Budget UM980 GNSS RTK CORS Fanless Station

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 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. 

Budget UM980 GNSS RTK CORS Station features:

• Fanless setup, passive cooling
• Build-in RF splitter for direct connection in multi-receiver setup
• Raspberry-PI RPI Zero 2 W
• RP3A0 SoC, ARM Cortex-A53@1GHz
• WiFi 2.4 GHz 802.11n
• ELT_RtkBase full-featured software
• ELT_RTKBase User Guide
• microSD card 32GB with pre-installed software and documentation
• GNSS antenna input with SMA connector
• USB C receiver port, USB C power in port 
• Power LED, GNSS LED, Internet LED and NTRIP LED
• Backup supercapacitor
• Dimensions 100x100x22.5 mm
• Weight: 140 gr.
• Fully assembled and ready to use

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 Nebulas 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/L6*
• 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.

CORS Station recommended to be used in Base Operation Mode!

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