Abstract
In this paper, a new constant false alarm rate (CFAR) thresholding algorithm which is a generalisation of the switching CFAR (S-CFAR) that takes into account the statistics of the sample in the test cell for reference sample selection is proposed. It employs a composite approach based on the switching CFAR and the order statistic CFAR (OS-CFAR). A mathematical analysis in a homogeneous environment is provided for this detector. The results obtained show that the detection performance of the generalised S-CFAR (GS-CFAR) is improved both in homogenous background and non-homogenous environment caused by interfering targets and clutter edge.
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Finn H.M., Johnson R.S.: Adaptive detection mode with threshold control as function of spatially sampled clutter level estimates. RCA Rev. 29(3), 414–464 (1968)
Hansen, V.G., Sawyers, J.H.: Constant false alarm rate processing in search radars. In: Proceedings of the IEEE International Radar Conference, pp. 325–332 (1973)
Trunk G.V.: Range resolution of targets using automatic detectors. IEEE Trans. Aerosp. Electron. Syst. 14, 750–755 (1978)
Rohling H.: Radar CFAR thresholding in clutter and multiple target situations. IEEE Trans. Aerosp. Electron. Syst. 19, 608–621 (1983)
Gandi P.P., Kassam S.A.: A analysis of CFAR processors in non homogeneous background. IEEE Trans. Aerosp. Electron. Syst. 24, 427–425 (1988)
Viswanathan R., Eftekhari A.: A selection and estimation test for multiple target detection. IEEE Trans. Aerosp. Electron. Syst. 28, 505–519 (1992)
Tan, T., Cao, V.: A CFAR thresholding approach based on test cell statistics. In: Proceedings of the IEEE Radar Conference, Philadelphia (2004)
Tan, T., Cao, V.: A CFAR algorithm for radar detection under severe interference. In: Proc. IEEE Conf. Intelligent Sensors, Sensor Networks & Information (ISSNIP), Melbourne, pp. 167–172 (2004)
Goldman H.: Performance of the excision CFAR detector in the presence of interferences. IEE Proc. Radar Sonar Navig. 137, 163–171 (1990)
Khalighi M.A., Nayebi M.M.: CFAR processor for ESM systems applications. IEE Proc. Radar Sonar Navig. 147, 86–92 (2000)
Kingsley S., Quegan S.: Understanding Radar Systems. McGraw-Hill, New York (1992)
Minkler, G., Minkler, J.: CFAR. Magellan Book Company, Baltimore (1990)
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Tabet, L., Soltani, F. A generalized switching CFAR processor based on test cell statistics. SIViP 3, 265–273 (2009). https://doi.org/10.1007/s11760-008-0075-2
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DOI: https://doi.org/10.1007/s11760-008-0075-2