UM981eb

UM981eb

UM981/UM981SGPS/BDS/GLONASS/Galileo/QZSS All-constellation Multi-frequency RTK/INS Integrated Positioning ModuleUM981 is Unicore's new-generation proprietary RTK and INS integrated navigation modu

  • Frequency： GPS L1C/A, L1C, L2C, L2P(Y), L5 BDS B1I, B2I, B3I, B1C, B2a, B2b GLONASS G1, G2, G3 Galileo E1, E5a, E5b, E6 QZSS L1C/A, L1C, L2C, L5, L6 NavIC L5 SBAS L1C/A
  • Channel： 1408 channels, based on NebulasIV
  • Baud rate： 115200
  • Communication Interface： UART TTL
  • Data Format： NMEA-0183, Unicore
  • Data Update Rate： 100 Hz (IMU RAW Data) 50 Hz* (RTK)
  • RTK (RMS)： Horizontal: 0.8cm+1ppm Vertical: 1.5cm+1ppm
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Features

Based on Unicore's proprietary GNSS SoC NebulasIV that integrates RF, baseband and high-precision algorithm
All-constellation multi-frequency RTK engine and advanced RTK technology
Instant RTK initialization technology
60 dB narrowband anti-jamming and jamming detection
Heading2 technology to provide heading information
STANDALONE single-station high-precision positioning technology
Supports B2b-PPP and E6-HAS
On-board MEMS integrated navigation and U-Fusion technology to ensure continuous positioning when loss of lock on GNSS signals occurs

Technical Specifications

B2I/B2a/B2b/L5/E5a/E5b Code10 cm10 cm10 cm10 cm
B2I/L2P(Y)/L2C/G2/E5b Carrier Phase1 mm1 mm1 mm1 mm
B3I/B2a/E5a/L5 Code10 cm10 cm10 cm10 cm
B3I/B2a/E5a/L5 Carrier Phase1 mm1 mm1 mm1 mm
Time Accuracy (RMS)20 ns
Velocity Accuracy (RMS)0.03 m/s
Cold Start< 12 s
Initialization Time< 5 s (typical)
Initialization Reliability> 99.9%
Data Update Rate100 Hz (IMU RAW Data)
50 Hz* (RTK)
Differential DataRTCM V3.X
Data FormatNMEA-0183, Unicore
Physical Characteristics



Packaging54 pin LGA


Dimension17.0 × 22.0 × 2.6 mm


Weight1.91 g ± 0.03 g


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



2 x UART (LVTTL)(UM981)



3 x UART (LVTTL)(UM981S)



1 x I2C*



1 x SPI*



1 × CAN*(UM981)



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




UM981S_User Manual.PDF

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