摘要
雷达旁瓣对消系统的具体结构是由该系统所采用的性能量度准则及其所对应算法决定的,雷达旁瓣对消技术是提高雷达电子战能力的关键技术之一,为了提高雷达旁瓣对消中算法的收敛速度和稳态性能,针对目前变步长自适应滤波算法中存在的收敛速度慢、稳定性差的问题,提出了一种基于变步长改进型S函数的LMS算法,仿真表明:采用该算法的旁瓣对消系统可快速有效地抑制干扰,有效提高旁瓣对消系统的实时性和稳态性能;并根据实际应用环境的需要进行了实验验证,实验数据表明:当存在接收机内部噪声和两点相干干扰源时,采用双相干干扰对消系统好于单个相干干扰对消系统。
The Structure of Radar Side - Lobe Cancellation （SLC） System is determined by its capability measurement rule and the corresponding algorithm, SLC is one of the key techniques in the enhancement of radar electronic war capability. To improve the convergence speed and stable state capability of the algorithm in radar SLC, an im- proved un - constant - step LMS algorithm based on S - function is put forward aimed at the general problems （ low convergence speed and poor stability） existing in the un - constant - step LMS algorithm. The simulation results show that this system can fast restrain the jamming, effectively improve the system Real - time and stable state capability. And the experimental verification is done based on the requirements of the real application circumstances, the result shows that： when two coherent jamming source and the inner noise of receiver are in existence, the application effect of double CSLC is better than that of single CSLC.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2008年第4期25-28,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家"863"计划资助项目(2006AA×××307)
