boost

program for gmm distribution calculation of speech features

贝叶斯原理实现一个关于气温测试的例子，使用matlab.(Bayesian principles to achieve a temperature of the test examples, the use of Matlab.)

很实用的教程，和大家一起分享，内含多所高校数学建模培训内容(Very useful tutorial to share with everyone, many colleges and universities included mathematical modeling training)

介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与 理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据。 (The introduction was done with the principle of the QPSK modulation and demodulation in digital communications，a script was written by using Matlab program to CalTy out a simulation of the QPSK communication system．which contains the concrete realization of transmit and receive process．The time-domain diagram is drew separately when the signal transmits in the ideal channel and in the channel with noise，spectral analysis of each module is also done，the results obtained with theoretical results in the main，which provides an effective frame of reference for understanding the performance of QPSK systems，and the practical application in the system to make further designed．)

说明：  计算海洋混合层和障碍层深度并通过M_Map工具包画出全球海洋MLD和BL的分布图(It is quasi homogeneous layer in the upper ocean where variation of density is negligible.)

vectorcontrol2. sim . mnbv vcxcfg

将数据从hfss中导出成txt文档，然后利用matlab引入数据，对数据进行处理。(Hfss export data from a txt file, and then use matlab introduction of data, for data processing.)

有详细说明，方便新手学习，本程序为计算光子晶体的透过率，反射，和吸收(Detailed instructions to facilitate novice learning)

Direct sequence spread spectrum (DSSS) communication systems has been widely used in these years for its advantage of wide spectrum, low working Signal-to-Noise ratio (SNR), anti-interference, anti-multipath effect and capability of LPI and LPD. They are increasingly replacing conventional communication forms and obtaining extensively applications in modern military and commercial communication systems, for example, CDMA communication system, GPS , measuring and control system, satellite chain, identification of friend or foe and etc. Therefore, corresponding DSSS electronic counter technique becomes a big problem to solve in electronic warfare domain. DSSS electronic counter technique including blind detection, blind parameter estimation and spreading sequences estimation. For the issue of DSSS electronic counter technique of DSSS/QPSK signal damaged by strong additive white Gaussian noise (AWGN), the main research content in this dissertation as follow.

运用tls-esprit方法估计信号简谐波频率(Estimation the frequencies ofsignal using total least square-esprit algorithm)