地震波显示工具

GPS仿真MATLAB软件，可以进行坐标转换，伪距求解，误差分析等(Calc_Azimuth_Elevation；Distance；ECEF2GPS；Error_Ionospheric_Klobuchar；Error_Satellite_Clock_Offset；Error_Tropospheric_Hopfield)

说明：  主成分析在matlab中应用有源程序,关于主要因素的提取(Principal Component Analysis in matlab application has source code, the main factors on the extraction)

we can use goto function in matlab.

基于matlab的OFDM仿真程序； 我再论坛找了很多OFDM的代码和文章,但总有遗患,为什么呢原因是大部分只有简单的映射,IDFTDFT变换等等,但主要的同步和信道估计去没有人提出来,甚至做出来.. 现在我终于找到了一份,它以FUNCTION的形式,再现了OFDM映射,IDFTDFT,同步(时间频率同步)和信道估计,以及频率偏移的估计等一系列代码.(Based on the OFDM matlab simulation program I' ll find a lot of forums and articles OFDM code, but there are left suffering, why because most only simple mapping, IDFTDFT transformation, etc., but the main synchronization and channel estimation to no one proposed, and even do it .. and now I finally found a copy of it in the form FUNCTION, Reproduction of OFDM mapping, IDFTDFT, synchronous (time and frequency synchronization) and channel estimation, and the estimated frequency offset a series of code.)

分数低阶循环谱程序，用于计算循环平稳循环的分数低阶循环谱(Fractional lower order cyclic spectrum program for calculating the fractional lower order cyclic spectrum of the cycle.)

基于深度优先搜索的电力系统分区：根据节点连接关系确定节点的所属分区，即系统最终分成多少个区域、每个区域包含哪些节点。(Power system Partition based on deep search according to connectivity , i.e., determining the number of sections and nodes in each section.)

说明：  通信原理课本中的一些实例代码，方便大家使用(Communication principles in the textbook of some examples of code, easy to use)

由于被动雷达中广泛应用的测角方法应用于宽带信号测向时存在着各种问题，将互谱法应用于被动雷达宽带信号测向。针对互谱法测向中相位模糊与测角精度存在的矛盾，提出用两频率点的频率差和对应的互谱相位差值的关系来解相位模糊的频率-相位差值法，突破了互谱法中阵元间距不大于信号最小波长一半的限制，有效的保证了测角精度。最后对相位差值进行修正，解决相位跳变问题，用两个阵元即可实现宽带信号测向。  

常规波束形成与最小方差法的比较，从而看出两个算法的分辨力高低()

本程序是用matlab编写的瞬时频率估计，供参考学习！(This program is written in matlab instantaneous frequency estimation for information to learn!)