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直接序列扩频系统（DS，Direct Sequence）又称为直接序列调制系统或伪噪声系统（PN 系统），简称为直扩系统，是目前应用较为广泛的一种扩展频谱系统。要传送的信息经伪随机序列编码后对载波进行调制。在发信端越冬用扩频序列去扩展信号的频谱，在收信端，用相同的扩频友序列进行解扩，将展宽的频谱扩展信号还原成原始信号。因为伪随机序列的速率远大于要传送信息的速率，所以受调信号的频谱宽度将远大于要传送信息的频谱宽度，帮称之为扩频(Direct sequence spread spectrum (DS, Direct Sequence) modulation system, also known as direct sequence or pseudo-noise system (PN system), referred to as direct expansion systems, is currently the more widely used as a spread spectrum system. To send the information encoded by the pseudo-random sequence of carrier modulation. End of winter in the letter to extend the signal with the spreading sequence of spectrum, in the end prepared to receive and use the same sequence spread spectrum despreading friends, broadening the spectrum to restore the original signal expansion signals. Because the rate of pseudo-random sequence is much larger than the rate of information to be sent, so the frequency spectrum by adjusting the width of the spectrum is much larger than the width of the information to be sent to help is called spread spectrum)

利用FDD进行模态分析 得到输入激励的后的频率(FDD modal iditification)

实现了小小去噪，与其他去噪方法相比取得了良好的效果(denoising based on wavelet)

实现matlab gui 界面的人脸检测代码，界面的调用以及设计方法(Achieve matlab gui interface face detection code, interface design method calls and)

matlab计算声子晶体频响函数源代码，附计算数据案例(The matlab calculation of phononic crystal frequency response function source code, with the calculated data case)

用牛顿法计算简单电力系统潮流，可以计算任意节点的潮流。自动输出中间的相关结果，并且有清晰可以操作的界面(Newton s method with a simple power flow)

This is RRR Kinematic Control robot in MATLAB

特别好用的二值化程序 比matlab自带的好 因为是分区域二值化 不需要事先设定阈值 而是自动计算阈值，对您的实验会有帮助的(very useful)

利用ar建模 计算ar参数的阶数和ar参数的系数 可以对语音建模(ar modeling)

模拟退火算法简介及解决实际问题的代码Matlab程序(Introduction and simulated annealing algorithm to solve practical problems Matlab program code)