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GPS/BDS/GLONASS/Galileo/QZSS All-constellation Multi-frequency High Precision Positioning and Heading Module

Unicore's new-generation proprietary high-precision positioning and heading module is designed to perform on-chip RTK positioning and dual-antenna heading. The built-in advanced anti-interference unit ensures reliable and accurate positioning data even in complex electromagnetic environments. UM982 is an ideal choice for high-precision applications such as UAVs, autonomous machines, and precision agriculture.

gps jamming

UM982 Features

  • Based on the new generation GNSS SoC - NebulasIV, which integrates RF, baseband and high precision algorithm

  • Supports all-constellation multi-frequency on-chip RTK positioning and dual-antenna heading solution

  • Dual-RTK technology

  • 60 dB narrowband interference suppression and interference detection

  • Adaptive recognition of RTCM format differential data

  • STANDALONE single-station high-precision positioning technology

  • Supports B2b-PPP and E6-HAS

UM982 Technical Specifications

Performance Specifications

Channel1408 channels, based on NebulasIV
FrequencyGPS L1C/A, L2C, L2P(Y), L5
BDS B1I, B2I, B3I, B1C*, B2b*
Galileo E1, E5a, E5b, E6*
Single Point Positioning (RMS)Horizontal: 1.5m
Vertical: 2.5m
DGPS (RMS)Horizontal: 0.4m
Vertical: 0.8m
RTK (RMS)Horizontal: 0.8cm+1ppm
Vertical: 1.5cm+1ppm
Observation accuracy (RMS)BDSGPSGLONASSGalileo
B1I/L1 C/A/G1/E1 code10cm10cm10cm10cm
B1I/L1C/A/G1/E1 carrier phase1mm1mm1mm1mm
B2I/L5/E5a/E5b code10cm10cm10cm10cm
B2I/L5/E5a/E5b carrier phase1mm1mm1mm1mm
B3I/L2P(Y)/L2C/G2 code10cm10cm10cm10cm
B3I/L2P(Y)/L2C/G2 carrier phase1mm1mm1mm1mm
Heading accuracy 
0.1°/1 m baseline
Time accuracy
20 ns
Velocity accuracy (RMS)
0.03 m/s
Cold start
Initialization time
<5s (typical)
Initialization reliability
Data update rateDual antenna 20 Hz (RTK+Heading)
20 Hz raw data output
Differential dataRTCM V3.X
Data FormatNMEA 0183, Unicore

Physical Characteristics

Packaging48 pin LGA
Dimension16.0 × 21.0 × 2.6 mm

Environmental Specifications

Working temperature-40°C~+85°C
Storage Temperature-55°C~+95°C
Humidity95% No condensation
VibrationGJB150.16A-2009, MIL-STD-810F
ShockGJB150.18A-2009, MIL-STD-810F

Communication Interface

1 × SPI*
1 × I2C*
1 × CAN* (share the pin with UART3)

Note: Items marked with * are only supported by specific firmware.


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Product Data Sheet Request
Comprehensive product feature specifications.

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