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Wetlands survey
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1987 |
| Description | Ducks Unlimited, Inc. is dedicated to preservation of the world's waterfowl. Current inventories of wetland resources are crucial to effective waterfowl management. They contracted with NASA to use data from the LANDSAT satellites Thematic Mapper (TM), an advanced Earth scanning instrument that collects data in seven bands of the spectrum utilizing the Earth Resources Laboratory Applications Software (ELAS). The TM measures and records six values of light energy reflected from Earth and one value of heat energy as it scans the Earth below. On each orbital sweep, sensors produce a series of digital scenes representing features of Earth segments measuring about 100 by 110 miles, each scene covering about eight million acres, and each containing some 40 million bits of information called picture elements or pixels. They are computer processed and the resulting mosaic is projected on a digital display device. |
| File Size | 1827728 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020087768 |
| Archival Resource Key | ark:/13960/t5k982z8t |
| Language | English |
| Publisher Date | 1987-01-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Inventories Waterfowl Display Devices Earth Resources Scanners Applications Programs Computers Spectra Preserving Landsat Satellites Wetlands Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
