Observation campaign dedicated to 1968-081E fragments identification |
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Authors: | Masahiko Uetsuhara Toshifumi Yanagisawa Daisuke Kinoshita Toshiya Hanada Yukihito Kitazawa |
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Institution: | 1. Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;2. Japan Aerospace Exploration Agency, 7-44-1 Jindaiji Higashi-machi, Chofu, Tokyo 182-8522, Japan;3. National Central University, 300 Jungda Rd, Jungli, Taoyuan 320-54, Taiwan;4. IHI Corporation, 3-1-1 Toyosu, Koto-ku, Tokyo 135-8710, Japan |
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Abstract: | This paper proposes a comprehensive approach to associate origins of space objects newly discovered during optical surveys in the geostationary region with spacecraft breakup events. A recent study has shown that twelve breakup events would be occurred in the geostationary region. The proposed approach utilizes orbital debris modeling techniques to effectively conduct prediction, detection, and classification of breakup fragments. Two techniques are applied to get probable results for origin identifications. First, we select an observation point where a high detection rate for one breakup event among others can be expected. Second, we associate detected tracklets, which denotes the signals associated with a physical object, with the prediction results according to their angular velocities. The second technique investigates which breakup event a tracklet would belong to, and its probability by using the k-nearest neighbor (k-NN) algorithm. |
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Keywords: | Orbital debris Spacecraft breakup Optical observation Tracklet Origin identification |
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