{"created":"2023-06-20T14:43:50.350315+00:00","id":11212,"links":{},"metadata":{"_buckets":{"deposit":"e1d05012-076a-4da3-b2a3-13809433300a"},"_deposit":{"created_by":1,"id":"11212","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"11212"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00011212","sets":["1543:1580:1593","1887:1891"]},"author_link":["98069","98061","98063","98070","98062","98065","98064","98068","98060","98073","98072","98067","98066","98071"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Development of a VSOP-2 link system"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-01-05","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"256","bibliographicPageStart":"255","bibliographic_titles":[{"bibliographic_title":"第6回宇宙科学シンポジウム"},{"bibliographic_title":"Proceedings of the 6th Space Science Symposium","bibliographic_titleLang":"en"}]}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"次期スペースVLBI(Very Long Base Interferometry) VSOP-2(VLBI Space Observatory Program-2)計画では、3つの観測周波数帯(8、22、43GHz)の観測信号の1Gbpsという超広帯域データ伝送をKa帯の電波を用いて行う。このような広帯域VLBI観測・高速データ伝送システムは既に地上では実用化され始めているが、スペースではまだ例がなく十分な検討が必要である。各周波数帯の信号を2段の周波数変換の後、A/D変換を行い、シングルキャリアのQPSK(Quadratic Phase Shift Keying)変調の後、Ka帯で地上にダウンリンクする観測システムを提案する。また回線設計を行った結果、晴天時、降雨時のいずれの場合でもリンクマージンを確保できることが分かった。","subitem_description_type":"Abstract"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0063353021","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構宇宙科学研究本部"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"国立天文台"},{"subitem_text_value":"宇宙航空研究開発機構"},{"subitem_text_value":"宇宙航空研究開発機構"},{"subitem_text_value":"宇宙航空研究開発機構"},{"subitem_text_value":"宇宙航空研究開発機構"},{"subitem_text_value":"宇宙航空研究開発機構"},{"subitem_text_value":"Korea Astronomy Observatory"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Astronomical Observatory"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration 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Yasuhiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hirabayashi, Hisashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Mochizuki, Nanako","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Toda, Tomoaki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Asaki, Yoshiharu","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Wajima, 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