gps-satellite-position-calculation-

IEEE 39 BUE TEST SYSTEM,可用于潮流计算(IEEE 39 BUE TEST SYSTEM)

fcm是模糊c均值聚类算法，确定聚类中心以后，通过循环迭代，确定最佳聚类中心(FCM is a fuzzy c means clustering algorithm to determine the cluster center, the adoption cycle of iteration, to determine the optimal cluster center)

用卡尔曼滤波方法预测目标轨迹，能够估计目标下一时刻的位置信息(Prediction of Target Trajectory by Kalman Filter)

这是一个costas实现的QPSK解调器，这个解调器可以实现一个QPSK调制信号的解调！(it is about a demodulator for QPSK！)

说明：  MATLAB GUI上位机，WiFI通信，连接稳定，可同时采集四个通道的数据，互不干扰(Matlab GUI upper computer, WiFi communication, stable connection, can collect data of four channels at the same time, without mutual interference)

简单的MIMO模拟 假定QPSK，ML解码（SM ZF检测器除外）。 mrc.m - 最大比例组合 stc.m - 具有1和2个接收天线的Alamouti空时分组码 bf.m - 特征波束形成 sm.m - 空间复用2x2（ML解码和次优逼迫） 简单的OFDM仿真 模拟保护带，用于信道估计的循环前缀前导码符号(Simple MIMO simulations Assumes QPSK, ML decoding (except SM ZF detector). mrc.m - maximal ratio combining stc.m - Alamouti space-time block code with 1 and 2 receive antennas bf.m - Eigen-beamforming sm.m - Spatial multiplexing 2x2 (both ML decoding and suboptimal zero forcing) Simple OFDM simulation Simulates guard band, cylic prefix Preamble symbol used for channel estimation)

高斯一阶导数生成的UWB单脉冲信号，脉冲宽度为0.5ns(Gaussian first derivative monopulse generated UWB signal, pulse width of 0.5ns)

DS-CDMA链路中加入基于子空间的PASTd多用户检测方法。系统中采用m序列阔频，可以通过高斯信道或瑞利信道。可以直接运行得到不同信噪比下的误码率曲线。(DS-CDMA link added Subspace-based multiuser detector PASTd. M sequence used in the system wide-band, Gaussian channel, or by Rayleigh channel. Get different signal to noise ratio can be run directly under the BER curves.)

说明：  一般时与儒略时以及GPS周、秒的相互转换(Conversion between general time and Julian time and GPS cycles and seconds)

是信号处理方面欠采样的源程序 ,是很不错的程序,可以这方面的学者一些参考价值(signal processing is owed sampling of the source, is a very good procedure, which some scholars regard the reference value)