DocumentCode :
483970
Title :
Very Shallow Water Bathymetry Retrieval from Hyperspectral Imagery at the Virginia Coast Reserve (VCR´07) Multi-Sensor Campaign
Author :
Bachmann, Charles M. ; Montes, Marcos J. ; Fusina, Robert A. ; Parrish, Christopher ; Sellars, Jon ; Weidemann, Alan ; Goode, Wesley ; Nichols, C. Reid ; Woodward, Patrick ; McIlhany, Kevin ; Hill, Victoria ; Zimmerman, Richard ; Korwan, Daniel ; Truitt,
Author_Institution :
Remote Sensing Div., Naval Res. Lab., Washington, DC
Volume :
2
fYear :
2008
fDate :
7-11 July 2008
Abstract :
A number of institutions, including the Naval Research Laboratory (NRL), have developed look up tables for remote retrieval of bathymetry and in-water optical properties from hyperspectral imagery (HSI) [6]. For bathymetry retrieval, the lower limit is the very shallow water case (here defined as < 2m), a depth zone which is not well resolved by many existing bathymetric LIDAR sensors, such as SHOALS [4]. The ability to rapidly model these shallow water depths from HSI directly has potential benefits for combined HSI/LIDAR systems such as the Compact Hydrographic Airborne Rapid Total Survey (CHARTS) [10]. In this study, we focused on the validation of a near infra-red feature, corresponding to a local minimum in absorption (and therefore a local peak in reflectance), which can be correlated directly to bathymetry with a high degree of confidence. Compared to other VNIR wavelengths, this particular near-IR feature corresponds to a peak in the correlation with depth in this very shallow water regime, and this is a spectral range where reflectance depends primarily on water depth (water absorption) and bottom type, with suspended constituents playing a secondary role.
Keywords :
bathymetry; geophysical signal processing; geophysical techniques; optical radar; remote sensing by radar; underwater optics; CHARTS; Compact Hydrographic Airborne Rapid Total Survey; LIDAR sensors; Naval Research Laboratory; SHOALS; VNIR wavelengths; Virginia Coast Reserve; hyperspectral imagery; in-water optical property; multi-sensor campaign; near-IR feature; remote retrieval; shallow water depths; very shallow water bathymetry retrieval; water absorption; Electromagnetic wave absorption; Hyperspectral imaging; Hyperspectral sensors; Image retrieval; Information retrieval; Laser radar; Oceanographic techniques; Reflectivity; Sea measurements; Water; Hydrolight; IOP; Virginia Coast Reserve; bottom type; hyperspectral; shallow-water bathymetry;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
Type :
conf
DOI :
10.1109/IGARSS.2008.4778943
Filename :
4778943
Link To Document :
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