{"created":"2023-05-15T15:25:19.621289+00:00","id":12914,"links":{},"metadata":{"_buckets":{"deposit":"baba4daf-3696-4053-b040-aaad3803485f"},"_deposit":{"created_by":3,"id":"12914","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"12914"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00012914","sets":["94:426"]},"author_link":["20361","18438","20360"],"item_119_alternative_title_1":{"attribute_name":"タイトル（別言語）","attribute_value_mlt":[{"subitem_alternative_title":"&EMPTY&"},{"subitem_alternative_title":"Two-Dimensional Spectral Estimation Method with Data Extension and its Improvement"}]},"item_119_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1995","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"8","bibliographicPageEnd":"976","bibliographicPageStart":"965","bibliographicVolumeNumber":"J78-A","bibliographic_titles":[{"bibliographic_title":"電子情報通信学会論文誌. A, 基礎・境界"}]}]},"item_119_description_19":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"少数データアレーからの2次元正弦波信号の周波数を推定する目的において,2次元スペクトル推定法を適用することを考える.代表的な2次元線形予測法である2次元自己相関法とFrostらによって提案されたデータ拡張法を比較し,データ拡張法の方が良好なスペクトル推定結果を与えることを示す.しかし,付加雑音の混入は,データ拡張法の推定精度を劣化させる.そこで,まず,1次元処理において,Yule-Walker方程式における相関行列の対角成分から雑音パワーを引き去る雑音成分補正法に着目する.そして,従来未解決とされていた,雑音パワーの良好な推定法の探索と雑音パワーの推定値の引きすぎによるAR係数推定精度の劣化の問題を同時に解決できる,簡潔かつ効率的な雑音補正AR係数推定法を導出する.更に,それをデータ拡張法へ適用することにより,改良データ拡張法を導く.この改良法により,データ予測精度の向上と共に,大幅に改善される2次元スペクトルの推定結果が得られることが示される.","subitem_description_type":"Abstract"}]},"item_119_description_21":{"attribute_name":"注記","attribute_value_mlt":[{"subitem_description":"copyright(c)1995 IEICE\n許諾番号：07RB0174　\nhttp://www.ieice.org/jpn/trans_online/index.html","subitem_description_type":"Other"}]},"item_119_description_29":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_119_description_30":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_119_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"社団法人電子情報通信学会"}]},"item_119_source_id_14":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"09135707","subitem_source_identifier_type":"ISSN"}]},"item_119_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"Shimamura, Tetsuya"},{"subitem_text_value":"Miao, Weiguo"},{"subitem_text_value":"Suzuki, Jouji"}]},"item_119_text_32":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"A1003087"}]},"item_119_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"埼玉大学大学院理工学研究科"},{"subitem_text_value":"埼玉大学工学部情報工学科"},{"subitem_text_value":"埼玉大学工学部情報工学科"}]},"item_119_text_5":{"attribute_name":"著者 所属(別言語)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Science and Engineering, Saitama University"},{"subitem_text_value":"Department of Information and Computer Sciences, Faculty of Engineering Saitama University"},{"subitem_text_value":"Department of Information and Computer Sciences, Faculty of Engineering Saitama University"}]},"item_119_text_9":{"attribute_name":"年月次","attribute_value_mlt":[{"subitem_text_value":"1995-8"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"島村, 徹也"},{"creatorName":"シマムラ, テツヤ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"繆, 衛国"},{"creatorName":"ミアオ, エイグオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鈴木, 誠史"},{"creatorName":"スズキ, ジョウジ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-24"}],"displaytype":"detail","filename":"A1003087.pdf","filesize":[{"value":"812.0 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"A1003087.pdf","url":"https://sucra.repo.nii.ac.jp/record/12914/files/A1003087.pdf"},"version_id":"43690b79-6cc5-4607-8530-bae7bc8c30a3"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"2次元スペクトル推定","subitem_subject_scheme":"Other"},{"subitem_subject":"自己相関法","subitem_subject_scheme":"Other"},{"subitem_subject":"データ拡張","subitem_subject_scheme":"Other"},{"subitem_subject":"雑音補正","subitem_subject_scheme":"Other"},{"subitem_subject":"AR係数推定","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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"データ拡張を利用する2次元スペクトル推定法とその改良","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"データ拡張を利用する2次元スペクトル推定法とその改良"}]},"item_type_id":"119","owner":"3","path":["426"],"pubdate":{"attribute_name":"公開日","attribute_value":"2007-10-04"},"publish_date":"2007-10-04","publish_status":"0","recid":"12914","relation_version_is_last":true,"title":["データ拡張を利用する2次元スペクトル推定法とその改良"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T12:45:59.283447+00:00"}