| Presentation | 2016-11-18 Localization using simultaneous recordings of electric network frequencies in the Tokyo metropolitan area Akira Nishimura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Electric Network Frequency / fluctuation / analytic signal / nstantaneous frequency / short-term frequency analysis |
| Paper # | EA2016-58,EMM2016-64 |
| Date of Issue | 2016-11-10 (EA, EMM) |
| Conference Information | |
| Committee | EA / EMM |
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| Conference Date | 2016/11/17(2days) |
| 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 |
| Chair | Mitsunori Mizumachi(Kyushu Inst. of Tech.) / Akinori Ito(Tohoku Univ.) |
| Vice Chair | Yoichi Haneda(Univ. of Electro-Comm.) / Suehiro Shimauchi(NTT) / Masaki Kawamura(Yamaguchi Univ.) / Hirohisa Hioki(Kyoto Univ.) |
| Secretary | Yoichi Haneda(KDDI R&D Labs.) / Suehiro Shimauchi(Akita Pref. Univ.) / Masaki Kawamura(Nagasaki Univ.) / Hirohisa Hioki(Osaka Pref. Univ.) |
| Assistant | Shigeto Takeoka(Shizuoka Inst. of Science and Tech.) / TREVINO Jorge(Tohoku Univ.) / Rui Shogenji(Shizuoka Univ.) / Masaaki Fujiyoshi(Tokyo Metropolitan Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Technical Committee on Enriched MultiMedia |
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| Language | JPN |
| 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 |
| 1st Author's Name | Akira Nishimura |
| 1st Author's Affiliation | Tokyo University of Information Sciences(Tokyo Univ. Info. Sci.) |
| Date | 2016-11-18 |
| Paper # | EA2016-58,EMM2016-64 |
| Volume (vol) | vol.116 |
| Number (no) | EA-302,EMM-303 |
| Page | pp.pp.61-66(EA), pp.61-66(EMM), |
| #Pages | 6 |
| Date of Issue | 2016-11-10 (EA, EMM) |