SQP

计算兄弟数，平时练习题，算法比较笨，欢迎指教(Calculate the number of brothers, usually exercises, algorithm is stupid, please advise)

This application solves the Euler incoming supersonic flow around a cylinder by a finite volume method. It was developed at Massachusetts Institue of Technology.

programas comunicaciones digitals

apm开源飞控，供无人机飞行器的爱好者研究(APM source control, for lovers of unmanned aircraft )

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

全相位matlab 算法 ，希望对大家有一定的帮助，，欢迎参考(All phase Matlab algorithm, we hope to have some help, and welcome reference)

四轴飞行器制作总结，包括四轴制作过程中马达、电调的选择，以及相关代码。(Four aircraft production summary, including the motor axis in the production process, the choice of power transfer, and the relevant code.)

基带LFM脉冲压缩，Matlab仿真程序，适用于初学者(Baseband LFM pulse compression, Matlab simulation program for beginners)

说明：  本程序为块匹配算法的快速搜索策略，菱形搜索法，也叫钻石搜索法(This program is fast block-matching algorithm search strategy, diamond search, also called the diamond search method)

此程序提取Gabor小波特征，然后由SVM进行分类的Matlab源代码(The Gabor wavelet feature extraction process, then classified by the SVM in Matlab source code)