Exploring Techniques for Improving Retrievals of Bio-optical Properties of Coastal Waters.

摘要

Long term goals: Development of algorithms for improved retrievals and monitoring of inherent water optical properties (IOP) from satellite imagery of coastal waters with current and future sensors for improvement of Navy electro-optical system performance utilizing: (1) VIS-NIR channels, (2) polarization characteristics of light in sea water and (3) advanced atmospheric correction schemes. Objectives: Enhancement of algorithms for IOP retrieval from reflectance spectra with utilization of VIS and NIR bands through: (a) the use of reflectance characteristics obtained from red-NIR measurements as additional constraints in basic inversion models, (b) utilization of satellite data (SeaWiFS, MODIS, MERIS, etc.) and the data from the LISCO offshore platform. Utilization of underwater and above water polarization components of reflectance spectra for the improvement of in-water visibility by particle type discrimination, and algorithm development through: (a) the simulation of polarization components of reflectance for coastal water environments using polarized radiative transfer and (b) measurements of polarization characteristics in field conditions to validate radiative transfer modeling and assess possibilities for the separation of organic and inorganic particulate components, improvement of underwater visibility and target detection. Development of advanced atmospheric correction models including (a) incorporation of additional constraint for atmospheric correction in coastal waters, (b) development of the interface to perform retrievals based on real time radiometer and lidar observations.