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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Li, X. Ramachandran, R. Movva, S. Graves, S. Germany, G. Lyatsky, W. Tan, A. |
| Copyright Year | 2004 |
| Description | Author affiliation: Alabama Univ., Huntsville, AL (Li, X.; Ramachandran, R.; Movva, S.; Graves, S.; Germany, G.) |
| Abstract | Aurora study is a key area in understanding the connection and interaction of the solar-terrestrial system. Auroral events are monitored on the global scale at the Far Ultraviolet (FUV) spectrum by satellite-based sensors. However, the existence of dayglow emission significantly limits scientists is the ability to determine the location and the size of auroral ovals. A dynamic methodology to remove day airglaw emission from the LBHL band UVI images on the Polar satellite is presented in this paper. First, the methodology identifies the geomagnetic latitude bound of the night side auroral oval. Then, the maximum range of geomagnetic latitude bound of the auroral is inferred based on the domain knowledge. Using the non-auroral dayglow pixels, a multi-variable regression fit of the intensity as function of the cosine of the solar zenith angle and cosine of the satellite viewing zenith angle is obtained. The methodology then uses this fitting function to estimate the dayglow intensity and to remove its effect in the LBHL band FUV images. This methodology does not require an external source of input solar flux and the dayglow removal is solely based on individual images. Experiment results show that dayglow effect is removed significantly from the original LBHL FUV images. Using this methodology, the performance of auroral oval detection algorithms is significantly improved |
| Starting Page | 3774 |
| Ending Page | 3777 |
| File Size | 365072 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780387422 |
| DOI | 10.1109/IGARSS.2004.1369944 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-09-20 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Satellites Ultraviolet sources Geomagnetism Detection algorithms Magnetic field measurement Monitoring Instruments Shape Magnetic flux Magnetosphere |
| Content Type | Text |
| Resource Type | Article |
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