signal-noise ratio
英 [ˈsɪɡnəl nɔɪz ˈreɪʃiəʊ]
美 [ˈsɪɡnəl nɔɪz ˈreɪʃioʊ]
网络 信噪比; 比例; 信号杂讯比
双语例句
- The result shows that this method can promote the signal-noise ratio and the extracted characteristics reflect the change of the technical states of diesel engine.
分析结果表明，此方法能够提高信噪比，提取的振动信号特征能够反映柴油机技术状态的变化。 - Depend on the method of duplex detecting with spectro-polarization, the system has great CMRR and high signal-noise ratio.
系统采用分光双路检测，具有高共模抑制比和信噪比。 - When searching the optimal geometric transform parameters, peak signal-noise ratio ( PSNR) was selected as the similarity measure between the reference and floating images.
在寻找最优几何变换参数时，采用峰值信噪比（PSNR）作为参考图像和浮动图像的相似性测度。 - Signal-noise ratio of the system is improved with double beam mode and correlative detection technology.
采用双光束相关检测技术，改善了系统的信噪比。 - Wavelet breadths of edges and noise display different identities with increasing of the scale, so edges and noise can be respectively detected from the signals of low signal-noise ratio.
随尺度增加，边缘和噪声的小波幅值表现出不同变化特性，从而在低信噪比的信号中检测出噪声和边缘。 - The simulation experiment shows that the Peak Signal-Noise Ratio of de-noising image is increased 1~ 2 dB, and the validity of this algorithm is demonstrated.
仿真实验结果表明，去噪后图像的峰值信噪比提高了1~2dB，从而证明了该方法的有效性。 - Based on the relative fluctuation C ( 0) of light intensity and signal-noise ratio ( SNR) of the output of the single-mode laser gain system of input signal, the physical value K is defined to describe the overall output of the laser system.
根据输入信号的单模激光增益系统的光强相对涨落C（0）和输出功率信噪比SNR，定义了物理量K，以描述激光系统的整体输出性质。 - We have improved fringe search method for processing VLBI data at low signal-noise ratio ( S/ N).
为了处理低信噪比（S/N）的VLBI观测数据，我们对现有的条纹搜索方法做了改进。 - To detect infrared signal, a novel electric modulation method and a lock-in amplifier technology are used to improve signal-noise ratio.
红外信号检测电路采用了一种新颖的电学调制和锁相放大技术，实现了提高检测信噪比的目的。 - At the same time, the valid separation of these linear interference wave increases the signal-noise ratio and resolutions of the record which only aims at obtain the reflect wave information.
对反射地震资料处理目标，这些线性干扰波的有效分离也就自然提高了反射波信息的信噪比和分辨率。 - This paper builds up the fault signal model of antifriction bearings and, based on two different diagnostic methods, respectively calculates the signal-noise ratio of this model.
本文建立了滚动轴承故障信号模型，针对轴承故障诊断中两种不同的诊断方法对故障信号模型分别进行了运算，并在理论上对两种诊断方法的信嗓比大小进行了比较。 - The signal compensation current degrades the radiation background and increase the signal-noise ratio respectively.
设计的信号补偿电路，扣除了直照信号的本底干扰，提高了探测器的信躁比。 - Signal detection under low signal-noise ratio in passive detection is increasingly needed.
被动探测中，低信噪比下检测信号的方法备受关注。 - Higher probe power has advantage to obtain higher signal-noise ratio but go against extinction ratio;
若增加探测光功率则有利于提高信噪比，而不利于提高消光比，因此需要在综合考虑信噪比和消光比的基础上确定探测光功率； - Finally, experimental results are listed to show that the zero tree wavelet encoding can improve the peak signal-noise ratio to some extent with good compressing effect in the case of reducing computation complexity.
最后，给出了实验结果，结果表明在降低了运算复杂度的情况下，仍然提高了峰值信噪比，具有良好的压缩效果。 - The experiment results show that the new scheme is able to achieve a reduction of up to 30% encoding time for I frames of image sequences, with negligible Peak Signal-Noise Ratio ( PSNR) loss and bit rate increase compared with the original H.264/AVC reference software.
