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1)  TFDS
时频分布级数
1.
By replacing the conventional Fourier processor with the time-frequency distribution series(TFDS) processor,a 2-Drange-Dopple Fourier ISAR frame becomes a 3-D time-range-Doppler ISAR cube.
应用了时频分布级数方法代替传统的傅立叶变换对机动目标进行瞬时成像,得到一个三维的时间-距离-多普勒阵,对时间进行采样即得到瞬时的二维距离-多普勒像。
2)  time-frequency distribution series
时频分布级数法
1.
The time-frequency distribution series(TFDS) has been tested effective in the balance of the cross-term suppression and the time-frequency resolution.
时频分布级数法在保持高时频分辨率的前提下,有效抑制了Wigner分布的交叉项,但运算量问题制约了其在工程应用中的普及。
3)  time-frequency distribution series (TFDS)
时频分布级数方法
4)  time-frequency distribution
时-频分布
1.
Preliminary analysis of time-frequency distribution of transient evoked otoacoustic emission in normal hearing human subjects;
正常人耳瞬态诱发耳声发射的时-频分布初步分析
2.
Thus, the standard time-frequency distribution images of all fault conditions including the gap abrasion in-formation of the main bearing can be defined.
通过该方法,可以得到含有内燃机主轴承间隙磨损状态的时频信息,定义出各个标准故障状态的时-频分布图,建立了基于图像匹配技术的内燃机主轴承磨损故障诊断模型。
5)  time frequency distribution
时频分布
1.
A signal adaptive time frequency distribution(TFD) radial Gausian kernel TFD is studied.
对一种可调核函数的时频分布——径向高斯核函数时频分布 (RGKD)进行了研究 ,并将径向高斯核函数时频分布引入机械故障诊断。
2.
The time frequency distribution (TFD) can analyze non stationary signals in both time and frequency domain.
基于时频分布能同时分析信号在时间域和频率域的特点 ,针对 CDMA Overlay通信系统中时变窄带干扰抑制问题 ,提出了一种广义的时频分布——时变换域分布 ,利用接收信号的时变换域分布获得干扰的瞬时频率 ,并据此设计相应的时变滤波器对干扰进行抑制 。
3.
According to the seismic signals produced by moving targets such as the persons and vehicles moving on the ground, this paper studies their time frequency distribution characteristics by using the typicae time frequency analyzing method STFT so that modified complex convolution time varying filter method is used to do signal detection, thus improving the ratio of signal to noise.
针对人员、车辆等地面目标运动时产生的地震动信号 ,通过典型时频分析方法STFT研究其时频分布特性 ,进而应用修改的复数卷积时变滤波方法进行信号检测 ,使信号信噪比得以提高 ,可从中提取更有效的特征向量为目标识别所
6)  time-frequency distribution
时频分布
1.
Research on the weak signal detection technique and application based on time-frequency distribution;
时频分布的弱信号检测技术的研究及其应用
2.
Computationally efficient time-frequency distribution with recursive structure;
具有迭代结构的时频分布计算方法
3.
Time-Frequency Distribution and Multi-target Resolution of Radar Signal;
时频分布与雷达信号的多目标分辨
补充资料:哭李频员外时在建川
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【出处】:
全唐诗:卷716-35
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