gridfit

code for blind channel equalization

单载波频域均衡，用来恢复信号的，使传输信号的失真最小。(Single-carrier frequency domain equalization is used to restore the signal to transmit the minimum signal distortion.)

15通用可逆性的银行和MIMO systems.pdf多维数字滤波器(15Generic invertibility of multidimensional FIR filter banks and MIMO systems.pdf)

用于数据处理过程中，删除噪声和异常数据，提高数据均值特性(For data processing, remove the noise and abnormal data, improve data mean characteristics)

emd去噪，不同于小波去噪，去噪效果比小波还要好，能够反映数据的最基本特点。(emd de-noising, unlike wavelet de-noising, even better than the wavelet denoising effect, to reflect the basic characteristics of the data.)

说明：  基于密度的轨迹聚类，可以将轨迹进行分类，代码齐全，可供参考(Based on the density of trajectory clustering, trajectory can be classified, the code is complete, for reference)

C=CURVEFIT( 拟合模型 ,参数C初值,X数据,Y数据) 求参数C使得 sum {(FUN(C,X数据)-Y数据).^2}最小化(C = CURVEFIT ( fitting model and parameter C, initial X, Y data) for data parameters that sum {there (C) (C, X-ray data- Y j ^ 2) minimizing})

设计一个低通数字滤波器，满足如下设计指标： 通带截止频率：0.2pi，通带波动：1dB 阻带截止频率：0.3pi，阻带衰减：15dB 要求：采用切比雪夫Ⅱ型滤波器原型，并分别采用脉冲响应不变变换法和双线性变换法进行设计，比较设计的结果，并进行分析 (Design a low pass digital filters that meet the following design specifications: passband cutoff frequency: 0.2pi, pass-band fluctuations: 1dB stopband cutoff frequency: 0.3pi, stop-band attenuation: 15dB requirements: use of Chebyshev filter prototypes with type Ⅱ and pulse response were the same transformation and bilinear transformation method designed to compare the results of the design and analysis)

灰关联上的源代码，主要用于计算机使用，便于计算者进行灰关联计算。(matlab)

fGenerateNavigationData.m C_A_code_generator.m GPSsignal.m 依次产生导航电文,C/A码,GPS最终数据(fGenerateNavigationData.m C_A_code_generator.m GPSsignal.m in turn generate the navigation message, C/A code, GPS final data)