ĵķ·оyfKϵͳѧҳ
, , ΰyfKϵͳѧҳ
(ѧϢѧ빤ѧԺ̹ҵۺԶصʵ, 110819)yfKϵͳѧҳ
ժҪӵķӦ̽ǶȣڿǵӦ̺ת˽ڵۺԼۿۻϣ˵㵽ķ·ģ滮ģ͡ģϣѡ·ͬʱѡӦ̵ص㣬˫б䳤ƵĻŴ㷨Ŵ㷨ǶK-·Ŵ㷨ȽϣЧʺϾнϴߡyfKϵͳѧҳ
ؼʣķ·⣻ģ滮ۣĻŴ㷨yfKϵͳѧҳ
ͼţTP278; TP29      ױʶ룺A      ±ţ1004-731X (2013) 04-0714-08yfKϵͳѧҳ
Research on Fourth Party Logistics Routing Problem with Cost DiscountyfKϵͳѧҳ
CUI Yan, HUANG Min, WANG Xing-weiyfKϵͳѧҳ
(State Key Laboratory of Synthetical Automation for Process Industries,yfKϵͳѧҳ
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China)yfKϵͳѧҳ
Abstract: From the viewpoint of a Fourth Party Logistics (4PL) provider, by considering the comprehensive capacity of Third Party Logisitics (3PL) suppliers and transit nodes, and the cost discount in multi-task, a single-source multi-destination 4PL routing problem was described and a fuzzy programming model was established. According to the characteristics of the model, a Memetic Algorithm (MA) with double arrays encoding method was designed. The numerical experiments show that the MA is a better algorithm in comparison with the genetic algorithm and the K-shortest path algorithm embedded genetic algorithm.yfKϵͳѧҳ
Key words: fourth party logistics; routing problem; fuzzy programming; credibility theory; memetic algorithmyfKϵͳѧҳ

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ڲԤMIMO״MVDRγ㷨yfKϵͳѧҳ
, ŽyfKϵͳѧҳ
(ӹѧԺ, Ϸ 230037)yfKϵͳѧҳ
ժҪͳMIMO״ķͨȫ䣬ȤĿڽСĿΧڣȫ˴Ĺ˷ѣӶ²γŸȽͣһ㣬һֻڷ䲨ԤMIMO״MVDRγ㷨㷨ö׶滮Ƴͨ䲨Ԥʹ书ʾۼڸȤͬʱԤĵʸתԣȻMVDR㷨ӦγɡԤ˷书ʵʣˣڷ书ͬ£ڷ䲨ԤMIMO״MVDRγиߵŸȡyfKϵͳѧҳ
ؼʣMIMO״MVDR䲨򣻶׶滮ӦγyfKϵͳѧҳ
ͼţTN957; TN958    ױʶ룺A     ±ţ1004-731X (2013) 04-0722-05yfKϵͳѧҳ
MVDR Beamforming Algorithm Based on Beamspace Preprocessing for MIMO RadaryfKϵͳѧҳ
HONG Zhen-qing, ZHANG Jian-yunyfKϵͳѧҳ
(Electronic Engineering Institute, Anhui 230037, China)yfKϵͳѧҳ
Abstract: Traditional MIMO radar always transmits omni-directionally, however, the targets of interest are usually located within a small spatial sector, so omni-directional transmission results in a great number of transmitted power dissipation, as a result, the output signal-to-interference-plus-noise ratio (SINR) of the beamformer is reduced. To resolve this problem, a minimum variance distortionless response (MVDR) beamforming algorithm based on transmit beamspace preprocessing for MIMO radar was proposed. Firstly, the second order cone programming (SOCP) was used to design the beamspace matrix, then by transmit beamspace preprocessing, the transmitted power was focused and the new steering vectors rotational invariance property was retained, and finally the MVDR adaptive beamforming algorithm was applied to MIMO radar. Simulation results demonstrate that beamspace preprocessing increases the usage ratio of the transmitted power, so under the circumstances of the same transmitted power, the MVDR beamformers output SINR of the MIMO radar based on transmit beamspace preprocessing is greater than the traditional MIMO radar.yfKϵͳѧҳ
Key words: MIMO radar; MVDR; transmit beamspace; SOCP; adaptive beamformingyfKϵͳѧҳ

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SVMͻɫԤķɻҺ̼ԤyfKϵͳѧҳ
ܹ, , ѧyfKϵͳѧҳ
(ҵƼѧϢѧԺ, ɳ 410004)yfKϵͳѧҳ
ժҪԵ糧ɻҺ̼ԽЧԤ⣬һǶܼԤⷽȣñѧϰBPɷַнάΣΪģӦ֧ɻҺ̼ԤģͣȻΪӳɻҺ̼ݵʱԣûɫԤⷽǰʱ̷ɻҺ̼ԤģͣԤģ͵ĻϣϢصȨֵϷյķɻҺ̼ԤֵܼԤģ͵Ԥ⾫ҪڵһģͣܶԵ糧ɻҺ̼ЧԤ⡣yfKϵͳѧҳ
ؼʣBP磻֧ɫԤ⣻ϢyfKϵͳѧҳ
ͼţTP 229      ױʶ룺A      ±ţ1004-731X (2013) 04-0727-05yfKϵͳѧҳ
Integrated Prediction for Carbon Content in Fly AshyfKϵͳѧҳ
Based on Online Support Vector Machine and Grey PredictionyfKϵͳѧҳ
ZHOU Guo-xiong, LI Lin, SHEN Xue-jieyfKϵͳѧҳ
(School of Computer and Information Engineering, Central South University of Forestry & Technology, Changsha 410004, China)yfKϵͳѧҳ
Abstract: Based on the fact that the power plant carbon content in fly ash is hard to predict effectively, a nesting-intelligent-integrated prediction method was proposed from improving the prediction accuracy and adaptive ability. Firstly, the variable-learning-rate-based back propagation neural network and principal element analysis method were utilized to reduce the dimension of the input variables. Secondly, in order to improve the adaptive ability of the prediction model, the online support vector machine method was carried on to predict the carbon content in fly ash based on the above analysis results. Thirdly, for the purpose of reflecting the time correlation of carbon content in fly ash, the improved grey prediction model was used to predict the current value of carbon content in fly ash. Finally, the final carbon content in fly ash was obtained through the information entropy method for weight combination prediction. Simulation results show that the prediction precision of the intelligent integrated prediction model is higher than that of single model, and it can predict the power plant carbon content in fly ash effectively.yfKϵͳѧҳ
Key words: back propagation neural network; online support vector machine; grey prediction; information entropyyfKϵͳѧҳ

