{"created":"2024-02-09T08:28:35.915934+00:00","id":2000254,"links":{},"metadata":{"_buckets":{"deposit":"5fca492b-b68c-4390-9789-02a00fc87cb8"},"_deposit":{"created_by":27,"id":"2000254","owner":"27","owners":[27],"pid":{"revision_id":0,"type":"depid","value":"2000254"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:02000254","sets":["1887:1893","9:1090:1695564675201:1706938177220"]},"author_link":[],"control_number":"2000254","item_1692929429513":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"UZUME ミッションは月の縦孔(現段階ではMare Tranquillitatis Hole: MTH)に直接入り込み，縦孔とその孔の底から水平空間に広がる地下空洞を探査することを目的としている．このミッションでは，光学カメラによる撮影を行い，MTH とその地下空洞の構造や表面の情報を取得することが考えられている．光学カメラ開発の基礎研究として，MTH とそれに付随する地下空洞の内部の放射照度を，数値シミュレーションで推定した．縦孔の底と壁，地下空洞の壁と天井は，太陽高度によっては，縦孔と地下空洞の底と壁に入射する太陽直達光の反射光により照らされる場合がある．本稿では一例として，太陽高度が45°のときの推定結果を示す．またその条件で，縦孔と地下空洞の反射率が0.1，撮影カメラはやぶさ２搭載のONC-W（ダイナミックレンジ12bit）と仮定した場合の，降下中の探査機のカメラの各画素への入射光量の推定結果を示す．この条件では，太陽直達光で照らされる領域と反射光のみによって照らされる領域が同時に撮影されるため，そのカメラのゲインを固定したままであると，0を超え，かつ最小値となるカメラ画素への入射光量の最小値を10-DNに分解し，最大入射光量が飽和しないようにすることは難しいことがわかった．このような場合において，撮影対象の領域の放射照度に適するゲインを設定した運用が必要である．この研究で作成されたシミュレーションは，月の縦孔や地下空洞の内部を撮影する光学機器やミッションを検討するための基礎として利用できる．","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"G332UZUME mission aims to directly enter a lunar vertical hole (currently Mare Tranquillitatis Hole: MTH) and explore the hole and a subsurface cavern horizontally expanding from the floor of the hole. The mission is planned to obtain the information of the surface structure for the MTH and the associated cavern by taking images with cameras. As preparation for the mission, we have preliminary estimated the illuminated condition of the inside of the MTH and its associated cavern by numerical simulations. The floor and the wall of the hole, the wall and the ceiling of the subsurface cavern are illuminated by reflected solar light from other parts of the hole and the cavern, such as the floors, depending on solar altitude. This paper presents the estimation results for the case when solar altitude is 45 deg, as an example. Assuming that the reflectance of the hole and the subsurface cavern is 0.1 and that the optical camera used is ONC-W (with 12-bit dynamic range) installed in Hayabusa 2, the estimated incident energy on each pixel of the camera during the explore descent is shown. In this case, the area illuminated by the direct solar light and the area illuminated only by the reflected light are captured simultaneously, making it difficult to resolve the minimum incident energy to 10-DN and avoid saturation of the incident energy if the gain of the camera is kept fixed. In such case, it is necessary to operate with a gain setting appropriate for the irradiance of areas to be photographed. Simulations conducted in this study can be used as a ground for investigation of optical equipment and missions that take photographs of inside of lunar holes and subsurface caverns.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_1692929640552":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"Physical  characteristics: Original contains color illustrations","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_1693472049263":{"attribute_name":"関係URI","attribute_value_mlt":[{"subitem_relation_type":"hasPart","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://jaxa.repo.nii.ac.jp/records/49021","subitem_relation_type_select":"URI"}}]},"item_1693474141533":{"attribute_name":"資料番号(Local)","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"資料番号: AA2330022000","subitem_relation_type_select":"Local"}}]},"item_1694684272217":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2023-12-01","subitem_date_issued_type":"Submitted"}]},"item_1695282775758":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"東海大学大学院工学研究科 : 宇宙航空研究開発機構宇宙科学研究所太陽系科学研究系 (JAXA)(ISAS)"},{"subitem_text_language":"ja","subitem_text_value":"宇宙航空研究開発機構宇宙科学研究所太陽系科学研究系 (JAXA)(ISAS)"},{"subitem_text_language":"ja","subitem_text_value":"東海大学大学院工学研究科"},{"subitem_text_language":"ja","subitem_text_value":"東海大学大学院工学研究科"},{"subitem_text_language":"en","subitem_text_value":"Graduate School of Engineering, Tokai University : Department of Solar System Science, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"},{"subitem_text_language":"en","subitem_text_value":"Department of Solar System Science, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"},{"subitem_text_language":"en","subitem_text_value":"Graduate School of Engineering, Tokai University"},{"subitem_text_language":"en","subitem_text_value":"Graduate School of Engineering, Tokai University"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-02-15","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"18","bibliographicVolumeNumber":"JAXA-RM-23-007","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発資料","bibliographic_titleLang":"ja"},{"bibliographic_title":"JAXA Research and Development Memorandum","bibliographic_titleLang":"en"}]}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-RM-23-007","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_3_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.20637/0002000254","subitem_identifier_reg_type":"JaLC"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構 (JAXA)","subitem_publisher_language":"ja"},{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)","subitem_publisher_language":"en"}]},"item_3_source_id_22":{"attribute_name":"ISSN ONLINE","attribute_value_mlt":[{"subitem_source_identifier":"2433-2224","subitem_source_identifier_type":"EISSN"}]},"item_3_version_type_30":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"東海大学 : 宇宙航空研究開発機構 (JAXA)","affiliationNameLang":"ja"},{"affiliationName":"Tokai University : Japan Aerospace Exploration Agency (JAXA)","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"池谷, 広大","creatorNameLang":"ja"},{"creatorName":"IKEYA, Kodai","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"宇宙航空研究開発機構 (JAXA)","affiliationNameLang":"ja"},{"affiliationName":"Japan Aerospace Exploration Agency (JAXA)","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"春山, 純一","creatorNameLang":"ja"},{"creatorName":"HARUYAMA, Junichi","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"東海大学","affiliationNameLang":"ja"},{"affiliationName":"Tokai University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"三宅, 亙","creatorNameLang":"ja"},{"creatorName":"MIYAKE, Wataru","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"東海大学","affiliationNameLang":"ja"},{"affiliationName":"Tokai University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"田中, 真","creatorNameLang":"ja"},{"creatorName":"TANAKA, Makoto","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2024-02-15"}],"filename":"AA2330022000.pdf","format":"application/pdf","mimetype":"application/pdf","url":{"url":"https://jaxa.repo.nii.ac.jp/record/2000254/files/AA2330022000.pdf"},"version_id":"58d5626a-c667-4109-a80b-11d3343c7597"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Moon","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"UZUME","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Lunar Hole","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"light environment","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"月の縦孔内部の光環境の推定（その２）","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"月の縦孔内部の光環境の推定（その２）","subitem_title_language":"ja"},{"subitem_title":"Estimation of the light environment inside a Lunar Hole (part 2)","subitem_title_language":"en"}]},"item_type_id":"40003","owner":"27","path":["1706938177220","1893"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-02-15"},"publish_date":"2024-02-15","publish_status":"0","recid":"2000254","relation_version_is_last":true,"title":["月の縦孔内部の光環境の推定（その２）"],"weko_creator_id":"27","weko_shared_id":-1},"updated":"2024-02-15T11:40:36.586344+00:00"}