Product overview
The Unicore UM482 is an embedded positioning and heading module for UAVs, lightweight robots, GIS equipment and intelligent driving systems. Its Nebulas-II GNSS SoC provides 432 tracking channels, while a dual-RTK engine supports independent master and slave antenna solutions. Dual-antenna heading is specified at 0.1° with a 1 m baseline. The hardware is a surface-mount module measuring 30 × 40 × 4 mm with two 30-pin connections, giving integrators a compact component for incorporation into their own equipment.
Integration provisions include three LV-TTL UARTs, an LV-TTL 1PPS output and an Event port, with NMEA-0183 and Unicore data output and RTCM v2.3/3.0/3.2 corrections. Positioning and heading output reaches up to 20 Hz. The supply requirement is 3.3 VDC with +5%/−3% tolerance, and consumption is typically 2.4 W. Operating temperature spans −40 °C to +85 °C, with 95% non-condensing humidity specified. QZSS support has conflicting band descriptions: L1/L2 in the product description and L1/L5 in the technical specifications.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and purpose | Unicore UM482 high-precision positioning and heading module |
| Applications and receiver architecture | Nebulas-II SoC module designed for lightweight robots, GIS, intelligent driving and UAV integration |
| Channels | 432 channels, based on Nebulas-II GNSS SoC |
| Frequencies | BDS B1/B2; GPS L1/L2; GLONASS L1/L2; Galileo E1/E5b; QZSS L1/L5 in the technical specifications. The product description separately specifies QZSS L1/L2. |
| Velocity accuracy | 0.03 m/sRMS. |
| Time accuracy | 20 nsRMS. |
| Single-point positioning accuracy | Horizontal: 1.5 m; vertical: 2.5 mSingle-point positioning; RMS. |
| DGPS accuracy | Horizontal: 0.4 m; vertical: 0.8 mDGPS; RMS. |
| RTK accuracy | Horizontal: 1 cm + 1 ppm; vertical: 1.5 cm + 1 ppmRTK; RMS. |
| Correction formats | RTCM v2.3/3.0/3.2 |
| Update rate | 20 Hz; positioning and heading output described as up to 20 Hz |
| Dimensions | 30 × 40 × 4 mm |
| Packaging | Surface-mount packaging |
| Pin configuration | 2 × 30 pins |
| Operating temperature | −40 °C to +85 °CWorking temperature. |
| Storage temperature | −55 °C to +95 °CStorage temperature. |
| Humidity | 95%, non-condensingNo condensation. |
| Vibration | GJB150.16-2009; MIL-STD-810 |
| Shock | GJB150.18-2009; MIL-STD-810 |
| Supply voltage | 3.3 VDC, +5%/−3% |
| LNA output | 4.75–5.10 V; 0–100 mA |
| Ripple voltage | 100 mV peak-to-peak maximumMaximum peak-to-peak ripple. |
| Power consumption | 2.4 W typicalTypical power consumption. |
| Functional ports | 3 × UART (LV-TTL); 1 × 1PPS (LV-TTL); 1 × EventUART and 1PPS use LV-TTL levels. |
| Dual-RTK architecture | Dual-RTK engine with independent master and slave antenna RTK solutionsIndependent master and slave antenna RTK solutions. |
| Heading precision | 0.1° at a 1 m baseline1 m baseline; dual-antenna heading. |
| Time to first fix | Less than 25 sCold start. |
| Initialization and reacquisition |
|
| Data output | NMEA-0183 and Unicore |
| Inertial navigation accuracy | Less than 5% of distance travelled during GPS-denied conditionsGPS-denied conditions. |
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