本文从多个方面对各种无源雷达的体制进行了比较，介绍了一些比较突出的研究成果和装备，提出了无源栅栏雷达的构想。

In this paper. we introduce some outstanding research achievements and equipments . and present a concept of a kind of new passive radar: passive fence radar.

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她是他透过栅栏见过的独一无二的善良的小精灵。

She was the only kind soul he'd seen across the fence.

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