基于宽带Stretch处理的长时间积累方法  

A Long-Term Integration Method Based on Wideband Stretch Processing

作　　者：李阳[1] 刘鹤[1] 温靖[1] 

机构地区：[1]北京理工大学雷达技术研究所,北京100081

出　　处：《北京理工大学学报》2009年第2期156-159,共4页Transactions of Beijing Institute of Technology

摘　　要：针对超宽频带制导雷达长时间积累过程中运动目标跨距离分辨单元走动,引起微弱目标检测性能下降的问题,提出一种基于Stretch处理的相参积累方法.该方法利用目标速度装订信息进行速度粗补偿,使用Keystone变换完成距离走动校正,采用脉冲多普勒处理完成相参积累.计算机仿真验证了该方法的有效性.According to the problem of target range migration through resolution cells in a long-term integration, a long-term coherent integration method is proposed to maintain the detection sensitivity of the radar. It makes use of the cued velocity for a coarse velocity compensation, and then Keystone transform is adopted for the completion of the migration compensation. The coherent integration is finally carried out by Doppler processing. Computer simulation results showed the effectiveness of the proposed method.

关 键 词：长时间积累 STRETCH处理 KEYSTONE变换 跨距离分辨单元走动 

分 类 号：TN958[电子电信—信号与信息处理]