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ͼķĿ̬ǹ㷨yfKϵͳѧҳ
º1,2, 1, 1, ſ1yfKϵͳѧҳ
(1.еѧԺ, ʯׯ 050003; 2.п, 100094)yfKϵͳѧҳ
ժҪͼĿĻϢһµĻڶάͼеķĿ̬ǹ㷨㷨ϷĿṹص㣬ͼпٻ⣬ĿĻͻ̶ȣӦ̬ģͿ⣬ʽö̬ģƥԭĿ̬ǹơ㷨˴̬ģͿäĿԣС˶̬ģĹģƥģ͵ٶȣڱ֤̬ƾȵͬʱʵʱԡyfKϵͳѧҳ
ؼʣͼ⣻Ӧ̬ģͿ⣻ʽ̬ǹyfKϵͳѧҳ
ͼţTN919      ױʶ룺A      ±ţ1004-731X (2013) 04-0732-05yfKϵͳѧҳ
Estimating Algorithm of Attitude Angles of Flying TargetyfKϵͳѧҳ
Based on Image Maneuver DetectionyfKϵͳѧҳ
CHEN Hai1,2, SHAN Gan-lin1, JI Bing1, ZHANG Kai1yfKϵͳѧҳ
(1. Ordnance Engineering College, Shijiazhuang 050003, China; 2. Beijing Aerospace Control Center, Beijing 100094, China)yfKϵͳѧҳ
Abstract: Based on the target maneuver detection in the image, a novel estimating algorithm of attitude angles of flying target was proposed based on image sequences. The adaptive dynamic model library was built according to the maneuver orientation and magnitude that inferred from the target rapid maneuver detection in the image, and the heuristic searching method was proposed, finally, attitude angles were estimated based on the principle of dynamic model matching, which avoided the blindness to build the model library, the size of the dynamic model library was reduced, and the searching speed of optimal matching model was improved. The test shows that the proposed algorithm improves the real-time performance under the same precision performance to the attitude estimation.yfKϵͳѧҳ
Key words: image maneuver detection; adaptive dynamic model library; heuristic searching method; attitude angles estimationyfKϵͳѧҳ

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LFM״ܼĿزԽģоyfKϵͳѧҳ
, , Է, Ф˳ƽyfKϵͳѧҳ
(Ƽѧӿѧ빤ѧԺ, ɳ 410073)yfKϵͳѧҳ
ժҪܼĿļͷֱǵǰ״\ٵǰؿͽ񣬶жزԵķоǽǰͻоԵƵ״ܼĿزźŵķȺλԣ˶ĿزźģͣԱ˫״ۣԲͬ˷ʵ顣ͬһֱ浥ԪڣĿĻزᷢɺϳɣĿλáȡλı仯ʹúϳɺĻزƵ׷䣻ͬʱֻҪĿ֮ھѹźڵλԱϵĿyfKϵͳѧҳ
ؼʣܼĿꣻزԣԵƵģyfKϵͳѧҳ
ͼţTN955      ױʶ룺A      ±ţ1004-731X (2013) 04-0737-05yfKϵͳѧҳ
Modeling of Multiple Unresolved Targets Echo Characteristics for LFM Pulse RadaryfKϵͳѧҳ
MIN Tao, WANG Xiang, ZHAO Feng, XIAO Shun-pingyfKϵͳѧҳ
(Institute of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)yfKϵͳѧҳ
Abstract: Detection and discrimination of multiple unresolved targets is a frontier topic and pressing task in radar technology field, of which the analysis of multiple unresolved targets echo characteristics is the basis and precondition for solving other problems. Multiple targets echo magnitude and phase characteristics of linear frequency modulation (LFM) pulse radar were studied, multiple targets echo signal models were established and were compared with bistatic radar, simulation experiments based on different scenarios were presented. It is indicated by simulation results that, when multiple unresolved targets exist, multiple unresolved targets echoes synthesize coherently, target positions, magnitudes and phases will result in echo spectrum aberration; at the same time, when target ranges are different between each other, the main lobs phase of LFM pulse compression output changes tempestuously, other than single target case.yfKϵͳѧҳ
Key words: multiple unresolved targets; echo characteristics; LFM; modelingyfKϵͳѧҳ

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ƵʹƵһͬƵźżȨں㷨yfKϵͳѧҳ
Ф1, Ϳ1, 1, 2yfKϵͳѧҳ
(1.ڹѧԺϢϵ 4013112.ɶӻеߵרѧУ, ɶ 611730)yfKϵͳѧҳ
ժҪΪߵ¶ʱźŵƵʹƾȣⳤȵźţһͬƵźżȨں㷨ȣͬƵźŵĶƵģͣΣλԺԵλͬƵźƵ׽мȨںϣʹȨںϺƵ׽λźƵס׷ȨںϺƵףø߾ȵƵʹֵʵзȣ㷨ǿԺãƵʹƾȸߡyfKϵͳѧҳ
ؼʣƵʹƣȨںϣͬƵźţȣ㷨yfKϵͳѧҳ
ͼţTN957.51      ױʶ룺A      ±ţ1004-731X (2013) 04-0742-06yfKϵͳѧҳ
Weight-fusion Algorithm for Frequency Estimation of Co-frequency SignalyfKϵͳѧҳ
XIAO Wei1, TU Ya-qing1, LIU Liang-bing1, LV Lin2yfKϵͳѧҳ
(1. Department of Information Engineering, Logistical Engineering University, Chongqing 401311, China;yfKϵͳѧҳ
2. Chengdu Electromechanical College, Chengdu 611730, China)yfKϵͳѧҳ
Abstract: In order to improve the frequency estimation of any length sinusoid signal at low signal-to- noise ratio (SNR), a frequency estimation algorithm based on weight-fusion of the co-frequency signal was proposed. Firstly, the definition of the co-frequency signal and its spectrum model were given. Secondly, the phase compensating matrix was constructed, which could make phases coherent and noise reduction. And the spectrum of the co-frequency signal was weight-fused by this proposed matrix to turn almost the same as the spectrum of the phase-coherent signal. Consequently, high frequency estimation precision could be obtained through spectral peak searching of the weight-fusion spectrum. Algorithm simulation results show that this proposed algorithm has strong noise immunity, good universality and high precision of frequency estimation compared with the present methods.yfKϵͳѧҳ
Key words: frequency estimation; weighted fusion; co-frequency signal; noise reduction; low signal-to- noise ratio; algorithm simulationyfKϵͳѧҳ

