Laser methods for the atmospheric correction of marine radiance data sensed from a satellite

Satellite remote sensing of sea color is a powerful instrument to perform oceanic studies. Unfortunately, the present data processing algorithms are not exempt from uncertainties, especially because the marine radiance must be separated from the atmospheric contributions, which typically represent about 80% of the total. In this paper we suggest the development of observation methods based on the optical radar or lidar. In fact, the numerical simulation of a sea-level optical radar demonstrates that, if applied to restricted areas, such system is a precise and versatile tool for the atmospheric correction of marine radiance data sensed from satellite (accuracy better than 10% for typical conditions). Moreover, the lidar is effective even in environments that would be severe for the standard corrective schemes. Finally, the feasibility of a spaceborne system is discussed.

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