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Paper Abstract and Keywords
Presentation 2023-08-25 09:30
Distance correction of X-band radar by laser lidar
Tomoyuki Uehara, Shuji Sayama, Tsuji Kenichiro (NDA) OFT2023-12
Abstract (in Japanese) (See Japanese page) 
(in English) Radars are used to detect ships, structures, drones. Radars installed on ships and on land radars are placed on top of ships or on land to monitor the position of ships and land for defense applications such as Aegis systems etc. Radar emits microwaves toward an object and measures the distance when the microwave is reflected from the object. Because it uses high-power microwaves with longer wavelengths than visible light, it can detect distant objects. A general radar is a pulse radar, which emits radio waves from a transmitter and receives reflected waves from a receiver. Transmitter performance is determined by frequency, output power, pulse width, and pulse repetition frequency. However, known uncertainties such as height differences and clutter between the radar and the object being measured can introduce errors of tens of meters. One of the largest errors is the offset distance. This error is caused by the radar body, the waveguide length of the measuring instrument, the software, and so on. Therefore, in this research, we aim to improve the offset distance error of radar distance measurement by using distance measurement using laser light (laser lidar). Lidar is based on the same principle as radar, but uses light instead of radio waves. By using short-pulse light such as a fiber laser using an optical fiber, accurate directivity and narrow beam can be used for distance measurement. For this reason, lidar is used in some aircraft and satellite-based remote sensing. Therefore, in this study, we describe the correction of the offset distance error, which has one of the largest radar uncertainty, using a portable lidar using a laser.
Keyword (in Japanese) (See Japanese page) 
(in English) lidar / radar / calibration / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 164, OFT2023-12, pp. 17-20, Aug. 2023.
Paper # OFT2023-12 
Date of Issue 2023-08-17 (OFT) 
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 OFT2023-12

Conference Information
Committee OFT OCS LSJ  
Conference Date 2023-08-24 - 2023-08-25 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To OFT 
Conference Code 2023-08-OFT-OCS-LSJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Distance correction of X-band radar by laser lidar 
Sub Title (in English)  
Keyword(1) lidar  
Keyword(2) radar  
Keyword(3) calibration  
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1st Author's Name Tomoyuki Uehara  
1st Author's Affiliation National Defense Academy of Japan (NDA)
2nd Author's Name Shuji Sayama  
2nd Author's Affiliation National Defense Academy of Japan (NDA)
3rd Author's Name Tsuji Kenichiro  
3rd Author's Affiliation National Defense Academy of Japan (NDA)
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Speaker Author-1 
Date Time 2023-08-25 09:30:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2023-12 
Volume (vol) vol.123 
Number (no) no.164 
Page pp.17-20 
#Pages 4 
Date of Issue 2023-08-17 (OFT) 

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