To counter the characteristic of suppress jamming and center of mass jamming, this paper establishes the models of noise jamming, signal power attenuation and center of mass jamming.
针对压制干扰和质心干扰的特点，分别建立了噪声干扰模型、信号功率衰减模型和质心干扰模型。
The improved smooth algorithm based on the characteristic sub-space used deepen the null to fall the depth, enhanced the system's signal to noise ratio.
研究了改进的基于特征子空间的平滑算法，加深了零陷深度，提高了系统的信噪比。
The experiment results show that the new technique outperforms the conventional spectral subtraction methods in spectrogram characteristic, output signal-to-noise ratio (SNR) and aural performance.
实验结果表明，新算法比传统谱相减算法有更优的语谱特性、更高的输出信噪比和更好的听觉性能。
A method for reducing noise based on high-order spectra was presented by which the signal-to-noise ratio (SNR) could be improved significantly and the flaw characteristic information could stand out.
提出了基于高阶谱的减噪方法，能有效提高回波信号的信噪比，减弱检测噪声对于缺陷散射特征的影响，从而突出缺陷特征信息。
According to the characteristic difference between ship hydraulic pressure signal and wave noise signal, this paper presents a slow trace LMS algorithm to whiten wave noise signal.
根据舰船水压信号与海浪噪声的特点，用慢跟踪lms算法对波浪噪声进行白化处理。
Due to different wavelet threshold fit for different characteristic of signal, various wavelet de-noise threshold was used to decline the harmonics of signal and the best threshold was chosen.
由于在小波降噪中不同的阈值适应的信号特征不同，采用多种小波阈值对城市轨道交通牵引供电系统谐波信号进行降噪，并从中选择了最优的降噪阈值，达到对信号的优化处理。
After noise reduction in the signal, using "wavelet packet-energy" to extract the characteristic vector and input them to the neural network for fault identification.
在对采集到的信号降噪后，利用“小波包-能量”法提取特征量，并将其输入到神经网络中进行故障识别。
Based on local signal to noise ratio, the method estimates characteristic component of speech sound sub band covered by noise.
一种根据局部信噪比，估计受噪声掩蔽的语音子带特征分量的方法。
In this way, after atmosphere correction the signal-to-noise ratio characteristic of OMIS images can reflect that of the OMIS instrument sufficiently.
这样在大气订正后，图像的信噪比性能充分反映出遥感仪器的信噪比性能。
In this way, after atmosphere correction the signal-to-noise ratio characteristic of OMIS images can reflect that of the OMIS instrument sufficiently.
这样在大气订正后，图像的信噪比性能充分反映出遥感仪器的信噪比性能。
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