The Toolkit for GPS/GLONASS/Galileo/SBAS/Beidou/QZSS Data
Teqc (pronouced "tek") is a simple yet powerful and unified approach to solving many pre-processing problems with GPS, GLONASS, Galileo, SBAS, Beidou-2/Compass, and QZSS data, especially in RINEX or BINEX format.