A Low Complexity Two-Stage Target Detection Scheme for Resource Limited Radar Systems
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, vol.49, no.1, pp.594-601, 2013 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 49 Issue: 1
- Publication Date: 2013
- Doi Number: 10.1109/taes.2013.6404122
- Journal Name: IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.594-601
- Middle East Technical University Affiliated: Yes
Abstract
A two-stage detector is proposed to accommodate high computational load requirements of modern radar systems. The first stage of the proposed system is a low-complexity detector that operates at an unusually high false alarm probability value around 1/10. This stage is to prescreen and eliminate some of the test cells with relatively few operations. The second stage operates only on the cells passing the prescreening stage and implements a high-complexity detector at a desired system false alarm rate. Due to the detector cascade, the second stage has a large amount of computational load reduction, on the order of 10 folds, in comparison with the single-stage systems. The mathematical analysis of the described two-stage detector is presented, and the relations for the false alarm and detection probability are derived. The numerical results show that it is possible to achieve a significant computational load reduction at a negligible performance loss with the proper selection of detector parameters.