Abstract
This paper deals with the exact detection analysis of the Ordered-Statistic(OS) processor along with OS Greatest Of(OSGO) and OS Smallest Of(OSSO) modified versions, for M postdetection integrated pulses when the operating environment is nonhomogeneous. Analytical results are presented in multiple-target case as well as in regions of clutter power transitions. The primary and the secondary interfering targets are assumed to be fluctuating in accordance with the SWII target fluctuation model. As the number of noncoherently integrated pulses increases, lower threshold values and consequently better detection performances are obtained in both homogeneous and multiple target background models. However, the false alarm rate performance of OSSO-CFAR(Constant False Alarm Rate) scheme at clutter edges is worsen with increasing the postdetection integrated pulses. As predicted, the OSGO-CFAR detector accommodates the presence of spurious targets in the reference window, given that their number is within its allowable range in each local window, and controls the rate of false alarm when the contents of the reference cells have clutter boundaries.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. M. Finn, R. S. Johnson, Adaptive detection mode with threshold control as a function of spatially sampled clutter level estimates, RCA Review, 29(1968)9, 414–463.
V. G. Hansen, Constant false alarm rate processing in search radars, Proceedings of the IEEE 1973 International Radar Conference, London, 1973, 325–332.
V. G. Hansen, J. H. Sawyers, Detectability loss due to greatest-of selection in a cell-averaging CFAR, IEEE Trans. on Aerospace and Electronic Systems, AES-16(1980)1, 115–118.
H. Rohling, Radar CFAR thresholding in clutter and multiple target situations, IEEE Trans. on Aerospace and Electronic Systems, AES-19(1983)4, 608–621.
S. Blake, OS-CFAR theory for multiple targets and nonuniform clutter, IEEE Trans. on Aerospace and Electronic Systems, AES-24(1988)6, 785–790.
P. P. Gandhi, S. A. Kassam, Analysis of CFAR processors in nonhomogeneous backgrounds, IEEE Trans. on Aerospace and Electronic Systems, AES-24(1988)4, 427–445.
A. R. Elias-Fuste, M. G. Mercado, E. R. Davo, Analysis of some modified order statistic CFAR: OSGO- and OSSO-CFAR, IEEE Trans. on Aerospace and Electronic Systems, AES-26(1990)1, 197–202.
J. A. Ritcey, J. L. Hines, Performance of the max family of order-statistic CFAR detectors, IEEE Trans. on Aerospace and Electronic Systems, AES-27(1991)1, 48–57.
C. H. Lim, H. S. Lee, Performance of order statistics CFAR detector with noncoherent integration in homogeneous situations, IEE Radar, Sonar Navig., 140(1993)5, 291–296.
You He, Performance of some generalized modified order-statistics CFAR detectors with automatic censoring technique in multiple target situations, IEE Proc.-Radar, Sonar Navig., 141(1994)4, 205–212.
M. B. El Mashade, Performance analysis of modified ordered statistics CFAR processors in nonhomogeneous environments, Signal Processing “ELSEVIER”, 41(1995)3, 379–389.
M. B. El Mashade, Analysis of the censored mean level CFAR processor in multiple target and nonuniform clutter, IEE Radar, Sonar Navig., 142(1995)5, 259–266.
M. B. El Mashade, Multipulse analysis of the generalized trimmed mean CFAR detector in nonhomogeneous background environments, AEU, 52(1998)4, 249–260.
M. B. El Mashade, Analysis of adaptive radar systems processing M-sweeps in target multiplicity and clutter boundary environments, Signal Processing “ELSEVIER”, 67(1998)3, 307–329.
Author information
Authors and Affiliations
About this article
Cite this article
El Mashade, M.B. Exact analysis of OS modified versions with noncoherent integration. J. of Electron.(China) 21, 265–277 (2004). https://doi.org/10.1007/BF02687882
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02687882