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Global navigation satellite systems (GNSS) positioning using precise satellite data

  • US 9,671,501 B2
  • Filed: 09/12/2013
  • Issued: 06/06/2017
  • Est. Priority Date: 09/26/2012
  • Status: Active Grant
First Claim
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1. Method to estimate parameters derived at least from global navigational satellite system (GNSS) signals useful to determine a position, comprising:

  • obtaining at least one GNSS signal observed at a GNSS receiver from each of a plurality of GNSS satellites;

    receiving global correction information useful to correct at least the obtained GNSS signals from a first set of GNSS satellites among the plurality of GNSS satellites, wherein the global correction information includes correction information which is independent from the position to be determined;

    receiving local correction information useful to correct at least the obtained GNSS signals from a second set of GNSS satellites among the plurality of GNSS satellites, wherein the local correction information includes correction information which is dependent on the position to be determined;

    processing the obtained GNSS signals from the first set of GNSS satellites by using the global correction information; and

    processing the obtained GNSS signals from the second set of GNSS satellites by using the local correction information;

    wherein the first set of GNSS satellites is different from the second set of GNSS satellites.

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