Atgriezties DFRobot

DFRobot GNSS-RTK High Precision Positioning Kit

DFRobot GNSS-RTK High Precision Positioning Kit is an advanced navigation solution engineered to deliver 5cm + 1ppm centimeter-level accuracy over a wide 15km to 20km operational range. This Kit supports multiple satellite systems and uses a 4G module to connect to the internet for obtaining positioning correction data. The GNSS-RTK kit operates on the principle of Network Real-Time Kinematic (RTK) and an onboard 4G module to receive RTCM correction data from a CORS network. The GNSS module simultaneously supports receiving signals from GNSS, GPS, GLONASS, Galileo, BDS, and QZSS satellites. This kit tracks GPS L1 C/A, GLONASS L1, Galileo E1, BDS B11, QZSS L1 C/A, GPS L5, Galileo E5a, BDS B2a, and QZSS L5 frequency bands.

The GNSS-RTK kit features a flexible Gravity I2C/UART interface and a multi-band (L1/L5) and multi-constellation module that achieves rapid convergence in under 10s. Typical applications include autonomous vehicle guidance, high-precision asset tracking, and geospatial trajectory acquisition.

Features

  • Wide-area network RTK coverage
  • Robust multi-constellation and multi-band reception
  • Simplified deployment and integration

Applications

  • Autonomous rover - build a rover, autonomous lawnmower, or delivery bot that navigates with pinpoint precision
  • Asset tracking - create a high-precision tracker for fleet vehicles, expensive equipment, or even a lost drone
  • Data logging - map a precise trajectory, conduct simple land surveys, or create a set of fixed monitoring points for science projects
  • Outdoor robotics - give any outdoor robot a reliable, centimeter-level understanding of its position

Specifications

  • 3.3V to 5V gravity interface (power interface)
  • 4G module power Type-C
  •  I2C/UART output signal
  • SMA antenna interface
  • Reception bands:
    • L1 C/A and L5 GPS/QZSS
    • L1 GLONASS
    • E1 and E5a Galileo
    • B1l and B2a BDS (BeiDou)
  • GPS + GLONASS + Galileo + BDS + QZSS default constellations
  • 4+ QGNSS concurrent tracking constellations
  • SBAS:
    • WAAS
    • EGNOS
    • MSAS
    • GAGAN
  • RTK function
  • Horizontal positioning accuracy:
    • Autonomous: 1m
    • RTK: 5cm + 1ppm
  • 0.03m/s velocity accuracy
  • 20ns 1PPS accuracy
  • < 10s RTK convergence time
  • Sensitivity:
    • -145 dBm acquisition
    • -165 dBm tracking
    • -157 dBm reacquisition
  • Dynamic performance:
    • 10000m maximum altitude
    • 500m/s maximum velocity
    • 4g maximum acceleration
  • 1Hz navigation update rate (RTK)
  • 1Hz raw data output rate (GNSS)
  • NMEA 0183 / RTCM 3.x protocol
  • 380g weight

Positioning Flowchart

DFRobot GNSS-RTK High Precision Positioning Kit

Wiring Diagram

DFRobot GNSS-RTK High Precision Positioning Kit
Publicēts: 2026-01-23 | Atjaunināts: 2026-02-03