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PPP-RTK method and system for GNSS signal based position determination

  • US 10,082,578 B2
  • Filed: 10/25/2013
  • Issued: 09/25/2018
  • Est. Priority Date: 10/25/2012
  • Status: Active Grant
First Claim
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1. A method for calculating global navigation satellite system (GNSS) corrections for transmission to a mobile, using a global navigation satellite (GNS) signal correction system comprising a reference station and a system signal transmitter, the method comprising:

  • acquiring at the reference station GNSS data comprising pseudo range system observations and carrier phase system observations from a plurality of GNSS satellites transmitted over multiple epochs;

    applying the GNSS data received from the reference station to a dynamic system state model having the pseudo range system observations and carrier phase system observations as measurements;

    dynamically estimating satellite-single-differenced floating value mixed code-and-phase system hardware delays for distinct carrier phase observations via the dynamic system state model; and

    transmitting the mixed code-and-phase system hardware delays to the mobile in real time via the system signal transmitter to improve at least one of an accuracy and a convergence time for estimating a mobile earth position.

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