1) 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。
2) bilinear time-frequency distributions
双线性时频分布
1.
An analysis on cross-terms interference of bilinear time-frequency distributions for multi-component chirp signals, which often appear in some engineering applications and many natural phenomena, is given in this paper.
以广泛出现在许多工程应用领域和物理现象中的多Chirp成分信号为对象,研究了双线性时频分布对这种信号时频分布的交叉项特点,推导了几种分布的交叉项的数学表示,从模糊平面分析了交叉项抑制的机理,提出了双线性时频分布对多Chirp成分信号时频表示存在局限,仿真试验结果显示理论分析正确。
3) 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。
4) Cohen bilinear time-frequency distribution
Cohen类双线性时频分布
1.
In the nonstationary signal processing technology Cohen bilinear time-frequency distribution technology has the good time frequency resolution,WVD time frequency resolution has achieved the indefinite principle bottom,has the unique superiority in the nonstationary signal processing te.
非平稳信号处理技术中的Cohen类双线性时频分布技术拥有良好的时频分辨率,其中的WVD的时频分辨率已达到不确定原理下界,在非平稳信号处理技术中有独特优势。
5) bilinear time-frequency distributions(BTFD)
双线性时频分布(BTFD)
6) Time-frequence distrbution
时间-频率分布
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