Online clutter estimation using a Gaussian kernel density estimator for multitarget tracking

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Authors
  1. Chen, X.
  2. Tharmarasa, R.
  3. Kirubarajan, T.
  4. McDonald, M.
Corporate Authors
Defence Research and Development Canada, Ottawa Research Centre, Ottawa ON (CAN);McMaster Univ, Hamilton Ont (CAN) Dept of Electrical and Computer Engineering
Abstract
In this study, the spatial distribution of false alarms is assumed to be a non-homogeneous Poisson point (NHPP) process. Then, a new method is developed under the kernel density estimation (KDE) framework to estimate the spatial intensity of false alarms for the multitarget tracking problem. In the proposed method, the false alarm spatial intensity estimation problem is decomposed into two subproblems: (i) estimating the number of false alarms in one scan and (ii) estimating the variation of the intensity function value in the measurement space. Under the NHPP assumption, the only parameter that needs to be estimated for the first subproblem is the mean of false alarm number, and the empirical mean is used here as the maximum likelihood estimate of that parameter. Then, for the second subproblem, an online multivariate local adaptive Gaussian kernel density estimator is proposed. Furthermore, the proposed estimation method is seamlessly integrated with widely used multitarget trackers, like the joint integrated probabilistic data association algorithm and the multiple hypotheses tracking algorithm. Simulation results show that the proposed KDE-based method can provide a better estimate of the false alarm spatial intensity and help the multitarget trackers yield superior performance in scenarios with spatially non-homogeneous false alarms.
Keywords
multitarget tracking;clutter estimation;kernel density;point process
Report Number
DRDC-RDDC-2014-P135 — External Literature
Date of publication
13 Mar 2015
Number of Pages
9
DSTKIM No
CA039998
CANDIS No
801103
Format(s):
Electronic Document(PDF)

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