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Paper Abstract and Keywords
Presentation 2016-11-18 10:05
Localization using simultaneous recordings of electric network frequencies in the Tokyo metropolitan area
Akira Nishimura (Tokyo Univ. Info. Sci.) EA2016-58 EMM2016-64
Abstract (in Japanese) (See Japanese page) 
(in English) This paper addresses a method to estimate an unknown location by
using ENF(electric network frequency)-based indices measured at
seven sites in the Tokyo metropolitan area. This technique can be
the basis of forensic technology that estimates the place of
arbitrary recording from its electric noises. The half-plane
intersection method based on correlation between high-pass ENFs
(above 0.26 Hz) measured at different sites proposed in the previous
research revealed that poor (below 10 %) accuracy of localization,
because of distances between the current measuring sites is ten
times shorter (max. 62.5 km) than the those of the previous
study. Short-term frequency analysis of the fluctuations of the ENF
signals reveals that temporal correlations between the fluctuation
energy in the frequency range of 0.4 Hz to 1.0 Hz obtained at
different sites are inversely correlated to the geographical
distances between the sites. Location estimation using linear
regression between the dissimilarities of spectro-temporal ENFs and
the geographical distances of the anchor sites predicts the location
of a target site with a mean prediction error of approximately 20 to
30 km.
Keyword (in Japanese) (See Japanese page) 
(in English) Electric Network Frequency / fluctuation / analytic signal / nstantaneous frequency / short-term frequency analysis / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 303, EMM2016-64, pp. 61-66, Nov. 2016.
Paper # EMM2016-64 
Date of Issue 2016-11-10 (EA, EMM) 
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 EA2016-58 EMM2016-64

Conference Information
Committee EA EMM  
Conference Date 2016-11-17 - 2016-11-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Compal Hall (Oita) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multimedia Fusion, Content Processing, Multimedia Retrieval, Digital Watermarking, and Related Topics 
Paper Information
Registration To EMM 
Conference Code 2016-11-EA-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Localization using simultaneous recordings of electric network frequencies in the Tokyo metropolitan area 
Sub Title (in English)  
Keyword(1) Electric Network Frequency  
Keyword(2) fluctuation  
Keyword(3) analytic signal  
Keyword(4) nstantaneous frequency  
Keyword(5) short-term frequency analysis  
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1st Author's Name Akira Nishimura  
1st Author's Affiliation Tokyo University of Information Sciences (Tokyo Univ. Info. Sci.)
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Speaker Author-1 
Date Time 2016-11-18 10:05:00 
Presentation Time 25 minutes 
Registration for EMM 
Paper # EA2016-58, EMM2016-64 
Volume (vol) vol.116 
Number (no) no.302(EA), no.303(EMM) 
Page pp.61-66 
#Pages 6 
Date of Issue 2016-11-10 (EA, EMM) 

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