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ϵͳʽµ㷨ĸĽyfKϵͳѧҳ
Ծ, ֣ɭ, ÷, yfKϵͳѧҳ
(ɽѧӼƼо, 麣 519082)yfKϵͳѧҳ
 yfKϵͳѧҳ
ժҪӹµٶȺͲĽǶȳ˹ϵͳгʽµ㷨ص㣬DSPӦûһָĽ㷨㷨ڱ㷨ļ򵥺͹µٵͬʱܹͲ͵ѹ֮λԵ˲ϵͳĵʵӦüֵyfKϵͳѧҳ
ؼʣµ⣻ʽµ㷨yfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0748-05yfKϵͳѧҳ
Improvement of Active Phase-shifting Islanding Detection AlgorithmyfKϵͳѧҳ
in Photovoltaic Grid-Connected SystemsyfKϵͳѧҳ
CHEN Yue, ZHENG Shou-sen, QI Xin-mei, WANG FeiyfKϵͳѧҳ
(Institute of Power Electronics and Control Technologies, Sun Yat-sen University, Zhuhai 519082, China)yfKϵͳѧҳ
Abstract: From the point of detection speed and power quality, common active phase-shifting islanding detection algorithms of grid-connected PV system were analyzed, and an improved algorithm for DSP applications was proposed. Simulation results show that the algorithm is fast due to its simplicity and can reduce phase difference between the output current and the grid voltage so as to improve the power quality. The algorithm has a good application potential in practical grid-connected PV system.yfKϵͳѧҳ
Key words: photovoltaic grid-connected system; islanding detection; active phase-shifted detection algorithm; simulationyfKϵͳѧҳ

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Ҷ任ǸϵͳķоyfKϵͳѧҳ
ʩ, ܴ, Ȫ, yfKϵͳѧҳ
(пƼѧƿѧ빤ϵ, 人 430074)yfKϵͳѧҳ
ժҪڷ˸Ҷ任ǸϵͳĹԭӦصĻϣһָϵͳĽģ·Saber£ģͿMASTԣȦDSPⷴPWMģͣʵ˹⡢һ廯ĸϵͳƷ档ϵͳ˫ջPIڣʵֹ̲ٶȵĸȶԸ١ͬʱϵͳӦû΢񶯸ŷ档֤˸ýģĺЧԣΪʵϵͳṩ˷㡣yfKϵͳѧҳ
ؼʣƣSynopsys Saberźŷ棻΢yfKϵͳѧҳ
ͼţTP391      ױʶ룺A      ±ţ1004-731X (2013) 04-0753-07yfKϵͳѧҳ
Simulation on Interference Control System in Fourier Transform SpectrographyfKϵͳѧҳ
SHI Yu-feng, ZHOU Chun-jie, YIN Quan, ZHOU Yong-pengyfKϵͳѧҳ
(Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)yfKϵͳѧҳ
Abstract: A novel modeling and simulation for the interference control was proposed based on the analysis of the operation principle and application characteristics of the Fourier transform spectrometer. Under the Saber environment, the simulation models of voice coil motor, DSP controller, feedback laser and PWM driver circuit were built by the models and MAST language, and the simulation with optical- electro-mechanical integration was carried out. In the double closed loop control system, the system tracked the desired optical path difference velocity stably with PI control strategy. Meanwhile, the disturbance caused by micro-vibration was simulated according to its application environment. The simulation results verify the rationality and effectiveness of the model of system. It provides the conveniences of design and debug for the physical system.yfKϵͳѧҳ
Key words: interference control; synopsys saber; mix-signal simulation; micro-vibrationyfKϵͳѧҳ

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DZ802.11ľȷģyfKϵͳѧҳ
ΰ1,2, Ժ1, ɼ1, κ1, л2yfKϵͳѧҳ
(1.Ƽѧӿѧ빤ѧԺ, ɳ 4100732.ϵӵżо, ɶ 610041)yfKϵͳѧҳ
ժҪнڵмԼӰо״νӦڷDZDCFģ͵Ľ˷DZµķʱģͲM/G/1Ŷģͷʱʵ֤˶мڷDZ¸Ӱ졣ͨʵֵĶԱȣ֤˷ģ͵׼ȷԡyfKϵͳѧҳ
ؼʣIEEE 802.11DZͣʱ䣻ģyfKϵͳѧҳ
ͼţTP393.01      ױʶ룺A      ±ţ1004-731X (2013) 04-0760-09yfKϵͳѧҳ
Accurate Analytical Model for IEEE 802.11-based Networks under Nonsaturated ConditionyfKϵͳѧҳ
SONG An1,2, ZHAO Hai-tao1, WANG Shan1, WEI Ji-bo1, XIE Yan2yfKϵͳѧҳ
(1. College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;yfKϵͳѧҳ
2. Southwest Electronics and Telecommunication Technology Research Institute, Chengdu 610041, China)yfKϵͳѧҳ
Abstract: Queues coupling and its influence to wireless networks performance were studied, and were applied in building the analytical model of DCF mechanism under nonsaturated condition. The nonsaturated analytical model of service time was developed and based on which the delay and throughput of the network were analyzed considering M/G/1 queuing model. Simulation results demonstrate the influence brought by queues coupling under nonsaturated condition. The accuracy of the proposed model was validated through comparing the numerical results and the simulation results.yfKϵͳѧҳ
Key words: IEEE 802.11; nonsaturation; service time; queuing modelyfKϵͳѧҳ

