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Radar transponder

  • US 5,724,045 A
  • Filed: 09/20/1995
  • Issued: 03/03/1998
  • Est. Priority Date: 09/22/1994
  • Status: Expired due to Term
First Claim
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1. A multi-functional radar transponder having a Global Positioning System (GPS) receiver and equipped for being mounted in a ship comprising:

  • means for monitoring radar signals from other ships in a normal mode and for receiving and transmitting marine disaster signals in an emergency mode;

    a multi-functional antenna structure comprising;

    a first antenna for receiving the radar signals from other ships in the normal mode and for receiving and transmitting marine disaster signals in the emergency mode; and

    a second antenna for receiving GPS signals mounted to be positioned adjacent to and to be folded out to a position extending at an angle of about 90 degrees to the first antenna in the emergency mode; and

    a first switch operated with the positioning of the second antenna from the normal mode to the emergency mode for disenabling the transmission of the marine disaster signals in the normal mode and for enabling the transmission of the marine disaster signals in the emergency mode.

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