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| Presentation | 2014-04-17 14:50 [Invited Lecture] High-resolution DOA Estimation Using Spatial Smoothing Preprocessing with Augmented Array Aperture Nobuyoshi Kikuma, Kiyotoshi Sekine, Toshiki Iwai, Hiroshi Hirayama, Kunio Sakakibara (NITech)  AP2014-8 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | When spatial smoothing(SS) is used as a preprocessing for direction-of-arrival(DOA) estimation using an array antenna, the effective array aperture is reduced to the size of subarray. This usually results in degradation of angular resolution and decrease of number of incident waves which can be estimated. In order to improve this situation, we focus on spatial smoothing using the augmented array aperture technique called SSIA (spatial smoothing with improved effective aperture) for DOA estimation. It is a technique of overcoming the drawback that the effective array aperture is reduced in using SS. However, if multiple snapshots are utilized, SSIA cannot work well because the array steering vector (mode vector) changes depending on snapshots. In this paper, therefore, we propose an improved technique of using the augmented array aperture in a similar manner, which is called SSOA (spatial smoothing with overlapped effective aperture). Afterwards, we show via computer simulation that the proposed technique provides higher accuracy of DOA estimation for the case where more than one snapshot is available. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | DOA estimation / array antenna / spatial smoothing / augmented array aperture / multiple snapshots / coherent sources / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 5, AP2014-8, pp. 41-44, April 2014. | |
| Paper # | AP2014-8 | |
| Date of Issue | 2014-04-10 (AP) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and 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) | |
| Download PDF | AP2014-8 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2014-04-17 - 2014-04-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ritsumeikan University (Suzaku Campus) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2014-04-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High-resolution DOA Estimation Using Spatial Smoothing Preprocessing with Augmented Array Aperture |
| Sub Title (in English) | |
| Keyword(1) | DOA estimation |
| Keyword(2) | array antenna |
| Keyword(3) | spatial smoothing |
| Keyword(4) | augmented array aperture |
| Keyword(5) | multiple snapshots |
| Keyword(6) | coherent sources |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Nobuyoshi Kikuma |
| 1st Author's Affiliation | Nagoya Institute of Technology (NITech) |
| 2nd Author's Name | Kiyotoshi Sekine |
| 2nd Author's Affiliation | Nagoya Institute of Technology (NITech) |
| 3rd Author's Name | Toshiki Iwai |
| 3rd Author's Affiliation | Nagoya Institute of Technology (NITech) |
| 4th Author's Name | Hiroshi Hirayama |
| 4th Author's Affiliation | Nagoya Institute of Technology (NITech) |
| 5th Author's Name | Kunio Sakakibara |
| 5th Author's Affiliation | Nagoya Institute of Technology (NITech) |
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| Speaker | Author-1 |
| Date Time | 2014-04-17 14:50:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2014-8 |
| Volume (vol) | vol.114 |
| Number (no) | no.5 |
| Page | pp.41-44 |
| #Pages | 4 |
| Date of Issue | 2014-04-10 (AP) |
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