1000-0054(2011)09-1234-05

用FFT计算信号的功率谱密度时，需要先计算FFT，再计算双边谱密度，然后计算单边谱密度。在matlab里注意FFt要除以采样点数，计算双边谱时要注意除以频率分辨率。 ( When calculated using the FFT power spectrum density signal, you need to calculate the FFT, and then calculate the bilateral spectral density, and then calculate the unilateral spectral density. In matlab in Note FFt divided by sampling points should be noted when calculating the bilateral spectrum divided by the frequency resolution.)

基于香浓熵的属性简约，用于属性约简，以便分类(data reduction with fuzzy rough sets or fuzzy mutual information)

source code HMM for matlab

通过matlab模拟的汽车发动机的模型，对于初学者可能有所帮助(Through the matlab simulation of automobile engine model for beginners may help the engine )

求jeffcott转子模型的临界转速的matlab编程(Seeking jeffcott critical speed of the rotor model matlab programming)

一种解决p3p问题的matlab&C代码，计算绝对的姿势[ R ]四解决方案，一个相机三3D到2D的对应使用(Compute the four solutions for the absolute pose [R,C] of a camera using three 3D-to-2D correspondences)

一种带有摄像机抖动的背景建模方法，使用张量分解和仿射变换，需要张量工具箱的支持。(a background estimation method with dynamic change,using tensor factorization and affine transform)

AIS定位、速度、航向数据解析。可以批量解析并保存。(AIS data decoder。)

一个很有用的卫星链路模型。A satellital path(A satellital path)

说明：  完成QPSK的调制和解调 并通过瑞利信道分析误比特性能(QPSK modulation and demodulation completed by analysis of BER performance in Rayleigh Channel)