Three airborne remote sensor systems to support shallow water hydrographic data collection over a wide range of environmental conditions using nonacoustic methods were developed. The laser sounder and multispectral scanner are active and passive optical sensors, respectively, and together make up the airborne bathymetric survey system. The airborne electromagnetic system uses electromagnetic techniques to obtain hydrographic data. The helicopter borne system operated at 95, 385, and 7200 Hz, in a horizontal coplanar configuration. Concurrent ground truth surveys included acoustic soundings and water conductivity measurements. Results are encouraging, and an operational system is envisioned.
Airborne Nonacoustic Bathymetric Survey Flight Test Results
1988
6 pages
Report
No indication
English
Nonacoustic combustor instability.
AIAA | 1967
|Nonacoustic combustor instability.
NTRS | 1967
|