Modern Defense Technology

Phase Simulation of High Dynamic DSSS Signal Simulator

SHENG De-wei, GAO Yang, WEN Hai

2018, 46(1): 1-6. doi:10.3969/j.issn.1009-086x.2018.01.001

Asbtract ( 309 )

References | Related Articles | Metrics

To meet the development requirements of high-precision spread-spectrum telemetry track and command (TT&C) equipment, the high-precision simulation technology of direct sequence spread spectrum (DSSS) signal is studied and the simulation technology of carrier phase is proposed based on online correction technology and linear interpolation, which avoids the simulation of improving phase precision by sacrificing resources and can simulate relative motion between a receiver and an object. The effectiveness of this algorithm has been corroborated with theoretical analysis, simulation and measured data and has been applied to certain spaceflight simulator successfully.

Design of PCM Data Real-Time Receiving System Based on LabVIEW

ZHU Jing-lai, HE Ping, HAO Da-li, MA Xiao-dong

2018, 46(1): 7-10. doi:10.3969/j.issn.1009-086x.2018.01.002

Asbtract ( 291 )

References | Related Articles | Metrics

Pulse code modulation (PCM) technique has high ability of anti-jamming and has been widely used in ground test and flight test of spacecraft. To monitor the running state of the spacecraft, it is necessary to receive and display PCM data in real-time in the test process. A design method of PCM data real-time receiving system based on LabVIEW is presented. The real-time receiving and displaying of PCM data are realized by combining the data receiving card with the host computer program. The verification shows that the system can meet the requirement of spacecraft ground test.

Hot-Swap Technology of High Availability Grade Based on CPCI Bus

LI Zheng-tian, JING Bin, GAO Shao-jie, LUO Yue, WANG Yu-jiao, TIAN Fu-qiang

2018, 46(1): 11-18. doi:10.3969/j.issn.1009-086x.2018.02.003

Asbtract ( 270 )

References | Related Articles | Metrics

The bus architecture of compact peripheral component interconnect (CPCI) has been gaining immense popularity in the area if aerospace test since its establishment by PCI industrial computer manufacturer's group (PICMG). High availability (HA) system allows measurement and control system to reduce the mean-time-to-repair (MTTR) effectively and improve the mean time between critical failures (MTBCF). CPCI bus structure is taken as an example to demonstrate a perfectly developed design schemes through discussion and research. With the way to improve the power management, the underlying design can support the HA level hot swap and hot backup function, which is possible for the measurement and control system to meet the urgent need for enhancing reliability and maintainability of the system.

Anti-Interference Efficiency Evaluation and Optimal Selection of Hybrid Spread Spectrum TT&C System

LI Guo-jing, ZHOU Chi, QIN Guo-ling

2018, 46(1): 19-26. doi:10.3969/j.issn.1009-086x.2018.01.004

Asbtract ( 261 )

References | Related Articles | Metrics

Aiming at the issue of anti-jamming efficiency evaluation of telemetry, tracking and control (TT&C) system in complex electromagnetic environment, the anti-interference evaluation index system is built with multiple performance parameters constraining from the respective of signal acquisition, tracking and communication after analyzing the structure and main performance parameters of direct sequence/frequency hopping (DS/FH) hybrid spread spectrum TT&C system, which effectively solves the problem of indeterminate consistency and attributive dispersion between different performance indexes. On this basis, an alternative scheme of index system including the maximum anti-interference efficiency mode and the minimum cost mode is proposed, and a synthetic anti-interference efficiency evaluation model based on analytic hierarchy process (AHP) and an optimal system parameter selection model based on grey correlation are respectively built according to different evaluation requirements. Simulations have demonstrated that the models proposed are feasible and effective for anti-interference evaluation and system parameter optimization.

Capability Evaluation of Ground Air-Defense System Based on Directed Evidential Network

PEI Dong, QIN Da-guo, BU Guang-zhi

2018, 46(1): 27-34. doi:10.3969/j.issn.1009-086x.2018.01.005

Asbtract ( 229 )

References | Related Articles | Metrics

Aiming at the uncertainty of the evaluation information entered in the requirement satisfactory degree evaluation of capability of ground air-defense systems, a method based on directed evidential network with conditional belief functions is proposed, which uses expert knowledge and historical information to carry on evidential network parameter modeling, i.e., the conditional belief functions are used to describe the relationship between the degree of the lower level capability satisfying the demand and the degree of the upper layer capability satisfying the demand. On this basis, the evidential network is used to predict the belief distribution of capability of the system satisfying the demand. The feasibility and effectiveness of the method are analyzed by an example.

