随机PRI雷达高速运动目标检测方法  

Random PRI Radar Detection Method for High-Speed Moving Targets

作　　者：虎昕岳 刘延峰[1] 宋思盛[1] 张一鸣 HU Xinyue;LIU Yanfeng;SONG Sisheng;ZHANG Yiming(Xi'an Electronic Engineering Research Institute,Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2025年第1期55-60,共6页Fire Control Radar Technology

摘　　要：随机PRI信号雷达可以解决高速运动目标测速模糊问题,但针对高速运动目标,由于速度、加速度带来的距离走动和距离弯曲会给后续相参积累带来问题,影响目标检测性能。Keystone变换可以校正雷达回波信号的距离单元走动问题,本文介绍了Keystone变换原理,分析了实现Keystone变换常用的三种方法,最后结合随机PRI信号非均匀相参处理方法验证了Keystone变换前后的性能。Random signal PRI radar can achieve unambiguous precise velocity measurement for high-speed targets.However,for targets moving at high speeds,the pulse accumulation duration,along with velocity and acceleration-induced range walk and range curvature,can cause problems for subsequent coherent accumulation,affecting target detection.Keystone transformation can correct the range walk issue in radar echo signals.In this paper,the principle of the algorithm was analyzed,three common methods were introduced for implementing the Keystone transformation,and their respective computational loads were studied.Finally,the feasibility of the algorithm was discussed in conjunction with simulation results.

关 键 词：随机PRI 距离单元走动 KEYSTONE变换 

分 类 号：TN95[电子电信—信号与信息处理]