基于JXTA平台的 P2P通信系统

The dynamics of orbit uncertainty in an unstable orbital environment are discussed with specific application to the orbit determination of a halo orbit about the Earth{Sun L1 point. This article documents a simplified orbit determination covariance program developed under Telecommunications and Mission Operations Division Technology support. The program is ideally suited to investigate spacecraft trajectory navigation in challenging environments, where the basic dynamics of the trajectory can no longer be modeled using near-Keplerian motion.

串口的东西,用串口通讯. 用API封装的串口操作类-Serial things, using serial communications. Using API Packaging category Serial operation

基于OpenH323的一个VoIP程序，下载自国外专业网站-based on OpenH323 of a VoIP procedures downloaded from the website abroad

    压缩包有六个文件，分别是绘制圆波导TE波和TM波各模式的横截面场分布、三维静态场分布、三维动态演示。能够绘制的模式有TE波或TM波01-23共2*9种。除截面场分布文件是运行程序后自动生成9种模式分布图外，其余文件是运行后根据提示输入参数（如绘TE11就找到对应的文件，由提示输入1，1即可），参数是模式下标。圆波导模多存在极化兼并，图中可以看出，但是只绘制了余弦情况下对应的场分布（正弦只是旋转了90度）。压缩包里有程序运行的部分结果。时间仓促，结果没来得及仔细核对，有错误希望指出。

几个关于利用傅里叶变换进行谐波分析的代码。有详细的变换过程，比较适合想了解原理的初学者。-Several on the use of Fourier transform for harmonic analysis of the code. The transformation process in detail, more suitable for beginners would like to know the principle.

数据链路层ARQ协议的实现软件编程，网给学习网路编程的朋友有帮助-Data link layer ARQ protocol realize software programming, network programming to the learning network to help a friend has

本程序实现局域网内的文件传输我有关消息的收发。 本程序仅供参考，不能用来当作交差-the procedures within the LAN file transfer me send and receive messages. This program is for reference only and should not be used as a perfunctory

水下扩频系统研究，本系统采用直接扩频序列方式，在有多径水声信道和无多径的水声信道进行研究比较-Underwater spread spectrum system, the system uses direct sequence spread-spectrum approach, in a number of Acoustic Channel Drive and non-multi-path acoustic channel for the study of comparative

通信系统仿真原理与无线应用代码 是一本不可多得的仿真书籍 -Communication System Simulation Principle and wireless application code is a simulation of rare books

Parallel port JTAG programmer source code