ZED-X20P RTK GNSS Raspberry PI HAT

ZED-X20P mPCIe socket All-Band all constellation GNSS receiver with IPEX (U.FL) antenna connectors. Base or Rover operation. Multi-band receiver delivers centimeter-level accuracy in seconds. Designed for easy integration in your system or robots.

The ZED-X20P module integrates all-band GNSS with signal modernization and innovative positioning algorithms using Real-time Kinematics (RTK), PPP-RTK, and Precise Point Positioning* (PPP) technologies in a compact, energyefficient form factor. As the most reliable position sensor from the most trusted name in GNSS, ZED-X20P ensures unparalleled reliability and performance.

ZED-X20P concurrently processes signals from the GPS,  Galileo, BeiDou, QZSS, and NavIC constellations accross all GNSS bands, including L-band. The highest level of integration on a single-chip receiver enables new system architectures and creates value for industrial navigation and robotics markets in products such as unmanned autonomous vehicles (UAVs), guidance systems, and auto-steering applications. With its very high update rate, the ZED-X20P module is ideal for control applications, ensuring smooth and reliable operation. For advanced users, its pristine raw data features minimal cycle slips and exceptionally low noise in carrier range and pseudo-range measurements. ZED-X20P protects system integrity with multi-layered defenses, including a Root of Trust, jamming and spoofing detection, cryptographic authentication of navigation messages through Galileo OSNMA, and more. High-value, application-specific features such as moving baseline are also available.

ZED-X20P offers support for a range of correction services natively, striking the perfect balance between performance and data usage. It supports standard RTCM corrections for Virtual Reference Stations (VRS) in a Network RTK setup or a local base station setup. SPARTN-format SSR correction service broadcasts are also supported for mass-market applications, and direct reception of PPP global services simplifies deployments.

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 
• u-center ublox 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

ZED-X20P Features:

Receiver type:

• 672-channel u-blox X20 engine
• GPS L1C/A, L2C, L5
• GAL E1B/C, E5a, E6 
• BDS B1I, B1C, B2a, B3I
• QZSS L1C/A, L1C/B*, L2C, L5, L6
• NavIC L1*, L5
• SBAS L1C/A

Nav. update rate:

• RTK up to 25 Hz

Position accuracy:

• RTK 0.01 m + 1 ppm CEP
• PPP 0.10 m CEP

Convergence time:

• RTK < 10 sec
• PPP < 120 sec 
• Acquisition Cold starts 27 s.
• Aided starts 2 s.
• Reacquisition 2 s.

Sensitivity:

• Tracking & Nav –167
• Cold starts –148 dBm
• Hot starts –157 dBm
• Reacquisition –160 dBm
• Assistance AssistNow Online
• OMA SUPL & 3GPP compliant
• TCXO Oscillator
• Anti-jamming CW detection
• Anti-spoofing Advanced anti-spoofing algorithms and OSNMA
• Built-In RTC crystal
• Flash Memory
• Moving base For attitude sensing and heading applications
• Active and passive antennas Supported
• Flash Memory