Configuration Method of Projectile Dispersion Center of Antiaircraft Future Airspace Window Shooting

MENG Fan-dong, SHAN Gan-lin, DUAN Xiu-sheng

2018, 46(1): 35-40. doi:10.3969/j.issn.1009-086x.2018.01.006

Asbtract ( 273 )

References | Related Articles | Metrics

The principle of future airspace window shooting system is introduced, and a new projectile dispersion center configuration method, i.e. the diamond distribution method is proposed. The damage probability of airspace window shooting is given, and the effect indexes of the configuration methods are analyzed according to the mean and the uniformity of damage probability. The simulation results show that the diamond distribution method increases the target damage probability and is suitable for configuring the projectile dispersion center of future airspace window.

Initial Disturbance Effect of Vehicle-Mounted Missile Thrust Misalignment

ZHONG Zhou, MENG Ling-tao, ZENG Wei, ZENG Lu, WANG Chen-xi

2018, 46(1): 41-46. doi:10.3969/j.issn.1009-086x.2018.01.007

Asbtract ( 226 )

References | Related Articles | Metrics

Aiming to the interference problem of random factors, the effect of motor thrust misalignment on launching precision is studied. A rigid-flexible coupling model of vehicle-mounted missile vertical launch is built with the virtual prototype technology and modified Craig-Bampton method. To get the sample data of missile attitudes in different working conditions, the thrust misalignment angle parameterized dynamic simulation based on Monte Carlo method is used. The data statistical analysis based on histogram and maximum likelihood estimation is used to analyze the distributions of related missile attitudes, and the relationship between thrust misalignment and initial disturbance is established. The research results show that the distributions of related missile attitudes are approximate to normal distributions considering the influence of thrust misalignment.

Evaluation of Fuel and Take-off Mass for Tactical Scramjet Missile

WANG Hong-tao, SHI De-ping

2018, 46(1): 47-55. doi:10.3969/j.issn.1009-086x.2018.01.008

Asbtract ( 236 )

References | Related Articles | Metrics

Based on the traditional mass evaluation model, an iterative evaluation model to study the fuel mass and the take-off mass of tactical scramjet missile is devised, and an improved evaluation model is put forward by taking terminal guidance into account. By comparing these two kinds of evaluation models for fixed and moving targets, the source of evaluation error is achieved. The influence of range, target speed, distance of terminal guidance and cruise height on evaluation error is discussed. The simulation results show that the traditional mass evaluation model which ignores the terminal guidance is suitable for short range fixed targets and low speed targets, while the mass-evaluation model considering terminal guidance or modified model ignoring the terminal guidance are suitable for long range, high cruise height, long-distance terminal guidance and high speed targets.

Improved Kriging Model and Its Application in Variable Geometry Inlets with Large Mach Number

XU Shan-shan, JIN Yu-hua, ZHANG Qing-bing

2018, 46(1): 56-62. doi:10.3969/j.issn.1009-086x.2018.01.009

Asbtract ( 263 )

References | Related Articles | Metrics

For multi-dimensional and huge amount calculations, an approximate model with sufficient accuracy and fast calculation speed for the variable geometry supersonic inlet with large Mach number range is needed urgently. To solve the convergence at partial-best point of current quantum-particle swarm optimization Kriging approximate model, the global criterion improved quantum-behaved particle swarm optimization is presented, which is validated with high precision, fast speed and strong adaption to high non-linear function by rebuilding two test functions. The approximate model of variable geometry supersonic inlets with 2~4 Mach number range is established by 5 variable parameters: Ma, angle of attack, horizontal displacement of cowl, second inlet ramp angle and its displacement. The application of the presented model method is validated with high accuracy and adaptability.

IMU Inner Lever Arm Calibration Method Based on Kalman Filter

BAI Huan-xu, LIU Bing, CHEN Hong-yue, CHEN Yu

2018, 46(1): 63-68. doi:10.3969/j.issn.1009-086x.2018.01.010

Asbtract ( 275 )

References | Related Articles | Metrics

Under high dynamic circumstances, the size effect error caused by inner lever arm is an important error source of high accuracy strap-down inertial navigation system (SINS). The mechanism of size effect error is analyzed theoretically. The dynamic error model of inner lever arm is derived, and the calibration model is derived based on inner lever arm model and system error model. By using the velocity compensated with outer lever arm error as the observation, an inner lever arm calibration method based on Kalman filter is established. The experiment results show that the repeatability of inner lever arm parameter is better than 2 mm. In the rapid rotation test, the speed error is reduced by 90% with inner lever arm parameters compensation, and the navigation accuracy in the swing test is improvedsignificantly.

