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1 results

  • A SFCW harmonic radar system for maritime search and rescue using passive and active tags

  • Thomas Harzheim, Marc Mühmel, Holger Heuermann
  • Journal:
    International Journal of Microwave and Wireless Technologies / Volume 13 / Issue 7 / September 2021
    Published online by Cambridge University Press:
    12 April 2021, pp. 691-707
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  • This paper introduces a new maritime search and rescue system based on S-band illumination harmonic radar (HR). Passive and active tags have been developed and tested while attached to life jackets and a small boat. In this demonstration test carried out on the Baltic Sea, the system was able to detect and range the active tags up to a distance of 5800 m using an illumination signal transmit-power of 100 W. Special attention is given to the development, performance, and conceptual differences between passive and active tags used in the system. Guidelines for achieving a high HR dynamic range, including a system components description, are given and a comparison with other HR systems is performed. System integration with a commercial maritime X-band navigation radar is shown to demonstrate a solution for rapid search and rescue response and quick localization.