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.
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.
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.
主要的研究内容和成果包括以下几个方面：1利用定义双正交原理提出提出了多种用于阵列信号盲分离双二次代价函数。
The main contents and contributions include: 1 on basis of the defined biorthogonality, we propose several biquadratic cost functions for array-signal blind separation.
该采集器尤为适用于双通路锁相放大器的正交矢量运算或双光路测量信号的处理。
This system is used as the data processor of measurement instruments to provide the instantaneous computed function.
本文介绍正交多小波、双正交多小波、半正交多小波的构造方法，以及多小波在信号处理方面的应用。
The main purpose of this paper is to introduce the construction of orthogonal, biorthogonal and semi orthogonal multiwavelet and the application of multiwavelet to signal processing.
本文介绍正交多小波、双正交多小波、半正交多小波的构造方法，以及多小波在信号处理方面的应用。
The main purpose of this paper is to introduce the construction of orthogonal, biorthogonal and semi orthogonal multiwavelet and the application of multiwavelet to signal processing.
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