未知の到来方向を含んだ参照信号を用いたマイクロホンアレーの校正

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2024/02/01

タイトル(英語): Array Shape Calibration Using Pilot Sources with Known and Unknown Directions of Arrival

著者名: 村上　隆啓（明治大学理工学部電気電子生命学科），小野寺　章吾（明治大学理工学部電気電子生命学科），丹治　寛樹（明治大学理工学部電気電子生命学科）

著者名(英語): Takahiro Murakami (Department of Electronics and Bioinformatics, School of Science and Technology, Meiji University), Shogo Onodera (Department of Electronics and Bioinformatics, School of Science and Technology, Meiji University), Hiroki Tanji (Department of Electronics and Bioinformatics, School of Science and Technology, Meiji University)

キーワード: マイクロホンアレー，アレー校正，最小二乗法，到来方向推定，アレー信号処理 microphone array，array shape calibration，least squares method，direction-of-arrival estimation，array signal processing

要約(英語): In this paper, an algorithm for array shape calibration is proposed. Our method uses two pilot signals. In the proposed method, we assume that the direction of arrival (DOA) of one pilot signal is available, but the DOA of the other is unknown. Then, we estimate the unknown DOA of the pilot signal and the location errors of a microphone array simultaneously. To estimate the unknown parameters, we firstly optimize a cost function derived from the phases of the signal subspace that is obtained from observed signals. The optimal solution obtained from the cost function is a function of the unknown DOA. Second, assuming that the location errors of a microphone array follow the Gaussian distribution, the DOA of the pilot signal is estimated by minimizing the squared sum of the obtained optimal solution. Simulations and the experiment in a real environment validate our algorithm.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.144 No.2 （2024） 特集：ディジタル信号処理の基礎と応用

本誌掲載ページ: 53-63 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/144/2/144_53/_article/-char/ja/