dbri_subr

MRAC + RLS method

EMD分解及HHT分解，主要功能是能把混合信号分解成其所含的各频率成分(HHT EMD decomposition and decomposition, the main function is to be able to decompose mixed signal into its frequency components contained in the)

改进的NHT程序，可以对数据进行归一化，效果较以前的好(improved NHT method)

说明：  利用matlab绘制bragg光栅的反射谱，入射光谱范围为1548-1552(Bragg grating matlab rendering reflection of spectrum.The incident spectral range for 1548-1552.)

compressive sensing theory

用于学习matlab语言编程的PPT文档，里面含有编程源代码。(Matlab programming language for learning PPT document, which contains programming source code.)

当信噪比较大时，采用广义最小二乘法可能会出现多个局部收敛点，解决这个问题的方法可用多级最小二乘法，一般来说多级最小二乘法包含三级辨识过程。利用输入输出数据，通过多级最小二乘法，可分别求的辅助模型，过程模型和噪声模型的参数估计值。在高噪声的情况下，多级最小二乘法明显优于广义最小二乘法，其收敛点唯一。(When the signal noise ratio (SNR), and by use of the generalized least squares method may appear more local convergence point, the way of solving this problem can be used multistage least squares method, and generally multistage least squares method includes three identification process. Using input/output data, through the multistage least squares, respectively for the auxiliary model, process model and noise model parameter estimation. In the high noise, multistage least squares method is obviously superior to the generalized least squares method, and its convergence point only.)

wilkinson method for ber computation

时域有限差分法，利用FDTD原理，以matlab为源程序编写的二维方柱的rcs(Finite difference time domain method, FDTD principle matlab prepared for the source of two-dimensional square columns rcs)

EMD经验模态分解,用于信号处理，常和hilbert-huang变换一起用于信号特征提取、信号消噪等领域。(EMD EMD for signal processing, often with hilbert-huang transform for signal feature extraction, signal de-noising and other fields.)