tulunsuanfayusheji

％ This program calculates Dilution of Precision with respect to a GPS * ％ receiver given its Cartesian ECEF position and the positions of four or * ％ more visible GPS satellites. It is a validation of the DOP algorithm and * ％ contains reference positions for which the DOP results are known. * ( This program calculates Dilution of Precision with respect to a GPS* receiver given its Cartesian ECEF position and the positions of four or* more visible GPS satellites. It is a validation of the DOP algorithm and* contains reference positions for which the DOP results are known.*)

基于matlab 搭建的跳频系统的源代码。(Frequency hopping systems built based on matlab source code.)

主要是用PCA主矢量分析的方法在稀疏优化的运用，代码简单易懂，适合初学者(The method is mainly used in the PCA main vector analysis to optimize the use of sparse code easy to understand for beginners)

用于时间序列ARMA模型定阶程序,效果还可以，供大家参考！(a program for Time Series ARMA model order determination)

MATLAB CODE FOR QPSK

1、验证窗函数 N 变化时，验证其频谱主瓣副瓣比、主瓣宽度的变化。 a)矩形窗函数的 N 变化时，验证其其频谱主瓣副瓣幅度比基本不会发生变化， 而主瓣宽度将会变窄。这说明，当用矩形窗函数设计滤波器时，增大 N 不能使 得阻带衰减减小，但能够减小过渡带。 b)再选取其他的窗如 hamming/hanning 窗，验证当 N 变化时，其频谱主瓣宽 度变化、主瓣副瓣比值变化情况。 2、用窗函数法设计线性相位 FIR 低通，通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI, 阻带衰减不小于 40dB,通带衰减不大于 3dB. a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否 满足要求，二者有什么不同。 b)使用 hamming 窗，将窗长增大 1 倍，设计 FIR。验证同样的窗函数类型 (hamming)，不同窗长度时，设计出来的 FIR 的过渡带宽和阻带衰减都有什么变 化。 3、不使用 Matlab 系统函数得到上一项指标的低通，并与上一项结果比较。 4 用窗函数法设计线性相位 FIR 高通，通带截止频率 wp=0.8PI, 阻带截止频率 ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter. For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter. In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter Transition bandwidth.)

mmse接收 不错的程序,希望能够给大家参考(mmse receiving good procedures, we hope to be able to make reference to)

matlab, this is Ljapunov (variant2) function for linear unstable system

三电平的双闭环SPWM有源电力滤波器仿真(Three-level dual closed-loop SPWM active power filter simulation)

联邦滤波器三个通道滤波后数据融合结果，并考虑了丢包，能对高斯噪声及非线性滤波有较好的处理。(Federal filter three channel filtered data fusion results, taking into account the loss can Gaussian noise and nonlinear filtering process better.)