Triple multiplexing spread spectrum receiver

  • US 6,522,682 B1
  • Filed: 03/02/1999
  • Issued: 02/18/2003
  • Est. Priority Date: 03/15/1996
  • Status: Expired due to Term
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First Claim
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1. A navigation system comprising:

  • a first processor for tracking GPS signals from a plurality of transmitters and providing data related to the position of an object, the first processor having a spread spectrum receiver for receiving signals modulated by-a spectrum spreading code having a fixed number of bits repeated during a fixed length time period being transmitted from the plurality of transmitters, the receiver comprising;

    first means for dividing the fixed length time period into a number of time segments evenly divisible into the twice the fixed number of bits;

    second means for applying each time segment to each of a number of channels, each of the channels being used for tracking one of the plurality of transmitters;

    third means for applying each of the time segments in each of the channels to a number of code phase delay tests to derive information related to the received signals; and

    fourth means responsive to the information for deriving the position-related data;

    a second processor responsive to the position-related data for determining a navigation solution; and

    a display unit responsive to the navigation solution for providing navigation information related to the object.

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