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GNSS ATMOSPHERIC ESTIMATION WITH AMBIGUITY FIXING

  • US 20120119944A1
  • Filed: 05/26/2011
  • Published: 05/17/2012
  • Est. Priority Date: 05/30/2010
  • Status: Abandoned Application
First Claim
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1. A method of processing GNSS signal data to estimate environmental parameter values, comprisingobtaining GNSS data collected at a plurality of stations distributed over a region from signals received from GNSS satellites over multiple epochs,obtaining a satellite code bias per satellite,estimating from the GNSS data and the satellite code biases a set of float ambiguities per station per satellite and values for atmospheric parameters comprising at least one of:

  • (i) a total electron content per station per satellite, (ii) a zenith total delay per station, (iii) a zenith total delay per station and a set of tropospheric gradients per station, and (iv) a slant total delay per station per satellite,fixing the ambiguities, andestimating from the GNSS data and the fixed ambiguities corrected values for the atmospheric parameters.

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