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High resolution autonomous precision approach and landing system

  • US 5,654,890 A
  • Filed: 05/31/1994
  • Issued: 08/05/1997
  • Est. Priority Date: 05/31/1994
  • Status: Expired due to Term
First Claim
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1. An approach and landing system for an aircraft, said system comprising:

  • at least one navigation unit for providing navigation information;

    a low-bandwidth radar unit for providing radar information;

    a processor unit coupled to receive navigation information from said at least one navigation unit, and to receive radar information from said radar unit, said processor unit providing an output based on the provided navigation information and radar information;

    a memory, coupled to said processor unit, for storing information representing a scene, said processor unit correlating the stored scene information with the output of said processor unit to provide a mapped scene, said mapped scene comprising a real-time virtual view from said aircraft;

    a display unit, coupled to receive the output of said processor and coupled to said memory, for displaying said mapped scene for use in navigating said aircraft;

    and a steppable frequency oscillator for providing a signal which is stepped in frequency to said radar unit, thereby providing an increased range resolution.

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