The influence of multi-beam interferences, and the relation between the signal to noise ratio and the random drifts of the scanning wavelength are deduced. 理论分析了法布里-珀罗腔多光束干涉所产生的干扰以及扫描过程中波长的随机漂移对输出信噪比的影响。
Improvement of signal noise ratio of TMC optical system by SiC surface modification technology 应用SiC反射镜表面改性技术提高TMC光学系统信噪比
The validity and feasibility of the algorithm is tested through a simulation experiment and two appraisal criterions& mean square error ( MSE) and peak value signal to noise ratio ( PSNR). 通过仿真实验结果及均方误差(MSE)和峰值信噪比(PSNR)两种评价准则说明了该算法的有效性和可行性。
In this paper, a blind despreading algorithm is proposed for the synchronous multi-user long-code Direct Sequence Spread Spectrum ( DS-SS) signals in low Signal to Noise Ratio ( SNR) scenarios. 针对同步多用户长码直扩信号,该文提出了一种低信噪比条件下的盲解扩算法。
Related detection must guarantee signal synchronization sampling, and get the biggest signal noise ratio. 相关检测要保证信号同步采样,可以得到最大信噪比。
At the same time it reduces the losing of the details of picture information and raises the signal noise ratio of the algorithm of median filter. 同时减少了图像细节信息的丢失,提高了中值滤波算法的信噪比。
It is demonstrated that ML estimating error can converge to CRB quickly with increasing synthetic aperture length and Signal to Noise Ratio ( SNR), but a threshold effect exists. 研究表明,随着合成孔径长度和信噪比的增加,ML估计误差可以很快地收敛于CRB,但存在阈值效应。
Detect effect will be much lower with these methods in low signal noise ratio environment. 在低信噪比环境下,利用上述方法进行语音端点检测,检测效果将大大降低。
From the numerical analysis, we proved number of hopping, the dwell time of the follower jamming, and signal to noise ratio are important parameters of the jamming effect. 从数值分析中证明快跳频的跳频数、干扰的驻留时间与讯杂比都是影响追随干扰效果的重要参数;
Submarine Vibration Signal Blind Separation Technology Based on Maximal Signal Noise Ratio 基于最大信噪比的潜艇振动信号盲分离算法
Based on the channel and detector characteristics of a submarine laser communication system, the output equation for the signal to noise ratio is derived and simplified. 根据激光对潜通信系统的信道特性和探测器特性,推导并简化了输出信噪比公式。
Increase the image noise, and1 to4 layers of wavelet decomposition denoising, signal to noise ratio is given chart. 对图像加噪,并进行小波1到4层分解去噪,给出信噪比走势图。
The objective digital film image quality assessment based on peak signal to noise ratio, together with structural similarity and human vision system is proposed. 提出了以峰值信噪比为基础,结合结构相似度和基于人眼视觉系统的数字电影图像质量客观评价方法。
Error Performance Testing Analysis Under Different Overload Noise Ratio 不同载噪比条件下误码性能测试分析
The requirements for external vibration is put forward by means of signal to noise ratio of dynamic balance measuring system. 根据动平衡测试系统信噪比对外界振动提出了要求。
The Test of Signal to Noise Ratio and the Simultaneous Test for Parameters of Normal Population 正态总体信噪比检验和参数的同时检验
The effects of the stability of dye laser on the signal to noise ratio in degenerate four-wave mixing ( DFWM) were first investigated in iodine vapor using forward geometries. 在碘蒸气中研究了染料激光稳定性对简并四波混频(DFWM)信噪比的影响。
The result verifies that the high order approximation method offers better denoising effect and higher signal to noise ratio. 结果证明,相对于其他方法,高次逼近法去噪效果良好,得到的信噪比更高。
Technological parameters design based on signal noise ratio and norm gray relational degree 基于信噪比与范数灰关联度的工艺参数设计
Simulation results indicate the vality of the method under the circumstance of low signal noise ratio. 仿真结果表明在信噪比较小的情况下,该方法仍可得到满意的检测结果。
The application effect of the hyperspectral imaging system heavily relies on the signal to noise ratio. 高光谱成像系统的应用效果非常依赖仪器获取图像的信噪比。
A time-domain average method treating the case of lower signal to noise ratio for modal parameter identification 低信噪比情况下识别模态参数的时域平均方法
The electronic processing has been carefully adjusted to provide more gain combined with a much improved signal to noise ratio. 我们对电子处理单元作了认真的调整,以提供更多的增益,并可大大改善信噪比。
And the signal to noise ratio ( SNR) is increased with a phase shifter introduced. 通过引入移相电路提高了系统的信噪比。
Instantaneous frequency estimation of frequency modulation signals in low signal noise ratio 低信噪比情况下调频信号的瞬时频率估计
The simulation analysis shows that the new algorithm can effectively improve the peak signal to noise ratio of the image, and the denoising effect is more satisfactory than other methods. 通过仿真分析,新算法对于细节丰富的图像以及高密度噪声的图像滤波效果良好,有效地提高了图像的峰值信噪比,去噪效果相比其他方法更加优秀。
How do we maximize signal to noise ratio in general of course? 我们如何最大限度地提高信噪比一般的课程?
Combining the concentration modulation spectroscopy with velocity modulation spectroscopy, the dependence of the signal to noise ratio on the modulation depth and various other factors are obtained. 将浓度调制光谱与速度调制光谱相结合得到了速度调制光谱调制度与各因素的关系。
Detection Limit: The minimum signal to noise ratio ( SNR) required for the central pixel. 探测范围:亮度中心的信噪比。
QPSK modulation mode of Hamming encoding different signal to noise ratio in the quality of communication. 分析QPSK调制方式下Hamming编码方式在不同信噪比下的通信质量。