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ӽĤȼϵϵͳģyfKϵͳѧҳ
1,2,3, ־1,2, 1,2, ͩ1,2,3yfKϵͳѧҳ
(1.ͬôѧѧԺ, Ϻ 201804; 2.ͬôѧԴ, Ϻ 201804; 3.ͬôѧеѧԺ, Ϻ 201804)yfKϵͳѧҳ
ժҪΪоӽĤȼϵϵͳˮȹԣijʵϵͳˮʽĻģͣʵݶģͽ֤Matlab/Simulinkƽ̨·˿ȴҺ¶ȡȴҺ¶ȶȴЧӰ졣(1)ģ͵ʵǺϣģ;нϸߵĿɿԣ(2)ڿ¶ȺȴЧӰϴ(3)һΧڣȴҺЧڳڿ¶ȡyfKϵͳѧҳ
ؼʣPEMFCģ棻ˮȹyfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0769-05yfKϵͳѧҳ
Modeling and Simulation Analysis of Intercooler in PEMFC SystemyfKϵͳѧҳ
SU Zhou1,2,3, YU Lin-jiong1,2, GAO Kun-peng1,2, ZHANG Tong1,2,3yfKϵͳѧҳ
(1. School of Automotive Study, Tongji University, Shanghai 201804, China; yfKϵͳѧҳ
2. Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;yfKϵͳѧҳ
3. Chinesisch-Deutsches Hochschulkolleg, Tongji University, Shanghai 201804, China)yfKϵͳѧҳ
Abstract: For investigating PEMFC systems water & heat management strategies, a physical model was developed according to a practically used water-cooled counter-flow intercooler, and the model was validated experimentally. The influences of air mass flow, coolant mass flow, air temperature and coolant temperature on the intercooler cooling effect were analyzed by applying Matlab/Simulink. The simulation results show that (1) the model outputs have good consistency with experimental date, (2) the air mass flow and inlet temperature influence the cooling effect most, (3) the outlet air temperature can be effectively controlled by the coolant mass flow within a specific range.yfKϵͳѧҳ
Key words: PEMFC; intercooler; modeling; simulation; water & heat management strategyyfKϵͳѧҳ

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״ϵͳģyfKϵͳѧҳ
, , ̽yfKϵͳѧҳ
(дعһо, Ƹ 222006)yfKϵͳѧҳ
ժҪΪо״ϵͳݻɣ˽״ϵͳҪԴöݹ̽нģ˼·ƵͳһĽ״ϵͳģ͡ص˽ͧϢе̬״Ŀ롢λǺ͸ߵͽǵIJͬӰ죬ó״̬Ӱ죬λԹϵߵͽҡҡĿ귽λҹɱ仯Ľ֤ۡ˽۵ȷԡyfKϵͳѧҳ
ؼʣ״ϵͳ̬yfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ11004-731X (2013) 04-0774-05yfKϵͳѧҳ
Modeling and Simulation Analysis of Error from Shipboard RadaryfKϵͳѧҳ
DOU Lin-tao, CHU Yang, CHENG Jian-qingyfKϵͳѧҳ
(The 716th Institute of China Shipbuilding Industry Corporation, Lianyungang 222006, China)yfKϵͳѧҳ
Abstract: In order to study the evolution of radar system error, the main source of radar system error was analyzed. Based on the idea of modeling error transfer process, a unified model of ship-based radar system error was derived. The different impact of shipboard navigation error on the radar target distance, azimuth and elevation angles was analyzed, and the following conclusions were proposed, such as the attitude error has no impact on radar ranging, azimuth angle error and heading error of linear between high and low angle error is limited by pitching angle and roll angle error, and with the target position changes according to the conclusions of the sine law. The computer simulations testify the correctness of the conclusions.yfKϵͳѧҳ
Key words: shipboard radar; system error; attitude error; error analysisyfKϵͳѧҳ

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ڼͼ۵߿ת·еоyfKϵͳѧҳ
1,2, Ź1yfKϵͳѧҳ
(1.ϴѧȽصʵ, ɳ 4100822.ĿƼѧԺ, ¦ 417000)yfKϵͳѧҳ
ժҪתϵͳ·еʵַ߿תϵͳṹڶԳѧĻϣüͼ۶߿תϵͳ·но20-simͼи߿תϵͳͼģͣüͼ۶Ե·нзִеõΪ·СyfKϵͳѧҳ
ؼʣ߿תϵͳͼۣ20-sim·yfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0779-05yfKϵͳѧҳ
Research of Steering-by-Wire Systems Road Feeling Based on Bond Graph TheoryyfKϵͳѧҳ
CHEN Xin1,2, ZHANG Gui-xiang1yfKϵͳѧҳ
(1. The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;yfKϵͳѧҳ
2. Hunan Institute of Humanities, Science and Technology, Loudi 417000, China)yfKϵͳѧҳ
Abstract: The realization method of steering systems road feeling and the structure of SBW were introduced. Based on the analysis of the vehicle dynamics, the SBWs road feeling was researched through the theory of Bond Graph. Firstly, in 20-sim Bond Graph Simulation software, the SWB bond graph model was proposed, and by utilizing the bond graph theory, the motor current and road feeling were analyzed and simulated. Finally, an ideally road feeling was obtained through the implementation of the motor current feedback method.yfKϵͳѧҳ
Key words: SBW system; bond graph; 20-sim; road feelingyfKϵͳѧҳ

