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| Presentation | 2013-08-22 15:50 Ranging Experiments for Moving Water-Surfaces and its Depth Tatsuya Yoshii, Yoshiaki Yamabayashi (Chitose Inst. of Science and Tech.)  OCS2013-40 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We have already reported water-surface ranging techniques for short-range optical altimeter to be used by seaplanes for their safety landing. So far we could successfully measure the distance (< 10 m) to a stationary water surface with centimeter accuracy. We launched and collimated 1.55㎛-wavelength OTDR pulses into the air, and coupled the retro-reflection back into the feeder fiber. In order to apply the technique to wavy surface, we tried to expand the collimeter beam from 2 mmφto 5 mmφ, and could successfully sence a disturbed water surface in a ultrasonic cleaner basin. We also tried to measure a water-depth by ranging the bottom of the vessel (≦22 cm). We used a commercially available visible laser range-finder of 637 nm wavelength. As pouring water into the vessel, the nominal distance increased due to its refractive index. Resultantly, we could calculate the depth from the nominal distance and the index value (n = 1.33). | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Optical measurement / OTDR / Optical pulse / Measurement water-depth / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 182, OCS2013-40, pp. 23-26, Aug. 2013. | |
| Paper # | OCS2013-40 | |
| Date of Issue | 2013-08-15 (OCS) | |
| 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 | OCS2013-40 |
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| Conference Information | |
| Committee | OFT OCS |
| Conference Date | 2013-08-22 - 2013-08-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OCS |
| Conference Code | 2013-08-OFT-OCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Ranging Experiments for Moving Water-Surfaces and its Depth |
| Sub Title (in English) | |
| Keyword(1) | Optical measurement |
| Keyword(2) | OTDR |
| Keyword(3) | Optical pulse |
| Keyword(4) | Measurement water-depth |
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| 1st Author's Name | Tatsuya Yoshii |
| 1st Author's Affiliation | Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.) |
| 2nd Author's Name | Yoshiaki Yamabayashi |
| 2nd Author's Affiliation | Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.) |
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| Speaker | Author-1 |
| Date Time | 2013-08-22 15:50:00 |
| Presentation Time | 25 minutes |
| Registration for | OCS |
| Paper # | OCS2013-40 |
| Volume (vol) | vol.113 |
| Number (no) | no.182 |
| Page | pp.23-26 |
| #Pages | 4 |
| Date of Issue | 2013-08-15 (OCS) |
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