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MARINE RADAR-BEACON TRANSPONDER NAVIGATION AND COLLISION AVOIDANCE SYSTEM

  • US 3,772,692 A
  • Filed: 01/05/1972
  • Issued: 11/13/1973
  • Est. Priority Date: 01/05/1972
  • Status: Expired due to Term
First Claim
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1. A radio system for navigation and for avoiding collisions between first and second stations comprising:

  • beacon transponder means adapted to be mounted at an elevated position on said first station, azimuth scanning radar transmitter means mounted on said second station for irradiating said first station and said beacon transponder means, radar receiver means mounted on said second station for receiving signals in response to the irradiation of said first station, beacon receiver means mounted on said second station for receiving signals in response to operation of said beacon transponder means, means including indicator means for forming a display selectively in response to said radar and said beacon receiver means for collision avoidance purposes, plotter means for forming a permanent record in a medium selectively in response to said radar and said beacon receiver means, said plotter means comprising printer means movable along a first path adapted to mark said medium moving along a second path substantially at right angles to said first path, said plotter means being so constructed and arranged that said intensifying signals produce a lineal marking substantially parallel to said second path only for a station having substantially a constant bearing course with respect to said second station for collision warning purposes, azimuth cursor control means for cooperative operation with said indicator means, pick-off means responsive to said azimuth cursor control means, and lineal electrical meter means cooperating with said printer means and having pointer means responsive to said pick-off means for motion substantially parallel to said first path, said cursor control means, said pick-off means, and said lineal meter means being adapted for correlation of the identification of selected station representations shown on said indicator means and on said medium.

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