| Abstract: | The Landsat-5 (L5) Thematic Mapper (TM) detectors of the short wave infrared (SWIR) bands 5 and 7 are maintained on cryogenic temperatures to minimize thermal noise and allow adequate detection of scene energy. Over the instrument‘s lifetime, gain oscillations are observed in these bands that are caused by an ice-like contaminant that gradually builds up on the window of a dewar that houses these bands‘ detectors. This process of icing, an effect of material outgassing in space, is detected and characterized through observations of Internal Calibrator (IC) data. Analyses of IC data indicated three to five percent uncertainty in absolute gain estimates due to this icing phenomenon. The thin-film interference lifetime models implemented in the image product generation systems at the U.S. Geological Survey (USGS) Center for Earth Resources Observation and Science (EROS) successfully remove up to 80 percent of the icing effects for the image acquisition period from the satellite‘s launch in 1984 until 2001; however, their correction ability was found to be much lower for the time thereafter. This study concentrates on improving the estimates of the contaminant film growth rate and the associated change in the period of gain oscillations. The goal is to provide model parameters with the potential to correct 70 to 80 percent of gain uncertainties caused by outgassing effects in L5 TM bands 5 and 7 over the instrument‘s entire lifetime. ?? 2007 IEEE. |
| Genre: | Conference Paper |
| ProdID: | 70034543 |
| Citation Author: | Micijevic, E.; Chander, G.; Hayes, R. W. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 2863 |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | International Geoscience and Remote Sensing Symposium (IGARSS) |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 4 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Improved outgassing models for the Landsat-5 thematic mapper; 2007; Conference Paper; International Geoscience and Remote Sensing Symposium (IGARSS); Micijevic, E.; Chander, G.; Hayes, R. W. |
| Citation Start Page: | 2860 |
| Citation Volume: | |
| Citation Year: | 2007 |
| Type: | citation/reference |
| Text: | Improved outgassing models for the Landsat-5 thematic mapper; 2007; Conference Paper; International Geoscience and Remote Sensing Symposium (IGARSS); Micijevic, E.; Chander, G.; Hayes, R. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1109/IGARSS.2007.4423440 |
| Date Other: | Mon, 1 Jan 2007 00:00 -0600 |
| Publisher: | |
