Multicolor laser altimeter for barometric measurements over the ocean: Theoretical

The optical path length from a satellite to the earth’s surface is strongly dependent on the atmospheric pres­sure along the propagation path. Surface pressure can be measured by using a two-color laser altimeter to observe the change with wavelength in the optical path length from a satellite to the ocean surface. The sta­tistical characteristics of the ocean-reflected pulses and the expected measurement accuracy are evaluated in terms of the altimeter parameters. The results indicate that a pressure accuracy of a few millibars is fea­sible.