实验结果表明，该方法可以使图像序列的I帧编码速度提高近30%，且与原全搜索算法相比，其峰值信噪比（PSNR）的减少和比特率的增加均小到可以忽略不计。 - Improving both seismic signal-noise ratio and resolution by vertical wavelet package transform and lateral polynomial fitting
利用纵向小波包变换和横向多项式拟合提高地震信号的信噪比和分辨率 - The signal-noise ratio of detectors and the image quality will be affected by the detector cross-talk noise.
探测器的串扰噪声会对探测器的信噪比以及高能工业CT的图像质量产生很大的影响。 - The simulation results show that the presented method improves the channel estimation performance of the system obviously in the condition of high signal-noise ratio and can also be applied to the high speed mobile channel environments.
仿真结果表明，所提方法在较高信噪比条件下，明显提高了系统信道估计的性能，且适合于高速移动的信道环境。 - This optimization object function was applied to the blood oxygen saturation measurement system and a higher signal-noise ratio was achieved.
将此目标函数应用到血氧饱和度无创测量系统中，提高了系统的信噪比。 - The seismic record after spectrum whitening is stacked by weighting with the value of the signal-noise ratio;
对谱白化后的地震记录用信噪比估计值作为加权系数进行加权叠加； - Signal can be seperated and filtered with high signal-noise ratio by multi-resolution analysis;
用多分辨率分析对信号进行高信噪比分离和滤波； - By establishing the random signal model and introducing the noise and signal in the form of their product, signal-noise ratio has been raised apparently and total signal power has been promoted greatly. The problems of signal errors in logging have been resolved to a certain degree.
通过建立随机信号模型，将噪声和信号以相乘的形式引入，不仅使信噪比大大提高，还使总信号功率极大地得到提升，从一定程度上解决了测井中信号的误差问题。 - Using combined bins of observations can raise the signal-noise ratio of data and improve the time delay precision to such a level at which precision of time of arrival can be achieved. It avoid the influence of data sampling interval on time delay determination precision.11.
利用观测数据并道，在提高数据信噪比的同时可达到将时延测量精度提高到脉冲到达时间测量精度的效果，避免了数据采样间隔对时延测量精度的影响。 - Evaluating parameters such as correlation coefficient, minimum mean square error, normal mutual information and signal-noise ratio are used to assess objectively the registration results.
分别用相关系数，最小均方误差，归一化互信息，信噪比等评价指标对多组实验的配准效果进行了客观评价。 - A method for model reliability analysis is proposed which estimates the model reliability by comparing the Signal-Noise Ratio of models that reflect the spatial frequency spectral signal and errors.
研究并提出了对模型进行可靠性分析的方法，通过计算模型的信噪比反映了各模型空间频谱信号和频谱误差的强度，对模型的可靠性做出分析。 - Experiment results show that evaluation of this method is closer to human perception than Peak Signal-Noise Ratio.
实验表明，这种方法评价比峰值信噪比等图像质量评估指标更接近人类主观感受。 - Experimental results show that this algorithm has overcome the disadvantages of soft and hard threshold de-noising methods, and obtained a better de-noising performance and a higher signal-noise ratio ( SNR).
实验结果表明，该方法改进了软、硬阈值去噪法的缺点，获得了更好的去噪性能和更高的信噪比，而且在实时信号去噪方面具有很好的应用前景。 - Low altitude airborne platforms with high mobility need high pulse repetition rate and signal-noise ratio, thus request radar transceivers to have lower phase noise and as higher frequency switching speed as possible.
但高机动机载平台又需要很高的脉冲重复频率和信噪比，这样对步进频率收发系统的频率切换速度和相位噪声又提出了更高的要求。 - As to the weak signal in Raman scattering, the average time-domain superposition algorithm and wavelet multi-resolution analysis has been used to reduce the noise and extract the useful signal in order to improve the signal-noise ratio significantly.
针对微弱的拉曼散射信号，本文采用时域叠加平均算法和小波多分辨率分析相结合的方法降低系统噪声干扰，提取有用的温度信号并显著地改善了信噪比。