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Method and system for location-dependent time-specific correction data

  • US 10,234,562 B2
  • Filed: 02/23/2012
  • Issued: 03/19/2019
  • Est. Priority Date: 09/30/2008
  • Status: Active Grant
First Claim
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1. A method for delivery of location-dependent time-specific corrections to positioning signals, said method comprising:

  • generating a first extended-lifetime correction for a first region, wherein the first extended-lifetime correction comprises virtual reference station correction data usable for a period greater than one minute and less than twenty minutes, the virtual reference station correction data generated based on positioning signals received from a plurality of global navigation satellite systems (GNSS) reference receivers;

    using a pre-defined distribution timetable to determine a first time and a first time interval for transmitting said first extended-lifetime correction to said first region; and

    transmitting said first extended-lifetime correction via a wireless communication network to said first region at the first time, and waiting to transmit a next first extended-lifetime correction to the first region until the first time interval has elapsed, wherein the first time interval is greater than one minute and less than twenty minutes.

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