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ҡ-תʽЭƷоyfKϵͳѧҳ
ջ, ÷, , yfKϵͳѧҳ
(ѧ ҵװṹصʵ عѧѧ ѧԺ, 116024)yfKϵͳѧҳ
ժҪо򳵻ADAMSѧģͺ˶ѧģ͵ָɻģЭƷЭƷԳƽתΪ״̬᫵˶ٶȡָر仯ԳǣӰ죬˳Эܡ⣬򳵽º͹µADAMSMATLAB/SimulinkϷ档ÿ㷨򳵵ͨܣܺģʹµ˶ЭyfKϵͳѧҳ
ؼʣתʣЭƣADAMSϷ棻ģṹyfKϵͳѧҳ
ͼţTP24      ױʶ룺A      ±ţ1004-731X (2013) 04-0784-06yfKϵͳѧҳ
Co-simulation of Traction Harmonious Control on Wheeled Lunar Rover with Rocker BogieyfKϵͳѧҳ
LI Lin-hui, WU Shu-mei, GUO Lie, ZHANG Ming-hengyfKϵͳѧҳ
(State Key Laboratory of Structural Analysis for Industrial Equipment, Faculty of Vehicle Engineering and Mechanics,yfKϵͳѧҳ
School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China)yfKϵͳѧҳ
Abstract: Based on the dynamics and the kinematics model of the lunar rover, the improved exponential approach law was adopted to design the coordination controller. Firstly, the velocity of the rover and the influence of the normal force on the traction force of wheels were integrated into the proposed controller. Secondly, the ground traction forces were optimized to minimize the slip ratio, reduce the power consumption and enhance the mobility properties by concerning the average slip ratio as the state variable. Finally, the co-simulation between ADAMS and MATLAB/Simulink was carried out. Simulation results for a wheeled rover traversing moon-like terrain slope and ditch demonstrate the effectiveness of the control algorithm and the mobility improvement, and that the proposed algorithm makes the motion of lunar rover more flexible and harmonious.yfKϵͳѧҳ
Key words: slip ratio; traction harmonious control; ADAMS; co-simulation; variable structure control with sliding modeyfKϵͳѧҳ

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ֱϵͳ˶ѧȶԵķyfKϵͳѧҳ
־1, 2yfKϵͳѧҳ
(1.ݽͨѧ繤ѧԺ, 730070; 2.Ϻͨѧе붯ѧԺ, Ϻ 200030)yfKϵͳѧҳ
ժҪ˶ֱЭϵͳĽṹģͣЧΪϵͳϵͳ˶ѧģͣЭϵͳиֱλʽʽø˶ѧԭƵſɱȾ󣻽ֱĿռλ÷ϵͳط䷽ȻûбʵķϵͳȶԡUG/ADAMS/MATLAB˷ʵƽ̨ʵ˶ģͿʵʱֱ˶˶״̬ƽyfKϵͳѧҳ
ؼʣֱ˶ѧģֱͣϵͳȶyfKϵͳѧҳ
ͼţV249.122+.2; V217+.2   ױʶ룺A   ±ţ1004-731X (2013) 04-0790-05yfKϵͳѧҳ
Simulation on Kinematics and Stability of Multi-helicopters Hoist SystemyfKϵͳѧҳ
ZHAO Zhi-gang1, LU Tian-sheng2yfKϵͳѧҳ
(1. School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;yfKϵͳѧҳ
2. School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200030, China)yfKϵͳѧҳ
Abstract: The structure of the closing-coupling multi-helicopters system was analysed that was equivalent to multi-rigid bodys flexible cable system. Subsequently, the kinematics model was analysed and position explicit expression of helicopters in the system was established. The Jocobi matrix was derivated using the rigid kinematics. The load distribution method was analysed based on the space position of helicopters. The system stability was analysed using the slope-based method. Finally, using the software UG/ADAMS/MATLAB, the simulation system was established and the simulation results reveal that the proposed kinamatics model is very good.yfKϵͳѧҳ
Key words: helicopter; kinamatics model; multi-helicopters hoist system; stabilityyfKϵͳѧҳ

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սϵͳЧSEAĽģyfKϵͳѧҳ
, Ű, , ĺyfKϵͳѧҳ
(ҵѧϢѧԺ, 710129)yfKϵͳѧҳ
ժҪսԿ̣սϵͳģͺͷϵͳģͣڴ˻ϽSEAսϵͳЧܵģ͡ģУͨʹʹתøĽijֵ㷨άռϵͳʹ켣SEAԲǿȱϸڱȱݡ˲ͬͺսϵͳЧܣͬʹͬһͺŵսϵͳЧܣ֤˸÷ȷԺЧԡyfKϵͳѧҳ
ؼ: SEA; ս; ; ģ; ϵͳЧyfKϵͳѧҳ
ͼţTJ761      ױʶ룺A      ±ţ1004-731X (2013) 04-0795-05yfKϵͳѧҳ
Modeling and Simulation of SEA MethodyfKϵͳѧҳ
for Effectiveness Analysis of Tactical Ballistic Missile SystemyfKϵͳѧҳ
QI Ling-hui, ZHANG An, GUO Feng-juan, BI Wen-haoyfKϵͳѧҳ
(School of Electronic Information, Northwestern Polytechnical Univ., Xian 710129, China)yfKϵͳѧҳ
Abstract: The assessment models of tactical ballistic missile (TMB) system using System Effectiveness Analysis (SEA) was set up and the models of TMB system and anti-missile defense system were established based on analyzing the progressing of TMB systems attack-defense confrontation. During the progressing of modeling, the request to mission attributes was interpreted into mission demand, and the improved hyperbox numerical algorithm was used in obtaining mission locus in fore-dimensional space. According to these measures, poor operability and the lack of performance capabilities for details in SEA were conquered. Based on the attack-defense confrontation examples, system effectiveness of different types of TMB was analyzed, and system effectiveness of the same types of TMB under different mission demand was analyzed. The validity and efficiency of this method proposed were proved.yfKϵͳѧҳ
Key words: System Effectiveness Analysis (SEA); Tactical Ballistic Missile (TMB); Hyperbox; Modeling and Simulation; System EffectivenessyfKϵͳѧҳ

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FDTDзǶԳƹ沨õоyfKϵͳѧҳ
,پ,yfKϵͳѧҳ
(´ѧϢѧѧԺ, 116026)yfKϵͳѧҳ
ժҪһʺϷǶԳƹ沨FDTDֵ㼤ʽڴ˻֮϶˴˥ֵAԱõӳ̶ȡʹEMPro2010˴ֵ棬ݵĻϽֵϣʽ·ǶԳƹ沨沨ѼλõĽƹʽ÷ΧyfKϵͳѧҳ
ؼʣʱ޲ַǶԳƹ沨ãEMProyfKϵͳѧҳ
ͼţTN814      ױʶ룺A      ±ţ1004-731X (2013) 04-0800-04yfKϵͳѧҳ
Research on Excitation Settings in FDTD Computation of Asymmetric Coplanar WaveguideyfKϵͳѧҳ
LI Xiao-ming, FANG Shao-jun, PEI Hui, ZHAO Yi-nayfKϵͳѧҳ
(School of Information Science and Technology, Dalian Maritime University, Dalian 116026, China)yfKϵͳѧҳ
Abstract: A method on asymmetric coplanar waveguide excitation setting in FDTD computation was proposed, and a transmission mean variable A was defined which describes the good or bad of different excitation settings. Large numerically simulations were made with EMPro2010, and the numerically fitting was done based on simulation data. Finally the formulas of excitation position for both coplanar waveguide and asymmetric coplanar waveguide and their application ranges were presented.yfKϵͳѧҳ
Key words: FDTD; ACPW; excitation setting; EMProyfKϵͳѧҳ

