《射频电路设计——理论与应用》一书课后习题第九章Matlab程序代码-RF_ch09

说明：  从地理坐标到笛卡尔直角坐标转换,考虑到不同的椭球投影。(function to calculate the geodetic Earth-fixed coordinates )

光纤的matlab仿真代码， 光纤通信，有常用参数(fiber simulation)

小波包分析提取振动信号中的特征频率，二维声子晶体FDTD方法计算禁带宽度的例子,采用的是通用的平面波展开法。( Wavelet packet analysis to extract vibration signal characteristic frequency, Dimensional phononic crystals FDTD method calculation examples band gap, Using common plane wave expansion method.)

说明：  在OFDM系统中64QAM的调制和解调，总共包含四个程序。(In OFDM systems 64QAM modulation and demodulation)

直接将秘密图像的高4bit隐藏在RGB载体图像的R,G,B层中所选的那一层的低4bit,并将秘密图像提取出来，最后显示。要求载体图像的大小大于等于秘密图像的大小，且秘密图像是二值或灰度图像(Directly to the secret image hidden in the high-4bit RGB vector images R, G, B layer, then a layer of selected low 4bit, and extracted secret image, the final show. Required size of the image carrier is greater than equal to the size of the secret image, and the secret image is a binary or gray image)

a cluster method based on density

说明：  DOA中的经典，music算法，还有说明，亲测很好用，分享给大家(music DOA in the classic, music algorithm, there are instructions, pro test is very easy to use, share with you)

运用群操作进行多用户检测，matlab程序(The use of group operation multi-user detection, matlab program)

说明：  ce code est écrit en matlab

用于识别目标轨迹的算法，没有解压密码，可以直接使用(trajectory for target identification algorithm, without extracting passwords can be used directly)