噪

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。

First, we have designed an effective method independent of quantizing signal noise rate in evaluating the performance of gain filter. This provides a way to compare and evaluate different optimizing schemes before gain quantization, forms a way of independent research between gain predictor and gain quantizer.

第一，提出了一种不依赖量化信噪比评价增益滤波器性能的方法，可在增益量化之前直接比较评价增益预测器的各种优化方案，形成了增益预测器与增益量化器分别独立进行优化的方法。

In this paper, based on the comparison between CMOS and CCD image sensor and according to the principles of photometry and radiometry, the imaging range formula of CMOS image sensor in space-based system for space targets is derived with detail analysis, considering the metric of Signal-to-Noise Ratio and taking deep space as background.

在对CMOS和CCD传感器进行对比的基础上，从信噪比的角度出发，以深空作为背景，根据光度学和辐射度学的基本原理，对基于CMOS图像传感器的天基空间目标监测系统的成像距离进行了详细分析和公式推导，并以STAR-1000 CMOS图像传感器为例验证了理论模型和计算公式的正确性，最后对进一步提高CMOS图像传感器成像距离的方法进行了简要分析。

Second, install one, the installation of diesel generators, engine room noise reduction, open-air field rainproof, mobile mute and automatic parallel system.

二、安装 1、柴油发电机的安装，机房降噪，露天野外防雨，移动静音和全自动并联系统。

Signal to Noise Ratio: The ratio of the signal to the random noise in a set of data.

信噪比：平均到一个数据单元的信号与随机噪声的比值。

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。

Analytical variance of the estimation declines linearly by increasing the bit signal-to-noise ratio for the proposed channel estimator.

理论分析结果表明，该算法的对数估计方差随比特信噪比的增加而线性减小。

Multicollinearity ; condition index ; variance decomposition proportion ; signal-to-noise ratio ; partial ridge estimator

复共线性；条件指标；方差分解比；信噪比；部分岭估计

The instantaneous SNRof the receiver of STBC over raying fading is illustrated, based on this, the closed impression of STBC's symbol error rate is educed with M-PSK and M-QAM modulation and also presents the numerical results.

给出在瑞利衰落信道下正交空时分组码瞬时接收信噪比的一般表达式，在此基础上推导出正交空时分组码在M-PSK和M-QAM调制下误符号率的闭式表达式，并给出数值分析结果。

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。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。