Joint dynamic spectrum access and target‐matched illumination for cognitive radar. Issue 5 (1st May 2019)

• Record Type: Journal Article
• Authors: Palamà, Riccardo; Griffiths, Hugh; Watson, Francis
• Is Part Of: IET radar, sonar & navigation. Volume 13:Issue 5(2019)
• Page Start: 750
• Page End: 759
• Publication Date: 2019-05-01
• Subjects: radar detection -- radar clutter -- object detection -- radar interference -- cognitive radio -- optimisation -- transient response; target‐matched illumination -- cognitive radar -- radio‐frequency spectrum -- target scattering properties -- received signal -- target impulse response -- radar waveform -- target spectral components -- clutter power -- joint dynamic spectrum access; Signal processing -- Periodicals; Radar -- Periodicals; Sonar -- Periodicals; Electronics in navigation -- Periodicals; Navigation -- Periodicals; 621.3848
• DOI: 10.1049/iet-rsn.2018.5218
• Languages: English
• ISSNs: 1751-8784

Abstract

Abstract : This study addresses a radar architecture to design a waveform that dynamically fits into the gaps in the radio‐frequency spectrum and that matches the target scattering properties. The optimisation metric considered is the mutual information between the received signal and the target impulse response, the maximisation of which makes the radar waveform illuminate a wider number of target spectral components. The proposed scheme is conceived to be part of a cognitive – or fully adaptive – system, which adapts its waveform in a perception‐action cycle, by using a trade‐off between the observation time and the desired performance. In this work, particular attention is paid to analyse how the chosen metric is influenced by external parameters such as the target, interference and clutter power and radar parameters such as the observation time and the transmit power.