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Airborne Measurements of Atmospheric Pressure with a Two-Color Streak Camera-Based Laser Altimeter

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Abstract

Gardner [1] has proposed a method for remotely measuring atmospheric pressure over the oceans by performing two-color ranging to the ocean surface. The use of short pulse lasers and high time resolution receivers is key to this approach, since the differential atmospheric delay must be measured with psec-level accuracy [2,3]. Recording the ocean reflected waveform with high temporal resolution also permits sea-state and wave height information to be obtained with this technique [4]. Abshire, et al. [5] have made initial airborne two-color pressure measurements in 1983 with a photomultiplier-based system which had 600 psec time resolution. These aircraft flights measured the change in atmospheric pressure between the 1000 and 4000 ft flight altitudes, but the pressure accuracy was limited by the receiver speed.

© 1985 Optical Society of America

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