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| Presentation | 2022-08-22 14:30 Doppler tolerance of signals generated by combining multiple linear chirp signals and M-sequence Shota Urakawa, Eri Sato, Takanobu Kuroyama, Hanako Ogasawara, Kazuyoshi Mori (NDA)  US2022-31 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A multi-source Multi Static Sonar (MSS) of which the detection volume is larger than that of the conventional MSS has been researched. The authors proposed the Varying Frequency Modulation Division Multiplexing (VFMDM) method as a multiplexing method to prevent interference of transmitted signals of a multi-source MSS. VFMDM-signals are generated by combinations multiple linear frequency modulated signals (LFM), and enables to identify a source. In this report, for the purpose of evaluating the difference in Doppler tolerance due to the combination of LFM-up and LFM-down, the ambiguity function of the transmitted signal generated by the VFMDM method is obtained, and the main lobe level when the Doppler frequency changes is calculated. A simulation test was conducted as an evaluation item. As a result, it was suggested that the combination did not affect the identification performance so much that it had to be considered in the design. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Underwater Acoustic / Active Sonar / Signal Processing / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 154, US2022-31, pp. 13-18, Aug. 2022. | |
| Paper # | US2022-31 | |
| Date of Issue | 2022-08-15 (US) | |
| ISSN | 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 | US2022-31 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2022-08-22 - 2022-08-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Tech (Ookayama Campus) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Underwater acoustics, Ultrasonics, etc. |
| Paper Information | |
| Registration To | US |
| Conference Code | 2022-08-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Doppler tolerance of signals generated by combining multiple linear chirp signals and M-sequence |
| Sub Title (in English) | |
| Keyword(1) | Underwater Acoustic |
| Keyword(2) | Active Sonar |
| Keyword(3) | Signal Processing |
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| 1st Author's Name | Shota Urakawa |
| 1st Author's Affiliation | National Defense Academy (NDA) |
| 2nd Author's Name | Eri Sato |
| 2nd Author's Affiliation | National Defense Academy (NDA) |
| 3rd Author's Name | Takanobu Kuroyama |
| 3rd Author's Affiliation | National Defense Academy (NDA) |
| 4th Author's Name | Hanako Ogasawara |
| 4th Author's Affiliation | National Defense Academy (NDA) |
| 5th Author's Name | Kazuyoshi Mori |
| 5th Author's Affiliation | National Defense Academy (NDA) |
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| Speaker | Author-1 |
| Date Time | 2022-08-22 14:30:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2022-31 |
| Volume (vol) | vol.122 |
| Number (no) | no.154 |
| Page | pp.13-18 |
| #Pages | 6 |
| Date of Issue | 2022-08-15 (US) |
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