JP4725879B2 - 到来方向推定装置 - Google Patents
到来方向推定装置 Download PDFInfo
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- JP4725879B2 JP4725879B2 JP2004259836A JP2004259836A JP4725879B2 JP 4725879 B2 JP4725879 B2 JP 4725879B2 JP 2004259836 A JP2004259836 A JP 2004259836A JP 2004259836 A JP2004259836 A JP 2004259836A JP 4725879 B2 JP4725879 B2 JP 4725879B2
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平田 明史、タユフェールエディ、青野 智之、山田 寛喜、大平 孝、「エスパアンテナを用いたリアクタンスドメインMUSIC法によるコヒーレント2波の到来方向推定実験」,信学技報,AP2003−24,pp.59−64,May 2003. E. Chu, E. Taillefer, T. Ohira, "Direction-of-Arrival Estimation with a 7-Element Regular-Hexagonal Shaped ESPAR Antenna Employing the ESPRIT Algorithm", IEICE Technical report A.P2003-119, pp. 19-24, Aug. 2003.
Claims (2)
- L(Lは、正の整数)個のコヒーレント波の到来方向を推定する到来方向推定装置であって、
1本の給電素子と前記給電素子の周囲に円形配列されたM(Mは、M+1≧2Lを満たす整数)本の無給電素子とからなるM+1本のアンテナ素子を含むアレーアンテナと、
前記M本の無給電素子に装荷された可変容量素子の少なくとも1つの容量を変化させて前記アレーアンテナの指向性を切換える指向性切換手段と、
前記アレーアンテナの指向性が複数の指向性に切換えられたときに前記アレーアンテナが受信する受信信号に基づいて、前記M+1本のアンテナ素子が円形配列されたときの第1の相関行列を演算し、その演算した第1の相関行列の要素を変換行列により再配列して前記M+1本のアンテナ素子が直線配列されたときの第2の相関行列を演算し、その演算した第2の相関行列に順方向/逆方向平均法を適用して前記L個のコヒーレント波の相関を示す第3の相関行列を演算し、その演算した第3の相関行列を前記M+1本のアンテナ素子が前記円形配列されたときの平均相関行列に変換し、その変換した平均相関行列に基づいて前記アレーアンテナを複数のサブアレーに分離したときの前記複数のサブアレー間の位相差を演算して前記L個のコヒーレント波の到来方向を推定する方向推定手段とを備える到来方向推定装置。 - 前記方向推定手段は、前記第3の相関行列の要素を前記変換行列を用いて前記M+1本のアンテナ素子が前記円形配列されたときの配列に変換することによって前記第3の相関行列を前記平均相関行列に変換する、請求項1に記載の到来方向推定装置。
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Cited By (1)
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KR101807499B1 (ko) * | 2016-05-13 | 2017-12-11 | 국방과학연구소 | 상호간섭효과를 보상한 원형 배열 안테나 기반의 도래각 추정 장치 및 추정 방법 |
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JP2008267909A (ja) * | 2007-04-18 | 2008-11-06 | Mitsubishi Electric Corp | 信号処理装置およびその方法 |
KR101956449B1 (ko) * | 2017-04-25 | 2019-03-08 | 서강대학교산학협력단 | 행렬의 거듭제곱기법을 이용한 도래방향각 추정방법, 상기 방법을 이용한 도래방향각 추정장치, 및 상기 방법을 이용한 도래방향각 추정시스템 |
CN109521392B (zh) * | 2018-10-24 | 2022-12-16 | 华南理工大学 | 基于非圆信号和l型线阵的水下一维doa估计方法和装置 |
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JP3428884B2 (ja) * | 1997-12-03 | 2003-07-22 | 三菱電機株式会社 | 測角信号処理装置およびこの測角信号処理装置における測角信号処理方法 |
JP3477132B2 (ja) * | 1999-12-27 | 2003-12-10 | 株式会社東芝 | 到来波の入射方位角測定装置 |
JP3964366B2 (ja) * | 2003-05-14 | 2007-08-22 | 株式会社国際電気通信基礎技術研究所 | 電波到来方向探知方法 |
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KR101807499B1 (ko) * | 2016-05-13 | 2017-12-11 | 국방과학연구소 | 상호간섭효과를 보상한 원형 배열 안테나 기반의 도래각 추정 장치 및 추정 방법 |
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