Airborne Laser Hydrography in the United States

Airborne Laser Hydrography in the United States PDF

Author: Van K. Nield

Publisher:

Published: 1980

Total Pages: 14

ISBN-13:

DOWNLOAD EBOOK →

Conventional waterborne hydrographic survey methods have become exceedingly expensive while the need for improvement of charts is increasing rapidly. The U.S. Government is developing techniques to conduct rapid, efficient surveys; especially airborne laser bathymeters. The first system should be in use by 1983. It will penetrate to 28 meters under typical conditions and will be deployed in a helicopter from a coastal survey ship. A hybrid system using a combined laser and multispectral scanner is also under development for surveying clear, shoal areas. Advanced high pulse rate laser systems are also under study. (Author).

Obstruction Detection and Data Decimation for Airborne Laser Hydrography

Obstruction Detection and Data Decimation for Airborne Laser Hydrography PDF

Author:

Publisher:

Published: 1996

Total Pages: 16

ISBN-13:

DOWNLOAD EBOOK →

Airborne lidar technology is attractive for hydrographic surveying because of its high rate of area coverage coupled will high spatial data density, rapid-response and reconnaissance capabilities, and cost effectiveness. The National Ocean Service (NOS) has been involved in the design, implementation, and testing of such systems in conjunction with NASA, the U.S. Navy, and the U.S. Army Corps of Engineers (USACE) since 1975. Two topics of current interest are 1) the probability of detection of small objects on the sea bottom as a function of their size, and 2) the efficient reduction of the very large data sets to hydrographically representative but much smaller subsets. Results for both of these are reported here.

Lanterna Rally - Theme by Grace Themes