Study on the Noise Reduction of Vehicle Exhaust NO<sub>X</sub> Spectra Based on Adaptive EEMD Algorithm

<div>Adaptive EEMD denoising flow chart based on normalized index optimization.</div>

Journal of Spectroscopy

Figure 3: Study on the Noise Reduction of Vehicle Exhaust NO<sub>X</sub> Spectra Based on Adaptive EEMD Algorithm 