{"created":"2023-06-20T15:03:54.465828+00:00","id":33108,"links":{},"metadata":{"_buckets":{"deposit":"f304aafe-cb39-485c-a498-305b0f491a4f"},"_deposit":{"created_by":1,"id":"33108","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"33108"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00033108","sets":["1887:1890","1896:1898:1899:1912"]},"author_link":["414326","414331","414332","414327","414333","414338","414328","414329","414336","414335","414334","414339","414337","414325","414324","414330"],"item_9_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Electromagnetic Interference (EMI) Measurements for the EXOS-D Satellite"}]},"item_9_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1991-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"91","bibliographicPageStart":"77","bibliographicVolumeNumber":"28","bibliographic_titles":[{"bibliographic_title":"宇宙科学研究所報告. 特集: 宇宙観測研究報告"}]}]},"item_9_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"EXOS-D衛星は1989年2月21日に打ち上げられ, その後伸展物の展開, 高圧電源の投入を経て, 観測態勢に入った。VLF装置によるプラズマ波動の観測は, 一部他の搭載機器との電磁干渉が見られるが, 概ね良質のデータが取得されており, PFX装置で観測されたオメガ信号及びホイスラ空電のk及びPoynting vectorの解析に成功している。また, WB受信機やMCA装置により, オーロラに関連したHissやfunnel typeのエミションのスペクトラムが観測されている。この様に, 概ね良質な波動データを取得できたのは, 次のようなEMI対策によるところが大きい。すなわち第1次噛み合わせにおいて, 全てのサブシステムを衛星に組み込んだ後に各サブシステムからの放射磁界雑音特性を測定し(システム全体により構成されるループからの放射も含む), その雑音強度がVLF班の測定対象としている波動のレベル(磁界センサーが検出できる最小レベルを基準にすることが望ましいが)を越えている場合, そのサブシステムについてEMI対策をお願いした。改修後, 単体によるEMI測定を行なった。更に, 第2次噛み合わせにおいて, 組み上げ後再度EMIテストを行なった。このようにして, 各サブシステムのPIのご協力により, 放射磁界干渉雑音強度を減少させることが出来た。しかし, 一部の搭載機器においては, その改修によるシステム全体に与える影響を避けるため, そして改修にかかる時間的制約のもとで, 干渉を減らす為の装置の改修を諦めざるを得なかった。本報告では, EXOS-Dの干渉試験を通して得られたいくつかのEMI対策方法や資料について述べる。また, 打ち上げ後の軌道上におけるVLF装置と他サブシステムとの干渉結果についても述べる。そして, これらの経験を通して作成された1992年打ち上げ予定の科学衛星(GEOTAIL)に於けるEMC規制値についても触れる。","subitem_description_type":"Abstract"}]},"item_9_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"High quality observations of VLF waves in the magnetosphere by VLF instruments on board EXOS-D have been possible because electromagnetic interference (EMI) tests were carried out twice before launch. As a result some of the instruments on board were modified to either eliminate magnetic noise sources or reduce magnitude of the noise. The present paper describes magnetic noise data from the on-board instruments acquired during the assembly tests and discusses several ways to reduce the magnetic noise. Magnetic intensities were measured, in a shielded room, in a frequency range of 20Hz to 20kHz with both on-board loop antennas and a horizontally orientend search coil located at a distance of 1.5m from the center of the satellite. The interference data obtained after launch are also presented. Our experiences of EMI measurements for EXOS-D were used to define requirements for electromagnetic interference of GEOTAIL which are briefly introduced.","subitem_description_type":"Other"}]},"item_9_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: SA0166982000","subitem_description_type":"Other"}]},"item_9_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙科学研究所"}]},"item_9_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Institute of Space and Astronautical Science"}]},"item_9_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0285-9920","subitem_source_identifier_type":"ISSN"}]},"item_9_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00354485","subitem_source_identifier_type":"NCID"}]},"item_9_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"金沢大学工学部"},{"subitem_text_value":"京都大学工学部"},{"subitem_text_value":"富山県立大学"},{"subitem_text_value":"三菱電気"},{"subitem_text_value":"東京電機大学"},{"subitem_text_value":"宇宙科学研究所"},{"subitem_text_value":"日本電気(株)"},{"subitem_text_value":"日本電気(株)"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"長野, 勇"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"木村, 磐根"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"岡田, 敏美"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山本, 正幸"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"橋本, 弘蔵"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鶴田, 浩一郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"川口, 正芳"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"杉森, 明志"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"NAGANO, ISAMU","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"KIMURA, IWANE","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"OKADA, TOSHIMI","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"YAMAMOTO, MASAYUKI","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HASHIMOTO, KOZO","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"TSURUDA, KOICHIRO","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"KAWAGUTI, MASAYOSI","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"SUGIMORI, AKASHI","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-24"}],"displaytype":"detail","filename":"SA0166982.pdf","filesize":[{"value":"1.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"SA0166982.pdf","url":"https://jaxa.repo.nii.ac.jp/record/33108/files/SA0166982.pdf"},"version_id":"d2b7562d-5688-4758-9fb3-192d8fcc505e"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"EXOS-D の EMI 測定(VLF 波動観測装置への干渉)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"EXOS-D の EMI 測定(VLF 波動観測装置への干渉)"}]},"item_type_id":"9","owner":"1","path":["1890","1912"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"33108","relation_version_is_last":true,"title":["EXOS-D の EMI 測定(VLF 波動観測装置への干渉)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T00:15:25.204285+00:00"}