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Frequency agile radio

  • US 5,377,222 A
  • Filed: 08/10/1993
  • Issued: 12/27/1994
  • Est. Priority Date: 05/08/1992
  • Status: Expired due to Term
First Claim
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1. A method, using a frequency-agile receiver in a frequency-agile radio system, for receiving signals from at least one transmitter transmitting on a plurality of pseudo-random frequencies, comprising the steps of:

  • a. scanning a radio spectrum;

    b. identifying occupied portions of the ratio spectrum;

    c. storing information identifying the occupied portions of the radio spectrum;

    d. skipping over, in response to the information and while receiving with the frequency-agile receiver, the occupied portions of the radio spectrum;

    e. detecting the presence of a radio carrier;

    f. frequency locking, responsive to detecting the radio carrier, for compensating for transmitter and receiver frequency drift;

    g. receiving message data on the radio carrier; and

    h. repeating, responsive to not detecting the presence of the radio carrier, steps a through d.

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