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某石油公司计划建造一条由东向西的主输油管道。该管道要穿过一个有n 口油井的油田。从每口油井都要有一条输油管道沿最短路经(或南或北)与主管道相连。如果给定n 口油井的位置,即它们的x 坐标（东西向）和y 坐标（南北向）,应如何确定主管道的最优位置, 即使各油井到主管道之间的输油管道长度总和最小的位置?证明可在线性时间内确定主管道的最优位置。(An oil company plans to construct a east to west from the main pipeline. The pipeline to pass through an oil field n wells. Wells from each must have a pipeline along the shortest path (or South or North) connected with the competent Road. If given the location of oil wells in n, that is, their x coordinates (east-west) and y coordinates (north-south), should be how to determine the optimal position in charge of Road, even if the wells to the pipeline in charge of Road between the sum of the smallest length location? proved to be linear time to determine the optimal position in charge of Road.)

说明：  克里金法（Kriging）是依据协方差函数对随机过程/随机场进行空间建模和预测（插值）的回归算法(The implement of Kriging)

find the center of gravity of speech singal.

sc-fdma 系统物力资源块的分配，利用对于每个用户选取其最大的信道增益，对照组随机选取信道进行传输.(material dispensing system resource blocks sc-fdma, selected by the user for each use of the maximum channel gain, the control group randomly selected transmission channel.)

用于对扩频滑动相关器信道检测的仿真，对127位的PN序列进行了仿真，载波频率2.4GHz( Spread Spectrum Sliding Correlator Channel Sounding )

产生M序列，可以作为系统的输入，经过系统辨识后得到输出，进而得到系统的传递函数(M sequences generated can be used as the input, output obtained through system identification, and further to the transfer function)

this is matlab program for turbo code set up.

导航定位中的单点定位，采用最小二乘法计算接收机位置，进行定位。(Navigation and positioning of the single point positioning, receiver position is obtained by using the least squares method, to locate.)

A code for locating an earthquake

关于FFT变换的源程序,需要的朋友别错过咯，适合所有关于FFT的初学者(the order of FFT，you need it,suit for all the beginner of FFT.)