ber_ldpc4_FFT_H

此程序为极化对消方面的仿真应用，在电磁矢量传感器方面的仿真应用。(This procedure for the simulation of the polarization cancellation in the simulation of the electromagnetic vector sensor.)

包含了特征提取需要用到的四种积分双谱，主要用于辐射源个体识别中对信号稳态特征的提取(Contains four kinds of integral bispectrum needed for feature extraction)

主要是用于提取超声导波的时域特征，例如偏度参数、峰度系数、形状系数、离散系数等等(Time Domain Characteristics for Extracting Ultrasound Guided Waves)

用MATLAB编写的时钟，希望对感兴趣的人有用(a clock code with matlab , hope useful to the one interested~)

matlab编写的程序，曲线拟合方面的，希望对大家有用(Curve fitting area, matlab program written in the hope that more exchanges)

Intermodulation or intermodulation distortion (IMD) is the amplitude modulation of signals containing two or more different frequencies in a system with nonlinearities. The intermodulation between each frequency component will form additional signals at frequencies that are not just at harmonic frequencies (integer multiples) of either, but also at the sum and difference frequencies of the original frequencies and at multiples of those sum and difference frequencies.

该算法主要实现将经纬度变换成大地坐标，其主要用在海试等外场试验中。(The algorithm to realize the coordinates transform into the main geodetic coordinates, its main use in the field test and try. )

重力异常的向上延拓程序，很实用，，推荐地球物理学生学习可直接使用。 (Gravity anomaly upward extension program, it is practical, and recommended geophysics student learning can be used directly.)

comparaison de vecteurs aléatoires

gram schmidt algorithm to compensate i and q channel imbalance in noisy channel