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北斗系统空间信号接口控制文件正式版。北斗系统基本服务性能如下：位置精度：平面 10米、高程10米；测速精度每秒0.2米；授时精度单向50纳秒；可提供双向高精度授时和短报文通信服务。通过广域差分和地基增强等手段，北斗系统服务 性能还可进一步提高，满足各类用户需求。(Official version of the the Beidou system space signal Interface Control Document. The Beidou system performance are as follows: position accuracy: plane 10 meters, 10 m elevation velocity accuracy of 0.2 meters per second timing accuracy of the one-way 50 nanoseconds provide two-way high-precision timing and short message communication service. By means of wide area differential and ground-based augmentation Beidou system performance can be further improved to meet the needs of all types of users.)

this paper talks about ofdm synchronization for selective fading channels,hope it to be of help to evrybody

主要讲解html和css 希望可以帮到正在学习的同学-Html and css key to explain the desire to help students who are learning

内含文件：音频文件WAV特技播放的原理及实现,PDF格式-containing documents : WAV audio files stunt shows, the theory and implementation, PDF format

program to display bmp image in linux c..this program works without using VGA header-program to display bmp image in linux c..this program works without using VGA header..

一个特别不错的海德汉编程技巧资料(HEIDENHAIN programming skills)

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Contrairement au filtrage par convolution (filtrage linéaire), le filtrage non-linéaire fait intervenir les pixels voisins suivant une loi non-linéaire. Le filtre médian (cas particulier du filtrage d’ordre), utilisé dans cet exercice, est un exemple classique de ces filtres. à l’instar du filtrage par convolution, les filtres non-linéaires opèrent sur un voisinage donné.

也业是关于驱动开发的方面得到。像好好正席看看，谢谢大家的使用-Industry is also on the aspects of driver development. I look at is as well, thank you for the use of

这些都是关于sobel算法的一些文章，比较先进，希望能为图像处理的朋友带来方便。-These are the sobel algorithm on a number of articles, more advanced image processing is hoped that the convenience of friends.