SNr相关论文
水面高度的变化对气候、环境以及人类的生存有着巨大的影响。在全球气候变暖的大背景下,海洋潮位和内陆水库水面高度呈现上升的趋......
提出一种面向通信系统的误码率计算方法，首先介绍无线电通信视距传播距离的计算模型，通过提出的接收机输出信号的解调信噪比计算模型......
为了解决基于单天线全球导航卫星系统反射遥感测量技术(global navigation satellite system,GNSS-R)的土壤湿度测量中使用单一植......
目的 评估应用双层探测器光谱CT所行的CTPA在常规120kVp及不同等级单能量图像的客观图像质量,探究CTPA图像不同等级VMI图像客观指......
针对传统的GNSS-IR海面高度监测方法信号分离不佳且精度有待提高的问题,提出结合小波变换和改进Burg算法的新型GNSS-IR海面高度反......
The monitoring of sea level change is a hot issue in the field of marine environment and global climate change research.......
This Soil moisture is an important part of the surface water cycle. Effective monitoring of soil moisture is of great si......
Snowfall is an important freshwater resource; manual monitoring and laser detection can monitor snow to a certain extent......
Snowfall as an important global freshwater resource,especially for Xinjiang Altai region in the snow all the year round,......
As a new remote sensing method,GPS-MR technology is gradually used for surface environmental monitoring.In this paper,th......
小波阈值去噪是信号处理中的一种重要去噪方法,本文针对信号在获取和传输的过程中容易受到噪声干扰的问题,结合软、硬阈值函数的特......
Satellite elevation angle and Signal-to-Noise Ratio(SNR) are usually used as measurement quality indicators for global n......
A new method for optimizing the 5×5 hitless silicon based optical router for optical networks-on-chi
Crosstalk noise is an intrinsic characteristic ofphotonic devices used by optical router which is used in optical networ......
会议
本文基于Rician衰落信道模型和Turbo编译码技术,详细研究了Turbo码Log-MAP译码算法和SOVA译码算法在低Rician因子衰落信道和Raylei......
The purpose of this study was to develop a solenoid coil for use with rat brain and peanuts in a 9.4 Tesla MRI system an......
Brachial plexus MR imaging using contrast-enhanced STIR 3D FSE:evaluation of four different delay ti
Purpose To investigate the performance and determine an optimal scan time for contrast enhanced STIR 3D FSE in periphera......
目的:To compare the CT value and SNR between virtual non-enhanced(VNE)and true non-enhanced(TNE)from dual-energy compute......
目的 探究不同b值和同一样本扩散张量图像质量、弥散参数的定量关系。方法 采用100、500、1000、2000、3000s/mm2 5个b值对ACR标准......
Purpose To investigate the difference of these three sequences which are widely used on knees,including Sag PDWI fs(fats......
Purpose To compare and evaluate the image quality of different sequences for lung MRI.Methods This study included 15 pat......
目的 通过对比1.5T场强下磁共振不同序列显示肺部结节与肿块的图像质量，评价目前用于腹部和心脏大血管的脉冲序列用于肺部疾病的显......
目的 探讨矢状位质子压脂,T1与三维(three-dimensional,D)多回波回复梯度回波(Multi-echorecalledgradientecho,MERGE)序列在膝关......
Low-light camera is an indispensable component in various fluorescence microscopy techniques. However, choosing an appro......
针对相位敏感光时域反射仪(Φ-OTDR)信号信噪比较低的问题, 提出了一种基于自适应噪声完备经验模态分解(CEEMDAN)的小波信息熵阈值......
Shift Endpoint Trace Selection Algorithm and Wavelet Analysis to Detect the Endpoint Using Optical E
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本文通过讨论探测器的信噪比和噪声等效功率的影响因素,研究了CO2激光外差探测系统的灵敏度.......
针对大视场TDI CCD拼接相机焦平面存在各通道之间性能的差异性较大，导致多通道拼接好的图像存在明显的亮暗差别等问题，提出一种可靠......
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对于全球高纬度地区而言,积雪不仅作为一种关键的淡水存储方式,也是全球气候系统的重要组成部分。随着GNSS反射理论(Global Naviga......
本文基于分簇递归算法的低压电力线物理拓扑识别的方法,应用于载波通信技术的低压电力线用电信息采集系统,基于现有的载波通信技术......
Water vapor is essential for the formation of clouds and rainfall,and plays an important role in the radiative budge......
Snow cover plays an important role in global climate regulation and hydrological cycle. However, conventional detect......
通过结合目标红外特征,研究了空-空导弹在复杂背景条件下的目标红外成像末制导技术原理和实施途径.对复杂地背景的辐射特征作了分......
In a digital radiography system,the detector is a very important part.This paper uses domestic flat-panel detector 0......
以图像中的噪声影响下一步图像处理、分析及识别为启示,分析了常用的数字滤波算法优缺点,提出了基于MATLAB的灰度邻域操作消噪方法......
在单个分子的成像的 SNR (到噪音比率的信号) 的改进为改进图象分辨率并且在更高的精确水平区分单个分子的好结构是显著地重要的。......
Multidimensional reconciliation protocol for continuous-variable quantum key agreement with polar co
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惊厥是儿科常见的急重症,发生率高达4%,反复的惊厥性损伤不但影响患儿的智力发育,而且严重惊厥可引起永久性脑损伤,留有后遗症,给......
本文介绍了用于最大信噪比（ＳＮＲ）有限脉冲响应（ＦＩＲ）数字滤波器设计的梯度算法。我们注意到，对特征值梯度的确定并不能从任何起始点得出总体最大......
提出了正交频分多址(OFDMA)上行链路中基于信噪比最优顺序的快速串行干扰消除方法.该方法利用干扰矩阵的各列近似正交特性,按照它......
OFDM是一种高频带利用率的多载波调制技术，它在提高频带利用率的同时，也能有效地抵抗字符间干扰。而同步技术是OFDM系统实现的关键技......
针对高频肌电噪声、低频基线漂移及工频干扰等噪声对心电信号分析诊断的影响问题,本文使用基于自适应噪声的完备集合经验模态分解(......
t检验是检测密码芯片侧信道能量信息泄漏的重要方法。为提升t检验对分组密码安全性的评估能力,从而更好地对密码芯片进行有针对性......
