1) bilinear time-frequency transformation
双线性时间-频率变换
1.
According to the principle of kernel function spectral decomposition,the authors express the discrete real kernel as a symmetric matrix,and indicate the discrete bilinear time-frequency transformation as a weighted sum of discrete spectrograms with eigen-decomposition of symmetric matrices.
根据核函数的谱分解理论,把实离散核函数表示为实对称矩阵,利用对称矩阵的特征分解把离散时间双线性时间-频率变换表示为离散时间频谱图的加权和,用频谱图的部分和实现双线性变换的快速近似计算。
2) bilinear time-frequency transform
双线性时频变换
3) bilinear time-frequency distribution
双线性时间-频率分布
1.
To detect transient signals under complex background,a novel method of aliasing-free exponential bilinear time-frequency distribution is presented in this paper,which can avoid the frequency aliasing and information loss existing in the traditional bilinear distributions,reduce the crossterms effectively and possess high time-frequency resolution.
针对复杂背景条件下瞬时信号的探测,提出一种新的无混叠双线性时间-频率分布方法,该方法能够避免常用的双线性时频分布中的频率混叠与信息丢失,有效减小交叉项干扰,而且具有较高的时频分辨率。
4) Nonlinear frequency conversion
非线性频率变换
1.
Laser technique experiment based on nonlinear frequency conversion
基于非线性频率变换的激光技术实验
5) time-frequency selective fading
时间-频率双选择性衰落
6) ultra linear voltage-to-frequency converter
超线性电压-频率变换器
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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