Wavelength and angular dependence of reflectances and depolarization in the 9–11-μm region are reported for four standard targets: flowers of sulfur, flame-sprayed aluminum, 20-grit sandblasted aluminum, and 400-grit silicon carbide sandpaper. Measurements are presented and compared using a cw CO2 grating-tunable laser in a laboratory backscatter apparatus, an integrating sphere, and a coherent pulsed TEA-CO2 lidar system operating in the 9–11-μm region. Reflectance theory related to the use of hard targets to calibrate lidar atmospheric backscatter data is discussed.
© 1983 Optical Society of America
Original Manuscript: March 16, 1983
Published: September 1, 1983
Michael J. Kavaya, Robert T. Menzies, David A. Haner, Uri P. Oppenheim, and Pierre H. Flamant, "Target reflectance measurements for calibration of lidar atmospheric backscatter data," Appl. Opt. 22, 2619-2628 (1983)