Direction differentiating cluster reflector for marine/air navigation

Direction differentiating cluster reflector for marine/air navigation

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A cluster reflector formed by a perfect electric conductor coated trihedral corner reflector, and soft and hard surface coated triangular trihedral corner reflectors, can be used in marine/air navigation. The cluster reflector scatters back circularly polarised waves of one or the other handedness depending on which reflector is illuminated.


    1. 1)
      • J.S. Hall . (1947) Radar aids to navigation.
    2. 2)
      • D.G. Michelson , E.V. Jull . Depolarizing trihedral corner reflectors for radarnavigation and remote sensing. IEEE Trans. Antennas Propagat. , 5 , 513 - 518
    3. 3)
      • P.-S. Kildal . Artificially soft and hard surfaces in electromagnetics. IEEE Trans. Antennas Propagat. , 10 , 1537 - 1544
    4. 4)
      • Lindell, I.V., Puska, .P.: `Reflection dyadic for the soft and hard surface withapplication to the depolarizing corner reflector', 204, Electromagnetics Laboratory Report, September 1995.
    5. 5)
      • S.D. Robertson . Targets for microwave radar navigation. Bell Syst. Tech. J. , 4 , 852 - 869

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