UM980 RTK GNSS Raspberry PI HAT

UM980 All-constellation Multi-frequency High Precision RTK GNSS receiver.

UM980 is Unicore’s new-generation proprietary high-precision RTK positioning module based on the Nebulas IV SoC which integrates RF, baseband and high-precision algorithm. The module supports GPS L1C/A/L1C/L2P(Y)/L2C/L5, BDS B1I/B2I/B3I/B1C/B2a/B2b, GLONASS G1/G2/G3, Galileo E1/E5a/E5b/E6, QZSS L1C/A/L1C/L2C/L5, NavIC L5 and SBAS L1C/A. The built-in multi-frequency anti-jamming technology enhances RTK calculation on multiple modes and frequencies, which significantly improves RTK initialization time, measurement accuracy and reliability in complex environments such as city blocks and tree shades. Relying on the excellent performance, UM980 is well suited for high-precision navigation and positioning applications such as precision agriculture, surveying and mapping and so on.

HAT features:

• Raspberry PI 40 pin extension header, supports all Raspberry PI compatible boards and Jetson Nano
• USB C connector
• Antenna input with IPEX connector
• On board low noise 3.3 V voltage regulator
• On board voltage level translators for 5V compatibility
• Time pulse LED, Power LED, RTK LED and GEO LED
• ELT_RtkBase full-featured software 
• UPrecise Unicore Evaluation Software
• Extensive visualization and evaluation features
• Backup supercapacitor
• Supports onboard battery holder for ML1220 rechargeable cell for long backup applications
• Dimensions 65x30.5x10 mm
• Fully assembled and ready to use
• ELT_RTKBase User Guide

UM980 module features:

• Based on the new generation GNSS SoC - NebulasIV, which integrates RF, baseband, and high precision algorithm
• 17.0 x 22.0 x 2.6 mm LGA package
• Supports on-chip RTK positioning calculation on all systems and multiple frequencies
• Supports GPS L1C/A/L1C/L2P(Y)/L2C/L5, BDS B1I/B2I/B3I/B1C/B2a/B2b, GLONASS G1/G2/G3, Galileo E1/E5a/E5b/E6, QZSS L1C/A/L1C/L2C/L5, NavIC L5 and SBAS L1C/A
• All-system multi-frequency RTK engine and advanced RTK technology
• Independent tracking of different frequencies and 60dB narrowband anti-jamming technology

Performance Specifications:

• Channels: 1408 channels, based on Nebula IV

Frequency

• GPS L1C/A/L1C/L2P(Y)/L2C/L5
• BDS B1I/B2I/B3I/B1C/B2a/B2b
• GLONASS G1/G2/G3
• Galileo E1/E5a/E5b/E6
• QZSS L1C/A/L1C/L2C/L5
• NavIC L5
• SBAS L1C/A

Single point positioning (RMS):

• Horizontal: 1.5 m
• Time Accuracy(RMS) - 20 ns
• Vertical: 2.5 m
• Velocity Accuracy (RMS) - 0.03 m/s

DGPS (RMS):

• Horizontal: 0.4 m
• Cold start < 12 s
• Vertcal: 0.8 m
• Initialization Time < 5 s (typical)

RTK (RMS):

• Horizontal: 0.8 cm + 1 ppm
• Initialization Reliability > 99.9%
• Vertical: 1.5cm + 1 ppm
• Data Update Rate 50 Hz* Positioning

• Differential Data - RTCM V3.X
• Data Format - NMEA-0183, Unicore

Physical Characteristics:

• Packaging: 54 pin LGA
• Dimension: 17.0 × 22.0 × 2.6 mm
• Weight: 1.88 ± 0.03 g

Environmental Specifications:

• Working temperature: -40 °C ~ +85 °C
• Storage temperature: -55 °C ~ +95°C
• Humidity: 95% No condensation
• Vibration: MIL-STD-810F
• Shock: MIL-STD-810F

Communication Interfaces:

• 3 × UART (LVTTL)
• 1 × I2C*
• 1 × SPI* (slave)
• 1 × CAN* (shared with UART3)

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

Board can be used for a Base or Rover operation mode!

• Antenna for RTK BASE station which perfectly suitable with this module.
• Ultra Light Helix Antenna for drone

• UM980 Product Brief
• UM980 User Manual
• Unicore NebulasIV Commands Reference Manual