DocumentCode :
1049684
Title :
The SeaSat-A satellite scatterometer
Author :
Grantham, Williamm L. ; Bracalente, Emedio M. ; Jones, W. Linwood ; Johnson, James W.
Author_Institution :
NASA Langley Research Center, Hampton, VA, USA
Volume :
2
Issue :
2
fYear :
1977
fDate :
4/1/1977 12:00:00 AM
Firstpage :
200
Lastpage :
206
Abstract :
This paper describes the methods used to develop performance requirements and design characteristics for the microwave scatterometer (SASS) ocean-surface wind sensor on the NASA SeaSat-A satellite. Wind vector measurement requirements from the SeaSat user community such as wind speed and direction accuracy, resolution cell size, grid spacing, and swath width formed the basis for defining instrument characteristics. The resulting scatterometer is designed for 14.6 GHz using four fan beam antennas to measure wind speed and direction over a 1000-km swath width with a resolution cell size 50 \\times 50 km. Results presented show scatterometer accuracy satisfies user requirements for wind speed from 4 m/s to greater than 24 m/s for the nominal SeaSat-A orbit of 790 km altitude, 108\\deg inclination, and 0.001 eccentricity.
Keywords :
Meteorological satellites; Sea surface electromagnetic scattering; Antenna measurements; Extraterrestrial measurements; Microwave theory and techniques; Radar measurements; Satellites; Sea measurements; Sensor phenomena and characterization; Size measurement; Velocity measurement; Wind speed;
fLanguage :
English
Journal_Title :
Oceanic Engineering, IEEE Journal of
Publisher :
ieee
ISSN :
0364-9059
Type :
jour
DOI :
10.1109/JOE.1977.1145338
Filename :
1145338
Link To Document :
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