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Position Estimation Methods and Apparatus

  • US 20110187590A1
  • Filed: 10/05/2009
  • Published: 08/04/2011
  • Est. Priority Date: 10/06/2008
  • Status: Active Grant
First Claim
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1. A method of determining position of a GNSS receiver antenna, comprising:

  • a. acquiring input data for each of a plurality of epochs, the input data comprising observations at the GNSS receiver antenna of signals of GNSS satellites, and clock and position information for each of the satellites,b. estimating float parameters of a state vector from the input data of each epoch, the float parameters comprising receiver antenna position, receiver clock, and at least one ambiguity per satellite,c. detecting a jump in the at least one ambiguity of at least one satellite from one epoch to another epoch,d. estimating bridge parameters from the input data of at least one epoch and from the estimated float parameters, the bridge parameters comprising values sufficient to update the float parameters to compensate for the jump, ande. using the bridge parameters to update the float parameters.

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