炮射雷达导引头信号模糊函数分析

Analysis of Signal Ambiguity Function of Artillery Radar Seeker

本文分析了炮射雷达导引头常用的四种信号——包含脉内线性调频步进频信号(ChirpSF)、单载频脉冲步进频信号(SglF-SF)、脉内线性调频脉冲多普勒信号(Chirp-PD)、单载频脉冲多普勒信号(SglF-PD)的模糊函数,并根据模糊图分析了四种信号特点以及距离、速度分辨率。仿真结果表明,模糊函数全面反映了雷达发射信号在距离和速度上的测量精度和分辨能力,在给定目标环境的条件下,模糊函数可以作为设计和选择合适雷达信号的重要方法。

The paper analyses ambiguity function of four kinds of common signals in artillery radar seeker, including intra-pulse chirp step frequency signal （Chirp-SF） , single carrier frequency step frequency signal （SglF-SF） , intra-pulse chirp pulse Doppler signal （Chirp-PD） , single carrier frequency pulse Doppler signal （SglF-PD） , and analyzes characteristics, range and velocity resolutions of the four kinds of signals based on the ambiguity diagram. Simulation results show that ambiguity function fully reflects measurement accuracy and resolution of the radar trans- mit signal in range and velocity. Under the conditions of given target environment, ambiguity function can be an important method in designing and selecting appropriate radar signal.