高速运动目标的越距离走动补偿  

Range Walk Compensation for High-Speed Targets

作　　者：张一鸣 李照照[1] 井伟[1] ZHANG Yiming;LI Zhaozhao;JING Wei(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》2023年第4期76-80,共5页Fire Control Radar Technology

摘　　要：对于搜索转跟踪的雷达系统来说,跟踪模式下往往采用较大的带宽,并且如果目标运动速度过快,此时雷达回波会出现距离走动,从而影响到雷达的检测性能。Keystone变换是校正距离走动的常用方法,但须考虑速度模糊的情况。本文在雷达搜索模式下通过多重频法预先得到多普勒模糊度,并对跟踪模式下的回波信号进行处理来校正距离走动。仿真分析和实测数据处理结果表明了实现方法的有效性。For search-to-track radar systems,a larger bandwidth is often used in tracking mode,and if the target moves too fast,range walk will appear in the radar echoes,thus affecting the radar detection performance.Keystone transform is a common method to correct range walk,but speed ambiguity must be considered.In this paper,the Doppler ambiguity is obtained in advance through the staggered PRF method in radar search mode,followed by processing of the echo signals received in tracking mode to correct range walk.The simulation analysis and measured data processing results show the effectiveness of the proposed method.

关 键 词：距离走动 KEYSTONE变换 多普勒模糊 参差重频法 

分 类 号：TN95[电子电信—信号与信息处理]