GNSS Solutions

The MF-GNSS-300 is a rack-mounted multi-frequency receiver designed for precision positioning and high-stability timing. It integrates a Rubidium oscillator for Stratum 0 holdover, supports more than 200 tracking channels across six constellation families, and connects via UART, USB, or Ethernet. The GNSS-R-300 is a compact marine-grade GNSS receiver with an integrated 7-inch touch CDU, dual RS-422 NMEA 0183 outputs, and IP65/IP67 environmental protection. It is purpose-built for vessel navigation, maritime survey, and offshore positioning in GNSS, DGNSS, and RTK modes.

The MF-GNSS-300 tracks GPS (L1 C/A, L1C, L2C, L5), GLONASS (L1 C/A, L2 C/A, L3 CDMA), Galileo (E1, E5A, E5B, E5AltBOC, E6), BeiDou (B1I, B1C, B2I, B2A, B2B, B3I), IRNSS (L5 SPS and S SPS), and SBAS (L1). The T_GNSS_R_300 supports GPS L1 and L5, BeiDou, GLONASS, and selectable IRNSS, covering the constellations most relevant to marine and regional navigation across Indian waters.

Yes. Both the MF-GNSS-300 and GNSS-R-300 include IRNSS signal support. The MF-GNSS-300 simultaneously tracks IRNSS L5 (SPS) and S (SPS) bands alongside all other constellations. The T_GNSS_R_300 includes a user-selectable IRNSS signal option. Both receivers are therefore compatible with India's NavIC regional satellite navigation system and suitable for defence, maritime, and government applications that require or mandate IRNSS coverage.

The GNSS-R-300 achieves better than 1 metre accuracy in standard GNSS mode. Centimetre-level accuracy is available when RTK correction data is applied, available on specific request. The MF-GNSS-300 delivers 5 metres (3D RMS) or better in open-sky conditions using the supplied antenna in standard PVT mode. Enabling dual, triple, or quad frequency mode reduces ionospheric error and improves accuracy further. Achievable accuracy in both receivers depends on constellation selection, number of active frequencies, and local signal conditions.

The GNSS-R-300 provides dual RS-422 outputs carrying user-selectable NMEA 0183 sentences including RMC, GGA, GLL, and ZDA, with serial communication between the receiver and the CDU. The MF-GNSS-300 supports UART (RS232 levels), USB, and Ethernet communication ports, a 1PPS timing output via SMA connector, a 10 MHz external frequency input via SMA, and NMEA, RINEX, and proprietary output format support, with RAIM integrity monitoring included.

The MF-GNSS-300 is FCC, CE, and RoHS certified. Both the GNSS-R-300 receiver and CDU carry IP65 ingress protection, and the T_GNSS_ANT_300 marine antenna is rated IP67 for direct water exposure. Both products operate from -40 degrees Celsius to +85 degrees Celsius, supporting continuous outdoor, marine, and industrial deployment. The MF-GNSS-300 antenna, the GPA-014-S15, carries Right Hand Circular Polarization and 25 to 40 dB active gain with multipath mitigation at both antenna and baseband processing levels.