The interference produced by the dithering of this detecting system is called self-dithering interference relative to human life-parameter such as respiration and heartbeat.
非接触生命参数检测系统由于抖动而产生的干扰，相对于人体的生命参数信号(如呼吸、心跳)而言被称作检测系统的自抖动干扰。
So it is necessary to find a way to constrain the self-dithering interference of the non-contact life-detection system and raise SNR so as to extract the life-parameter signal of human subject.
因此，必须设法抑制由于外界作用而使非接触生命参数检测系统产生的自抖动干扰，提高信噪比，检测出人体的生命参数信号。
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