Patent ID: 9671501
Date: 2017-06-06
CPC Classifications: G01S

Claim:
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.