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generate the parity check matrix

its about quaternion formation

测距仪测距的过程中，由于受到仪器本身的系统误差以及外界环境影响，会造成测距精度的下降。为了提高测距的精度，我们需要对测距的结果进行改正，可以分为三种类型的改正：仪器常数的改正、气象改正和倾斜改正。(Rangefinder ranging process, due to systematic errors in the instrument itself and the external influences, ranging accuracy will result in a decline. In order to improve ranging accuracy, we need to correct the results of the distance, can be divided into three types of corrections: the correction instrument constant, meteorological correction and inclination correction.)

this is solar cell matlab prog

image processing using matlab book

Frequency analysis using mordern methods

用matlab的编程实现一首歌曲的播放。歌曲是用代码编辑的，运行后就能实现播放。(Realization of a song to play using matlab programming. The song is in code editor, can be achieved after playing running.)

介绍LIBSVM的函数，主要是FRUTO的改进版本的LIBSVM(introduce libsvm function)

刘金坤《先进 PID 控制及其 MATLAB 仿真》书上第一章源程序。供大家参考。(Liu Jinkun " Advanced PID Control and MATLAB simulation," the book' s first chapter source,)

利用simulink简历模块图进行机器人的单关节动力学仿真，rar内含说明文档1份，simulink模块图2份（内容一样，其一适于6.5以下版本，另一适于7.0以上版本），简单易懂。(use Simulink curriculum vitae module chart single-joint robot dynamics simulation. rar file a note containing copies Simulink map module 2 (content, One suitable for the following version 6.5, 7.0 more suitable for another version), the simple and understandable.)