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Radiometric calibration of an airborne CO2 pulsed Doppler lidar with a natural Earth surface

Dean R. Cutten, Jeffry Rothermel, Maurice A. Jarzembski, R. Michael Hardesty, James N. Howell, David M. Tratt, and Vandana Srivastava

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Abstract

Radiometric calibration of an airborne CO2 pulsed Doppler lidar has been accomplished with surface retroreflection signals from the White Sands National Monument, New Mexico. Two circular passes were made at altitudes of 6.3 and 9.3 km. The computed calibration factors for both altitudes are in excellent agreement with the value derived from standard ground-based measurements involving a fixed sandpaper target of known reflectance. This finding corroborates a previous study that successfully calibrated an airborne cw Doppler lidar with a variety of natural Earth surfaces. The present results indicate that relatively uniform Earth surface targets can be used for in-flight calibration of CO2 pulsed airborne and, in principal, other infrared lidars.

© 2002 Optical Society of America

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