GPS/INS Combined Positioning Scheme and Its Experimental Data Analysis

WEI Peng-tao, WANG Yan

2018, 46(1): 69-73. doi:10.3969/j.issn.1009-086x.2018.01.011

Asbtract ( 212 )

References | Related Articles | Metrics

The rapid positioning of the missile’s mobile launch position is the key problem to improve its maneuverability. Based on the schemes of GPS real time dynamic measurement and inertia measurement as adopted by the missile's mobile launch positioning, the predominance and shortcoming are analyzed. A new combined positioning scheme is put forward and its feasibility is proved through experiment.

Penetration Route Planning of UAV Based on Improved Ant Colony Algorithm

OUYANG Zhi-hong, GUO Qiang

2018, 46(1): 74-78. doi:10.3969/j.issn.1009-086x.2018.01.012

Asbtract ( 230 )

References | Related Articles | Metrics

It is required to plan the best route for the military UAV when carrying out accompanying penetration assignment, and the restraints of threat and arm performance should be considered seriously. An improved ant colony algorithm is proposed. Firstly, the threat effect is imported to correct the calculation of transfer visibility factor. The transfer probability is influenced sequentially and the entire security of the route is improved. Then, the pheromone is increased around the target node in reason to reduce the searching space and obtain the optimum route faster. The simulation results show the feasibility of the route planning method finally. The optimum routes are generated by weight change in transfer visibility factor calculation and can satisfy the commander needs for different backgrounds and tasks.

Guidance Information Estimation of Full Strap-down Seeker with Improved Particle Filter

PANG Wei, XIE Xiao-fang, LIU Jia-qi, SUN Tao

2018, 46(1): 79-87. doi:10.3969/j.issn.1009-086x.2018.01.013

Asbtract ( 222 )

References | Related Articles | Metrics

As the strap-down infrared image seeker cannot get the line-of-sight (LOS) angular rate directly, the application of improved particle filter (IPF) in LOS angular rate estimation is studied. Based on the relationship of coordinate transformation, the angular velocity decoupling formula is derived; and according to the relative motion relationship between the bomb and the target, the state equation and observation equation are established. Due to the nonlinear characteristics of the system measurement noise non Gauss and the state equation and the observation equation, the LOS angular rate estimation method based on the improved particle filter is proposed. The semi physical simulation experiment of LOS angular rate estimation is established. The results show that the IPF method is better than the extended Kalman filter (EKF) and PF method. IPF method can provide some reference for the new development of gliding guided bomb.

Fast Inertial Navigation Error Estimation Method for Airborne SAR

WANG Guan-yong, WANG Feng-fei, ZHANG Lei, HU Qing-rong

2018, 46(1): 88-93. doi:10.3969/j.issn.1009-086x.2018.01.014

Asbtract ( 210 )

References | Related Articles | Metrics

To locate airborne synthetic aperture radar (SAR) image with high accuracy, a fast inertial navigation error estimation method is proposed by using advantage of sub image back projection (BP) imaging. The relationship between inertial navigation error in position, velocity and positioning error under BP imaging model is investigated. The observation equation of positioning error is obtained by approximating the relationship in linear. Estimations of inertial navigation error in position and velocity can be obtained by least square method. Monte Carlo tests are processed under Gauss observation errors with the same mean and variance. It is illustrated that the proposed method possesses a lesser error of mean square compared with the conventional range-Doppler (R-D) model based estimation method.

Compensation Method of Sensor Precision in Photoelectric Servo System

DING Hai-jin, HE Wen-tao

2018, 46(1): 94-99. doi:10.3969/j.issn.1009-086x.2018.01.015

Asbtract ( 238 )

References | Related Articles | Metrics

The enhancement of sensor precision is vital for improving the control performance of servo system. The measurement error of resolver is studied. The measurement error of internal angle tracking loop of resolver is analyzed and it is found that major part of error is even harmonics. The precision of the resolver is compensated with polynomial fitting, Fourier decomposition and table look-up method. The practical product test results show that the precision of resolver is sharply improved.

