Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Feasibility Study on Intra-Grid Location Estimation Using Power ENF
  Signals   The Electric Network Frequency (ENF) is a signature of power distribution
networks that can be captured by multimedia recordings made in areas where
there is electrical activity. This has led to an emergence of several forensic
applications based on the use of the ENF signature. Examples of such
applications include estimating or verifying the time-of-recording of a media
signal and inferring the power grid associated with the location in which the
media signal was recorded. In this paper, we carry out a feasibility study to
examine the possibility of using embedded ENF traces to pinpoint the
location-of-recording of a signal within a power grid. In this study, we
demonstrate that it is possible to pinpoint the location-of-recording to a
certain geographical resolution using power signal recordings containing strong
ENF traces. To this purpose, a high-passed version of an ENF signal is
extracted and it is demonstrated that the correlation between two such signals,
extracted from recordings made in different geographical locations within the
same grid, decreases as the distance between the recording locations increases.
We harness this property of correlation in the ENF signals to propose
trilateration based localization methods, which pinpoint the unknown location
of a recording while using some known recording locations as anchor locations.
We also discuss the challenges that need to be overcome in order to extend this
work to using ENF traces in noisier audio/video recordings for such fine
localization purposes.

6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat