fpu

Low pass filter in order to detect edge

说明：  计算二维数据的径向平均功率谱,较好地展现了磁异常的径向变化(calculate the frequency of 2-dimenation data)

这个说明倒不是说明函数的功能，只是声明一下函数中出现的问题。 shortest()函数没有问题，在secshortest中我希望只得到一条次短路（或几条roadcost()值相同的次短路），结果却出来好几条，我仔细检查了一下程序，应该没有什么问题。 因此在使用时，要得到次短路，只能用roadcost()函数分别求一下各条路的权重和，找到最小的。 有些奇怪 (Note that this is not the function of function, but a statement about the problems in function. shortest () function there is no problem, I hope that in secshortest only a short time (or several roadcost () times the value of the same short-circuit), the result is several out, I carefully examined the process, it should be no problem. Therefore, in use, to be at a short circuit can only be used roadcost () function, respectively, for some of the weight of the road and find the smallest. Some strange)

对matlab编写的积分函数做了总结，包括各种积分函数和它的matlab程序。(The integral function on matlab to do the preparation of a summary, including a variety of integral function and its matlab program.)

This Matlab code implements Cauchy s steepest descent method using Armijo stepsize rule

完整的循环谱计算代码，可以直接运用，稍加改动就可以变成其他的循环谱形式，欢迎下载。(Complete cycle spectrum calculation code can be directly applied, a little change can become another form of cyclic spectrum, welcome to download.)

本文从矢量量化的角度对图像进行处理，程序经过验证，正确(From the perspective of vector quantization image processing, the program verified the correct)

三电平三相四线制APF，在abc坐标系下进行电流环的控制，采用无差拍控制策略和载波同相调制方法，能够抑制谐波，补偿无功和治理三相不平衡，matlab2006b,高版本可能需要更换低通滤波器(Three- level three- phase four-wire APF, current loop control in abc coordinates, using deadbeat control strategy and carrier-phase modulation method that can suppress harmonics, reactive power compensation and governance phase unbalance, matlab2006b, high version may need to replace the low-pass filter)

ITU-R SM.1134-1建议书 陆地移动业务中互调干扰的计算. 本建议书为计算最多三种互调干扰提供了依据，接收机输出端出现的这种互调干扰，是接收机幅度响应的非线性在接收机输入端产生的强烈无用信号引起的。(Intermodulation interference calculations. ITU-R SM.1134-1 proposal in the land mobile service this proposal is calculated up to three intermodulation interference to provide a basis for this receiver output intermodulation interference, receiver nonlinear amplitude response due to strong unwanted signals at the receiver input.)

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