低重频脉冲雷达径向速度事后提取方法研究

Research on Post-Processing Methods for Radial Velocity Extraction in Low-PRF Pulse Radars

摘要:

为解决连续波雷达作用距离不足及低重频脉冲雷达速度模糊问题，对径向速度事后提取方法进行研究；采用距离中心平滑、B样条拟合和FFT滤波器号曲线比对的关键技术，构建了不依赖多重PRF的稳健解模糊流程；经外场试验验证，该方法成功提取多种弹药全程飞行径向速度，解模糊成功率超过98%，测速误差小于0.2 m/s；该方法显著提升了脉冲雷达在远程目标跟踪中的径向速度测量能力，满足了远程武器全程试验的测试需求。

Abstract:

To address the limitations of continuous-wave radar in detection range and the velocity ambiguity in low-PRF pulse radar, a post-processing method for radial velocity extraction is studied; The key techniques of range center smoothing, B-spline fitting, and FFT filter number curve comparison are adopted to construct a robust de-ambiguity process without relying on multiple PRFs; Field tests show that this method successfully extracts the full-course radial velocity of various projectiles with a de-ambiguity success rate exceeding 98% and a velocity measurement error less than 0.2 m/s; The method significantly enhances the radial velocity measurement capability of pulse radar in long-range target tracking and meets the testing requirements for full-range trials of long-range weapons.