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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。
In this paper, according to the basic definition of the averaged ambiguity function of random signal given by Cooper, the average ambiguity function of the random two-phase impulse radar signal is deduced in detail, and the three-dimensional average ambiguity function graph is drawn by computer. The conclusion shows that the distance ambiguity function of the random two-phase pulse radar signal is similar to the distance ambiguity function of random two-phase continuous-wave signal, that is, there is no ambiguity on the distance axis and the velocity ambiguity function is composed of random two-phase codes and periodic Coherent pulse train jointly decided that the speed axis was “comb” fuzzy map, the fuzzy flap depends on the periodic pulse train.