Wavelet analysis(WT) was conducted on the simulated near infrared spectra(NIR) obtained by adding simulated background and simulated noise into diesel NIR.

• 通过对在柴油近红外光谱中加入模拟噪声和模拟背景构成的模拟光谱进行小波分析,考察了模拟噪声和模拟背景(线性、二阶和三阶非线性漂移)在小波时-频区域的分布。