Article,

GNSS Software-based Interferometry

, , and .
European Journal of Navigation, 7 (2): 10-16 (August 2009)

Abstract

The article discusses the revival of the interferometry concept used with GPS satellites, during the early days of the GPS system. Several reasons account for the re-discovery of this experiment. First, relative positioning with GPS signals originates from the field of interferometry. Second, beyond relative positioning with code measurements only, the use of precise carrier phase measurements for GNSS positioning also originates from the interferometry framework. Historically interferometric positioning aiming at measuring a three dimensional baseline vector has been initiated in the late seventies almost simultaneously by two competing teams that had means without any common measure with those at stake in our set-upm, where the low price of our front-ends is the attracting feature of the experiment.

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