Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- 1998.09a
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- Pages.319-324
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- 1998
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- 1226-9743(pISSN)
Characteristics of Ocean Scanning Multi-spectral Imager (OSMI)
- Cho, Young-Min (Korean Aerospace Research Institute, Space Division) ;
- Yong, Sang-Soon (Korean Aerospace Research Institute, Space Division) ;
- Woo, Sun-Hee (Korean Aerospace Research Institute, Space Division) ;
- Lee, Sang-Gyu (Korean Aerospace Research Institute, Space Division) ;
- Oh, Kyoung-Hwan (Korean Aerospace Research Institute, Space Division) ;
- Paik, Hong-Yul (Korean Aerospace Research Institute, Space Division)
- Published : 1998.09.01
Abstract
Ocean Scanning Multispectral Imager (OSMI) is a payload on the Korean Multi-purpose SATellite (KOMPSAT) to perform worldwide ocean color monitoring for the study of biological oceanography. The instrument images the ocean surface using a whisk-broom motion with a swath width of 800 km and a ground sample distance (GSD) of < 1 km over the entire field-of-view (FOV). The instrument is designed to have an on-orbit operation duty cycle of 20% over the mission lifetime of 3 years with the functions of programmable gain/offset and on-board image data storage. The instrument also performs sun calibration and dark calibration for on-board instrument calibration. The OSMI instrument is a multi-spectral imager covering the spectral range from 400 nm to 900 nm using a CCD Focal Plane Array (FPA). The ocean colors are monitored using 6 spectral channels that can be selected via ground commands after launch. The instrument performances are fully measured for 8 basic spectral bands centered at 412nm, 443nm, 490nm, 510nm, 555nm, 670nm, 765nm and 865nm during ground characterization of instrument. In addition to the ground calibration, the on-board calibration will also be used for the on-orbit band selection. The on-orbit band selection capability can provide great flexibility in ocean color monitoring.
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