Evaluating Hyperspectral and Polarization Properties for Bathymetry and Water Property Estimation in Extremely Turbid Waters.

摘要

Riverine operations often require knowledge of water depth and hazards in turbid water environments. The ability to remotely retrieve bottom depths shallower than 0.5 m is critical to the insertion and extraction of personnel as well as navigation hazards which can hamper routes. Various passive methods have been employed to retrieve optical and bottom characteristics in clearer coastal environments using hyperspectral imagery (Lee, 2001), but these methods have not been evaluated for the extreme cases when multiple scattering is present. At this point the shape of the phase function and whether attenuation decreases are due to scattering or absorption are a critical factor. The Fleet requires that remote estimations of bathymetry in turbid waters be made. The goal is to determine whether or not hyperspectral imagery with the addition of polarization can improve the ability to discern bathymetry in the turbid water environments. How to extend the use of passive imagery in general for penetration into a turbid water column is a goal that impacts more than the riverine Special Forces Operations but also MCM and Port and Harbor Security.