{"updated":"2025-01-21T12:14:26.375960+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00099018","sets":["1164:4061:7498:7499"]},"path":["7499"],"owner":"11","recid":"99018","title":["三次元都市モデルとGPS信号のSNRを用いた携帯端末の存在領域判定"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-03-07"},"_buckets":{"deposit":"7d1e5f0a-3619-42a6-ab93-cbfe35e04368"},"_deposit":{"id":"99018","pid":{"type":"depid","value":"99018","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"三次元都市モデルとGPS信号のSNRを用いた携帯端末の存在領域判定","author_link":["0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"三次元都市モデルとGPS信号のSNRを用いた携帯端末の存在領域判定"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"測位","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2014-03-07","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"大阪大学大学院情報科学研究科"},{"subitem_text_value":"大阪大学大学院情報科学研究科"},{"subitem_text_value":"大阪大学大学院情報科学研究科"},{"subitem_text_value":"大阪大学大学院情報科学研究科"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Information Science & Technology, Osaka University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science & Technology, Osaka University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science & Technology, Osaka University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science & Technology, Osaka University","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/99018/files/IPSJ-UBI14041032.pdf"},"date":[{"dateType":"Available","dateValue":"2016-03-07"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-UBI14041032.pdf","filesize":[{"value":"6.7 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"36"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"21a37f5a-521f-451c-ba7e-362c826c22b2","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2014 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"上嶋祐紀"},{"creatorName":"内山彰"},{"creatorName":"山口弘純"},{"creatorName":"東野輝夫"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11838947","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本研究では都市部における GPS を用いた高信頼な端末の存在領域推定を目標に，都市部の 3 次元モデルを利用した手法を提案する．提案手法では，各地点と各 GPS 衛星の間に障害物が存在する状態 (NLOS:None-Line-Of-Sight) であるか，または存在しない状態 (LOS:Line-Of-Sight) であるかを事前に計算し，フィンガープリントとする．携帯端末が受信した GPS の Signal to Noise Ratio (SNR) から LOS/NLOS を学習データに基づき判定し，その判定結果とフィンガープリントに応じて各地点に端末が存在している尤度 （存在尤度） を決定する．しかし，フィンガープリントとのマッチングのみではフィンガープリントの境界付近において安定した結果が得られない場合がある．そこで，提案手法では短期間の SNR 分布に対する統計量から端末の移動に伴う LOS/NLOS の切り替わりを検知する．これによって，フィンガープリントの境界を通過した場合に切り替わり後の地点の存在尤度を一時的に高めることができ，安定した結果が得られる．フィンガープリントの境界通過検知について大阪大学構内で実験を行った結果，検知率，正解率はともに高いことがわかり，平均を用いた場合は検知率は 97%，正解率は 95%，遅延時間は 3.5秒，変化量を用いた場合は検知率は 84%，正解率は 98%，遅延時間は 1.9秒となることがわかった．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"8","bibliographic_titles":[{"bibliographic_title":"研究報告ユビキタスコンピューティングシステム（UBI）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2014-03-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"32","bibliographicVolumeNumber":"2014-UBI-41"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"created":"2025-01-18T23:45:07.137909+00:00","id":99018,"links":{}}