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Advances in Meteorology
Volume 2014, Article ID 294741, 6 pages
http://dx.doi.org/10.1155/2014/294741
Research Article

Atmospheric Error Correction of the Laser Beam Ranging

1Physics Department, Imam Hosein University, P.O. Box 16575-347, Tehran, Iran
2Malek-Ashtar University of Technology, Isfahan, Iran
3Center of Optics and Laser Researches, Malek-Ashtar University of Technology, Isfahan, Iran

Received 24 April 2014; Revised 28 July 2014; Accepted 12 August 2014; Published 7 September 2014

Academic Editor: Hesham El-Askary

Copyright © 2014 J. Saydi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Atmospheric models based on surface measurements of pressure, temperature, and relative humidity have been used to increase the laser ranging accuracy by ray tracing. Atmospheric refraction can cause significant errors in laser ranging systems. Through the present research, the atmospheric effects on the laser beam were investigated by using the principles of laser ranging. Atmospheric correction was calculated for 0.532, 1.3, and 10.6 micron wavelengths through the weather conditions of Tehran, Isfahan, and Bushehr in Iran since March 2012 to March 2013. Through the present research the atmospheric correction was computed for meteorological data in base of monthly mean. Of course, the meteorological data were received from meteorological stations in Tehran, Isfahan, and Bushehr. Atmospheric correction was calculated for 11, 100, and 200 kilometers laser beam propagations under 30°, 60°, and 90° rising angles for each propagation. The results of the study showed that in the same months and beam emission angles, the atmospheric correction was most accurate for 10.6 micron wavelength. The laser ranging error was decreased by increasing the laser emission angle. The atmospheric correction with two Marini-Murray and Mendes-Pavlis models for 0.532 nm was compared.