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System for simultaneously deriving position information from a plurality of satellite transmissions

  • US 5,014,066 A
  • Filed: 07/20/1989
  • Issued: 05/07/1991
  • Est. Priority Date: 03/01/1982
  • Status: Expired due to Term
First Claim
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1. A method of determining position information from a composite of spread spectrum, suppressed carrier signals transmitted simultaneously at the same frequencies by a plurality of orbiting satellites and received simultaneously from different directions by an antenna, comprising:

  • (a) forming a digital representation of said composite;

    (b) applying said digital representation to a plurality of logic circuits, each said logic circuit being responsive to the signal transmitted by a different selected satellite and operating synchronously in response to a common clock;

    (c) deriving simultaneously, in each said logic circuit, data representing the signal transmitted by the satellite to which each said logic circuit is responsive; and

    (d) combining the simultaneously derived data from a plurality of said logic circuits to determined position information.

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