DocumentCode :
2090120
Title :
The LEISA/Atmospheric Corrector (LAC) on EO-1
Author :
Reuter, Dennis C. ; McCabe, George H. ; Dimitrov, Rumen ; Graham, Steven M. ; Jennings, Donald E. ; Matsumura, Mark M. ; Rapchun, David A. ; Travis, Jeffrey W.
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Volume :
1
fYear :
2001
fDate :
2001
Firstpage :
46
Abstract :
The LEISA (Linear Etalon Imaging Spectral Array) Atmospheric Corrector (LAC or AC) on EO-1 is a hyperspectral imager providing 256 channel continuous spectra in the wavelength range from 0.93 to 1.58 microns. It has a single pixel spatial resolution of 250 meters, a 185 km swath-width and a spectral resolving power (λ/Δλ) of 200 or greater (<10 nm) throughout its spectral range. The imager employs a wedged filter, a sophisticated 2-dimensional filter whose transmission wavelength varies along one of the dimensions, to provide its spectral resolution. The use of the wedged filter greatly. simplifies the optical/mechanical design, so that the instrument is adaptable to a wide variety of platforms (i.e. it is a "bolt on" imager). In this paper we shall present an overview of the camera highlighting its unique features from both a design and data standpoint. We shall discuss the pre-launch instrument characterization process and on-orbit performance. This shall include the use of solar and lunar calibration techniques to obtain absolute radiometric calibration. The application of the data to the problem of atmospheric correction of high-spatial resolution multi-spectral satellite images (e.g. Landsat-type) shall be discussed
Keywords :
artificial satellites; geophysical equipment; geophysical techniques; remote sensing; terrain mapping; vegetation mapping; EO-1; LAC; LEISA; Linear Etalon Imaging Spectral Array; camera; equipment; geophysical measurement technique; hyperspectral imager; hyperspectral remote sensing; infrared imaging; instrument; land surface; performance; satellite remote sensing; terrain mapping; vegetation mapping; Atmospheric waves; Calibration; Hyperspectral imaging; Image resolution; Instruments; Los Angeles Council; Optical design; Optical filters; Optical imaging; Spatial resolution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
Type :
conf
DOI :
10.1109/IGARSS.2001.976053
Filename :
976053
Link To Document :
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