instantaneous spectrum的例句大全

Though there are several methods available for instantaneous spectrum estimation, the contradiction between precision and resolution is not yet reconciled, and the modeling of instantaneous spectrum is even more rarely studied.

虽然已有不少信号处理方法被用于地震动的瞬时谱估计，但一直未能解决好精度和分辨率的矛盾，而在此基础上的地震动瞬时谱的模型化研究则更是空白。

After processed by narrow band com-plex filtering or narrow band recurrence filtering and Hilbert trans-formation, real signal is transformed into narrow band complex sig-nal, whose instantaneous spectrum is then used to solve for tensor impedance element.

本文通过对记录上的实信号做窄带复数滤波或窄带递归滤波和希尔伯特变换，转换成窄带复信号，再由复信号的瞬时谱求出张量阻抗元素。

time-frequency features, such as energy spectrum and amplitude weighted short-time average of the instantaneous frequency, are compared based on the sinusoidal speech model, and some experiments are carried out in connected digits recognition system based on hidden markov models.

对基于正弦模型的多种时频参数（能量谱和幅度加权瞬时频谱）进行了比较，并在基于隐马尔可夫模型的连接词语音识别系统中进行了实验仿真。

firstly, the wideband signals are focused on the instantaneous frequency respectively with symmetric antenna and bi-linear transformation. secondly, the correlation matrices are constructed on the signals' instantaneous frequency. with music spatial spectrum, the doas will be obtained at last.

该算法利用对称阵子和双线性变换可将多个宽带信号聚焦至各自的瞬时频率，再通过傅立叶变换，在信号各自的瞬时频率上构造相关矩阵，由此构造MUSIC空间谱可获得信号的DOA。

Based on the local characteristics of signals, a local wave method ( LWM) can be employed to obtain the instantaneous frequency of signals and the Hilbert time frequency spectrum composed of an energy time frequency three dimensional distribution.

局域波法是基于信号局部特征，通过该方法可得到信号的瞬时频率和构成能量-时间-频率三维分布的Hilbert时频谱。

In constant phase correction of seismic record, the phase spectrum plus a constant and the instantaneous phase plus the same constant can bring the same result.

在实现常相位校正时，在记录的相位谱上加一个常数与在记录的瞬时相位上加同一个常数，结果是相同的。

Measure quickly can help capture instantaneous signal, understand spectrum thoroughly.

迅速测量可帮助捕捉瞬时信号, 破碎地舆解频谱.

It is found that the emission intensity of discharge filament presents a distribution like a goblet with base locating at instantaneous cathode in each half period of the applied voltage. The intensity of the spectrum distributing is symmetrical.

实验发现：在外加电压的每半周中，放电丝发光呈现酒杯型分布，杯底位于瞬时阴极处；光谱强度在放电通道的两端最强，而中间最弱，基本成对称分布。