FOTON: A Software-Defined, Compact, Low-Cost GPS Radio Occultation Sensor. Glenn Lightsey and Todd Humphreys, UT Austin Aerospace Dept. GEOScan Planning Workshop | March 27-30, 2011. FOTON Sensor Overview. Grand Challenges
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Glenn Lightsey and Todd Humphreys, UT Austin Aerospace Dept.
GEOScan Planning Workshop | March 27-30, 2011
Q: What emerging technologies can be exploited to maximize the science impact of GNSS-based radio occultation over the next decade?
Like COSMIC but at a fraction
of the cost per GPSRO sensor
(Fig. 1 of Wallner et al., "Interference Computations Between GPS and Galileo," Proc. ION GNSS 2005)
Chart adapted from Oliver Montenbruck, 2008; Pictures from Gupta, 2009.
Since 2008, The University of Texas, Cornell, and ASTRA LLC have been developing a dual-frequency, software-defined, embeddable GPS-based space-weather sensor.
Prototype FOTON receiver
Now undergoing testing
Goal: Deliver high-end GPSRO benefits at low-end Size/Weight/Power and Cost
FOTON will be ready for selection as a GEOScan payload on IridiumNext
Concern: Our experience with have been developing a dual-frequency, software-defined, embeddable GPS-based space-weather sensor.
at two Antarctic stations indicates that this may be a more serious problem for Iridium-hosted GPSRO than earlier studies suggest.