Keystone变换实现方法研究  

Implementation Methods of Keystone Transform

作　　者：宁娜[1] 郝凤玉[1] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009

出　　处：《现代电子技术》2011年第24期133-136,共4页Modern Electronics Technique

摘　　要：在传统PD雷达中,当相干积累时间较长或信号带宽很大,目标运动速度很高时,回波会出现越距离单元走动,从而影响雷达探测目标的性能。Keystone变换是校正脉冲回波距离走动的常用方法。在此研究了Keystone变换的3种常用实现方法,通过仿真分析验证了算法的有效性,找出了低复杂度算法,对工程实现具有一定的参考意义。In conventional PD radar,when the coherent accumulation time is long,or when signal bandwideth is wide and the target velocity is high,the echo may occur the migration through resolution cell.In this case,the property of radar to detect targets may be affected.Keystone transform is the common method to correct the migration through resolution cell.Three habitually used methods to implement Keystone transform are studied.The algorithm＇s validity is confirmed by simulation analysis.The algorithm with low complexity was found.It has a certain conferece significance to the engineering implementation.

关 键 词：PD雷达 越距离单元走动 KEYSTONE变换 运算量 

分 类 号：TN95-34[电子电信—信号与信息处理]