利用双正交小波基将齿轮的故障振动信号分解到时频域，并提取出齿轮的故障特征。

This paper mainly introduces that the fault vibrating signal of gears was decomposed into time-frequency domains by double-orthogonal wavelet analysis and the fault feature of gears was picked up.

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为满足高性能信号处理技术要求，需要直接对中频信号进行采样来得到正交双路信号。

To satisfy the requirement of high performance signal processing technique, it is demanded to use the direct sampling of IF signal to get quadrature signals.

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该产生器由DDWS技术双路基带信号产生器和正交调制器组成。

It is built up with a dual-channel based signal generator on DDWS and a quadrature modulator.

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