包络对齐快速实用算法  

Valid and Fast Algorithm for Range Alignment

作　　者：汤广富[1] 朱珍珍[1] 郑璞[1] 赵宏钟[1] 付强[1] 

机构地区：[1]国防科技大学ATR实验室,长沙410073

出　　处：《数据采集与处理》2010年第1期93-97,共5页Journal of Data Acquisition and Processing

基　　金：武器装备预研重点基金资助项目

摘　　要：在传统方法的基础上,提出一种包络对齐快速实用算法。算法选取具有最大相关值的峰值包络作为参考信号进行包络对齐偏移量的求解。在最大相关峰值包络的选取过程中,将非相参积累后的信号通过低通滤波器,以滤除其高频分量的"毛刺",在不改变原信号基本形状的前提下,减少峰值个数,从而降低了最大相关峰值包络寻找过程的计算量。最后用实测数据对算法进行了测试和评估,本文的算法不仅降低了计算量,满足了工程上的应用,而且比传统算法具有更好的对齐效果。To meet the demands of a rapid algorithm for the envelope alignment in engineering application, this paper proposes a valid and fast algorithm. The algorithm selects a peak envelope with the maximum correlation as a reference signal to calculate the offset. In the selection process of the maximum correlation peak envelope, the non-coherent accumulated wave is passed by a low-pass filter to filter the high frequency components, so that the detection of peaks becomes easy and rapid. Finally, the algorithm is tested and evaluated by real data. The result shows that the algorithm can reduce the calculation to meet engineering applications, and has a better alignment effect compared with the traditional method.

关 键 词：包络对齐 快速算法 积累相关 峰值包络 

分 类 号：TN958[电子电信—信号与信息处理]