Relay Route Planning Method for Connectivity of Airborne Hierarchical Network

ZHANG Zhao-chen, QIAN Ning

2018, 46(1): 100-107. doi:10.3969/j.issn.1009-086x.2018.01.016

Asbtract ( 213 )

References | Related Articles | Metrics

For the problem of communication support for the mission of aircraft formation, the connectivity of the network is ensured by way of adding relay nodes according to the characteristics of airborne hierarchical network. A relay route planning method for connectivity of airborne hierarchical network is presented. Taking aircraft mission routes as input, the method optimizes the spanning tree by comparing whether the connected component of the vertex of the edge in minimum spanning tree (MST) is the same as the previous time. The relay segment vectors are connected with the degree of the vertex of the relay segment vectors and the motion time of the relay nodes between two relay segment vectors as the joint weight. Simulation demonstrates that the proposed method can achieve the reuse of relay nodes in time and space. Compared with the traditional algorithm, the method can effectively reduce the number of relay nodes, and achieve the optimization of relay node routes.

Evaluation Method for Operational Effectiveness of Warship Formation Communication

WANG Rui, JIANG Ning

2018, 46(1): 108-114. doi:10.3969/j.issn.1009-086x.2018.01.017

Asbtract ( 242 )

References | Related Articles | Metrics

Being the “key link” of warship formation system operation, the development degree of operational effectiveness affects directly completed degree of operational task. Aiming at problems of lacking adaptive theory for communication operational effectiveness, starting with operational task, taking timeliness and veracity of information transmission as the core, an evaluation index system based on operational task is built, and a communication operational evaluation method system is proposed by using the techniques of consensus ranking, weighting summation and catastrophe theory.

Evaluation of Deployment Plan of Field Air Defense Combat with Multi Attribute Decision Making

PAN Ze-dong, LIU Fu-xian

2018, 46(1): 115-119. doi:10.3969/j.issn.1009-086x.2018.01.018

Asbtract ( 245 )

References | Related Articles | Metrics

To adapt to the variability and uncertainty of the battlefield environment, starting from multiple factors of the battlefield situation, the air defense combat deployment scheme is evaluated and the optimal scheme is chosen from several alternatives. In view of the variability and uncertainty evaluation index, an evaluation method of multiple attribute decision making is presented. The factors that affect the operational deployment are primary and secondary divisions. To the problem of the weight of each parameter, the entropy method is used to calculate weight for sure. According to the scheme of the various parameters to calculate the ideal value and the negative ideal value, degree of each scheme are relatively close to the calculated, thus realizing quick selection of optimal deployment plan. An example is given to verify the effectiveness of the method.

Algorithm Improvement of D-S Evidence Theory in Submarine Target Recognition

LIU Biao, XU Teng, LI Guang

2018, 46(1): 120-124. doi:10.3969/j.issn.1009-086x.2018.01.019

Asbtract ( 4438 )

References | Related Articles | Metrics

D-S evidence theory is widely used in target recognition. It is an effective method of multi-sensor data fusion. However, it involves counter-intuitive behaviors when the high conflict information exists. In view of the problem, the reliability of sensor is introduced and the new algorithm is proposed. The algorithm makes up for the shortcomings of D-S evidence theory, and has better fusion effect than other improved algorithms. The algorithm is applied in submarine target recognition and the calculation result indicates that the algorithm is effective and correct.

Optical Design and Analysis of Infrared Thermal Imager for Maritime Surveillance

QIAN Kun, LIU Jia-guo, LI Jun-wei

2018, 46(1): 125-129. doi:10.3969/j.issn.1009-086x.2018.01.020

Asbtract ( 221 )

References | Related Articles | Metrics

For the needs of maritime surveillance, an optical system of refrigeration infrared thermal imager is designed, for which the detectability is not less than 23 km for an over 500t level sea surface ship (greater than 10 m×10 m). The infrared detector is determined. The parameters such as focal length, zoom ratio and aperture are determined by the distance analysis. The detailed design for the optical system is performed according to the above parameters using Zemax software optical design. The imaging quality and aberration is analyzed. The detectability is verified by field experiment, which proves the rationality of design.

