×

Method and apparatus for generating a time signal

  • US 6,445,340 B2
  • Filed: 01/26/2001
  • Issued: 09/03/2002
  • Est. Priority Date: 01/26/2000
  • Status: Active Grant
First Claim
Patent Images

1. A system for producing a system time signal, the system including:

  • A. a directional antenna that is focused to receive signals transmitted by a geostationary satellite; and

    B. a receiver that processes the signal received by the antenna, the receiver including i. code and carrier tracking circuits for tracking a carrier and a PRN code included in the signals received by the antenna;

    ii. a decoder for decoding timing information, satellite position information and ionospheric delay information from the signals received by the antenna; and

    iii. a correction subsystem for producing a corrected timing signal that is based on the transmitted signal and corrected for associated propagation and atmospheric delays, and iv. a reference clock for producing a system time signal that is associated with the corrected timing signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×