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An overview on the exploitation of cognition in MIMO radar, electronic warfare, and synthetic aperture radar

An overview on the exploitation of cognition in MIMO radar, electronic warfare, and synthetic aperture radar

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This chapter is devoted to the presentation of some miscellanea application domains which could significantly benefit by the use of cognition. The first part is devoted to the presentation of the multiple-input-multiple-output (MIMO) radar transmit beampattern design process which can highly get advantage of the cognitive paradigm. It is well known that MIMO radar is a recently emerging paradigm enabling an enhanced performance over conventional radar in terms of target detection, identification, classification, and localization [1,2]. Additionally, colocated MIMO radar allows a higher flexibility in the transmit beampattern shape [3] based on the ability to transmit distinct waveforms via the probing antennas. This last feature is particularly attractive for cognitive radar systems, where the transmitter dynamically selects the best transmit beampattern in response to the receiver feedbacks, accounting for both previous experience/measurements and stored information. For instance, if the receiver detects in some angles strong unwanted returns, due to both clutter discrete and nonthreatening targets, the transmit beampattern can be shaped to exhibit small gain values in the mentioned directions so as to suppress the interference and to avoid overloading the processor with detections of no-tactical importance. Besides, multiple target tracking can be accomplished via multiple beams in the transmit beampattern (possibly adaptively interleaved with search beams) thus enhancing the multifunctionality of the system [4].

Chapter Contents:

  • 9.1 Introduction
  • 9.2 Cognitive MIMO radar beampattern shaping
  • 9.3 Cognition in EW systems
  • 9.4 Advanced concepts in SAR: exploitation of cognition
  • 9.4.1 3D localization and monitoring of displacements with interferometry
  • 9.4.2 SAR tomography and complex domain analysis of the scattering in multibaseline SAR
  • 9.4.3 Knowledge-based and cognitive concepts in SAR
  • 9.5 Conclusion
  • References

Inspec keywords: radar tracking; object detection; synthetic aperture radar; radar antennas; target tracking; electronic warfare; interference suppression; radar interference; radar detection; radar receivers; radar clutter; radar transmitters; MIMO radar

Other keywords: multiple-input-multiple-output radar; electronic warfare; receiver feedback; multiple target tracking; cognitive radar system; no-tactical importance detection; colocated MIMO radar; probing antenna; interference suppression; target detection; synthetic aperture radar; clutter; transmit beampattern shape design process

Subjects: Signal detection; Electromagnetic compatibility and interference; Electronic warfare; Radar equipment, systems and applications

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