摘要
针对相位编码脉冲压缩雷达,利用多部雷达发射信号调相码间较好的正交性,结合自适应干扰对消原理,提出了一种基于自适应对消的单通道相位编码同频异步干扰抑制算法,在单通道情况下较好地抑制了同频异步干扰。并提出了同频异步干扰对消的结构,从统计特性与维纳霍夫方程两方面对算法进行性能分析。仿真表明,该算法在干信比38dB时脉压处理后主副比可达到20dB。
A single-channel algorithm based on adaptive cancellation to suppress the phase-coded co-frequency asynchronous interference is presented. For phase-coded radar, this algorithm uses the orthogonality of phase-modulation code of signals and the adaptive interference cancellation to restrain the co-frequency asynchronous interference preferably. The structure of co-frequency asynchronous interference cancellation is given, and that the performance of the algorithm is analyzed both in the sta- tistical characteristics and in Wiener-Hoff equation. Simulation results show that the main-side lobe ratio still reaches 20dB behind the pluse compression when the JSR is up to 38dB.
出处
《电子信息对抗技术》
2011年第2期51-55,69,共6页
Electronic Information Warfare Technology
关键词
自适应对消
同频异步干扰
单通道
相位编码
adaptive cancellation
co-frequency asynchronous interference
single-channel
phase-coded
