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A CFAR Adaptive Subspace Detector Based on a Single Observation in System-Dependent Clutter Background

Lei, Shiwen LU ; Zhao, Zhiqin; Nie, Zaiping and Liu, Qing-Huo (2014) In IEEE Transactions on Signal Processing 62(20). p.5260-5269
Abstract
In this paper, the problem of detecting target in system-dependent clutter (SDC) background with a single observation from the test cell is researched. Classical detectors, such as the generalized likelihood ratio detectors (GLRDs) and the adaptive matched filters (AMFs), etc., usually deal with the clutter and the noise as a whole. The low rank detectors (LRDs) make use of the low rank property of the clutter to improve the detection performance. However, the performance of LRDs degrades when the signal is not orthogonal with respect to (w.r.t.) the clutter. In this paper, an adaptive subspace detector for SDC (SDC-ASD) background which deals with the clutter and the noise separately is proposed. The SDC-ASD designs the test statistic by... (More)
In this paper, the problem of detecting target in system-dependent clutter (SDC) background with a single observation from the test cell is researched. Classical detectors, such as the generalized likelihood ratio detectors (GLRDs) and the adaptive matched filters (AMFs), etc., usually deal with the clutter and the noise as a whole. The low rank detectors (LRDs) make use of the low rank property of the clutter to improve the detection performance. However, the performance of LRDs degrades when the signal is not orthogonal with respect to (w.r.t.) the clutter. In this paper, an adaptive subspace detector for SDC (SDC-ASD) background which deals with the clutter and the noise separately is proposed. The SDC-ASD designs the test statistic by replacing the signal and the clutter covariance matrix with their maximum likelihood estimations (MLEs). Its theoretical false alarm probability and detection probability are analytically deduced. Analytical results show that the test statistic has the form of non-central distribution. Besides, it is shown that the SDC-ASD has constant false alarm rate (CFAR) performance w.r.t. the clutter and the noise. Numerical experiments are provided to validate the detection performance of the SDC-ASD in dealing with the target detection in SDC background. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Adaptive subspace detector (ASD), constant false alarm rate (CFAR), system-dependent clutter (SDC) background, target detection.
in
IEEE Transactions on Signal Processing
volume
62
issue
20
pages
5260 - 5269
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:84959575582
ISSN
1053-587X
DOI
10.1109/TSP.2014.2348952
language
English
LU publication?
yes
id
a0530fb1-fe8e-49ae-9f9d-a26445e03d9f (old id 8410104)
date added to LUP
2016-02-29 16:03:23
date last changed
2017-10-01 03:19:21
@article{a0530fb1-fe8e-49ae-9f9d-a26445e03d9f,
  abstract     = {In this paper, the problem of detecting target in system-dependent clutter (SDC) background with a single observation from the test cell is researched. Classical detectors, such as the generalized likelihood ratio detectors (GLRDs) and the adaptive matched filters (AMFs), etc., usually deal with the clutter and the noise as a whole. The low rank detectors (LRDs) make use of the low rank property of the clutter to improve the detection performance. However, the performance of LRDs degrades when the signal is not orthogonal with respect to (w.r.t.) the clutter. In this paper, an adaptive subspace detector for SDC (SDC-ASD) background which deals with the clutter and the noise separately is proposed. The SDC-ASD designs the test statistic by replacing the signal and the clutter covariance matrix with their maximum likelihood estimations (MLEs). Its theoretical false alarm probability and detection probability are analytically deduced. Analytical results show that the test statistic has the form of non-central distribution. Besides, it is shown that the SDC-ASD has constant false alarm rate (CFAR) performance w.r.t. the clutter and the noise. Numerical experiments are provided to validate the detection performance of the SDC-ASD in dealing with the target detection in SDC background.},
  author       = {Lei, Shiwen and Zhao, Zhiqin and Nie, Zaiping and Liu, Qing-Huo},
  issn         = {1053-587X},
  keyword      = {Adaptive subspace detector (ASD),constant false alarm rate (CFAR),system-dependent clutter (SDC) background,target detection.},
  language     = {eng},
  number       = {20},
  pages        = {5260--5269},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Signal Processing},
  title        = {A CFAR Adaptive Subspace Detector Based on a Single Observation in System-Dependent Clutter Background},
  url          = {http://dx.doi.org/10.1109/TSP.2014.2348952},
  volume       = {62},
  year         = {2014},
}