针对数字信号通过基带系统远程传输问题, 分析了对信号进行编码和频谱变换的原理。在系统结构设计的基础上, 重点介绍了采用FPGA 编程实现基带信号编码、频谱变换、位定时提取的过程, 给出了关键环节的仿真波形。利用伪码对实际系统进行了测试, 证明能可靠地完成基带信号的传输。-For digital signal through the base-band system long-distance transmission problem, analysis of the signal coding

andorid源代码结构分析详解 源代码内部文件分析-the Andorid source code Detailed structural analysis within the source code file

主成分分析与线性结构分析相结合，比较两种方法的优缺点以和怎么运用，以及在纹理识别方面的重要作用！-Principal component analysis and linear structural analysis combining strengths and weaknesses and how to use comparison of the two methods, as well as an important role in terms of texture recognition