Automotive-Grade High-Precision Dual-Frequency Multi-GNSS RTK and INS Integrated Positioning Module
Model: UM681A
Specifications
| Manufacturer: Unicore |
| Channels: 96 channels, based on UFirebird II |
| Frequency: GPS L1C/A, L1C *, L5; BDS B1I, B1C *, B2a; GLONASS G1 *; Galileo E1, E5a; NavIC L5 *; QZSS L1, L5; SBAS L1C/A |
| Modes: Single-system standalone positioning; multi-system combined positioning |
| TTFF: Cold start: < 26 s; hot start: < 2 s; reacquisition: < 2 s |
| Single-point positioning (RMS): Horizontal: 1.5 m (open sky); vertical: 2.5 m (open sky) |
| RTK (RMS): Horizontal: 1 cm + 1 ppm (open sky); vertical: 2 cm + 1 ppm (open sky) |
| INS-only positioning error: <1% of the distance traveled without GNSS signals |
| Velocity accuracy (RMS)2: 0.05 m/s (GNSS) |
| 1PPS: 20 ns |
| Sensitivity: BDS + GPS + GLONASS + Galileo; tracking: -162 dBm; cold start: -147 dBm; hot start: -157 dBm; reacquisition: -158 dBm |
| Data update rate: 1 Hz / 5 Hz / 10 Hz |
| Differential data: RTCM V3.X |
| Data format: NMEA 0183, Unicore |
