模糊函数是用来研究雷达信号好坏的一个重要的函数,根据模糊函数的概念和性质,结合雷达实际信号的模糊图, 分析了LFMCW雷达信号距离-速度耦合现象,建立相应的LFMCW 雷达的数学模型,研究了其测距和测速原理,对造成信 号速度-耦合现象的本质进行了分析,通过仿真完成了多种不同速度情况下雷达信号回波。

Ambiguity function is an important function to study the quality of the radar signal. According to the fuzzy concept and nature of the function,combined with a fuzzy view of the actual radar signal,it analysises the distance and speed coupling phenomenonl of FMCW radar signal, then establishes mathematical model of LFMCW radar. The principle of its ranging and velocity is studied, and the nature of the signal speed coupling phenomenon is analyzed. At last,the simulation shows radar signal echo in a variety cases of different speed.