Product overview
The Unicore UM982 is an embedded GNSS positioning and heading module for UAVs, autonomous machinery and precision agriculture. Its NebulasIV system-on-chip brings RF, baseband processing and high-precision algorithms together. Master and slave antenna inputs support on-chip RTK and dual-antenna heading, with independent positioning solutions through the Dual-RTK engine. The hardware is a 48-pin LGA module measuring 16.0 × 21.0 × 2.6 mm and weighing 1.82 ± 0.03 g, establishing a compact component footprint for integration into a host system.
Integration provisions include three LVTTL UARTs and firmware-dependent SPI, I2C and CAN interfaces; CAN shares UART3. Master and slave inputs have different supported signal sets, and master-antenna BDS B2b support also depends on firmware. RTK and heading data update at 20 Hz, with heading accuracy specified as 0.1° at a 1 m baseline. Operating temperature spans -40°C to +85°C, while the humidity specification requires no condensation. Differential input uses RTCM V3.X, and output formats include NMEA 0183 and Unicore.
Specifications
| Specification | Value & conditions |
|---|---|
| Positioning and heading | On-chip RTK positioning and dual-antenna heading determinationHeading determination uses dual antennas. |
| Dual-RTK | Independent solutions for the main and secondary antennasDual-RTK operation. |
| Detection functions | Interference detection and spoofing detectionListed module functions; no quantified detection performance supplied. |
| Module configuration | All-system, all-frequency, dual-antenna RTK positioning and headingUM982 |
| Documented applications | Drones, precision agriculture and autonomous machineryHigh-precision navigation and positioning applications |
| Model | UM982Module documented in the supplied user manual. |
| Receiver roles | Rover or base stationSupported operating roles for the UM982. |
| Reserved interfaces | I2C, SPI and CAN are not currently supported.These interfaces are reserved in the supplied manual. |
| Product and purpose | Unicore UM982 high-precision positioning and heading module |
| Applications | UAV, autonomous machinery and precision agriculture |
| Processing architecture | NebulasIV GNSS SoC integrating RF, baseband and high-precision algorithms |
| Positioning and heading architecture | All-constellation, multi-frequency on-chip RTK positioning and dual-antenna heading; Dual-RTK provides independent positioning solutions from master and slave antenna observations.Dual-antenna configuration. |
| Interference and spoofing functions | Anti-jamming and anti-spoofing capabilities, including jamming and spoofing detection |
| Additional positioning services | Adaptive RTCM differential-data recognition; STANDALONE single-station high-precision positioning; B2b-PPP, E6-HAS, QZSS L6E (MADOCA) PPP and SouthPAN L5 PVS support |
| Channels | 1408 channels, based on NebulasIV |
| Master antenna frequencies | GPS L1C/A, L2C, L2P(Y), L5; BDS B1I, B3I, B1C, B2a, B2b*; GLONASS G1, G2; Galileo E1, E5a, E5b, E6; QZSS L1C/A, L2C, L5, L6; SBAS L1C/ABDS B2b support requires specific firmware. |
| Slave antenna frequencies | GPS L1C/A, L2C; BDS B1I, B3I; GLONASS G1, G2; Galileo E1, E5b; QZSS L1C/A, L1C/B, L2C; no SBAS entrySlave antenna. |
| Single-point positioning accuracy | Horizontal: 1.5m; vertical: 2.5mSingle-point positioning; RMS. |
| DGPS accuracy | Horizontal: 0.4m; vertical: 0.8mDGPS; RMS. |
| RTK accuracy | Horizontal: 0.8cm+1ppm; vertical: 1.5cm+1ppmRTK; RMS. |
| PPP accuracy | Horizontal: 5 cm; vertical: 10 cmPPP; RMS. |
| Observation accuracy | B1I/L1C/A/G1/E1, B2I/L5/E5a/E5b and B3I/L2P(Y)/L2C/G2 groups: code 10cm and carrier phase 1mm for every listed constellation entryRMS; listed BDS, GPS, GLONASS and Galileo observation entries. |
| Heading accuracy | 0.1°/1 m baseline1 m antenna baseline. |
| Time accuracy | 20 ns |
| Velocity accuracy | 0.03 m/sRMS. |
| Startup and initialization |
|
| Data update rate | 20 Hz (RTK+Heading)RTK and heading. |
| Data formats | Differential data: RTCM V3.X; data formats: NMEA 0183, Unicore |
| Packaging | 48 pin LGA |
| Dimensions | 16.0 × 21.0 × 2.6 mm |
| Weight | 1.82 ± 0.03 g |
| Working temperature | -40°C~+85°COperating. |
| Storage temperature | -55°C~+95°CStorage. |
| Humidity | 95%No condensation. |
| Vibration | GJB150.16A-2009, MIL-STD-810F |
| Shock | GJB150.18A-2009, MIL-STD-810F |
| Communication interfaces | 3 × UART (LVTTL); 1 × SPI*; 1 × I2C*; 1 × CAN* (shared with UART3)SPI, I2C and CAN require specific firmware; CAN shares UART3. |
| Firmware-dependent support | Asterisk-marked functions are supported only by specific firmware.Items marked with an asterisk. |
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