ex3data

用fft算法求信号函数的相位或相位差，发现一些规律，对正弦、余弦函数而言，所得结果，有差异( a simulationg of using fft algorithm measuring phase and some problems)

程序是对输入的语音信号添加已知信噪比的噪声，输入是纯净的语音信号和信噪比，输出是加噪后的语音信号。后半部分是验证前面所加信噪比是否正确的程序(Procedure is to add the input speech signal noise ratio of the noise is known, the input speech signal and pure noise ratio, after output speech signal plus noise. Latter is to verify whether the previously added the correct procedure SNR)

ofdm系统的simulink仿真 绝对可用(the ofdm system of simulink simulation is absolutely available)

本人做的产生GPS32颗星的CA码,共包含2个文件,gps_ca_code.m用于产生任一颗星的CA码. Gen32CACode.m用于产生32颗星的CA码(I do have GPS32 stars of the CA code were included in two documents, gps_ca_code.m used to produce a Star of the CA code. Gen32CACode.m use produced in the 32-CA code)

说明：  1、根据所给的中国版图数据 绘制显示基于北京54坐标系的经纬度数据 编写兰勃特投影转换程序，转换上述数据，并显示 编写墨卡托投影转换程序，转换上述数据，并显示 同时，要绘制相对应的经纬网格，网格间距5度 2、根据所给的世界版图数据 绘制显示基于WGS84坐标系的经纬度数据 编写墨卡托投影转换程序，转换上述数据，并显示 计算北京(116.4，39.8)到巴黎(2.2, 48.52)的大圆轨迹，并显示 同时，要绘制相对应的经纬网格，网格间距5度(1. According to the data of China territory Plot shows latitude and longitude data based on Beijing 54 coordinate system Compile lambert projection conversion program, convert the above data, and display Prepare Mercator projection conversion program, convert the above data, and display At the same time, to draw the corresponding longitude and latitude grid, grid spacing 5 degrees 2. According to the world map data given Draw and display longitude and latitude data based on WGS84 coordinate system Prepare Mercator projection conversion program, convert the above data, and display The great circle trajectory from Beijing (116.4, 39.8) to Paris (2.2, 48.52) is calculated and shown At the same time, to draw the corresponding longitude and latitude grid, grid spacing 5 degrees)

为了对空间辐射源进行精确定位" 建立了基于任意阵列对多目标源进行二维DOA估计的数学模型。将 MUSIC算法推广到三维空间阵列可以对辐射源进行二维高精度测向,但由于其需要估计接收数据的协方差矩阵和进行特征分解, 因而其计算量较大。利用多级维纳滤波器的前向递推获得信号子空间和噪声子空间，不需要估计协方差矩阵和对其进行特征分解，从而降低了MUSIC算法的计算量。将文中的方法应用于任意阵列的二维DOA估计中进行计算机仿真和实际侧向系统性能验证,实验结果均表明该方法达到了MUSIC算法的性能,但与常规MUSIC算法相比降低了计算量.( In order to space radiation source for precise positioning" based on arbitrary array to multiple target source 2D DOA estimation model. The MUSIC algorithm is extended to three-dimensional space to two-dimensional array of radiation source for high precision direction finding, but due to the need to estimate the covariance matrix and eigenvalue decomposition, and the large amount of calculation. Use of multistage Wiener filter forward recursion received signal and noise subspace, does not need to estimate the covariance matrix and the eigenvalue decomposition, which reduces the computation of MUSIC algorithm. This method is applied to an arbitrary array DOA estimation for computer simulation and actual lateral system performance verification, the experimental results show that this method achieves the performance of MUSIC algorithm, but with the conventional MUSIC algorithm reduces the calculation amount.)

说明：  主要是ArcGIS API 加载WMTS服务的服务，加载天地图服务地址(ArcGIS API for JS Load WMTS Service)

GPS 差分定位 单差和双差定位 0基线 cep95一米以内(GPS differential positioning)

DOA信源数估计，采用MDL算法，可以有效估计信源数目。(DOA source number estimation using MDL algorithm)

具体介绍了但交叉口多交叉口的控制方式，采用vissim仿真，对于新手具有借鉴意义(The control strategy model built by SIMULINK can be used for reference by novices.)