1) short frequency time transform
短频时间变换
2) time-frequency short time Fourier transform
时频短时傅里叶变换
1.
The analysis of time-frequency short time Fourier transform(STFT) based on noncoherent integration can increase the processing gain of the receiver and its capability of intercepting the nonstationary signals effectively,thus improving the detection performance of the system.
数字信道化接收机是一种新型接收机,非相干积累的时频短时傅里叶变换,能有效地增加接收机的处理增益和对非平稳信号的截获能力,从而提高数字信道化接收机的整体检测性能。
3) frequency converting time
换频时间
4) time-frequency transform
时频变换
1.
A channel estimation model of time-frequency transform OFDM system;
一种时频变换OFDM系统的信道估计模型
2.
In this paper, the development and trend of those detecting algorithm on time-frequency transform are reviewed from single scale detecting ways, such as filters to multi-scales detecting ways based on wavelet analysis and a new multi-scales method experimental mode decomposition(EMD).
简要回顾了以滤波器为代表的单一尺度时频变换方法、以小波分析为代表的多尺度时频变换方法,以及另一种较新的多尺度时频变换分析方法—经验模式分解(EMD)等在QRS波群检测中的应用情况和发展前景。
3.
Therefore we present a non-uniform time-frequency transform (NUTFT) to replace the ordinary time-frequency transform used in short block.
设计了一种非均匀时频变换方法,它在保留了对信号低频平稳分量的频率分辨率的同时提高了对高频暂态分量的时间分辨率。
5) frequency-time domain transformation
频时变换
6) short time fourier transform
短时Fourier变换
补充资料：离散时间信号的Z变换
见变换&dbname=ecph&einfoclass=item">Z变换。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条