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The Doppler Spectra of Medium Grazing Angle Sea Clutter; Part 1: Characterisation

Watts, S; Rosenberg, L; Bocquet, S; Ritchie, MA; (2016) The Doppler Spectra of Medium Grazing Angle Sea Clutter; Part 1: Characterisation. IET Radar, Sonar and Navigation , 10 (1) pp. 24-31. 10.1049/iet-rsn.2015.0148. Green open access

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Abstract

This paper is concerned with the characterisation of Doppler spectra from high range resolution X-band radar sea clutter observed from an airborne platform over the range of grazing angles, 15° to 45°. It is observed that when looking up or down wind there is a strong correlation between mean Doppler shift and local spectrum intensity. When combined with random fluctuations of spectrum width, these characteristics give the spectra a temporal and spatial variability. This behaviour has previously been observed in low grazing angle data and these results confirm the wider applicability of the models developed using that data. The modelling method is also extended here to capture the bimodal behaviour observed with high intensity returns from breaking waves looking up or down-wind.

Type: Article
Title: The Doppler Spectra of Medium Grazing Angle Sea Clutter; Part 1: Characterisation
Location: UK
Open access status: An open access version is available from UCL Discovery
DOI: 10.1049/iet-rsn.2015.0148
Publisher version: http://digital-library.theiet.org/content/journals...
Language: English
Additional information: Copyright © The Institution of Engineering and Technology. This paper is a preprint of a paper submitted to IET Radar, Sonar & Navigation and is subject to Institution of Engineering and Technology Copyright. If accepted, the copy of record will be available at IET Digital Library
Keywords: Radar, Sea clutter, Doppler, Grazing angle
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1469348
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