Robust CFAR Detector With Ordered Statistic of Sub-Reference Cells in Multiple Target Situations

• Published in: IEEE access Vol. 10; pp. 42750 - 42761
• Main Authors: Jeong, Taehee, Park, Sungyeong, Kim, Jeong-Wook, Yu, Jong-Won
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Clutter; clutter edge; Complexity; Constant false alarm rate; Constant false alarm rate detector; Degradation; Detectors; Doppler effect; False alarms; Image edge detection; multiple target situations; ordered statistic of sub-reference cells; Performance degradation; Radar; Radar detection; Sensors
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2022.3168707

Herein, a robust constant false alarm rate (CFAR) detector with ordered statistic of sub-reference cells (OSS-CFAR) is proposed in multiple target situations. This detector can improve background level estimation and reduce computational complexity using sub-reference cells. The detection performance of the OSS-CFAR detector and of conventional CFAR detectors in multiple target situations are investigated and compared using computer simulations and experimental data with sea clutter. The simulations and experimental results show that the OSS-CFAR detector achieves robust detection performance with low computational complexity, whereas conventional CFAR detectors suffer performance degradation in multiple target situations. At the clutter edge, the OSS-CFAR detector with appropriate parameters achieves an acceptable false alarm rate compared to conventional CFAR detectors.