The GNSS Receiver TIMING from Rakon is a Multi-Constellation GNSS Receiver that operates in the GPS (L1/L2/L5), Galileo (E1/E5/E6), Beidou (B1/B2/B3), QZSS (L1/L2/L5), GLONASS (L1/L2/L3), NavIC (L5), and SBAS bands. It is an off-the-shelf, standalone sub-system that is specifically designed for small and nano-satellites. This GNSS receiver processes signals from up to 448 channels and achieves a positioning accuracy of 1.2 m (horizontal) and 1.9 m (vertical), a velocity accuracy of 3 cm/s, and a timing precision of 5 ns. This sub-system consists of 2 GNSS receivers, a radiation-hard microcontroller, Rakon’s RK409NS OCXO, built-in antennas, power management, and interfaces. The microcontroller provides advanced GNSS data monitoring, innovative navigation algorithms, and clock synchronization functions.
The GNSS Receiver TIMING’s RK409NS oscillator ensures highly stable clock output with short-term stability, which is ensured by the intrinsic OCXO performance. The long-term stability is guaranteed by the microcontroller, which disciplines the oscillator on the GNSS PPS signal. This receiver uses advanced algorithms for smooth synchronization while avoiding any glitches or jumps in the frequency. It provides 1PPS output and full TM/TC communication using RS-422 interface, enhancing resilience against interference.
This GNSS receiver has a time-to-first-fix of less than 20 s/45 s and a holdover stability of 10 µs for a 24-hour holdover. It requires a DC supply from 5 to 48 V (GNSS) and 12 V (OCXO), and consumes less than 3 W (GNSS) and 3.5 W (OCXO) of power. This receiver is available in a space-grade module that measures 120 x 110 x 64 mm and has SMA (female) connectors.