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ټܵ˶붯yfKϵͳѧҳ
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(ʯׯѧеѧԺ, ʯׯ 050043)yfKϵͳѧҳ
ժҪΪ˼ټܵĽṹǷͱ֤豸ȣԸټܵĽ˶Ͷѧ۷ݶض˹ټܵĶѧģͣԸټֱܷ˶Ͷ档ټܵĻеṹҪ˶Χڲᷢ˶棻ڸڸתȣټܵĸϵͷλϵͬʱԽϸߵٶȺͼٶ˶ʱڷλ͸֮أҪԸСأΪټܵĸĽṩ˿ɿݡyfKϵͳѧҳ
ؼʣ٣ת̨˶ѧѧyfKϵͳѧҳ
ͼţTP39      ױʶ룺A      ±ţ1004-731X (2013) 04-0804-05yfKϵͳѧҳ
Kinematics and Dynamics Simulation Analysis of Opto-electronic Tracking FrameyfKϵͳѧҳ
LI JieyfKϵͳѧҳ
(Mechnical Engineering College, Shijiazhuang Tiedao University, Shijiazhuang 050043, China)yfKϵͳѧҳ
Abstract: In order to verify the rationality of opto-electrical tracking frames mechanical structure and ensure precision of the opto-electrical tracking equipment, the theoretical analysis of kinematics and dynamics was done. The dynamics model of tracking frame was established based on momentum theorem. The kinetic and dynamic simulation of the tracking frame was done using the virtual prototype technology. The results show that mechanical structure of tracking frame is rational. The movement interference isnt found but the coupling moment between pitching shafting and azimuth shafting is brought out when pitching shafting and azimuth shafting rotate on high angular velocity or high angular acceleration. It affects the tracking precision of opto-electrical tracking system. The coupling moment between pitching shafting and azimuth shafting is inexistent when pitching shafting has the same moment of inertia relative to inertia principal axis of pitching shafting. So, the coupling moment can be eliminated or decreased by adding accessional weight. It provides credible theory for the opto-electrical tracking frames meliorative design.yfKϵͳѧҳ
Key words: opto-electronic tracking; turntable; kinematics; dynamics; simulationyfKϵͳѧҳ

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һֻ˶ĿISARеάعyfKϵͳѧҳ
, , , ̶yfKϵͳѧҳ
(պѧϢѧԺ, 100191)yfKϵͳѧҳ
ժҪΪ˶Ϣδ֪״Ŀάع⣬һֻĿϳɿ׾״(ISAR)ͼеľֽάعISARĻԭISAR̹ʽƵISARͶӰ󷽳ʽ˹ĶάͼɢԭĿɢάλõļͶӰϵþʽֽķӹ۲зֽάλþʵعάƽԲ׶ΪģĿ֤꣬˸㷨Ŀԣعͼ֡ԽࡢͼԽߣعԽáyfKϵͳѧҳ
ؼʣάعISAR񣻾ֽ⣻˶ĿyfKϵͳѧҳ
ͼţTP391.9; TN95     ױʶ룺A     ±ţ1004-731X (2013) 03-0809-08yfKϵͳѧҳ
Three Dimensional Reconstruction Method for Moving Target from ISAR SequencesyfKϵͳѧҳ
WANG Jun, WEN Ya-ya, YU Juan, CAI Duo-duoyfKϵͳѧҳ
(School of Electronic and Engineering of Beihang University, Beijing 100191, China)yfKϵͳѧҳ
Abstract: To solve the problem of 3D reconstruction of radar targets with unknown motion information, a matrix factorization algorithm for 3D reconstruction from ISAR sequences was proposed. Based on the mathematical relationship of the location between scattering points on the target and that on ISAR images, the algorithm formulated the ISAR imaging process and derived the ISAR imaging projection matrix that represents the 2D projection equations for scattering points on the target, as observed in the image sequence. Therefore 3D shape of the target can be reconstructed based on the factorization of the matrix. Finally, a simulation experiment using a flying tapered warhead as the target was established and the method was verified by the results, which also indicates that more images and lower noise level for reconstruction could bring significantly better performance.yfKϵͳѧҳ
Key words: three dimensional reconstruction; ISAR images; matrix factorization; moving targetyfKϵͳѧҳ

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ѻ·ȼߴԽվʩоyfKϵͳѧҳ
Ȩ,,໱yfKϵͳѧҳ
(ͨѧľѧԺ, 100044)yfKϵͳѧҳ
ժҪݱѻ·Ȼ5ҤվλùϵȻߡվΧ໥õһ廯άģͨ͡ʩ̵ķģ㣬õ˲ͬʩ׶ζԳվͨṹվڽṹվṹվṹӰ졣ݷȷIJ㲼üʩеĿֵ֤ͨȷԡyfKϵͳѧҳ
ؼʣйͨȻߣԽվʩ棻ȫyfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0817-04yfKϵͳѧҳ
Construction Simulation Study on PUHUANGYULU Gas Pipeline Crossing Subway StationyfKϵͳѧҳ
YAN Zi-quan, MA Li-heng, LIANG Qing-huaiyfKϵͳѧҳ
(School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)yfKϵͳѧҳ
Abstract: Based on the position and related characteristics of PUHUANGYULU gas pipeline and LIUJIAYAO subway station of Beijing Metro Line 5, the interactional integration 3-D model of gas pipeline, subway station and soil was established. The influences of different construction stages on ventilation structure, entrance structure, station structure, and track structure were obtained by construction simulation. The present work has laid the foundation for further study of the disposition of measuring points and the controlling value.yfKϵͳѧҳ
Key words: urban rail transit; gas pipeline; crossing subway station; construction simulation; safety assessmentyfKϵͳѧҳ

