CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter

Kun ZHANG; Penglang SHUI

doi:10.11999/JEIT200644

Volume 43 Issue 3

Mar. 2021

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Kun ZHANG, Penglang SHUI. CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter[J]. Journal of Electronics & Information Technology, 2021, 43(3): 523-530. doi: 10.11999/JEIT200644

Citation:

Kun ZHANG, Penglang SHUI. CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter[J]. Journal of Electronics & Information Technology, 2021, 43(3): 523-530. doi: 10.11999/JEIT200644

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CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter

doi: 10.11999/JEIT200644

Kun ZHANG^,,
Penglang SHUI

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61671357)

Received Date: 2020-07-24
Rev Recd Date: 2021-01-20

Available Online: 2021-01-29

Publish Date: 2021-03-22

Abstract

Abstract

In this paper, under the generalized Pareto distributed sea clutter, the Constant False Alarm Rate (CFAR) properties of Cell-Averaging (CA) and Order-Statistic (OS) non-coherent detectors are studied, the false alarm probability formulas of the two non-coherent detectors are derived, and it is found that the two detectors are CFAR with respect to the scale parameter of sea clutter. However, the two detectors do not have CFAR with respect to speckle covariance matrix structure and shape parameter of sea clutter. In order to ensure CFAR detection in the overall scene, the correlated sea clutter is decorrelated via whitening and the detection threshold matching the shape parameters of sea clutter, number of accumulated pulses, and number of reference cells is applied via lookup tables. In this case, the experimental results show that the two non-coherent detectors can ensure CFAR in the overall scene.
- Generalized Pareto distributed,
- Non-coherent detectors,
- Constant False Alarm Rate (CFAR),
- Sea clutter

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References(19)

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