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本文旨在综合与评价信号模糊度函数能满足跟踪雷达工作所需的雷达波形。为实现脈冲压缩跟踪雷达的特殊功能,需要使压缩波形中邻近主瓣的距离旁瓣很低(约为-40分贝)。这样的性能即使在有多卜勒频移效应及波形编码中可能存在某些误差时也应保持。为解决此问题,采用了直接综合法,编码为离散相位型。采用这种综合法,可以获得许多不同的包括一定数量子脈冲的编码。因此,可实现收发“编码捷变”,从而达到改善电子抗干扰能力,通过扫描接扫描的积累并能减小所有距离旁瓣。将所得的波形特性与先前脈冲压缩系统的波形特性进行了比较,并考虑了外部(多卜勒频移)和内部的各种误差源,结果得出,针对跟踪雷达的典型应用,本文所提出的方法比以前的方法优越,尤其是对数字脈压系统更是如此。
The purpose of this paper is to synthesize and evaluate the signal ambiguity function to meet the radar waveform required by the tracking radar. In order to realize the special function of the pulse compression tracking radar, it is necessary to make the side lobe of the compressed waveform near the main lobe very low (about -40 dB). This performance should be maintained even in the presence of Doppler shift effects and some possible errors in waveform coding. In order to solve this problem, a direct synthesis method has been adopted, which is coded as discrete phase type. With this synthesis, many different codes, including a certain number of subpulses, are available. Therefore, it is possible to send and receive “code-agile” so as to improve the electronic anti-jamming capability, accumulate by scanning the next scan and reduce all distance sidelobes. Comparing the obtained waveform characteristics with those of the previous pulse compression system and taking into account the external (Doppler shift) and various internal error sources, we conclude that for typical applications of tracking radar, The proposed method is superior to previous methods, especially for digital pulse pressure systems.