弹载雷达抗杂波高重频频率步进波形设计

Waveform Design for Anticlutter High Pulse Repetition Frequency Stepping Missile-borne Radar

摘要:

针对超低空突防对弹载雷达探测性能的影响,提出了一种小步进的高重频频率步进波形。利用频率步进波形在距离与速度维度的耦合特性,设计合理的波形参数,实现高速运动目标与主瓣杂波的分离,从而提高高分辨距离像的信杂比。该波形参数对接收机带宽、信号处理能力的要求不高,具有简单易行的优点。仿真结果验证了所提方法的有效性。

Abstract:

Aiming at the influence of ultralow altitude penetration on detection performance of missileborne radar, a frequency stepping waveform with small step and high repetition frequency is proposed. Using the coupling characteristics of frequency stepping waveform in distance and velocity, reasonable waveform parameters are designed. The high speed moving target can be separated from the main lobe clutter, thus the signaltoclutter ratio of high resolution range profile is improved. The waveform parameters have low requirements on receiver bandwidth and signal processing capability, and it is simple and easy to operate. Simulation and experimental results verify the effectiveness of the method.