Effectiveness Evaluation of Anti-Stealth Detection of Bistatic Guidance Radars

JI Jun-liang, ZHANG Xiao-kuan, WANG Min-le, WAN Peng-fei

2018, 46(1): 130-134. doi:10.3969/j.issn.1009-086x.2018.01.021

Asbtract ( 261 )

References | Related Articles | Metrics

To build an effective model for effectiveness evaluation is the premise to study the anti-stealth detection of bistatic guidance radars. The detection coverage coefficient and the guaranteed precision coefficient are defined. The detectable area and the guaranteed precision area are calculated by the mesh generation method. The simulation results show that the anti-stealth efficiency coefficient is higher when only considering detection or tracking and the efficiency evaluation data are reliable when considering both of them. The rationality and effectiveness of the model are validated.

Radar Main-Lobe Jamming Suppression Based on the Method of BSS-BM Union

ZHANG Jian-zhong, WEN Shu-liang, TAN Cheng, ZHOU Bao-liang

2018, 46(1): 135-140. doi:10.3969/j.issn.1009-086x.2018.01.022

Asbtract ( 240 )

References | Related Articles | Metrics

To counter main lobe jamming, an algorithm based on blind source separation (BSS) and blocking matrix (BM) joint processing is proposed. The arrival of main-lobe jamming angel is estimated; the BM is used to prevent main-lobe jamming receiving; the joint approximation diagonalization of eigen matrices (JADE) is used to separate sources. The experiment of simulation indicates that the new algorithm has greater peak SNR than BSS when the jamming locates in 1/2 beam width, and improves the radar detection performance largely. Even there exists a main-lobe interference direction estimation error, the new algorithm still has good anti-interference ability.

Adaptive Scheduling Algorithm for Passive Radar Tasks with Integrated Priority

BAO Peng-fei, HUANG Xiao-peng, ZHOU Xi-chen

2018, 46(1): 141-147. doi:10.3969/j.issn.1009-086x.2018.01.023

Asbtract ( 4429 )

References | Related Articles | Metrics

Considering comprehensively the five parameters affecting threat degree, the criteria and methods for assessing the threat degree of radiation source are given. A comprehensive priority algorithm (highest threat,highest priority and earliest deadline first, HTHPEDF) is proposed in the design of the task priority of the passive radar with the radiation source threat parameters which can be dynamically adjusted according to the degree of the threat of radiator. On this basis, the task adaptive scheduling implementation, the performance evaluation and the scheduling cost function are designed. The simulation results show that the algorithm obtains higher task scheduling performance with lower cost and has certain advantages for enhancing task scheduling ability.

Overview of Radar LSS Target Detection Technology

XU Dao-ming, ZHANG Hong-wei

2018, 46(1): 148-155. doi:10.3969/j.issn.1009-086x.2018.01.024

Asbtract ( 5019 )

References | Related Articles | Metrics

The major difficulties in early warning radar detection targets based on the analysis of the characteristics of low altitude slow and small target (LSS-target) are summed up, and several typical target detection technologies with great development potential are discussed based on TBD (track before detect) technology, transform domain analysis, micro-Doppler analysis, system detection,clutter whitening or other methods. The performance of each method is analyzed and some suggestions on the development of such target detection technology are put forward.

Track Initiation Method for Slow and Small Target Based on Image Processing Hough Transform

ZHU Yuan-cai, WANG Hong, QU Zhi-guo, DUAN Yi, LIU Guo-qing

2018, 46(1): 156-161. doi:10.3969/j.issn.1009-086x.2018.01.025

Asbtract ( 184 )

References | Related Articles | Metrics

Aiming at the problem that the traditional algorithm cannot initiate the slow and small target (SST) track effectively, a track initiation method for SST based on image processing Hough transform is proposed. The parameters of the minimum circumscribed rectangle, consisting of F₃, F₂ and F₁, are introduced as the weighting factors of Hough transform, and these parameters are extracted in accumulation region by image marking technique. SST is successfully obtained by controlling the weighting factor of Hough transform, which improves the detection performance of the radar to the SST. Simulation results verify the effectiveness of the proposed algorithm.

Repair Optimization Model for Equipment Based on Optimal Decision

ZENG Xiang, XU Ting-xue, DONG Qi, AN Jin

2018, 46(1): 162-170. doi:10.3969/j.issn.1009-086x.2018.01.026

Asbtract ( 203 )

References | Related Articles | Metrics

The economic and efficient level of repair is needed for the invalid parts in reality, which is often affected by many factors. Combined with the existing results, the decision-making flow chart is utilized for multi-level maintenance process of a certain equipment from the perspective of qualitative and quantitative. A multi-objective optimization model including economic and non-economic indicators is built. The optimal solution is determined by the combination of TOPSIS (technique for order preference by similarity to an ideal solution) and genetic algorithm which is illustrated effectively, and provides a reference for maintenance support of equipment.

