gatbx

CDMA coding and decoding mechanism

现需要在高度为600~700KM范围内，回归周期为30天的太阳同步轨道上布置一颗L波段的合成孔径雷达卫星。 1. 请设计合适的轨道参数，并仿真对应轨道下一个运行周期内星下点轨迹图（纬度和经度两个图）； 2. 计算多普勒中心频率，多普勒调频率与纬度的关系图（设姿态角为0°，天线视角20°~60°，推荐35°）； 3. 按高斯投影方式，将星下点轨迹图投影到地图坐标上。(Now requires a height of 600 ~ 700KM range, return period of 30 days are arranged on a sun-synchronous orbit L-band Synthetic Aperture Radar satellites. 1 Please design the appropriate orbital parameters and simulate the corresponding orbit within the next operating cycle nadir trajectories (latitude and longitude two graphs) 2. Calculate the Doppler center frequency, Doppler frequency and the relationship between latitude Figure (set attitude angle is 0, the antenna angle of 20 to 60, recommended 35) 3 Press Gauss projection, the nadir trajectories projected onto the map coordinates.)

产生两不迥频率的信号，并对两信号作复数FFT变换，找出频率为50Hz的信号对其进行能量计算(Two distant signal is not generated frequency, and two signals for complex FFT transform to identify the frequency of 50Hz signal to calculate its energy)

用改进SVM实现人脸特征提取和识别，用matlab编写，和结果分析(A matlab code of enhanced SVM for face recognition)

说明：  峰值搜索的算法,可对法来波方向进行估计中的谱峰提取的一种方法(Peak search algorithm, the direction of the method to estimate the wave spectrum peak extraction method)

《MATLAB R2008控制系统动态仿真实例教程》一书中的所以源代码(《MATLAB R2008 dynamic simulation in a control system tutorial examples》source code)

matlab程序提取语音信号的基音频率、共振峰、能量、MFCC等特征参数。(The matlab program to extract the speech signal fundamental frequency, Gong Zhenfeng, energy, MFCC and other characteristic parameters.)

MatLab function for converting Rotation matrix to Euler Angles and quatenrions. Two examples provided

this book very important excellent

用于实现K-means算法以至于解决这类问题(hello,we can realize the problem)