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access icon free Definition of adaptive detection threshold under employment of the generalised detector in radar sensor systems

© The Institution of Engineering and Technology
Received 07/06/2013, Accepted 22/11/2013, Revised 17/08/2013, Published 16/07/2014

An adaptive detection threshold under employment of the generalised detector (GD) in radar sensor systems is defined. GD is constructed in accordance with the generalised approach to signal processing in noise. To define the GD adaptive threshold based on the observed noise samples, the authors apply an appropriate noise power estimation technique. This study deals with an adaptive GD detection threshold definition as a function of the estimated noise power. Under investigations, they use two noise power estimation procedures. The first is the sliding window technique with the reference cells. The second procedure is based on the adaptive noise power estimation. Comparative analysis of simulation results demonstrates superiority by detection performance in favour of GD implementation in comparison with the well-known constant false alarm rate (CFAR) detectors, namely, cell averaging CFAR and ordered statistics CFAR detectors.

Inspec keywords: radar detection; sensors; radar signal processing

Other keywords: constant false alarm rate detector; signal processing; radar sensor system; ordered statistics CFAR detector; generalised detector; adaptive detection threshold; adaptive noise power estimation; sliding window technique; GD adaptive threshold

Subjects: Radar equipment, systems and applications; Signal detection; Sensing devices and transducers

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