couplehelper

最大类间方差法求阈值(thanks)

A hex file extremely useful for all

说明：  使用libsvm进行三分类，svm多分类可以类似编程(Use libsvm for three categories, svm classification can be more similar to programming)

差分幅度相移键控调制解调系统仿真Differential amplitude and phase shift keying modulation and demodulation system simulation(Differential amplitude and phase shift keying modulation and demodulation system simulation the Differential amplitude and phase the shift keying modulation and demodulation system simulation)

基于兴趣点颜色及纹理特征的图像检索算法，通过同类比较，平均检索准确率提高11个百分点。(Based on the interest points and texture features of color image retrieval algorithm, through a similar comparison, the average retrieval accuracy rate of 11 percent improve.)

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通过M atlab 模拟了随机产生的一定概率分布的信号序列, 叠加高斯噪声后利用最大后验概率(MAP)检 测到的误码率, 做出BER~ SNR曲线, 并与理论计算得到的曲线进行比较, 两者吻合.(M atlab simulated by a certain probability distribution of random signal sequence, use of superposition of Gaussian noise is the maximum a posteriori (MAP) detection to the error rate, making BER ~ SNR curves obtained with the theoretical curve of the combined fit.)

说明：  这是一个有关频谱分析的程序，可实时的画出任意信号的频谱，通过测试程序无误，欢迎下载(This is a spectrum analysis procedure can draw an arbitrary signal in real-time spectrum, through the test procedure correctly, please download the)

bom provide the orginal details before calculation

在matlab软件中将GPS时间转换成周和周秒(Convert Gps Time)