Accuracy analysis of optical ranging in atmosphere

Hong-wu Yuan; Yin-bo Huang; Hai-ping Mei; Rui-zhong Rao

doi:10.1117/12.835651

28 August 2009 Accuracy analysis of optical ranging in atmosphere

Hong-wu Yuan, Yin-bo Huang, Hai-ping Mei, Rui-zhong Rao

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73822N (2009) https://doi.org/10.1117/12.835651
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Optical ranging is one of the most precise techniques for distance measurement. The effects of the density variation of atmosphere, aerosols and clouds on optical ranging precision are generally considered, a new method is proposed for calculating the ranging precision in the presence of aerosol particles and clouds. The size distribution spectrum models for aerosols and clouds in the Optical Properties of Aerosols and Clouds Package (OPAC) are adopted. Results show that aerosols and clouds could introduce errors of several centimeters to several ten meters to the ranging. The relationship between the ranging precision and the relative humidity, the zenith angle of ranging direction and the optical wavelength is also analyzed. The ranging error doesn't have an obvious relationship with the wavelength, but depends on the zenith angle, especially for the angle larger than 70 degree. The ranging error depends on the relative humidity as well. The ranging error induced by aerosols increases gradually with the increase of the relative humidity when the relative humidity is less than 80%, but it increases rapidly when the relative humidity is larger than 80%. Our results could provide a theoretical basis and reference for the application of optical ranging.

Citation Download Citation

Hong-wu Yuan, Yin-bo Huang, Hai-ping Mei, and Rui-zhong Rao "Accuracy analysis of optical ranging in atmosphere", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73822N (28 August 2009); https://doi.org/10.1117/12.835651

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