时变滤波 meaning in English

time varint filtering
time-variable filtering

It can separate the real signal from noise signal effectively and attains the purpose of de - noise by using time - frequency localizing anslysis , local feature abstract , time - change filter wave , restraining or attenuating some frequency range and other characters of wavelet . furthermore , the ratio of signal to noise has been improved greatly and it is not affected by signal state
而利用小波分析的时频局部化分析、局部特征提取和时变滤波、抑制或衰减某些频率区间等特点，能更有效地把真实信号和噪声信号区分开来，达到消除噪声的目的，并且这种方法恢复的信号，信噪比有明显的提高，还不受信号的状态的影响。
Aiming to solve this problem , the work of the thesis is shown below : 1 . the product ambiguity function ( paf ) - based adaptive time - frequency distribution is proposed . in specific , two adaptive methods for kernel design , the radon - paf based method and the paf - lag - varying filter based method , are presented
本文针对这一问题开展了如下工作: 1 .提出了基于乘积性模糊函数的自适应时频分布,并给出了两种针对线性调频信号的自适应核函数设计方法,包括基于radon - paf滤波和基于paf时变滤波的方法,使得该时频分布能够在增强时频聚集性的同时抑制交叉项。