CAJ | 학술논문

GPS抗干扰性能的分析有助于研究GPS干扰方法和手段。基于目前空域滤波的GPS抗干扰技术，采用LCMV算法对圆形天线阵的GPS抗干扰性能进行分析仿真，并提出了对其进行干扰的方法。在Matlab中对单个干扰源和多个干扰源在不同情况下的干扰效果进行仿真，仿真结果表明， LCMV算法能有效判定信号来波方位，并对干扰信号具有一定的赋零深度；针对分析结果提出多方位逼近干扰方法，能大幅降低LCMV获取的抗干扰增益。该方法对实战中采用空域滤波抗干扰技术的GPS干扰能提供一定的参考。
GPS항간우성능적분석유조우연구GPS간우방법화수단。기우목전공역려파적GPS항간우기술，채용LCMV산법대원형천선진적GPS항간우성능진행분석방진，병제출료대기진행간우적방법。재Matlab중대단개간우원화다개간우원재불동정황하적간우효과진행방진，방진결과표명， LCMV산법능유효판정신호래파방위，병대간우신호구유일정적부령심도；침대분석결과제출다방위핍근간우방법，능대폭강저LCMV획취적항간우증익。해방법대실전중채용공역려파항간우기술적GPS간우능제공일정적삼고。
Analysis on anti-interference performance could contribute to the research of GPS interference method. Based on GPS anti-interference technique of spatial filtering, LCMV algorithm is used to analyze and simulate the GPS anti-interference performance of circular antenna array, while interference method is proposed. Simulation of interference effect with single source and multiple sources in different situations are carried out with Matlab and the simulation result shows that LCMV algorithm could be used to recognize the direction and range of signal, and to provide a certain effect of assigning null of interference signal. In ac-cordance with the analysis, multiple direction approaching interference method is discussed, this method could reduce the gains of anti-interference with LCMV, and thus is helpful for GPS anti-interference tech-nique of spatial filtering in actual combat condictions.