相位差对雷达分辨的影响  

Influence of Relative Phase on Radar Resolutions

作　　者：徐振海[1] 王罗胜斌 熊子源[1] 

机构地区：[1]国防科技大学电子信息系统复杂电磁环境效应国家重点实验室,湖南长沙410073

出　　处：《电气电子教学学报》2015年第4期1-2,53,共3页Journal of Electrical and Electronic Education

摘　　要：雷达目标分辨是"雷达原理"课程中的重要概念,本文详细分析了相位差对目标分辨的影响,推导得出分辨率与相位差的近似公式。研究表明:雷达分辨率与相位差绝对值具有严格的单调关系,两目标相位相同时分辨率最大,相位相反时分辨最容易,相位未知的情况下,平均分辨率大约为0.8倍模糊函数3d B宽度。上述结论适用于时域、多普勒域和角度域。Radar resolution is an important conception in the course of Radar Principles. The influence of relative phase on radar resolutions has been investigated theoretically. The resolution formula is derived with respect to the relative phase. It can be seen that the radar resolution monotonously decreases with the relative phase increasing.Especially,the resolution reaches the maximum when the two targets are in phase. Otherwise,the resolution reaches the minimum. As for the random relative phase,the mean resolution is 0. 8 time the 3d B width of ambiguity function. This conclusion fits in time,Doppler and angle domains.

关 键 词：相位差 雷达分辨 模糊函数 

分 类 号：TN951[电子电信—信号与信息处理] G642.3[电子电信—信息与通信工程]