Dual Antenna u-blox GNSS Inertial Navigation System (INS‑DU)
The INS-DU is the configuration to specify when the GNSS receiver choice drives the bill of materials. Built around dual u-blox ZED-F9P modules — with NovAtel OEM7720 and Septentrio mosaic-H available as alternatives — it delivers all-constellation tracking, RTK, and 5 mm post-processed positioning at a price point suited to scanning and survey products shipping in quantity.
Positioning and heading
Horizontal RTK accuracy is 1 cm + 1 ppm CEP; PPK reaches 5 mm; SBAS 0.6 m; DGPS 0.4 m. Heading resolves to 0.2° on a 2 m antenna baseline with the u-blox pair, or 0.08° if the NovAtel or Septentrio option is fitted. Post-processed heading: 0.1°.
Inertial sensors
Tactical-grade gyroscopes at ±2000 deg/sec with 2 deg/hr in-run bias stability, 72 deg/hr residual bias error and 0.38 deg/√hr angular random walk, working alongside industrial-grade accelerometers spanning ±8, ±15 or ±40 g. Pitch and roll come in at 0.08° static, 0.05° dynamic, 0.03° post-processed. Free-inertial land drift is 1% DT with Tunnel Guide aiding.
Where it fits
Low-cost GNSS-denied navigation, mobile mapping and scanning payloads, integrated land vehicle navigation, and aiming applications where dual-antenna heading is required but tactical-grade drift figures are not.
Mechanical and electrical
Sealed unit 120.5 × 53.2 × 49.3 mm, 320 g, IP67, MIL-STD-810G. OEM board 85.5 × 47.7 × 40.2 mm, 174 g. Operating -40 to +75 °C, storage -50 to +85 °C. Supply 9–36 V DC at 5 W, MIL-STD-1275 protection optional, output in binary or NMEA 0183.
Inertial Labs, a VIAVI Solutions company, supports the INS-DU through ROS, LabVIEW, Waypoint Inertial Explorer and QINSy, with direct ArduPilot and PX4 navigation messaging.
Key features & functionality
- Excellent accuracy in GPS-Denied environments
- Support: ROS, LabVIEW, Waypoint Inertial Explorer, QINSy
- GPS, GLONASS, GALILEO, BEIDOU, SBAS, DGPS, RTK supported signals
- Fluxgate gyro-compensated compass to maintain free-inertial Heading (options)
- High-performance GNSS receivers
- Compatibility with LiDARs (Velodyne, RIEGL, FARO) and optical cameras
- Odometer, Wheel sensor, Airspeed sensor, Wind sensor aiding data
- Advanced, extendable, embedded Kalman Filter based sensor fusion algorithms
- State-of-the-art algorithms for different dynamic motions of Vessels, Ships, Helicopters, UAV, UUV, UGV, AGV, ROV, Gimbals and Land Vehicles
- Implemented ZUPT, ZARUPT, Tunnel Guide, GNSS tracking angle features
- Full temperature calibration, compact design, MIL-STD-810G/DO-160E
- Full integration with ArduPilot platform
INS-DU Main Specifications
| Parameter | INS-DU | INS-DU OEM |
|---|---|---|
| Heading Accurasy | 0.2° (2m baseline) / 0.4° (1m baseline) | 0.2° (2m baseline) / 0.4° (1m baseline) |
| Position Accuracy | 0.5cm (PPK), 1cm (RTK), 60cm (SBAS) | 0.5cm (PPK), 1cm (RTK), 60cm (SBAS) |
| Pitch & Roll Accuracy | 0.05° dynamic, 0.08° static | 0.05° dynamic, 0.08° static |
| GNSS Constellations | BDS, GAL, GLO, GPS, QZSS | BDS, GAL, GLO, GPS, QZSS |
| Corrections | PPK, RTK, SBAS | PPK, RTK, SBAS |
| Type of IMU | MEMS, Industrial-grade | MEMS, Industrial-grade |
| Magnetometer | Embedded Fluxgate Magnetic Compass | Embedded Fluxgate Magnetic Compass |
| Other Features | Affordable price, u-blox all-constellation GNSS, RTK | Affordable price, u-blox all-constellation GNSS, RTK |
| Size (mm) | 120.5 x 53.2 x 49.3 | 85.5 x 47.7 x 39.4 |
| Weight (gram) | 320 | 174 |
Related Products
Trademark Legal Notice: All product names, logos, and brands are the property of their respective owners. All company, product, and service names used in this document are for identification purposes only. Use of these names, logos, and brands does not imply endorsement. ABS, BeiDou, Cobham Limited, EdgeTech, Galileo, GLONASS, GPS, Hexagon, HYPACK, IMAGENEX, Kongsberg Seatex, LabVIEW, Livox, Norbit, NovAtel, NovAtel Inertial Explorer, Ouster, Qinsy, Quanergy, QZSS, R2Sonic, RIEGL, ROCK Robotic, ROS, Septentrio, Ship Motion Control SMC, Teledyne TSS, u-blox, Velodyne, WAASP, Waypoint.