Sensors (Sep 2022)

Adaptive Beamforming Approaches to Improve Passive Radar Performance in Sea and Wind Farms’ Clutter

  • Javier Rosado-Sanz,
  • María Pilar Jarabo-Amores,
  • David De la Mata-Moya,
  • Nerea Rey-Maestre

DOI
https://doi.org/10.3390/s22186865
Journal volume & issue
Vol. 22, no. 18
p. 6865

Abstract

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This article presents the problem of passive radar vessel detection in a real coastal scenario in the presence of sea and wind farms’ clutter, which are characterised by high spatial and time variability due to the influence of weather conditions. Deterministic and adaptive beamforming techniques are proposed and evaluated using real data. Key points such as interference localisation and characterisation are tackled in the passive bistatic scenario with omnidirectional illuminators that critically increase the area of potential clutter sources to areas far from the surveillance area. Adaptive beamforming approaches provide significant Signal-to-Interference improvements and important radar coverage improvements. In the presented case study, an aerial target is detected 28 km far from the passive radar receiver, fulfilling highly demanding performance requirements.

Keywords