信噪比增益

与Barker码相比，使用增加长度的最优序列进行编码激励可以获得更高的信噪比增益，同时保持与Barker码相近的距离旁瓣水平。

Compared with Barker codes , the longer optimal binary sequences provided higher SNR gain , while similar range sidelobe level was remained .

随机共振在过去几十年里被认为是实现信噪比增益（SNRGain）大于一的突破口。

Stochastic Resonance ( SR ) is regarded as a breakthrough point to get larger SNR Gain in the past several decades .

最后，通过MATLAB仿真演示了信号增益和信噪比增益与输入噪声强度的关系。

It demonstrated the relation of the signal gain and the signal-noise-ratio gain and the input noise intensity through the MATLAB simulation .

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。

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 .

海上试验数据处理结果表明，利用本文提出的权向量实现相关阵比CBF阵有较高的信噪比增益和较好的抗噪声干扰能力。

It is shown experimentally that the gain of correlation array using the set of weighing coefficient is higher and the anti-perturbation performance is better than those of the CBF arrays .

理论分析和IEEE多径信道模型的仿真表明：该接收机的比特误码率明显优于传统自相关接收机，在10-2误码率时约有2dB的信噪比增益。

The theoretical analysis and simulation of the IEEE multipath channel models show that BER performance of the receiver is obviously superior to the conventional autocorrelation receivers and has about 2 dB signal-to-noise ratio gain at 10 ~ ( - 2 ) BER .

结果表明，改进了的算法比原算法对背景抑制参数（BSF）和信噪比增益（SNIR）都有所改善，对于红外起伏背景的估计具有一定的实际意义。

The results show that the improved algorithms are better than the original one both in BSF ( Background Suppression Factor ) and SNIR ( Signal Noise Improvement Ratio ) . And it has practical value in engineering .

论述了PIS-DT的基本原理，分析了其抗噪声性能，导出了PIS-DT的信噪比增益公式，并将其与叠加平均法和噪声抵消法进行了比较，得到了PIS-DT的适用范围。

The basic principles of PIS-DT have been discussed , the SNR gain formula of PIS-DT is derived , which compared with stack average method and noise cancellation method to obtain the applicable scope of PIS-DT . 3 .

千兆以太网的四维8状态网格编码提供了无干扰无噪声情况下的6dB信噪比增益，判决反馈时序估计电路被用于消除后馈干扰、抑制噪声及译码。

4D 8-state trellis encoding of 1000 Base-T provides 6 dB coding gain in an inter-symbol interfere ( ISI ) and noise free channel . Decision feedback sequence estimator ( DFSE ) is used for post-cursor ISI compensation , noise erasion and decoding .

复杂随机系统的信噪比增益研究与阵列随机共振

Signal - to-noise Ratio Gain in Complex Random Systems and Array Stochastic Resonance

研究表明，系统信噪比增益得到提高并且显示出良好的距离分辨能力和方向分辨能力。

Research results show that the SNR is improved in the system with good distance resolution and angular resolution .

推导出了声参数变化时的信噪比增益与结构噪声相关函数的关系。

The relation between the signal-to-noise enhancement and the correlation function of the structure noise for varying acoustic parameters have been deduced .

结果表明在非高斯噪声情况下，通过调节参数可以得到比在高斯噪声情况下更好的信噪比增益。

The results indicate that larger SNR gain can be derived via tuning system parameters in non-Gaussian cases than that in the Gaussian noise .

仿真结果表明：相对于单一使用一种去噪方法，混合去噪算法能更有效地去除指纹图像中的椒盐和高斯混合噪声，获得了较好的峰值信噪比增益。

Simulation result indicates that mixing denoise algorithm is more effective than using a single denoising method , and acquire better peak value signal-noise-ratio gain .

对舰船雷达回波信号实验检测结果表明，该方法能较好地改善信噪比增益，同时又能保持对突变信号的良好分辨率。

Experimental results show that the method can improve signal and noise ratio greatly . At the same time , it has better resolution for singular signal .

不过后来的研究都表明，在线性响应理论的限制条件之外，可以比较容易的获得大于1的信噪比增益。

However , beyond the limits of linear response theory , some researches showed that the fact of the SNR gain exceeding unity can be easily observed .

