一种相位编码信号脉内特征识别方法

A Method of Intra-pulse Recognition of Phase Coded Signal

雷达信号的脉内特征识别对雷达侦察有重要的意义。文章基于相位差分法,在仅知道单通道实中频数据的情况下,讨论了雷达信号脉内特征识别问题,并给出了一种有效的脉内特征分析方法。针对相位编码信号,采用统计相位分布情况的思想,给出了识别相位编码信号的方法,并提出了码元宽度及编码序列的提取方法。本文所提出的脉内特征分析方法运算量小,易于工程实现,在低信噪比下有较好的区分效果。仿真结果验证了所提出方法的有效性。

Radar signal intra- pulse analysis technique is important to radar reconnaissance. Based on the principle of phase difference,the problem of intra- jDulse recognition of radar signals is discussed in this paper, under the condition that only the real part of intermediate frequency data ii known, and an effective intra- pulse recognition algorithmii proposed. By using the ideal of the statisticsof phase distribu-tion , a method of recognizing a phase coded signal ii given , and at the same time , a method of how to obtain shift keying rule is also raised up. The proposed method is easy to implement and is the effectiveness of this method.