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- 我们知道，图像压缩就是要寻找高压缩比、并使压缩后的图像有合适的信噪比的方法，对压缩后的图像还要能实现低失真度地恢复图像。压缩性能的评价标准之一是图像能量损失和零系数成分值。能量损失越小，零系数成分值越大，图像压缩的性能就越高。 -We know that image compression is to find a high compression ratio, and the compressed image signal to noise ratio suitable metho
wuxianchui
- 无线词汇解释1. 香农定理 类比：城市道路上的汽车的车速和什么有关系？和道路的宽度有关系，和自己车的动力有关系，也其他干扰因素有关系（如：车量的多少和红灯的数量）。 香农定理是所有通信制式最基本的原理。 C=Blog2(1＋S/N)： 其中C是可得到的链路速度，B是链路的带宽，S是平均信号功率,N是平均噪声功率，S/N即信噪比。香农定理给出了链 -Wireless glossary 1. Shannon theorem analogy: City of the speed of ve
Penjelasan-Cophasing
- cophasing maximum ratio combining mrc
Measurement-and-study
- 面平均雨量是流域水情预报和水资源分析的重要因子。为此,以贝江流域为例,介绍子流域面积权重计算面平均雨量的方法-Donghai waterway is the river course connecting Xijiang river to Beijiang river. The flow distribution ratio be2 tween Xijiang river and Donghai waterway is the key factor directly influence th
Vital-sign-detection-method
- 基于高阶累积量的生命微动信号检测方法的研究成果，发表在IEEE Transaction Geoscience and Remote Sensing 期刊上-The research on vital information extraction meets a lot challenges due to the narrow bandwidth and low signal-to-noise ratio of a vital sign in real environment. In th
JIExianfenxi
- 电能计量装置正确接线是保证计量准确的前提，因为电能表、电压互感器（PT）、电流互感器（CT）的误差很小，而错接线造成的误差却可达到无穷大（错接线时的停走现象），真可谓一线之差，电量千万，所以在投运前或运行中应定期进行接线检查。接线检查可分两种情况：停电检查、带电检查。停电检查必较简单，它一般是对于新装或更换PT、CT以及其它计量装置投运前进行检查，主要内容是检查PT、CT的极性、变比及二次接线的核对工作-Correct wiring of the power measurement device
sn75176bdatasheet
- 一款用于电源的芯片，上传了，他可以控制电源的电压变化，方便管理电源的电压比-A chip for power, upload, and he can control the power supply voltage changes, to facilitate the management of the power supply voltage ratio
SNR
- 文档为信噪比的定义，包括平均功率信噪比、瞬时功率(或电压)信噪比和偏移信噪比，并给出详细的定义公式-The definition of the documentation for the signal-to-noise ratio, signal-to-noise ratio of the average power signal-to-noise ratio and offset signal-to-noise ratio of the instantaneous power (or volt
cours-electronique-analogique-ch-2-AO
- I examined the influence of a number of design parameters. Flow distribution will influence PV yield. Increasing the aspect ratio of the collector will improve flow uniformity and PV outpu-I examined the influence of a number of design parameters. Fl
3
- Abstract-The mobile radio channel can be simulated as a complex-valued random process with a time-varying variance. This paper describes an implementation of that process using a real-time Digital Signal Processing (DSP) technique. The simulato
noise
- 图像去噪理论基础图像视频去噪的最终目的是改善给定的图像，解决实际图像由于噪声干扰而导致图像质量下降的问题。通过去噪技术可以有效地提高图像质量，增大信噪比，更好的体现原来图像所携带的信息，作为一种重要的预处理手段，人们对图像去噪算法进行了广泛的研究。在现有的去噪算法中，有的去噪算法在低维信号图像处理中取得较好的效果，却不适用于高维信号图像处理；或者去噪效果较好，却丢失部分图像边缘信息，或者致力于研究检测图像边缘信息，保留图像细节。-Image denoising theory based imag
SEM-REP-ORG
- Applications of Computer graphics, especially digital photographs and other complex color images,can produce very large file sizes. Problems of storage space and the necessity to fast transmit image data across networks and over the Internet, have th
INDUJA_BODY
- Applications of Computer graphics, especially digital photographs and other complex color images,can produce very large file sizes. Problems of storage space and the necessity to fast transmit image data across networks and over the Internet, have th
Desktop
- 平常所用的扑克牌游戏，出牌最后是否是21点，如果比21点大则就输了-Usually used in poker games, the cards finally whether it is 21:00, if the ratio of 21:00 for big lose
05386026
- In a series of papers in recent years new structures for coherent M-PSK (M-ary Phase Shift Keying) receivers were suggested. These include structures for carrier phase detectors for the carrier PLL (Phase Lock Loop), carrier PLL lock dete
FACE-RECOGIZE
- 这里通过对人脸图像打上网格，对区域块图像做二值分析，通过像素比例来 做处理。进而得到人脸区域。-Here to play through the grid on the face image of the area to do a binary block image analysis, done by pixel ratio processing. Then get the face region.
xiaobobaoyuzhijiangzao
- ：提出一种基于对偶树复小波块阈值的信号降噪方法，并将其成功应用于机械故障诊断中。机械设备的振动信号都或多或少地含有噪声，导致弱故障信息的提取一直是故障诊断的难点和热点。提出的降噪方法充分利用对偶树复小波变换的平移不变性和块阈值法的更优估计特性，可以获得比常规的小波降噪方法以及基于常规离散正交小波变换的 NeighBlock 降噪法更高的信噪比， 不仅能有效抑制高斯白噪声， 还能够去除冲击信号中的脉冲噪声。-：A denoising method of block thresholding bas
untitled
- In order to reduce the volume and cost of the Z-source network, we need to eliminate the low-frequency current ripple by using a constant shoot-through duty ratio
MPPT-fakhte-amir
- It can be easily seen the above analysis that the shootthrough duty ratio is always constant. This can be reconfirmed a different perspective below-It can be easily seen the above analysis that the shootthrough duty ratio is always constant.
MIMORFID
- UHF MIMO-RFID在Nakagami衰落信道下的性能分析-the reverse-link interrogation range (RIR) of ultrahigh-frequency-band passive radio-frequency identification (RFID) is analyzed for single-input and single-output (SISO) and multiple-input and multiple-output (