摘要
针对步进频率信号成像的多普勒敏感特性,提出一种基于峰值特征匹配的运动补偿新算法。从2帧距离像中分别提取所有可能的散射中心,构建其直方图不变描述,通过匹配确定目标真实散射中心,由对应匹配散射中心间的平移距离估计速度,然后进行运动补偿。仿真实验表明,新算法测速精度高,具有较好的抗噪声、抗干扰(杂波尖峰和虚假散射中心)性能。
A scatter feature matching based velocity compensation algorithm is proposed. By extracting all potential scatters of two range profiles, the algorithm constructs the histogram descriptions of the scatters and matches the scatters. The velocity is estimated by the distance of corresponding scatters. The simulation experiments on range profiles with varying SNR, false scatters, and clutter aiguilles demonstrate the robustness of the new algorithm.
出处
《无线电工程》
2012年第7期25-28,共4页
Radio Engineering
关键词
步进频
运动补偿
直方图特征
特征匹配
frequency stepped
velocity compensation
histogram feature
feature matching
