The RO Instrument for MetOp-SG – Engineering Model Test Results
Presenter:
Anders Carlström
RUAG Space, Göteborg, Sweden
RUAG Space, Göteborg, Sweden
Talk
The Radio Occultation (RO) instrument for MetOp Second Generation (MetOp-SG) is under development at RUAG Space. An instrument engineering model has been built and successfully tested. The current version of the instrument supports GALILEO and GPS signals in the L1 and L5 frequency bands. With future software updates, the instrument will support additional signals transmitted in those bands (e.g. Beidou, QZSS, GLONASS KM).
The RO instrument is also equipped with the interference mitigation device ‘Frodo’ which removes interference in the L5 band from ground based transmitters for the aeronautical radio navigation system known as DME/TACAN.
The end-to-end test results from the instrument engineering model demonstrate that the neutral bending angle measurement accuracy is better than the requirement at all impact heights, i.e. below 0.5 urad rms at large impact heights. The test set-up includes a large number of atmosphere refractivity profiles being simulated through a GNSS signal generator, as well as simulated DME/TACAN interference at worst case levels.
Presentation in PDF:
