{"created":"2023-06-20T15:40:11.199105+00:00","id":274,"links":{},"metadata":{"_buckets":{"deposit":"b0c6c39a-6539-4ade-81a1-6ea9c399cacf"},"_deposit":{"created_by":17,"id":"274","owners":[17],"pid":{"revision_id":0,"type":"depid","value":"274"},"status":"published"},"_oai":{"id":"oai:nagano-nct.repo.nii.ac.jp:00000274","sets":["3:16"]},"author_link":["562","563","560","569","552","564","556","567","557","565","568","554","555","553","558","559","561","566"],"item_2_alternative_title_1":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Try for the Meteor Sicence by Meteors Radio Observations System"}]},"item_2_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2000-12-27","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"106","bibliographicPageStart":"95","bibliographicVolumeNumber":"34","bibliographic_titles":[{"bibliographic_title":"長野工業高等専門学校紀要"}]}]},"item_2_description_19":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application","subitem_description_type":"Other"}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Radio meteor scatter is an ideal technique for observing meteors continuously. Meteor trails can reflect radio waves from distant transmitters back to earth, so when a meteor appears one can sometimes receive meteor echoes from radio source away from the observing site. For radio observation of meteors, amateur Ham-band beacon signals are useful as stable radio source. We started the two observation systems of the automating HRO (Ham-band Radio Observation) by monitoring the signals from the radio receiver with computers in August 2000, using the continuous transmission of beacon signals for meteor observations at 53.750MHz, 50W from Fukui National College of Technology (Sabae, Fukui, JAPAN). From the initial experiments, we confirmed that HRO method using a spectrogram software (FFTHRO) is sensitive enough to detect weak meteor echoes and to detect an hourly and a diurnal variation of meteors. From this, we also recognize that we need a better theory to understand the a correct interpretation of observed data. We derived the formula of the detection efficiency of meteors which depends on the position of transmitters and receivers. And we applied this formula for main meteor showers (Perseids, Leonids, Geminids), and showed that the time variation HRO detection number of each main meteor showers are consistent with our formula. At the same time, we derived the formula of reflection point of meteors. To check this formula experimentally, we can prove that the radio echo is really the echo due to meteor. Then we start to construct the new experimental systems; the one is the Position Determination System that detect the motion of the reflection point of meteor radio signal using the paired antennas, the other is the Polarized Wave Determination System which detect the difference of the polarized radio wave due to the reflection at the meteor trails using the other paired antennas; this will be a first System in the world.","subitem_description_type":"Abstract"}]},"item_2_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"長野工業高等専門学校"}]},"item_2_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00179170","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0286-1909","subitem_source_identifier_type":"ISSN"}]},"item_2_version_type_20":{"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_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"大西, 浩次"}],"nameIdentifiers":[{"nameIdentifier":"552","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"服部, 忍"}],"nameIdentifiers":[{"nameIdentifier":"553","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"西村, 治"}],"nameIdentifiers":[{"nameIdentifier":"554","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"宮澤, 明子"}],"nameIdentifiers":[{"nameIdentifier":"555","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"藤沢, 雄章"}],"nameIdentifiers":[{"nameIdentifier":"556","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"駒込, 徳臣"}],"nameIdentifiers":[{"nameIdentifier":"557","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"石川, 寿之"}],"nameIdentifiers":[{"nameIdentifier":"558","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"柳沢, 雅俊"}],"nameIdentifiers":[{"nameIdentifier":"559","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"遠藤, 誠"}],"nameIdentifiers":[{"nameIdentifier":"560","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"伊藤, 雄作"}],"nameIdentifiers":[{"nameIdentifier":"561","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"川邨, 雅貴"}],"nameIdentifiers":[{"nameIdentifier":"562","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"丸山, 俊之"}],"nameIdentifiers":[{"nameIdentifier":"563","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"柞山, 快"}],"nameIdentifiers":[{"nameIdentifier":"564","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"志水, 甲平"}],"nameIdentifiers":[{"nameIdentifier":"565","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"徳永, 麻伊"}],"nameIdentifiers":[{"nameIdentifier":"566","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"青木, 良枝"}],"nameIdentifiers":[{"nameIdentifier":"567","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"飯島, 由紀子"}],"nameIdentifiers":[{"nameIdentifier":"568","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小林, 彩"}],"nameIdentifiers":[{"nameIdentifier":"569","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2013-02-19"}],"displaytype":"detail","filename":"nagano_nct-34-13.pdf","filesize":[{"value":"2.5 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"nagano_nct-34-13.pdf","url":"https://nagano-nct.repo.nii.ac.jp/record/274/files/nagano_nct-34-13.pdf"},"version_id":"dc80a1f5-dd82-4b9d-a9f0-5e4f4776473b"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"meteor","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"meteor showers","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Sextantid","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Perseids","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"HRO","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"FFT","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"radio meteor detection efficiency","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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"流星電波観測による流星科学をめざして","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"流星電波観測による流星科学をめざして"}]},"item_type_id":"2","owner":"17","path":["16"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-02-19"},"publish_date":"2013-02-19","publish_status":"0","recid":"274","relation_version_is_last":true,"title":["流星電波観測による流星科学をめざして"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-06-20T16:13:14.858322+00:00"}