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Beamforming Techniques for Passive Radar: An Overview.

José M Núñez-Ortuño1, José P González-Coma1, Rubén Nocelo López1

  • 1Defense University Center at the Spanish Naval Academy, 36920 Marín, Spain.

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|April 13, 2023
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Summary
This summary is machine-generated.

Passive radar systems offer silent, cost-effective non-cooperative target detection using an illuminator of opportunity. This study reviews beamforming methods for antenna arrays, analyzing their pros and cons for future advancements.

Keywords:
MRCMVDRZFbeamformingcross ambiguity functionpassive radaruniform linear array

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Area of Science:

  • Electrical Engineering
  • Signal Processing
  • Radar Systems

Background:

  • Passive radar utilizes existing "illuminators of opportunity" (IoO) for non-cooperative target detection.
  • This approach enables silent, cost-effective, and covert system deployments.
  • Antenna arrays are crucial for enhancing passive radar performance through coherent signal combination.

Purpose of the Study:

  • To provide a comprehensive overview of current beamforming methods in passive radar.
  • To analyze the advantages and disadvantages of various beamforming techniques.
  • To explore the impact of increasing antenna array elements and identify future research challenges.

Main Methods:

  • Literature review and summarization of passive radar beamforming techniques.
  • Analytical comparison of different beamforming methods, focusing on benefits and drawbacks.
  • Exploration of scalability through increased antenna element count.

Main Results:

  • Identified key linear processing methods essential for passive radar performance enhancement.
  • Detailed analysis of the trade-offs associated with different beamforming strategies.
  • Preliminary insights into the performance gains achievable with larger antenna arrays.

Conclusions:

  • Beamforming is critical for maximizing the potential of passive radar systems with antenna arrays.
  • Further research is needed to address challenges related to scalability and advanced processing.
  • Passive radar technology holds significant promise for covert and economical target detection.