查询词典 signal noise ratio

The simulation results indicate that comparing with the classical Wiener filter, this method performs better in visual effect, mean square error and peak noise-signal ratio, and is an effective method for image restoration.

仿真实验表明，从视觉效果、均方误差和峰值信噪比等方面进行比较，其恢复效果比经典的维纳滤波法好，是一种有效的方法。

This influence can filtrate ascending information and enhance noise-signal ratio.

总以上所述，本文首次论证了扣带皮层对丘脑触觉上传信息具有调制性影响，这种影响可能对上传信息的筛选和信噪比的提高产生了重要的作用。

A low cost portable upper atmospheric sounding system used by both balloon and m icrorocket is presented, which has much lower ratio of signal to noise and wid er bandwidth.

本文介绍通过提高接收系统的信噪比同时采用宽波束接收天线，研制了一套低成本、轻便式高空大气探测简便系统。

In order to maximize the ratio of the received signal power to the noise and interference power, an optimization method, which uses the criteria of minimizing the highest side-lobe, is proposed to optimize the DWMT filter banks. Design results indicate that this method has better spectral separation property.

本文按照接收信号噪声干扰比最大的系统设计要求，采用滤波器组最大副瓣最小化准则，提出了一种用于DWMT系统的滤波器组优化方法，结果显示具有较好的频谱隔离特性。

The characteristics of genetic algorithm,global searching of Genetic Algorithm for complex,multi-apices,and nondifferentiable nonlinear function are applied to the Hopfield neural network,which results in the inputting pattern getting away from the attraction domain of fault pattern and the Hopfield neural network associative memory remaining high success rate while the noise to signal ratio is high.

0引言Hopfield神经网络模型在神经计算、优化求极值、联想记忆等方而取得了重大应用，联想记忆能够从不完整的或模糊的信息中联想出存储在记忆中的某个完整清晰的图像模式，但一般离散Hopfield模型存在很多伪稳定点[2]，这些伪稳定点的存在，不仅使真稳定点的吸引域变小，而且使网络

Under certain ratio of signal-to-noise and through the computer simulations and calculations, the performances in Mbius digital base band communication system of five often used modem function set, those are the even and odd symmetrical triangle wave, even and odd symmetrical square wave and saw-tooth wave and their inverse transforms, are simulated 10000 times, and the fluctuation ranges of the error rate P(subscript b are observed.

在一定信噪比的前提下，通过计算机仿真和编程计算，对Mbius数字基带通信系统中偶对称三角波、奇对称三角波、偶对称方波、奇对称方波和锯齿波这5种常用的调制解调函数族及其逆变换进行仿真1万次，观察错误概率P

All of these new researches depend on the improvement of resolution of the seismic exploration and the ratio of signal-to-noise.

软件系统的开发更是加快了井资料的应用，也为处理方法的推广起到了极积的推动作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。