Method for a global satellite navigation system
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United States of America Patent
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May 29, 2012
Grant Date -
May 26, 2011
app pub date -
Oct 22, 2010
filing date -
Apr 22, 2008
priority date (Note) -
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Abstract
A method for estimating satellite-satellite single difference biases is described. The method uses an ionosphere-free mixed code-carrier combination of maximum ambiguities discrimination defined at the ration between wavelength and noise standard deviation. The accuracy of the biases estimation is further improved by an additional ionosphere-free mixed code-carrier combination of time-difference measurement that is uncorrelated with the first combination. Finally, an alternative method is based on a combination of carrier signals in a common frequency band which allows estimating the biases individually.
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