Post on 12-Jan-2016
description
Thomas Pany, IGS Workshop 2008
Survey of the “ipexSR” Software Receiver • High end, multi-frequency, real-time capable
• Tracks civil signals coming from all-in-view GPS / Galileo / SBAS satellites
• User code (C or MATLAB) can be used at all levels
• Input IF samples from - triple frequency (L1 or E1, L2, L5 or E5a)
USB Front-End (real-time processing)- recorded data files (post-processing)- single frequency L1 frontend
• Measurement accuracy levels - < 30 cm for code measurements- ~1 mm for carrier phase measurements
GNSS SDR Technology
Thomas Pany, IGS Workshop 2008
Double Difference Correlator Values
GNSS SDR Technology
•Provide complex prompt correlator values for post-processing
•Form double differences at correlator level
•Do carrier phase tracking at double difference level
•Expected improvement: 6-20 dB
tPTtitP trkcoh ̂exp
tPtPtPtPtP lm
km
ln
kn
RINEX carrier phase