The improved algorithm can track frequency variation of the time-varyingsignal with no extra calculation burden.
对算法进行了改进，在不增加计算量的情况下，实现了对频率变化的跟踪。
2
In the testing of a certain antiaircraft artillery servo system, the signals needed to be measured are time-invariant signal and time-varyingsignal.
在某型高炮随动系统的测试中，待测信号有非时变信号和时变信号两种。
3
As a new technique of signal processing, wavelet analysis has excellent characteristics of time frequency localization and is suitable for analyzing time varying or transient signals.