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Adaptive multiaspect target classification and detection with hidden Markov models

Publication ,  Journal Article
Ji, S; Liao, X; Carin, L
Published in: IEEE Sensors Journal
October 1, 2005

Target detection and classification are considered based on backscattered signals observed from a sequence of target-sensor orientations, with the measurements performed as a function of orientation (angle) at a fixed range. The theory of optimal experiments is applied to adaptively optimize the sequence of target-sensor orientations considered. This is motivated by the fact that if fewer, better-chosen measurements are used then targets can be recognized more accurately with less time and expense. Specifically, based on the previous sequence of observations Ot = {O1,..., Ot}, the technique determines what change in relative target-sensor orientation Δθt+1 is optimal for performing measurement t + 1, to yield observation Ot+1. The target is assumed distant or hidden, and, therefore, the absolute target-sensor orientation is unknown. We detail the adaptive-sensing algorithm, employing a hidden Markov model representation of the multiaspect scattered fields, and example classification and detection results are presented for underwater targets using acoustic scattering data. © 2005 IEEE.

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Published In

IEEE Sensors Journal

DOI

ISSN

1530-437X

Publication Date

October 1, 2005

Volume

5

Issue

5

Start / End Page

1035 / 1042

Related Subject Headings

  • Analytical Chemistry
  • 40 Engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0205 Optical Physics
 

Citation

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Ji, S., Liao, X., & Carin, L. (2005). Adaptive multiaspect target classification and detection with hidden Markov models. IEEE Sensors Journal, 5(5), 1035–1042. https://doi.org/10.1109/JSEN.2005.847936
Ji, S., X. Liao, and L. Carin. “Adaptive multiaspect target classification and detection with hidden Markov models.” IEEE Sensors Journal 5, no. 5 (October 1, 2005): 1035–42. https://doi.org/10.1109/JSEN.2005.847936.
Ji S, Liao X, Carin L. Adaptive multiaspect target classification and detection with hidden Markov models. IEEE Sensors Journal. 2005 Oct 1;5(5):1035–42.
Ji, S., et al. “Adaptive multiaspect target classification and detection with hidden Markov models.” IEEE Sensors Journal, vol. 5, no. 5, Oct. 2005, pp. 1035–42. Scopus, doi:10.1109/JSEN.2005.847936.
Ji S, Liao X, Carin L. Adaptive multiaspect target classification and detection with hidden Markov models. IEEE Sensors Journal. 2005 Oct 1;5(5):1035–1042.

Published In

IEEE Sensors Journal

DOI

ISSN

1530-437X

Publication Date

October 1, 2005

Volume

5

Issue

5

Start / End Page

1035 / 1042

Related Subject Headings

  • Analytical Chemistry
  • 40 Engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0205 Optical Physics