查询词典 SNR

This paper proposed a novel scheme to estimate SNR so that the gain predictor can be separately optimized with the quantizer.

本文提出一种信噪比估计方法，可使增益预测器的优化与量化问题分开处理。

Because quantizer has not existed at optimizing gain filter, the quantization SNR can not be used to evaluate its performance.

但是，由于考察增益预测器时量化器还不存在，因此无法用量化信噪比评价滤波器性能。

The model of the received power is established based on the basic principles of geometry optics and radiometry. This model provides the principle of receiver-transmitter design and performance evaluation. On the basis of the received power model and APD noise model, the response of measurement signal after passed through the frequency difference circuit and the corresponding change of its SNR are studied.

研究了非合作目标测距时，发射视场与接收视场的重叠情况，以及视场重叠区域内光的探测情况，并以此为基础，根据几何光学和光度学的基本理论，建立了非合作目标测距中接收光功率的数学模型，为接收/发射器的结构设计，以及测距性能的预测提供了理论依据。

Experimental results show that the algorithm works with rapid convergence speed and high improvement of SNR and has the prospect of wide applications.

仿真结果表明，该算法具有信噪比增益高、收敛速度快等特点，有较为广泛的应用前景。

The relation of the SNR and the coefficients of the filter adopted is deduced. The steps by the Rayleigh quotient method to obtain the optimal desampling FIR filter are also presented.

推导了信噪比增益与降采样滤波器权系数的关系，给出了采用Rayleigh商方法求解给出准则下最优FIR滤波器的方法和步骤。

In the process of quantum information memory and transmission, the quantum noise of light field will have the certain influence on the SNR of information read-out.

另一方面，由于原子相干效应介质中较大的色散特性，对其作用场量子噪声特性的研究，也间接提供了一种测量激光场位相噪声的方法。该论文讨论了原子相干效应介质中与之作用的探测场的量子噪声特性。

The SNR of brain white matter and the background standard deviation were measured within ROI,which cov ered a large homogeneous area of white matter.The mean pixel values were recorde d within the ROI which was positioned of the head of the femur.

设定兴趣区，并测定脑白质均匀区域的信噪比及背景的标准差，以及以盆腔股骨头为ROI，记录ROI的平均值，交替测量肌肉区域的平均值及背景的标准差。

In order to find a kind of PR signal which has good recording performance and is easy to realize under high recording density, the frequency characteristics and the optical recording channel output SNR are compared with the method of simulation and mathematical analysis.

提出了一类适合光记录的部分响应信号，通过仿真和数学分析的方法，分别对这类信号的频率特性和记录信噪比进行了比较，目的在于寻找在高记录密度下既有好的记录特性又便于实现的部分响应通道。

However, this algorithm only gives good results under high SNR conditions and moderate reverberation environment.

但是此方法只能在高信噪比和适度混响条件下有较好的性能。

Objective To study whether mechanical noise acting on the sacculus could enhance the SNR of the 8th nerve's response.

目的 探讨作用于牛蛙球囊的噪声是否能够增强它的功能。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。