program

web版微信协议分析。当前分析到登陆部分。举一反三，后续的拉取好友列表和发送消息等协议都好分析出来了。作者：孙强壮。(The web version of the micro-channel protocol analysis. Current analysis to the landing part. Giving top priority to, the subsequent pull friends list and send messages agreements out a good analysis.)

manual leica geooffice

一份红外通讯的编码设计,已经经过实验，支持一对多。(Encoding of an infrared communication design, and after the experiment, to support one to many.)

Simulation DFB Laser by Burt Lann Espe

在TOA测距的基础上，提出了一种三维无线传感器网络节点定位算法，并对其性能进行了分析，给出了算法的时间同步误差和定位误差。最后在现有仿真平台OMNET++的基础上构建三维仿真模块，对算法进行了仿真实现，给出了该算法的定位精度和覆盖率(This paper proposes one three-dimensional localization algorithm based on TOA distance measurement and analyzed the performance of the algorithm calculated time synchronization error and localization error. Finally it constructed three-dimensional simulation modules based on OMNET++ and implemented the algorithm educed the localization precision and coverage.)

说明：  ：为了论证高斯最小频移键控(GMSK)信号在时域和频域的相互关系，分析了GMSK信 号调制原理和滤波器传递函数，建立了GMSK调制和解调模型。(: In order to demonstrate Gaussian Minimum Shift Keying (GMSK) signal in time domain and frequency domain, the relationship between the analysis of GMSK signal modulation principle and the filter transfer function established model for GMSK modulation and demodulation.)

文章涉及OTDM系统的实现，对研究此方向的同学有一定帮助(OTDM systems involved in the realization of the article, students in this direction of research will definitely help)

说明：  振铃芯片KA2410数据手册(Ringing chip KA2410 Data Sheet)

Underwater optical wireless communication network

Butterworth filter design for digital signal processing