FTF算法可以自适应地跟踪接收机输入信号的幅度衰减，做出实时地估计。
The receiver with FTF adaptive filters can track the amplitude of received signal to form a real-time amplitude estimation.
利用在接收机输入端加入测试信号，基于统计平均的思想求出所需要的校正系数，然后实现正交解调误差的校正。
Correction coefficients can be received based on statistic average when importing a test signal. Then quadrature demodulation errors are realized.
为了更好的解释视频采集接口，我采用了一个没有接收机和没有音频输入的摄像头作例子。
In order to explain the video-capture interface I will use the example of a camera that has no tuners or audio input.
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