基于DOA参数的雷达信号预分选  

Radar signal preselection based on DOA parameters

作　　者：周洪娟[1] 刘帅[1] 金铭[1] 乔晓林[1] 

机构地区：[1]哈尔滨工业大学(威海)信息工程研究所,山东威海264209

出　　处：《系统工程与电子技术》2009年第11期2575-2577,共3页Systems Engineering and Electronics

摘　　要：主要讨论了利用雷达信号的波达方向(direction of arrival,DOA)参数对多部雷达的脉冲信号进行分组预分选的问题。为提高分类可靠性,提出了一种新的相似系数的计算方法,首次利用相似矩阵进行特征值分解的方法对大量脉冲的DOA参数进行聚类数目判断。经初步统计,当类内离散度与类间离散度差值在0.34以上时,最终的判别结论可信度接近并可能大于80%。在此基础上提出了以类别数目作为停止条件的层次聚类法,该算法简单易用,经过多组数据的试验,取得了较好的聚类效果。Radar signals are preselected by the clustering of incident pulses using their DOA （direction of arrival） parameters. In order to improve the clustering reliability, a novel method of calculating the similarity coefficients of DOAs is proposed, then the clustering number of the incident pulses is judged by the method of decomposing the eigenvalne of the similarity matrix which is built with the similarity coefficients, it is proved to be reliable that when the difference of scattering degrees is larger than 0.34, the mission success rate of the judged clustering numbers approaches 80% or larger. Finally, a hierarchical clustering method based on the clustering numbers judged above is analyzed. After being tested with multiple data, this method is verified to be simple and successful.

关 键 词：雷达信号预分选 波达方向 聚类数目 层次聚类法 

分 类 号：TN957.52[电子电信—信号与信息处理]