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Paper Abstract and Keywords
Presentation 2011-01-20 12:45
A study on the detection of signals exceeding array degree of freedom
Masashi Tsuji, Kenta Umebayashi, Yukihiro Kamiya, Yasuo Suzuki (Tokyo University of Agriculture and Technology) AP2010-139
Abstract (in Japanese) (See Japanese page) 
(in English) A traditional DOA (Direction-Of-Arrival) estimation method can estimate the DOA up to $(N-1)$ signals when the number of elements is $N$. In the Nested-DOA where Nested array configuration and MUSIC (MUltiple SIgnal Classification) algorithm are used, the achievable number of signals is extended to $(N^2/4+N/2-1)$ when number of elements is $N$ and even. However, in the Nested-DOA it is assumed that information of the number of incident signals is known and false information about the number of incident signals may deteriorate the accuracy of DOA estimation. However, there are not enough investigations about estimation of the number of incident signals for the Nested-DOA. In this paper, we have proposed eigenvalue ratio-method to estimate the number of incident signals for the Nested-DOA. In the signal processing with Nested-array, the extension of degrees of freedom causes correlation factors which deteriorate the accuracy of number of incident signals estimation. For this problem, we use spatial smoothing preprocessing and investigate the number of subarrays for spatial smoothing preprocessing. Computer simulation results have shown that the proposed method can achieve the accurate number of incident signals estimation when the number of incident signals is 8, the number of elements is 6 and the number of subarrays is set as 11.
Keyword (in Japanese) (See Japanese page) 
(in English) Array Signal Processing / Array Degree of Freedom / Nested Arrays / Source Number Detection / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 371, AP2010-139, pp. 37-42, Jan. 2011.
Paper # AP2010-139 
Date of Issue 2011-01-13 (AP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
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reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee AP  
Conference Date 2011-01-20 - 2011-01-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Saga Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2011-01-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on the detection of signals exceeding array degree of freedom 
Sub Title (in English)  
Keyword(1) Array Signal Processing  
Keyword(2) Array Degree of Freedom  
Keyword(3) Nested Arrays  
Keyword(4) Source Number Detection  
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1st Author's Name Masashi Tsuji  
1st Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo University of Agriculture and Technology)
2nd Author's Name Kenta Umebayashi  
2nd Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo University of Agriculture and Technology)
3rd Author's Name Yukihiro Kamiya  
3rd Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo University of Agriculture and Technology)
4th Author's Name Yasuo Suzuki  
4th Author's Affiliation Tokyo University of Agriculture and Technology (Tokyo University of Agriculture and Technology)
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Speaker
Date Time 2011-01-20 12:45:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2010-139 
Volume (vol) IEICE-110 
Number (no) no.371 
Page pp.37-42 
#Pages IEICE-6 
Date of Issue IEICE-AP-2011-01-13 


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