穿墙生命探测雷达接收技术研究

摘要

The key techniques of the through-the-Wall Surveillance radar receiver is introduced in detail. The relationship between the transmit waveform and the echo waveform for the frequency modulated con- tinuous wave （FMCW） radar is discussed, including the principle of beat mixing. The solution of the sensitiviry frequency control （SFC） for eliminateing signal leakage and short range wall clutter is proposed, which is also analyzed, designed and implemented. A kind of receiver scheme and realization for the FMCW radar is produced, technique spcifications are presented at last.%详细介绍了一种穿墙生命探测雷达接收机所涉及的关键技术，阐述了调频连续波体制雷达发射波形与接收波形的关系以及差拍混频的原理，提出了采用灵敏度频率控制（SFC）技术来抑制主波泄漏信号和近距离墙杂波的解决途径，并对这一关键技术着重进行展开分析，给出了设计思路和实现方式，为此类调频连续波体制雷达提供了一种接收机设计框图和实现方法；最后给出了该雷达接收机实现的一些技术指标。