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Paper Abstract and Keywords
Presentation 2021-11-12 15:10
Development of a new low frequency GPR system for scanning huge structures
Anwer Sayed, Motoyuki Sato (CNEAS) SANE2021-60
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents a new low frequency (20MHz) radar system for scanning the huge structures of Pyramid in Egypt. A new compact antenna with Bowtie shape geometry is developed for Tx and Rx sides. A gain of 2 dBi is achieved for the antenna system. A proper feeding structure is deigned and fabricated to prohibit the flowing of the current to the outer part of the coaxial cables. The synchronization between Tx and Rx is accomplished for first time using optical link. The optical link consists of Electrical/Optical (E/O) modulator, optical cable, and Optical/electrical demodulator (O/E). The optical link provides a 5 dB gain. In addition, a low noise power amplifier with 25 dB gain is utilized to enhance the system performance. The LNA performance is evaluated experimentally at both Tx and Rx sides which shows better results at the Tx side. The developed GPR system has been verified by real measurements and shows reliable results. The system developed in this work is intended to be used in scanning the great Giza pyramid, which located in Giza, Egypt. The simulations are carried out using a commercial simulator. To validate our proposed GPR system, the prototype of is installed in a controlled environment and in operative conditions during the static test.
Keyword (in Japanese) (See Japanese page) 
(in English) Pyramid / GPR / Bowtie antenna / Optical link / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 236, SANE2021-60, pp. 149-154, Nov. 2021.
Paper # SANE2021-60 
Date of Issue 2021-11-04 (SANE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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)
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Conference Information
Committee SANE  
Conference Date 2021-11-11 - 2021-11-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ICSANE2021/Workshop on subsurface electromagnetic measurement 
Paper Information
Registration To SANE 
Conference Code 2021-11-SANE 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of a new low frequency GPR system for scanning huge structures 
Sub Title (in English)  
Keyword(1) Pyramid  
Keyword(2) GPR  
Keyword(3) Bowtie antenna  
Keyword(4) Optical link  
1st Author's Name Anwer Sayed  
1st Author's Affiliation Center for Northeast Asian Studies, Tohoku University (CNEAS)
2nd Author's Name Motoyuki Sato  
2nd Author's Affiliation Center for Northeast Asian Studies, Tohoku University (CNEAS)
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Date Time 2021-11-12 15:10:00 
Presentation Time 20 minutes 
Registration for SANE 
Paper # SANE2021-60 
Volume (vol) vol.121 
Number (no) no.236 
Page pp.149-154 
Date of Issue 2021-11-04 (SANE) 

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