Probabilistic resident space object detection using archival THEMIS fluxgate magnetometer data |
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Authors: | Julian Brew Marcus J Holzinger |
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Institution: | The Guggenheim School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States |
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Abstract: | Recent progress in the detection of small space objects, at geosynchronous altitudes, through ground-based optical and radar measurements is demonstrated as a viable method. However, in general, these methods are limited to detection of objects greater than 10?cm. This paper examines the use of magnetometers to detect plausible flyby encounters with charged space objects using a matched filter signal existence binary hypothesis test approach. Relevant data-set processing and reduction of archival fluxgate magnetometer data from the NASA THEMIS mission is discussed in detail. Using the proposed methodology and a false alarm rate of 10%, 285 plausible detections with probability of detection greater than 80% are claimed and several are reviewed in detail. |
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Keywords: | Resident space objects Matched filter Admissible region Geostationary orbit Binary hypothesis testing Space situational awareness |
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