Impact of Sea Clutter Nonstationarity on Disturbance Covariance Matrix Estimation and CFAR Detector Performance

Greco, Maria; Stinco, Pietro; Gini, Fulvio; Rangaswamy, Muralidhar

doi:10.1109/taes.2010.5545205

Cited by 69 publications

(36 citation statements)

References 28 publications

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“…This phenomenon has been already observed and explained in [36]. For this reason, the values of P FA are not constant over the entire range, and their spread is larger if the SCM estimate is used and reduced if either the NSCM or FP estimates are employed.…”

Section: False Alarm Regulationmentioning

confidence: 64%

“…For this reason, the values of P FA are not constant over the entire range, and their spread is larger if the SCM estimate is used and reduced if either the NSCM or FP estimates are employed. The SCM estimate is not accurate in the case that the clutter is not Gaussian, whereas the NSCM and FP estimates are more accurate [5,36].…”

Section: False Alarm Regulationmentioning

confidence: 98%

“…This analysis was realized also for the multichannel NAMF, combining the bistatic and monostatic data. In order to evaluate the robustness of the adopted detectors against the timevarying clutter spectra [36], four different values of the normalized Doppler frequency were chosen, i.e. f D = [−0.1, 0, 0.1, 0.2].…”

Section: False Alarm Regulationmentioning

confidence: 99%

“…This is due to the fact that the SCM estimator has good performance if the statistical distribution of the disturbance samples approaches the Gaussian one, whereas the NSCM and FP estimators are accurate also in the case of non-Gaussian clutter [36]. In order to better examine the detection performance, only the heavy-clutter Doppler bin (f D = 0.1) was considered.…”

Section: Detection Performancementioning

confidence: 99%

See 3 more Smart Citations

Multistatic adaptive CFAR detection in non-Gaussian clutter

Palamà

Greco

Gini

2016

EURASIP J. Adv. Signal Process.

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This work addresses the problem of target detection for multistatic radars. We propose an algorithm that is able to keep constant the false alarm rate, when the disturbance samples associated with each receiver-transmitter pair are distributed according to a compound Gaussian model. The performance of the proposed detection algorithm are analysed to assess the impact of clutter diversity on detection performance. The results show that clutter statistical diversity has a strong impact on detection performance. The performance of both single-channel and multichannel detection schemes are evaluated by processing real sea clutter data collected by the NetRAD nodes, in order to evaluate which of the two channels, i.e. the bistatic and monostatic channels, is more favourable for target detection. Furthermore, the gain achieved by using a multistatic detection algorithm is also analysed.

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Section: False Alarm Regulationmentioning

confidence: 64%

Section: False Alarm Regulationmentioning

confidence: 98%

Section: False Alarm Regulationmentioning

confidence: 99%

Section: Detection Performancementioning

confidence: 99%

See 2 more Smart Citations

Multistatic adaptive CFAR detection in non-Gaussian clutter

Palamà

Greco

Gini

2016

EURASIP J. Adv. Signal Process.

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“…More recently, it has been understood that the SIRP model may not always be appropriate when applied to sea clutter, due to nonstationary behaviour of the clutter spectra. This has been investigated by [3,4], looking at the performance of so-called matched filter detectors in real clutter, which do not always achieve the performance predicted by idealised modelling.…”

Section: Introductionmentioning

confidence: 99%

The effects of covariance matrix mismatch on adaptive CFAR performance

Watts

2013

2013 International Conference on Radar

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This paper analyses the CFAR performance of the Normalised Adaptive Matched Filter (NAMF) when the estimate of the covariance matrix used to design the filter does not match the clutter in the cell under test. The analysis results are compared with simulations and the potential effects on practical detectors are investigated using a recently developed model for the non-stationary Doppler spectra of sea clutter.

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