GRTK Introduction
GRTK is a dual-antenna high-precision differential positioning and directional module (Real Time Kinematics) independently developed by Blicube. A complete RTK system can be formed through two GRTK modules (one mobile terminal and one base station terminal).
The module is based on a new generation of high-performance GNSS SoC chip design, supports multi-system multi-frequency RTK positioning, dual-antenna high-precision orientation, GPS, GLONASS, Beidou, Galileo & QZSS navigation and positioning, and heading with compass inside. It is mainly for high-precision positioning and orientation requirements such as drones, robots and intelligent driving.
Please read this manual carefully before using the GRTK centimeter-level positioning module. If you have any questions you don't understand, please contact our technical support email info@blicube.com.
If you are interested with GRTK, welcome to join GRTK Discord Community to give us feedback.
Performance
| Item | |
|---|---|
| Frequencies | BDS B1I/B2I1 GPS L1/L2 GLONASS L1/L2 Galileo E1/E5b QZSS L1/L2 |
| Single Point Positioning (RMS) | Horizontal：1.5m Vertical：2.5m |
| DGPS (RMS) | Horizontal：0.4m Vertical：0.8m |
| RTK (RMS) | Horizontal：1cm+1ppm Vertical：1.5cm+1ppm |
| Heading Accuracy (RMS) | 0.2 degree/1 m baseline |
| Velocity Accuracy (RMS) | 0.03 m/s |
| Time Accuracy (RMS) | 20 ns |
| Time to First Fix (TTFF) | Cold start < 25 s |
| Initialization Time | < 5s (typical) |
| Reacquisition | < 1 s |
| Correction | RTCM v2.3/3.0/3.2 |
| Data Output | NMEA-0183 |
| Update Rate | 20 Hz |
| Inertial Navigation Accuracy | < 5% of distance travelled during GPS denied conditions |
| Working Temperature | -20℃ to +85℃ |
| Power Supply | 5v to 35v |
| Power Dissipation | ~2.5W |
| Compass inside | Support |
Physical size
Test Video
- Unmanned vehicle automatic route mission measurement.