对于不同光谱进行对比,通过包络线去除,可以更好的进行光谱特征分析和特征选择,尤其在后续计算光谱吸收深度中,可以发挥更重要作用。 3 matlab实现 光谱包络线 %放入光谱库文件 clc;clear; T = readtable('lib-150bands-02e-t-e.xlsx'); band = T{:,["Var1"]}; alunit_spc = T{:,["a_alunit_spc"]...
一、MATLAB envelope 函数的基本语法 MATLAB envelope 函数的基本语法如下：[y_upper, y_lower] = envelope(x)[y_upper, y_lower] = envelope(x, fs, 'analytic')其中，x 是要提取包络的信号；fs 是信号的采样频率。二、MATLAB envelope 函数的输入参数 1. x：要提取包络的信号 - x 可以是一个一维的...
在MATLAB中,hilbert函数用于计算输入信号的解析信号。解析信号是原始信号经过Hilbert变换得到,它包含有关信号幅值和相位的完整信息。该函数采用单个输入参数,即待分析的实值时域信号,并返回与之对应的复数解析信号。 2.3 应用示例: 以下是一个使用hilbert函数的示例代码: ```matlab % 生成一个正弦波信号 t = 0:0.01...
envelope (https://www.mathworks.com/matlabcentral/fileexchange/24902-envelope), MATLAB Central File Exchange. Retrieved February 26, 2025. MATLAB Release Compatibility Created with R2008a Compatible with any release Platform Compatibility Windows macOS Linux Others Also Downloaded DXFLib 12K Download...
Extended Capabilities C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. Version History Introduced in R2015b See Also findpeaks | hilbert | movmax | movmean | movmin | rms Topics Envelope ExtractionWhy did you choose this rating? Submit How useful was this information?
0.0 (0) 2.8K Downloads Updated14 Apr 2009 View License Share Open in MATLAB Online Download This function begins by deducing the wavelength of the signal's primary Fourier component. It then smooths the signal using a moving-window average -- the window is roughly top hat, of size equal ...
在MATLAB中,通过使用Envelope函数可以很方便地提取信号的包络。该函数的语法为: ```matlab envelope(y) ``` 其中,y表示输入信号,可以是一个向量、矩阵或多维数组。该函数返回的结果是输入信号的包络。 下面我们通过一个简单的例子来演示如何使用Envelope函数。假设有一个正弦信号,频率为10 Hz,幅度为1,采样频率为10...
在Matlab中,Envelope可以用来分析信号的包络,以提取信号中的重要特征。 在Matlab中,使用envelope函数可以计算信号的包络曲线。这个函数的语法如下: [y_upper, y_lower] = envelope(y) [y_upper, y_lower] = envelope(y, M, 'peak') [y_upper, y_lower] = envelope(y, M, 'rms') 其中,y是输入信号,...
MATLAB 릴리스 호환 정보 개발 환경: R2008a 모든 릴리스와 호환 플랫폼 호환성 Windows macOS Linux 관련 추천 애드온 DXFLib 다운로드 수: 12K stlwrite - write ASCII or Binary STL files 다운로드 수: 29.3K k-Wave...
Cite As Lei Wang (2025). Envelope1.1 (https://www.mathworks.com/matlabcentral/fileexchange/3142-envelope1-1), MATLAB Central File Exchange. Retrieved February 22, 2025. MATLAB Release Compatibility Created with R12.1 Compatible with any release Platform...