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| Presentation | 2010-06-21 15:45 Signal Analysis by Mixture Model for Doppler Weather Radar Satoshi Kon, Takeshi Oya, Toshihisa Tanaka (Tokyo Univ. of Agr and Tech.)  CAS2010-14 VLD2010-24 SIP2010-35 CST2010-14 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The weather echo is a signal reflected at the observation target. The ground clutter is from the ground. Therefore, we need to remove the ground clutter. To this end, Moving Target Indicator (MTI), which suppresses the low frequency spectra of the echo, is often used to remove the ground clutter. However, this MTI can remove components in the weather echo that exists in a low frequency band. To avoid this problem, we propose to model the spectra of the echos with the mixture of density functions. We employ Expectation Maximization (EM) algorithm for a penalized likelihood function to estimate the parameters of the mixed density function. We show by experiments that the proposed method works well in estimating the velocity, the velocity width and the power of the weather echo even when the weather echo exists in a lower frequency part. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ground clutter / weather echo / mixture density function / penalized EM algorithm / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 88, SIP2010-35, pp. 75-80, June 2010. | |
| Paper # | SIP2010-35 | |
| Date of Issue | 2010-06-14 (CAS, VLD, SIP, CST) | |
| 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 | CAS2010-14 VLD2010-24 SIP2010-35 CST2010-14 |
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| Conference Information | |
| Committee | CAS MSS VLD SIP |
| Conference Date | 2010-06-21 - 2010-06-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kitami Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SIP |
| Conference Code | 2010-06-CAS-CST-VLD-SIP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Signal Analysis by Mixture Model for Doppler Weather Radar |
| Sub Title (in English) | |
| Keyword(1) | ground clutter |
| Keyword(2) | weather echo |
| Keyword(3) | mixture density function |
| Keyword(4) | penalized EM algorithm |
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| 1st Author's Name | Satoshi Kon |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology (Tokyo Univ. of Agr and Tech.) |
| 2nd Author's Name | Takeshi Oya |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology (Tokyo Univ. of Agr and Tech.) |
| 3rd Author's Name | Toshihisa Tanaka |
| 3rd Author's Affiliation | Tokyo University of Agriculture and Technology (Tokyo Univ. of Agr and Tech.) |
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| Speaker | Author-1 |
| Date Time | 2010-06-21 15:45:00 |
| Presentation Time | 25 minutes |
| Registration for | SIP |
| Paper # | CAS2010-14, VLD2010-24, SIP2010-35, CST2010-14 |
| Volume (vol) | vol.110 |
| Number (no) | no.86(CAS), no.87(VLD), no.88(SIP), no.89(CST) |
| Page | pp.75-80 |
| #Pages | 6 |
| Date of Issue | 2010-06-14 (CAS, VLD, SIP, CST) |
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