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| Presentation | 2017-10-05 15:20 Pulse compression of parametric sound using M-sequence phase modulation Riku Nishioka, Hideyuki Nomura (UEC)  US2017-61 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The application of pulse compression to parametric ultrasound using chirp modulation have been proposed to realize low-frequency ultrasound imaging. However, the application of chirp modulation to the parametric ultrasound generates sidelobes which affect signal-to-noise ratio (SNR) of image quality. In the present study, maximal length sequential (Msequential) modulation is applied to parametric ultrasound to improve the SNR of parametric ultrasound imaging. The pulse widths of pulse compressions of chirp-modulated and M-sequential modulated parametric ultrasounds directly received in water were agree well with the theoretical value. In addition, the increase of the order of M-sequential code decrease time sidelobe level of pulse compressed signal. Obtained images of a single brass rod in water indicated that although the application of chirp modulation showed time sidelobes after mainloabes, that of sixth order of M-sequential modulation reduced sidelobes around mainlobes and improved the image quality. These results suggest that the application of M-sequential modulation to the pulse compression is a useful method to improve an image quality even in low-frequency ultrasound imaging using parametric ultrasound. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Parametric ultrasound / M-sequence modulation / Pulse compression / Time sidelobe / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 227, US2017-61, pp. 27-32, Oct. 2017. | |
| Paper # | US2017-61 | |
| Date of Issue | 2017-09-28 (US) | |
| 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 | US2017-61 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2017-10-05 - 2017-10-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | US |
| Conference Code | 2017-10-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Pulse compression of parametric sound using M-sequence phase modulation |
| Sub Title (in English) | |
| Keyword(1) | Parametric ultrasound |
| Keyword(2) | M-sequence modulation |
| Keyword(3) | Pulse compression |
| Keyword(4) | Time sidelobe |
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| 1st Author's Name | Riku Nishioka |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Hideyuki Nomura |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
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| Speaker | Author-1 |
| Date Time | 2017-10-05 15:20:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2017-61 |
| Volume (vol) | vol.117 |
| Number (no) | no.227 |
| Page | pp.27-32 |
| #Pages | 6 |
| Date of Issue | 2017-09-28 (US) |
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