低空逃逸小RCS目标PD雷达探测技术C

雷达面临的挑战之一是来自于对低空逃逸微弱目标的探测。现代军事逐渐向低空领域扩展，超低空逃逸技术也在日益发展，促使对低空逃逸微弱目标检测技术研究的地位日益提升。雷达对低空微弱目标进行下视探测时，目标的低空和超低空飞行致使雷达接收的回波功率变弱，被淹没在强烈的背景杂波中。与传统脉冲多普勒PD（Pulse-Doppler）雷达不同，合成宽带脉冲多普勒雷达可以同时实现距离和速度的二维高分辨，并且具备良好的相参性和抗干扰性能。针对低空飞行目标的特点进行定性定量分析，对探测所遇到的杂波环境进行仿真验证，提供了一种基于合成宽带脉冲多普勒雷达低空逃逸小雷达截面积RCS目标的探测方法，并对参数设计进行优化分析，降低漏探概率。

PD radar detection technology of low-altitude escape small RCS targets

One of the major challenges that radar faces comes from the detection of low-altitude escaping weak targets. Modern military is gradually expanding to the low-altitude field, and ultra-low-altitude escape technology is also increasingly developed, resulting in the research on low-altitude escape and weak target detection technology. When the radar performs downward-looking detection on this low-altitude weak target, due to the relatively low flying height of the target, the corresponding scattering coefficient of the target is large, so that the echo of the target is easily submerged in the sidelobe clutter. Different from traditional pulse-Doppler (PD) radar, synthetic broadband pulse-Doppler radar can achieve two-dimensional high resolution of distance and velocity at the same time, and has good coherence and anti-jamming performance. In this paper, a qualitative and quantitative analysis of the characteristics of low-altitude flying targets is carried out, and the clutter environment encountered by the detection is simulated and verified, and a detection method of low-altitude escape small radar cross-section (RCS) targets based on synthetic broadband pulsed Doppler radar is provided, so as to optimize the parameter design to reduce the probability of missed detection.