Title:
GNSS SIGNAL PROCESSING TO ESTIMATE MW BIASES
Document Type and Number:
WIPO Patent Application WO/2011/034617
Kind Code:
A3
Abstract:
Methods and apparatus are described for processing a set of GNSS signal data derived from code observations and carrier-phase observations at multiple receivers of GNSS signals of multiple satellites over multiple epochs, the GNSS signals having at least two carrier frequencies, comprising: forming an MW (Melbourne- Wϋbbena) combination per receiver-satellite pairing at each epoch to obtain a MW data set per epoch, and estimating from the MW data set per epoch an MW bias per satellite which may vary from epoch to epoch, and a set of WL (widelane) ambiguities, each WL ambiguity corresponding to one of a receiver-satellite link and a satellite- receiver-satellite link, wherein the MW bias per satellite is modeled as one of (i) a single estimation parameter and (ii) an estimated offset plus harmonic variations with estimated amplitudes.
Inventors:
SEEGER STEPHAN (DE)
Application Number:
PCT/US2010/002565
Publication Date:
September 29, 2011
Filing Date:
September 19, 2010
Export Citation:
Assignee:
TRIMBLE NAVIGATION LTD (US)
SEEGER STEPHAN (DE)
SEEGER STEPHAN (DE)
International Classes:
G01S19/37; G01S19/20
Foreign References:
| US20080036654A1 | 2008-02-14 | |||
| US20090098880A1 | 2009-04-16 | |||
| US5311194A | 1994-05-10 | |||
| US20080238768A1 | 2008-10-02 |
Attorney, Agent or Firm:
RITER, Bruce, D. (Los Altos, CA, US)
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