Laser-induced fluorescence characteristics of vegetation by a new excitation wavelength

ABSTRACT

To recognize different vegetation species exactly, especially the species of the same family, laser-induced fluorescence characteristics of vegetation, which is excited by 556 nm laser rather than the traditional 355 nm excitation light source, is proposed to be utilized in this article. The experimental results demonstrated that fluorescence characteristics of vegetation induced by a 556 nm laser are more obvious than that induced by a 355 nm laser. These fluorescence spectra, combined with multivariate analysis, are utilized to identify different vegetation species. The 100% of recognition rate was then acquired. Therefore, this study shows that different plant types could be accurately identified when a 556 nm laser serves as excitation light source.

KEYWORDS:

• Laser-induced fluorescence
• multivariate analysis
• principal component analysis
• vegetation