MAP estimator for target tracking in wireless sensor networks for unknown transmit power

Slavisa Tomic, Marko Beko, Rui Dinis, Milan Tuba, Nebojsa Bacanin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper addresses the target tracking problem, by extracting received signal strength (RSS) and angle of arrival (AoA) information from the received radio signal, in the case where the target transmit power is considered unknown. By combining the radio observations with prior knowledge given by the target transition state model, we apply the maximum a posteriori (MAP) criterion to the marginal posterior distribution function (PDF). However, the derived MAP estimator cannot be solved directly, so we tightly approximate it for small noise power. The target state estimate is then easily obtained at any time step by employing a recursive approach, typical for Bayesian methods. Our simulations confirm the effectiveness of the proposed algorithm, offering good estimation accuracy in all considered scenarios.

Original languageEnglish
Title of host publicationTechnological Innovation for Smart Systems - 8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017, Proceedings
EditorsL. M. Camarinha-Matos , M. Parreira-Rocha, J. Ramezani
Place of PublicationCham
PublisherSpringer
Pages325-334
Number of pages10
ISBN (Electronic)978-3-319-56077-9
ISBN (Print)978-3-319-56076-2
DOIs
Publication statusPublished - 2017
Event8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017 - Costa De Caparica, Portugal
Duration: 3 May 20175 May 2017

Publication series

NameIFIP Advances in Information and Communication Technology
PublisherSpringer
Volume499
ISSN (Print)1868-4238

Conference

Conference8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017
CountryPortugal
CityCosta De Caparica
Period3/05/175/05/17

Keywords

  • Angle of arrival (AoA)
  • Maximum a posteriori (MAP) estimator
  • Received signal strength (RSS)
  • Target tracking

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