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Adaptive Beamforming Approaches to Improve Passive Radar Performance in Sea and Wind Farms' Clutter
Javier Rosado-Sanz1, María Pilar Jarabo-Amores1, David De la Mata-Moya1
1Signal Theory and Communications Department, University of Alcalá, 28801 Alcalá de Henares, Spain.
Sensors (Basel, Switzerland)
|September 23, 2022
Summary
This study enhances passive radar vessel detection by overcoming sea and wind farm clutter using adaptive beamforming. This method significantly improves signal quality and extends radar coverage for crucial aerial target detection.
Area of Science:
- Electrical Engineering
- Signal Processing
- Radar Systems
Background:
- Passive radar systems face challenges in coastal environments due to variable sea and wind farm clutter.
- Omnidirectional illuminators in passive bistatic radar increase the complexity of interference localization and characterization.
Purpose of the Study:
- To propose and evaluate deterministic and adaptive beamforming techniques for passive radar vessel detection.
- To address the issue of high spatial and temporal clutter variability in coastal scenarios.
- To improve signal-to-interference ratios and radar coverage in passive radar systems.
Main Methods:
- Implementation and evaluation of deterministic and adaptive beamforming techniques.
- Utilizing real-world data from a coastal scenario with sea and wind farm clutter.
- Focusing on interference localization and characterization in a passive bistatic radar setup.
Main Results:
- Adaptive beamforming approaches demonstrated significant improvements in Signal-to-Interference ratio.
- Substantial enhancements in radar coverage were achieved using adaptive techniques.
- Successful detection of an aerial target at a range of 28 km from the passive radar receiver.
Conclusions:
- Adaptive beamforming is effective in mitigating clutter and improving passive radar performance in challenging coastal environments.
- The proposed methods meet demanding performance requirements for aerial target detection.
- This research advances passive radar capabilities for maritime surveillance.
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