2 research outputs found
TriG - A GNSS Precise Orbit and Radio Occultation Space Receiver
The GPS radio occultation (RO) technique [1] produces
measurements in the ionosphere and neutral atmosphere
[2] that contribute to monitoring space weather and climate
change; and improving operational weather prediction.
The high accuracy of RO soundings, traceable to SI standards,
makes them ideal climate benchmark observations. For
weather applications, RO observations improve the accuracy
of weather forecasts by providing temperature and moisture
profiles of sub-km vertical resolution, over land and ocean
and in the presence of clouds.
JPL is currently flying a handful of RO instruments [3] on
various satellites in Low Earth Orbit (LEO). Although these
receivers have served to pioneer occultation measurements,
various advances in technology and understanding of the RO
technique along with availability of new signals from GPS and
other GNSS satellites allow us to design an improved next
generation space-based Precise Orbit Determination (POD)
and RO receiver, the TriG receiver. The paper describes the
architecture and implementation of the JPL TriG receiver as
well as results obtained with a prototype receiver demonstrating
key technologies necessary for a next-generation space
science receiver