Year: 2021
Type: article
Abstract: Marine radars are increasingly popular for monitoring meteorological and oceanographic parameters such as ocean surface wind, waves and currents as well as bathymetry and shorelines. Within this paper a coherent on receive marine radar is introduced, which is based on an incoherent off the shelf pulsed X-band radar. The main concept of the coherentization is based on the coherent on receive principle, where the coherence is achieved by measuring the phase of the transmitted pulse from a leak in the radar circulator, which then serves as a reference phase for the transmitted pulse. The Doppler shift frequency can be computed from two consecutive pulse-pairs in the time domain or from the first moment of the Doppler spectrum inferred by means of a short time Fast Fourier Transform. From the Doppler shift frequencies, radial speed maps of the backscatter of the ocean surface are retrieved. The resulting backscatter intensity and Doppler speed maps are presented for horizontal as well as vertical polarization, and discussed with respect to meteorological and oceanographic applications.
Source: Sensors
DOI: 10.3390/s21237828
Institution: Helmholtz-Zentrum Hereon
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Life below water
Open Access status: gold
Estimated APC paid: $2,376
Awards: Improving the representation of small-scale nonlinear ocean-atmosphere interactions in Climate Models by innovative joint observing and modelling approaches, Betrieb der FINO3-Forschungsplattform 2012-2017, Verbundvorhaben: Forschungs- und Technologieprojekte auf der FINO 3 - Forschungsplattform zur Weiterentwicklung der Offshore-Windenergienutzung (FINO 3), Teilvorhaben: Messung und Kurzzeitvorhersage von Windfeldern und Windböen mit dem marinen Radar, Verbundvorhaben: FINO 3 - Forschung auf FINO 3 für die Offshore-Windtechnologie (2018-2022), Teilvorhaben: EMK - Einzelwellenmessung und Kurzzeitvorhersage
OpenAlex ID: W3214749015