运动目标循环移位舍弃像拼接算法

雷达目标一维高分辨距离像拼接是一维高分辨距离像用于雷达目标识别的前提。当目标运动时，距离像发生循环移位，采用传统的目标抽取算法如同距离舍弃法和同距离选大法将导致目标抽取结果产生像缺损。分析了目标运动对步进频率一维高分辨距离像的影响，提出了可避免抽取损失的循环移位舍弃像拼接算法。该算法基于幅度最强像修正抽取范围，将抽取范围与距离像同步移动，克服了目标运动对传统的距离像拼接算法的影响，同时避免了精确运动补偿计算量大的问题，具有工程应用价值。仿真实验验证了该算法的有效性。

Cyclic shift discard profile splicing algorithm for moving targets

Radar target high range resolution profile splicing is a premise for the application of one-dimensional high range resolution profile in radar target recognition. The velocity of moving target will produce cyclic shift of the range profile,which may cause losing target on range profile with traditional redundancy removement algorithms like discard method or method of selecting the large with same distance. The influence of target motion on high range resolution profile of stepped frequency radar is analyzed,while cyclic shift discard profile splicing algorithm which avoids extracting loss is proposed. The algorithm makes selected range move with range profile by modifying the pick-up scope based on the offset of the most powerful scatterer,which overcomes the effects of target motion on traditional range profile splicing algorithm while avoiding large computation of accurate motion compensation,thus showing engineering application value. Computer simulation validates the correctness of theoretical analysis.