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当多站制连续波雷达与非相参应答机协同工作跟踪动目标时,各站收到的本站测距讯号中伴有较复杂的干扰。本文介绍一种扩频体制的测距讯号,它能使上述干扰造成的测距误差减到最小。为了衡量这种测距讯号的抗干扰能力,本文详细地分析了系统对不同干扰的处理增益。并给出了几种典型测距码的计算结果。在分析了建立位同步的方法后,提出了两种能较快地捕获这种测距讯号的方法,并用实例给出了捕获程序。
When multi-station CW radar and non-coherent transponder work together to track the moving target, each station receives a more complicated interference in its own ranging signal. This article describes a spread spectrum ranging signal system, which can make the above-mentioned interference caused by the minimum error. In order to measure the anti-jamming ability of this ranging signal, this paper analyzes in detail the system processing gain for different interferences. The calculation results of several typical ranging codes are given. After analyzing the method of setting up bit synchronization, two methods are proposed to capture this kind of ranging signal more quickly. An example is given to capture the program.