Mendes, V. B.Pavlis, Erricos C.2020-10-142020-10-142002-10V. B. Mendes and Erricos C. Pavlis, Atmospheric Refraction at Optical Wavelengths: Problems and Solutions, https://cddis.nasa.gov/lw13/docs/papers/atmos_mendes_1m.pdfhttp://hdl.handle.net/11603/1984513th International Laser Ranging Workshop, October 07 through 11, 2002 , Washington, D.C.Atmospheric refraction is an important accuracy-limiting factor in the application of satellite laser ranging (SLR) to high-accuracy applications. The modeling of that source of error in the analysis of SLR data comprises the determination of the delay in the zenith direction and subsequent projection to a given elevation angle, using a mapping function. Standard data analyses practices use the Marini-Murray model for both zenith delay determination and mapping. This model was tailored for a particular wavelength and is not suitable for all the wavelengths used in modern SLR systems. Using ray tracing through a large database of radiosonde data, we assess the zenith delay models and mapping functions currently available and the sensitivity of models and functions to changes in the wavelength and we give some recommendations towards a unification of practices and procedures in SLR data analysis.6 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Public Domain Mark 1.0This is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Text