{"created":"2023-06-20T15:14:51.766768+00:00","id":44870,"links":{},"metadata":{"_buckets":{"deposit":"ac5f4411-740f-4c3e-81ab-54427fd2a8c1"},"_deposit":{"created_by":1,"id":"44870","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"44870"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00044870","sets":["1887:1893","1896:1898:1913:1917"]},"author_link":["471676","471678","471677","471679"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Analysis of Center Frequency Measurement of Narrow-Band Random Signals with 3-Level Quantized Correlator"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1980-06","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"15","bibliographicVolumeNumber":"615","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所報告"},{"bibliographic_title":"Technical Report of National Aerospace Laboratory TR-615","bibliographic_titleLang":"en"}]}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"In many cases of instrumentation, it is necessary to measure the center frequency of narrow-band random signals, and a way utilizing an autocorrelator has been suggested. In this method, the input signals are quantized in proper steps and are used for calculating the autocorrelation function. The center frequency of input signals is obtained from the zero crossing points of the autocorrelation function. The quantization steps are determined by considering both accuracies and the complexity of the actual circuits. Though the 2-level quantization has been employed and it gives the simplest circuits, it suffers from the lowered accuracy due to the signal fluctuations and phase disturbances in the range of small signal amplitudes. In this paper, the analysis of measuring error for 2-level and 3-level quantization was done and the results are compared with each other. This shows that 3-level quantization gives far more accurate measurement of center frequencies of narrow-band random signals than 2-level quantization with little penalty of circuit complexity.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: NALTR0615000","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: NAL TR-615","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"航空宇宙技術研究所"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"National Aerospace Laboratory(NAL)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0389-4010","subitem_source_identifier_type":"ISSN"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"航空宇宙技術研究所原動機部"},{"subitem_text_value":"東京工業大学"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Aeroengine Division, National Aerospace Laboratory(NAL)"},{"subitem_text_language":"en","subitem_text_value":"Tokyo Institute of Technology"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"松田, 幸雄"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小林, 彬"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"MATSUDA, Yukio","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"KOBAYASHI, Akira","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":"2020-01-29"}],"displaytype":"detail","filename":"naltr00615.pdf","filesize":[{"value":"755.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"naltr00615.pdf","url":"https://jaxa.repo.nii.ac.jp/record/44870/files/naltr00615.pdf"},"version_id":"a3744cda-7670-4d5b-92ec-054a0dba751d"}]},"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":"狭帯域不規則信号用3値相関型中心周波数測定系の解析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"狭帯域不規則信号用3値相関型中心周波数測定系の解析"}]},"item_type_id":"3","owner":"1","path":["1893","1917"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"44870","relation_version_is_last":true,"title":["狭帯域不規則信号用3値相関型中心周波数測定系の解析"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T21:49:24.231913+00:00"}