随机二相码脉冲雷达信号的平均模糊函数

Average Ambiguity Function for a Random Binary Phase Coded Pulse Signal

本文根据Cooper给出的随机信号平均模糊函数的基本定义，详细推导了随机二相码脉冲雷达信号的平均模糊函数，并利用计算机绘制出三维平均模糊函数图．结论表明，随机二相码脉冲雷达信号的距离模糊函数与随机二相码连续波信号的距离模糊函数类似，即在距离轴上无模糊，而其速度模糊函数则由随机二相码和周期的相参脉冲串共同决定，即在速度轴上呈“梳状”模糊图，其模糊瓣取决于周期脉冲串。

This paper first derives the average ambiguity function (AAf) of the random binary phase coded pulse signal (RBPCPS) in detail from Cooper's definition about average ambiguity function and then draws the graph of the AAF of the RBPCPS by using a computer. The conclusion shows tha there is no vagueness on the distance axis and it is in 'comb' form on the velocity axis, whose vagueness on the velocity axis is decided by the periodic pulse signal.