JALBTCX Bottom Reflectance
Data Specifications
- Area of Coverage: Varies
- Date(s) Available: Range from 2004 to present
- Format: GeoTIFF
- Resolution: Generally four-to-five-meter resolution
- Accuracy: The accuracy is within five percent of the true reflectance. The horizontal accuracy is better than +/- 0.75m. The vertical accuracy is better than +/- 0.20m.
Overview
The U.S. Army Corps of Engineers’ National Coastal Mapping Program provides high-resolution elevation and imagery data along U.S. shorelines on a 5 to 7 year update schedule. The program uses the Compact Hydrographic Airborne Rapid Total Survey (CHARTS) system, which integrates topographic and bathymetric lidar sensors, a digital camera, and a hyperspectral scanner on a single remote sensing platform for use in coastal mapping and charting activities. One derived data set from CHARTS is bottom reflectance, which is generated from individual bathymetric waveforms that are rasterized and formed into a mosaic.
The Corps’ Orthomosaics and Bathymetry and Topography data are also available in Digital Coast.
For information about additional CHARTS products, visit the Corps’ Joint Airborne Lidar Bathymetry Technical Center of Expertise website.