Abstract

This is the third paper of a series of articles devoted to modern methods of protection of coherent pulse radars against the combined interference (an additive mixture of internal noise, masking noise jamming and clutter). For a programmed surveillance radar, a prototype of the digital adaptive system for sequential space-time processing (STSP) of signals against the background of masking combined interference is described. This system is based on the 15-input 13-stage parallel adaptive lattice filter (ALF) and 5-stage sequential ALF that are built on a field programmable gate array (FPGA) and digital signal processor (DSP). Results of the prototype testing of adaptive STSP system using an additive mixture of simulated active noise jamming from five sources and digital recordings of real clutter in an operating radar are presented. These results have confirmed the high adaptation efficiency of the system based on adaptive lattice filters to the masking combined interference.

中文翻译：

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保护相干脉冲雷达免受组合干扰。3. 基于ALF的程控雷达组合干扰序列保护数字自适应系统

摘要

这是一系列文章中的第三篇，该系列文章致力于保护相干脉冲雷达免受组合干扰（内部噪声、掩蔽噪声干扰和杂波的加性混合）的现代保护方法。对于编程的监视雷达，描述了在掩蔽组合干扰的背景下对信号进行顺序时空处理（STSP）的数字自适应系统原型。该系统基于基于现场可编程门阵列 (FPGA) 和数字信号处理器 (DSP) 的 15 输入 13 级并行自适应点阵滤波器 (ALF) 和 5 级顺序 ALF。展示了自适应 STSP 系统的原型测试结果，该系统使用来自五个源的模拟有源噪声干扰和工作雷达中真实杂波的数字记录的加性混合。