同时进一步分析了在大信号、高泵浦功率条件下高速光脉冲信号放大过程中的各种畸变特性以及放大的自发辐射对系统信噪比增益的影响。

The character of high speed light pulse distortion and the fluency of the amplified spontaneous emission on the SNR gain under high power signal and pumper are analyzed .

工作中的水听器基阵所处的姿态不总是唯一的，为了计算水听器基阵的信噪比增益，我们必须知道噪声场空间任意方向上的相关系数。

For the calculation of signal-to-noise gain of a hydrophone array , spatial-correlation in arbitrary direction is more needed because of the variant pose of the array in the real .

实验结果表明，采用新阈值函数的去噪结果能够有效地抑制图像的马赛克效应，无论在视觉效果上，还是在信噪比增益上均优于传统的软、硬阈值方法。

Experimental results show that the denoising algorithm can mitigate the mosaic appearance effectively and the numerical results also show that the new algorithm give better PSNR gains than conventional soft and hard threshold algorithm .

同时针对变换编码图像数据丢失提出了一种基于变换域利用相邻子块的边界信息估计受损子块信息的技术，以及对丢失信息最优估计的实现算法与信噪比增益的解析形式。

A new technology is proposed for image recovery in transform coding based on the boundary information of adjacent blocks , the algorithm for estimating the optimal solution and the analytical form of the gain of SNR .

在一定条件下，由于系统、信号和噪声的协同作用而产生随机共振现象，并通过某一噪声强度下的信号增益及信噪比增益表现出来。

Stochastic resonance occurs in a certain case due to the co-operation of the system , signal and noise ; and it is demonstrated by the signal gain and the signal-to-noise ratio gain in a certain noise .

该方法既避免了矩阵运算、降低了运算量，又能在获得一定改善信噪比增益的同时，保持对信号波形细节的较好分辨率，并且对待检测信号形式不敏感。

Such method not only avoid calculation of matrix , reduce amount of calculation , and also in the mean time of acquiring improvement of Signal-to-Noise plus maintain good resolution rate for signal details and insensitivity to the patterns of signal detected .

使用理论分析与仿真的方法，分析了伪随机序列参数与测量性能之间的关系，结果表明测量系统的线性、测量误差以及信噪比增益都与伪随机序列的周期有关。

Through theoretical analysis and simulation , the relation between the performance of measurement and the parameters of PNs was shown that the linearity of system , mean square error and improvement factor of signal-to-noise ratio all were determined by the period of PNs .

试验结果显示，在脉冲噪声密度小于5%时，该算法的滤波信噪比增益远高于常用滤波算法和其他同类算法；

The experimental results show clearly that the growth of SNR using this algorithm is much higher than those of other common algorithms and similar algorithms whenever the density of impulse noise is below 5 % , and the algorithm is more suitable for processing steadily changed signals .

本文研究自适应波束成形声呐设计中的几个问题。其一是自适应波束成形系统的极限分辨力，我们给出这种系统输出信噪比和增益的一般表达式。

Some problems of designing adaptive beamforming sonar are considered .

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。

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 .

由于图像增强型CCD（ⅡCCD）相机具有高信噪比、高增益、能在微光条件下稳定的工作等优点，在遥感和军事中具有广阔的应用前景。

Because the Image Intensified CCD ( IICCD ) camera works in dim light conditions , with high gain , high SNR , a lower illumination level in the work , it is widely used in remote sensing and military .

针对运动目标，在考虑激光雷达方程、信噪比和自动增益、成像指标、噪声、图像处理等模块的基础上，对脉冲相干成像激光雷达进行了运动目标的成像模拟。

On the basis of considering the modules of laser radar equation , SNR and AGC , imaging demand , noise and imaging proces , we make a simulation of pulsed coherent imaging laser radar for moving target .

仿真表明，在目标BER为10-4下，此自适应OFDM方法与相同吞吐下的固定Turbo编码调制相比，有7.5dB以上的信噪比（SNR）增益。

Simulation results showed that the adaptive OFDM scheme exhibited more than 7.5 dB SNR gain for a target BER of 10 ~ - 4 relative to non-adaptive Turbo coded modulation for the same throughput .

实验表明用这种信噪比估计方法选择增益滤波器十分有效。

Experiments show that it is very effective using this method of evaluating gain filter performance .