Observation campaign dedicated to 1968-081E fragments identification

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题名:	Observation campaign dedicated to 1968-081E fragments identification
作者:	木下大輔;Uetsuhara, Masahiko;Yanagisawa, Toshifumi;Kinoshita, Daisuke;Hanada, Toshiya;Kitazawa, Yukihito
贡献者:	理學院天文研究所
关键词:	Aerospace Engineering;Astronomy and Astrophysics;Atmospheric Science;General Earth and Planetary Sciences;Geophysics;Optical observation;Orbital debris;Origin identification;Space and Planetary Science;Spacecraft breakup;Tracklet
日期:	2013-06-15
上传时间:	2026-04-21 14:20:40 (UTC+8)
出版者:	Elsevier Ltd.;Elsevier Ltd
摘要:	摘要： ► A new approach to associate obsevations with GEO breakup events is proposed. ► A pattern recognition algorithm is applied to find probable origins of observations. ► The latest GEO breakup event list is applied to this research. ► This research can be applied to probabilistic asssessments of GEO breakup events. 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. In this paper we conduct optical observations of breakup fragments to verify the proposed approach. We selected a well-known breakup event of the rocket body US Titan 3C Transtage (1968-081E) as the primary observation target, and then we conduct optical observations by campaign between two sensors in Taiwan and one sensor in Japan. While three nights observations, we detect 96 tracklets that are uncorrelated with the Space Surveillance Network catalogue at the observation epochs, and finally 50 tracklets among them are associated with the breakup event of 1968-081E. 出版者： Elsevier Ltd 出版日期： 2013-06-15 出處： Advances in Space Research, 2013-06, Vol.51 (12), p.2207-2215 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2013 COSPAR 識別號： ISSN: 0273-1177 識別號： EISSN: 1879-1948 識別號： DOI: 10.1016/j.asr.2013.02.008
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