adaptive filter based on fft fft频域阈值法
It contains four main modules: signal producing and simulating, FFT, digital filter and basic mathematical operation.
可分为四个主模块：信号来源模块、滤波处理模块、FFT模块和序列基础运算模块。
The FFT is a match filter for sinusoid signal, and the band width of the match filter will decrease with increase in integrated time .
FFT对于正弦信号而言是匹配滤波器，随着积累时间的增加匹配滤波器的带宽会随之减少。
Finaly tested thrust data processing, data smooth, FFT frequency analysis and compensated filter were accomplished.
最后对实测推力数据进行分析处理，即数据平滑、FFT频域分析和补偿滤波。
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