Combatting inherent vulnerabilities of CFAR algorithms and a new robust CFAR design
Bowman, Patrick J.
MetadataShow full item record
A current trend in radar technology is automatic detection and tracking systems. An integral part of these automatic systems is the CFAR (constant False Alarm Rate) detector. A CFAR detector is the signal process algorithm that controls the rate at which target detections are falsely declared. Given the current state of radar technology, CFAR algorithms are necessary elements of any automatic radar system. Unfortunately, CFAR systems are inherently vulnerable to degradation caused by large clutter edges multiple targets and jamming environments. This thesis presents eight popular and studied CFAR architectures. A comprehensive review of each system's structure, analysis and performance is detailed. Also the performance of each CFAR processor for two different inphase (1) and quadrature (Q) detectors: envelope approximation detector and the square law detector are compared numerically. In addition, each system is comprehensively compared to one another in the troublesome environments mention above. This thesis continues with the development of an original CFAR architecture, the excision greatest-of (EXGO). Although more complex, this processor is shown to be more robust than the other established techniques particularly in the presence of clutter edges, multiple targets, and electronic countermeasures (ECM) environments
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Spread spectrum signal characteristic estimation using exponential averaging and an ad-hoc chip rate estimator Weber, John Baltzer (Monterey California. Naval Postgraduate School, 2007-03);This dissertation investigates two methods of spread spectrum (SS) signal characteristic estimation for the two principle types of SS systems, frequency-hopped (FH) and direct sequence SS. The exponential averaging detector ...
Ryzhikov, V.; Grinyov, B.; Piven, L.; Onyshchenko, G.; Sidletskiy, O.; Naydenov, S.; Pochet, T.; Smith, C. (IEEE, 2015-07-01);It is known that solid-state scintillators can be used for detection of both gamma radiation and neutron flux. In the past, neutron detection efficiencies of such solid-state scintillators did not exceed 5-7%. At the same ...
Farren, Merritt C.; Phillips, Charles A. (Monterey, California: U.S. Naval Postgraduate School, 1960);Sampled-data control systems generally have fixed sampling frequencies which must be set high enough to give satisfactory performance for all anticipated conditions, A study is made here of an adaptive system which ...