Laser Bathymetry in the Netherlands
article
Four institutes were involved in a common program to study the potentials of an airborne laser bathymetry system. Apart from the determination of the water depth, a laser bathymetry system can also be applied for measuring the scattering properties of the water and for obtaining information on the water surface. The optical path from the sensor to the bottom was used as a guideline for describing the contributions of the different media and interfaces. The influence of the air-water interface was studied by introducing an ad hoc model for the water surface. This wind driven model includes capillary and gravity waves. To study the system performance, simulations were carried out for different water properties, different sensor altitudes and different system sensitivities. A system consisting of a dual wavelength scanning part (green and infrared) and a fixed infrared part has been proposed to measure the water depth together with the actual water level respectively the average water level. An opto-mechanical scanner design with two rotating wedges promises a flexible scan pattern. Finally the requirements were studied for analog and digital signal processing, data acquisition and in- and after flight data processlng.
TNO Identifier
94518
Source
EARSeL Advances in Remote Sensing, 1(February), pp. 36-41.
Publisher
European Association of Remote Sensing Laboratories
Collation
6 p.
Pages
36-41
Files
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