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关于抑制移动源(雨、箔条)的杂波问题,在军用脉冲压缩雷达(以及单脉冲或民用雷达)中是用自适应技术(特别是用移动凹口对消器)来解决的。本文叙述和评价了用于对消可移动和距离延伸杂波的开环自适应动目标显示。其简单结构完全能用数字实现;性能比仅利用相位信息的其他系统也优越得多;对于不同杂波频谱和杂波/噪声比作了测定。正如许多军用搜索雷达所采取的工作方式那样,当带或不带硬限幅的脉冲压缩器接至自适应动目标显示器时,就要特别注意这样工作方式。
The issue of clutter suppression of moving sources (rain, chaff) is solved with adaptive techniques (especially with moving notch cancellers) in military pulse compression radars (as well as single pulses or civil radars). This paper describes and evaluates the open-loop adaptive moving target display used to cancel moveable and distance extended clutter. Its simple structure can be realized digitally; its performance is much better than other systems using only phase information; and the measurement of different clutter spectrum and clutter / noise ratio is made. As is the case with many military search radars, special attention should be paid to this way of operation when a pulse compressor with or without a hard limiter is connected to an adaptive moving target display.