经过限幅保护，接收放大，检波和带通滤波后，将多普勒频移信号提取出来。

Then after amplitude limiting, to be preamplified, demodulated, bandpass filtered, the doppler frequency shift signal is extracted.

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本文提出限幅滤波和中值滤波、均值滤波相结合使用的方法，并提出如何确定数字滤波器采样信号的采样间隔。

This paper presents the using methods of combing limit range filter with middle value filter and average value filter and how to determine the sampling interval of the digital filters.

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由偏差和测量时间有限而引起的总误差与量化输入信号限幅电平有关。

The total error due to finite observation and bias is dependent on the limited level of the quantized input signal.

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