卫星导航STAP算法的低仰角性能研究  

Research on Low Elevation of STAP Algorithm

作　　者：赵军[1] 于雪岗[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2014年第1期46-48,61,共4页Radio Engineering

基　　金：国家高技术发展计划("863"计划)资助项目(2012AA121801)

摘　　要：针对在卫星导航空时二维抗干扰(STAP)中SMI算法和LMS算法低仰角处零陷较多、负增益较大且影响卫星信号接收的问题,在空域波束形成的功率倒置迭代算法上,变形出一种适合卫星导航STAP的功率倒置迭代算法,并对SMI算法、LMS算法和功率倒置迭代算法进行了仿真分析。仿真结果表明,功率倒置迭代算法在低仰角处没有多余零陷、低仰角增益低且增益稳定,适合低仰角要求较高的应用。In the satellite navigation of the space-time anti-jamming （STAP） , the SMI algorithm and LMS algorithm have more nulls,large negative gain and impact upon satellite signal reception at low elevation. Aming at these problems,the power inversion itera- tion algorithm suitable for STAP is generated based on power inversion iteration algorithm in the spatial beam. The simulation analyses are done for SMI algorithm,LMS algorithm and power inversion iteration algorithm,and the results show that the algorithm has no null, low gain and high stability in low elevation, and is suitable for the applications of low elevation with higher requirements.

关 键 词：STAP 低仰角 功率倒置 迭代 抗干扰 

分 类 号：TN911[电子电信—通信与信息系统]