Equipment Quality Condition Assessment Under Information Conflict and Uncertainty

AN Jin, XU Ting-xue, ZHU Gui-fang

2018, 46(1): 171-177. doi:10.3969/j.issn.1009-086x.2018.01.027

Asbtract ( 4427 )

References | Related Articles | Metrics

Aiming at the conflict and uncertainty of the test data required in the quality assessment, and the incompleteness and inaccuracy of the condition assessment, an improved method of evidential reasoning (ER) is proposed. After the quality grading and test data pretreatment, the conflict between the information and the overall uncertainty are assigned to each level of probability to reduce conflict and overall uncertainty between the evidence assessed. The method is applied to the missile equipment quality condition assessment, and the results and algorithm comparison show that the improved evidence reasoning method can effectively reduce the conflict of evidence, and the overall uncertainty of condition assessment is greatly reduced. The principle of the method is simple, the theoretical basis is sufficient, and the program is convenient to be realized.

Evaluation of Military Aircraft Operational Suitability Based on Game Theory Combination Weighting

LI Jie-qiao, NIE Cheng-long, QIU Hua-lei

2018, 46(1): 178-183. doi:10.3969/j.issn.1009-086x.2018.01.028

Asbtract ( 250 )

References | Related Articles | Metrics

For evaluating the operational suitability of military aircraft in using stage, six first-level parameters and thirteen secondary level parameters are selected. To avoid the defects of the main and objective empowerment law, the analytic hierarchy process and the coefficient of variation are used to determine the main and objective weights. The game theory is used to combine empowerment, improve the scientificity of the parameters weight, and provide ideas to evaluate the operational suitability of military aircraft.

De-Noising of HRG Vibration Signal Based on Improved Wavelet Threshold Function

TAN Ji-wen, WANG Li-xin, ZHOU Xiao-gang, LI Zhuo

2018, 46(1): 184-189. doi:10.3969/j.issn.1009-086x.2018.01.029

Asbtract ( 178 )

References | Related Articles | Metrics

To solve the influence of vibration on the hemispherical resonator gyro (HRG) navigation accuracy, the wavelet threshold de-noising algorithm is used to study HRG vibration signal. Aiming at the shortcomings of classical hard threshold function and soft threshold function, a threshold function with adjustable parameters is obtained, which makes up the deficiency of hard threshold function and soft threshold function in de-noising. The validity and superiority of the threshold function are proved by the simulation data and the verification of the measured vibration data of HRG.

Continuous Wave Radio Frequency-Screen Signal

DING Shuang, SHANG Chao-xuan, HAN Zhuang-zhi, XIE Hui

2018, 46(1): 190-194. doi:10.3969/j.issn.1009-086x.2018.01.030

Asbtract ( 198 )

References | Related Articles | Metrics

IFM (instantaneous frequency measurement) receiver has many advantages, such as high probability of interception, large instantaneous bandwidth and high resolution. It has been widely used in radar warning, radar reconnaissance and other electronic warfare equipment. Therefore, the interference to IFM receiver can effectively improve the survival probability of radar. Based on the analysis of IFM principle, the method of using continuous wave radio frequency-screen signal to interfere with frequency of IFM receiver is put forward, and the simulation of the method is realized on the SyetemVue platform. The jamming effects under different conditions of continuous wave signal on IFM receiver are verified.

Closed-Loop Simulation Model Design for Surveillance Radar Antijamming

YAO Yi, LI Zeng-hui, LI Jian-xun, HE Ping

2018, 46(1): 195-201. doi:10.3969/j.issn.1009-086x.2018.01.031

Asbtract ( 212 )

References | Related Articles | Metrics

Surveillance radar antijamming closed-loop simulation is of great significance for researches on radar system antijamming performance improvement and new kinds of jamming patterns. Total system signal grade simulation model, which can simulate jamming patterns like dense false target jamming, frequency spot jamming, sweep frequency jamming, and antijamming measures such as sidelobe blocking, sidelobe cancellation etc., is designed by analyzing the simulation process of radar jamming and antijamming signals, building physical models of radar system, typical jamming patterns and antijamming measures. The function of simulation model is proved effective by comparing with the results of real equipment tests.

Table of Content