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ԽϵͳyfKϵͳѧҳ
, ƽ, ףЧ, yfKϵͳѧҳ
(ʯʹѧ繤ѧԺ, ɶ 610500)yfKϵͳѧҳ
ժҪڵڵķϵŶԽ̵ijɰܡάƽ̣ⷽǿױھԼĦ˶Խ-ױϵͳģ͡ڽģ͵ķTulsaѧʵ۽жԱ֤ĻϣμӶԽ̵ΪϵͳķΪ˷ŤظضӰСߵIJ̲ϴ統ӦˮƽƣǿʱˮƽκбֱΣķءýΪԽʩѡṩָyfKϵͳѧҳ
ؼʣԽάٽyfKϵͳѧҳ
ͼţO342      ױʶ룺A      ±ţ1004-731X (2013) 04-0821-05yfKϵͳѧҳ
Nonlinear Buckling Simulation of Drillstring SystemyfKϵͳѧҳ
During Pilot Hole Drilling in Horizontal Directional DrillingyfKϵͳѧҳ
JIA Yan-jie, JIANG Ping, ZHU Xiao-hua, ZHANG Yu-fengyfKϵͳѧҳ
(School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China)yfKϵͳѧҳ
Abstract: It is closely related to researching the nonlinear buckling behaviors of drill-string during the pilot hole drilling whether the horizontal directional drilling can be succeed. Based on the equilibrium equation of drill-string dynamics in 3-D curve well, and considering the radial constraints of borehole and the friction, the finite element model of drillstring-borehole system in horizontal directional drilling was built. Based on the comparison between the results from the new model and the tests from the Tulsa University, taking the pilot hole stage of Weihe horizontal directional drilling as an example, the nonlinear buckling behavior of the whole drillstring system was researched. The results show that the effect of torque on drillstring buckling is very small no matter sinusoidal buckling or helical buckling, and there is a great difference between the generations of sinusoidal buckling and helical buckling, when drillstring stress keeps a low level under fatigue strength, the drill string only displays as the sinusoidal buckling. In addition, comparison to the horizontal and deviated borehole sections, the buckling state at the curve section of the whole borehole is more serious. The conclusions provide guidance for the construction parameters optimization in guide hole drilling.yfKϵͳѧҳ
Key words: horizontal directional drilling; buckling; 3-D curve well; drill-string; critical axial forceyfKϵͳѧҳ

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ػŽ㴹ֱ˶оyfKϵͳѧҳ
, yfKϵͳѧҳ
(ϾպѧԶѧԺ, Ͼ 210016)yfKϵͳѧҳ
ժҪConolly۽װ˶ͨģģ(ͬС̬)µļװ˶˻ڳǰļװ˶ͻʱԻعģ͵ļװ˶ԤŽĩ˹̣ͬµĽػŽ㴹ֱ˶źͨԤͲ뵽ŽϵͳнзģоƵļװ˶ԤͲЧԶŽϵͳλٺŽӰ죬ҶԸӶŽ(ͬС̬)кܺõӦԡyfKϵͳѧҳ
ؼʣطɻ; ԶŽϵͳ; װ˶; װ˶Ԥ; װ˶yfKϵͳѧҳ
ͼţTP391.9; V249     ױʶ룺A     ±ţ1004-731X (2013) 04-0826-05yfKϵͳѧҳ
Simulation Study on Landing Point Vertical Motion in Carrier LandingyfKϵͳѧҳ
ZHANG Yong-hua, ZHOU XinyfKϵͳѧҳ
(College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)yfKϵͳѧҳ
Abstract: The general deck motion model based on the Conolly linear theory is built for simulating deck motion with different ship size and various sailing situations. Deck motion compensator based on lead network and deck motion predictor based on time series AR model are designed and are integrated into the longitudinal automatic carrier landing system (ACLS) for compensating ideal landing point vertical errors. The deck motion compensator and predictor are examined for various ideal landing point vertical motions simulated using the general deck motion model in different situations. The simulation results show that the deck motion predictor and compensator designed can effectively compensate the error caused by phase delay of automatic carrier landing system and have a desired result for complex carrier aircrafts landing environments.yfKϵͳѧҳ
Key words: carrier aircraft; automatic carrier landing system; deck motion; deck motion prediction; deck motion compensationyfKϵͳѧҳ

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·վҵ̵TCPNͨģyfKϵͳѧҳ
³Բ, Ԩ, ƺ, yfKϵͳѧҳ
(ϽͨѧͨѧԺ, ɶ 610031)yfKϵͳѧҳ
ժҪ:·վҵϵͳǽгվҵ̵Ľ·뵽õоЧɶԳվ豸ʹ״ϸеķֶδڽģ̸ӡԲ⡣·վҵϵͳ˻ڸʱɫPetri복վվͲòֱصĸվҵͨģͣڸվͲõĸվҵ̵ķ漰Żвͬҵ͵ĸվ棬ģ;мЧʸߡͨǿŻص㡣yfKϵͳѧҳ
ؼ: վ; ҵ̷; ʱɫPetri; վ޹; ͨģyfKϵͳѧҳ
ͼţTP391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0831-08yfKϵͳѧҳ
Universal High Speed Railway Station Operation Simulation ModelyfKϵͳѧҳ
Based on Timed Colored Petri NetyfKϵͳѧҳ
LU Gong-yuan, PENG Qi-yuan, YAN Hai-feng, YANG KuiyfKϵͳѧҳ
(College of Traffic and Transportation, Southwest Jiaotong University, Chengdu 610031, China)yfKϵͳѧҳ
Abstract: High speed railway station operation system simulation is an effective tool to study the station operation process (including train routing problem and arrival-departure line utilization problem, etc.) and the facility operation efficiency. The existed simulation methods are bothered by the complex and inefficient modeling process and the confined scope of application. The universal yard layout unconcerned model of passenger station operation based on timed colored petri net was built to realize the railway passenger station operation simulation and optimization which applied to the case of different train operation various in passenger station. The model has a wide range of application, flexible optimization method and high modeling efficiency.yfKϵͳѧҳ
Key words: high speed railway station; operation simulation; Timed Colored Petri Net; yard layout unconcerned; universal modelyfKϵͳѧҳ

