基于Keystone变换的高速目标检测方法  

Detection of Fast Moving Targets Based on Keystone Transform

作　　者：黄柏圣[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2013年第12期47-49,55,共4页Modern Radar

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,回波会出现距离单元走动,从而影响雷达探测目标的性能。文中提出了一种基于keystone变换的高速目标检测方法,通过多普勒频率参数估计,提取目标的速度及加速度信息,补偿多普勒模糊频率,使得在没有目标运动速度信息条件下校正距离走动,从而使积累时间不再受目标运动的限制,通过仿真分析验证了算法的有效性,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 very highly,the echo may occur the migration through resolution cell. In this case,the radar detection performance may be affected. Detection of fast moving targets based on keystone transform is proposed, which can correct range migration without the exact value of target velocity, and as a result, make the accumulation time free of the restriction due to target motion. The algorithm ＇s validity is confirmed by simulation analysis. It has a certain conference significance to the engineering implementation.

关 键 词：KEYSTONE变换 高速目标检测 相干积累 距离走动 

分 类 号：TN957.51[电子电信—信号与信息处理]