Physics – Optics
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apopt..15.2539g&link_type=abstract
Applied Optics, vol. 15, Oct. 1976, p. 2539-2545.
Physics
Optics
9
Atmospheric Refraction, Laser Ranger/Tracker, Optical Paths, Satellite Tracking, Turbulence Effects, Atmospheric Turbulence, Correlation Coefficients, Monochromatic Radiation, Refractivity, Root-Mean-Square Errors, Two-Wavelength Lasers
Scientific paper
Effects of turbulence-induced pathlength fluctuations on the accuracy of single-color laser ranging systems are examined. Correlation and structure functions for the path deviations are derived using several proposed models for the variation of the turbulence structure parameter with altitude. For single-color systems, random pathlength fluctuations can limit the accuracy of a range measurement to a few centimeters when the turbulence is strong and the effective propagation path is long (greater than 10 km). Two-color systems can partially correct for the random path fluctuations so that in most cases their accuracy is limited to a few millimeters. However, at low elevation angles for satellite ranging (less than 20 deg) and over long horizontal paths, two-color systems can also have errors approaching a few centimeters.
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