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Mathematical Problems in Engineering
Volume 2014, Article ID 615704, 7 pages
Research Article

Performance Analysis of an Environmental Adaptive CFAR Detector

School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 702-701, Republic of Korea

Received 25 February 2014; Accepted 26 April 2014; Published 14 May 2014

Academic Editor: Massimo Scalia

Copyright © 2014 Sung Won Hong and Dong Seog Han. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The constant false alarm rate (CFAR) is a detection algorithm that is generally used in radar or sonar systems, but its performance depends greatly on the environment. This means that the detection performance cannot be satisfied with only a single CFAR detector. This paper evaluates mathematically a proposed environmental adaptive (EA) CFAR detector. The proposed CFAR detector selects an optimal CFAR detector depending on the environment. Computer simulations validate the mathematical analysis and robustness of the detector in homogeneous and nonhomogeneous backgrounds.