步进频率雷达多通道迭代收敛法速度估计方法研究  

Research on Multi-Channel and Iteration Method for Velocity Estimation in Stepped-Frequency Radar

作　　者：曹宇飞[1] 屈晓光[1] 黄培康[1] 

机构地区：[1]中国航天科工集团第二研究院23所,北京100854

出　　处：《宇航学报》2010年第4期1131-1135,共5页Journal of Astronautics

摘　　要：步进频率雷达中,目标的径向运动将导致合成的目标径向一维距离像产生距离徙动和波形失真,需要对目标速度进行估计以补偿其影响。首先基于相位对消原理提出一种适用于扩展目标的步进频率雷达信号处理方法。然后针对高速运动目标,提出基于多通道迭代法步进频率速度估计方法。该方法利用一组正跳频和负跳频步进频率脉冲串综合处理,通过多通道方法解速度模糊,迭代收敛法精确估计目标速度,从而实现高速运动目标无模糊速度精确测量。该方法可应用于步进频率雷达高速目标速度精确测量和成像补偿。In stepped frequency radar,the velocity of targets must be estimated and compensated to eliminate the range migration and distortion due to target moving.A phase cancellation method is presented for extended targets processing in stepped frequency radar.Moreover,the multi-channel and iteration method for velocity estimation of high-speed target is proposed.By means of synthetic processing of an up-hop stepped frequency pulse train and a down-hop one,the multi-channel method can be used to resolve target＇s velocity ambiguity and the iteration method can be used to estimate target＇s velocity precisely.Therefore,the multi-channel and iteration method can be used for velocity estimation and compensation in stepped frequency radar.

关 键 词：步进频率 相位对消 多通道 迭代收敛法 速度估计 

分 类 号：TN958[电子电信—信号与信息处理]