Node Localization in Unsynchronized Time of Arrival Sensor Networks
Författare
Summary, in English
problem of localizing a set of receivers and directions
from transmitters placed far from the receivers,
measuring unsynchronized time of arrival data. The
same problem is present in node localization of microphone
and antenna arrays. The solution algorithm using
5 receivers and 9 transmitters is extended to the
overdetermined case in a straightforward manner. Degenerate
cases are shown to be when i) the measurement
matrix has rank 4 or less or ii) the directions from
the transmitters to the receivers lie on an intersection
between the unit sphere and another quadric surface.
In simulated experiments we explore how sensitive the
solution is with respect to different degrees of far field
approximations of the transmitters and with respect to
noise in the data. Using real data we get a reconstruction
of the receivers with a relative error of 14%.
Avdelning/ar
- Matematik LTH
- Matematikcentrum
- Mathematical Imaging Group
- ELLIIT: the Linköping-Lund initiative on IT and mobile communication
Publiceringsår
2012
Språk
Engelska
Sidor
2042-2046
Publikation/Tidskrift/Serie
21st International Conference on Pattern Recognition (ICPR 2012), Proceedings of
Dokumenttyp
Konferensbidrag
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Mathematics
Nyckelord
- Unsynchronized Time-of-Arrival
- sensor networks
Conference name
21st International Conference on Pattern Recognition (ICPR 2012)
Conference date
2012-11-11 - 2012-11-15
Conference place
Tsukuba, Japan
Status
Published
Forskningsgrupp
- Mathematical Imaging Group
ISBN/ISSN/Övrigt
- ISBN: 978-4-9906441-1-6