IS-GPS-800B

Effects of FACTS Devices on a Power System Which Includes a Large Wind Farm

利用c++实现的GPS单点定位程序，并对程序中读取文件部分做了详细注释(GPS single point positioning using c++ achieve)

本程序用于读取GPS中精密星历SP3文件，得到各个卫星的坐标序列(read the sp3 file of GPS)

实现gpgga报文经纬度转换成gps经纬度(Transforming the latitude and longitude of gpgga message into GPS longitude and latitude)

说明：  通过广播星历自动计算某卫星一天内各时刻的位置，并和同目录精密星历比对精度。注释很多。(The position of each time in a day is calculated automatically by broadcast ephemeris, and the accuracy is compared with that of precise ephemeris in the same catalog. There are many comments.)

GPS 捕获跟踪程序，用的是PMF-FFT捕获方法。门限设置为0(GPS capture and tracking procedures, using the PMF-FFT capture method. Threshold set to 0)

RTCM协议说明文档，介绍RTCM协议详细内容，帧结构。(rtcm frame )

In this paper, we present and analyze efficient frame synchronization and frequency offset compensation scheme with ternary sequences for an orthogonal frequency division multiplexing (OFDM) system in Rayleigh fading channels. Frame synchronization is an essential procedure for normal operation of the OFDM system because of sensitivity to synchronization errors. And when there are frequency offsets in OFDM frame, the loss of orthogonality occurs and the interference problem among several subcarriers is introduced. These fact leads to the requirement for joint implementation of the frame synchronization and frequency offset compensation.

GPS网平差计算核心代码，Trimble(GPS network adjustment calculation core code, Trimble)

重点研究了全数字QAM接收机中的两个关键技术——符号同步和信道盲均衡。研究Gardner定时误差检测算法，盲均衡方面，重点研究了CMA及其改进算法，采用MMA算法和DD-LMS算法联合均衡 (Focuses on the all-digital QAM receiver in the two key technologies- the symbol synchronization and channel blind equalization. Research Gardner timing error detection algorithm, blind equalization, the focus of the CMA and its improved algorithm, using the MMA algorithm and the DD-LMS algorithm for joint equalization)