空中微弱目标长时间相参积累技术研究  

Research into The Accumulation Technology of Long-time Phase-coherent for Weak Targets in The Air

作　　者：王志刚[1] 洪畅 翟栋梁 刁志龙 WANG Zhi-gang;HONG Chang;ZHAI Dong-liang;DIAO Zhi-long(No.724 Research Institute of CSIC,Nanjing 211153,China)

机构地区：[1]中国船舶重工集团公司第七二四研究所

出　　处：《舰船电子对抗》2019年第5期6-10,64,共6页Shipboard Electronic Countermeasure

摘　　要：针对微弱运动目标长时间积累过程中出现跨距离和多普勒单元走动,导致能量弥散、检测性能下降的问题,首先建立了涵盖跨距离单元和多普勒通道走动的回波模型,然后基于Keystone变换消除回波的距离走动,最后基于高阶模糊函数法实现对多普勒通道的补偿和校正。实验结果表明,经过距离走动校正和多普勒通道补偿后,雷达检测性能显著提高。In order to solve the problems of energy dispersion and detection performance degradation caused by range-cross and Doppler cell migration in the long-time accumulation process of weak moving targets,this paper firstly establishes an echo model covering range-cross and Doppler cell migration,then eliminates the echo range migration based on Keystone transform,finally realizes the compensation and correction for Doppler channel based on the high order fuzzy function method.Experimental results show that the radar detection performance is significantly improved after range-cross correction and Doppler channel compensation.

关 键 词：距离校正 多普勒补偿 相参积累 

分 类 号：TN957.51[电子电信—信号与信息处理]