Detection in Gamma-Distributed Nonhomogeneous Backgrounds
- Resource Type
- Periodical
- Authors
- Magraner, Eric; Bertaux, Nicolas; Refregier, Philippe
- Source
- IEEE Transactions on Aerospace and Electronic Systems IEEE Trans. Aerosp. Electron. Syst. Aerospace and Electronic Systems, IEEE Transactions on. 46(3):1127-1139 Jul, 2010
- Subject
- Aerospace
Robotics and Control Systems
Signal Processing and Analysis
Communication, Networking and Broadcast Technologies
Gamma ray detection
Gamma ray detectors
Radar detection
Object detection
Testing
Working environment noise
Background noise
Probability
Fluctuations
Radar clutter
- Language
- ISSN
- 0018-9251
1557-9603
2371-9877
We propose a new technique for target detection in RADAR range-Doppler maps in the presence of nonhomogeneous backgrounds with gamma-distributed fluctuations. This technique is based on a cell-averaging (CA) constant false alarm rate (CFAR) detection test for which the ratio threshold and the set of values involved in the detection test are adaptively optimized in order to improve the false alarm regulation and the detection probability in nonhomogeneous backgrounds. This technique is compared with standard detection techniques on a synthetic range-Doppler map which demonstrates the relevance of the proposed approach in nonhomogeneous gamma-distributed backgrounds.