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̬½˲ʱ˶оyfKϵͳѧҳ
ΰ1, 2, 3yfKϵͳѧҳ
(1.̼ѧѧѧԺ, 123000; 2.̴ѧԶѧԺ, 150001;yfKϵͳѧҳ
3.̼ѧӦѧԺ, 123000)yfKϵͳѧҳ
ժҪԶ̬½˲ʱ˶ϢԵӰ죬һֽ˶Ϣļʱ˺״̬½˶ܽ˲˲ʱ˶ʵʩڲ˲ʱٶϢָͨ˲üƳǸԵϵͳʵֶԲĽһǿϽת̨飬Ķ̬½˲ʱٶȲнϸߵĹʵ塣yfKϵͳѧҳ
ؼʣԵϵͳգͨ˲yfKϵͳѧҳ
ͼţU666.1      ױʶ룺A      ±ţ1004-731X (2013) 04-0839-06yfKϵͳѧҳ
Research on Measurement Method of Warship Instantaneous Line MotionyfKϵͳѧҳ
under Condition of Dynamic MotionyfKϵͳѧҳ
SUN Wei1, SUN Feng2, YANG Lin3yfKϵͳѧҳ
(1. School of Geomatics, Liaoning Technical University, Fuxin 123000, China;yfKϵͳѧҳ
2. College of Automation, Harbin Engineering University, Harbin 150001, China;yfKϵͳѧҳ
3. Application and Technology College, Liaoning Technical University, Fuxin 123000, China)yfKϵͳѧҳ
Abstract: According to the maneuverability of ship impacted by the instantaneous line motion, a novel measurement technology about was proposed. The implement scheme of instantaneous line motion was summarized and the parameter of filter was calculated. In order to improve the measurement result, the doppler log and inertial navigation system were combinated. The multi-functional platform in the laboratory was designed to testify the method. And the experiment results show that, the ships heave information can be measured accurately by the measurement technology about the heave, and the measurement method has the higher feasibility.yfKϵͳѧҳ
Key words: strapdown inertial navigation system; heave; doppler; high pass filter; simulationyfKϵͳѧҳ

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ɢռ̽㷨yfKϵͳѧҳ
, , չyfKϵͳѧҳ
(վָѧԺ, 100097)yfKϵͳѧҳ
ժҪʵʵսУҪͨʵķʽһܹﵽijһĿռ䡣ΪҪʵеÿָ궼ɢΪ޸ˮƽֵһԼ£̽зIJϡַϣӶϱըԼ㡣Ϊ⣬ָĵԣһָЧ̽ɢռ㷨ԸϵͳΪ˸ϵͳĿķģͣø㷨ʵ˶ԸϵͳɢռĸЧ̽ͨԼķ֤㷨ȷԺ͸ЧԡyfKϵͳѧҳ
ؼ֣սʵ飻ָ굥ԣɢռ䣻̽㷨ϱըyfKϵͳѧҳ
ͼţTP 391.9      ױʶ룺A      ±ţ1004-731X (2013) 04-0845-04yfKϵͳѧҳ
Exploring Algorithm for Producing Discrete Monotonic-Capability-Metric Requirement SpaceyfKϵͳѧҳ
HU Jian-wen, LI Jiang-tao, WU Zhan-yanyfKϵͳѧҳ
(Air Force Command College, Beijing 100097, China)yfKϵͳѧҳ
Abstract: In the analysis of some practical operational problems, it is necessary to do some simulation experiments to obtain a capability requirements space meeting some requirements. Generally, every capability indices in experiments should be divided into several segments and combined with each other. Therefore it is very difficult to finish the experiment calculation because of combining explosion. In order to solve this question, an algorithm, based on the monotony of capability indices, was put forward to improve the efficiency of exploring the discrete capability requirement space. An example of artillery weapon system, the simulation model of artillery weapon system attacking aerial target was constructed, and by using this algorithm, the high-efficiency exploring of the discrete requirement space of artillery weapon system was realized. The analyzing results show the validity and the high-efficiency of this algorithm.yfKϵͳѧҳ
Key words: simulation experiment of warfare; monotony of capability indices; discrete capability requirements space; exploring algorithm; combining explosionyfKϵͳѧҳ

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IMMģѡ趨yfKϵͳѧҳ
1, Ҧ˳2, 2yfKϵͳѧҳ
(1.ͧѧԺо2, 116018; 2.ͧѧԺսָϵ, 116018)yfKϵͳѧҳ
ժҪģģ͵ȷֱӰ쵽˲ٵľȣͨȽϵ͵ģͺͲͬģĽģ͵ܣȷʺ˶״̬ģ顣״õķλϢȽϲͬģ͵ĸپȣΪģеģƶΪIJʵ֤ѡģ趨IJ״Ŀ˶״̬ĸ˲yfKϵͳѧҳ
ؼʣģͣģ飻״yfKϵͳѧҳ
ͼţTB5      ױʶ룺A      ±ţ1004-731X (2013) 04-0849-06yfKϵͳѧҳ
Selection of IMMs Model Groups and PreferencesyfKϵͳѧҳ
ZHANG Yun-wen1, YAO Jing-shun2, DONG Tian-zhong2yfKϵͳѧҳ
(1. Postgraduate Team 2 of Dalian Navy Academy, Dalian 116018, China;yfKϵͳѧҳ
2. Dept. of Operational Commanding of Dalian Navy Academy, Dalian 116018, China)yfKϵͳѧҳ
Abstract: An Interacting Multiple Model (IMM) configuration which uses as it to build modules models affects tracking performance. In comparison of single model with IMM of different model groups, the best model groups of IMM were found out. Using azimuth and range acquired by two-dimensional radar, comparing tracking precision by different specific features of models, the appropriate specific features of IMM tracking filter were designed. Actual data results show that the determinate model groups and specific features are more appropriate to tracking most different movements for two-dimensional radar.yfKϵͳѧҳ
Key words: IMM; model groups; specific features; Tow-dimensional radaryfKϵͳѧҳ

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