DFRobot GNSS-RTK High Precision Positioning Kits

DFRobot GNSS-RTK High Precision Positioning Kits achieve centimeter-level accuracy at the EU 868MHz and US 915MHz operating frequencies. These kits operate on the principle of Real-Time Kinematics (RTK), which involves a stationary base station to transmit real-time correction data to a mobile rover. The GNSS-RTK positioning kits support GPS, GLONASS, Galileo, BDS, and QZSS constellations. These kits incorporate Quectel's LC29HDA rover module and LC29HBS base station module, combined with LoRa wireless transmission for high-precision centimeter-level positioning. Typical applications include academic and research projects, autonomous systems prototyping, geospatial and surveying tasks, and high-value asset tracking.

Features

LoRa data transmission - utilizes LoRa wireless technology for stable, long-range, and low-power communication of RTCM correction data between the base station and rover(s)
Centimeter-level accuracy in open areas - achieves high-precision centimeter-level positioning under optimal open-sky conditions
User-friendly - designed for ease of use with a pre-configured data link, enabling rapid setup and operation right out of the box

Low cost of use - provides an accessible entry point into high-precision positioning technology, minimizing initial investment and complexity
Single base station supports multiple mobile - one base station can broadcast correction data to several Mobile units simultaneously, improving efficiency and scalability

Applications

Academic and research projects - providing an affordable platform for learning and experimenting with high-precision positioning
Autonomous systems prototyping - enabling precise navigation and path-tracking for UAVs, rovers, and agricultural robots

Geospatial and surveying tasks - facilitating accurate mapping, boundary marking, and data collection for small-scale surveying
High-value asset tracking - monitoring the exact location of equipment or personnel in open environments like construction sites or farms

Specifications

Base station:
- Power supply:
  - Type-C
  - 5V to 10V (terminal)
- SMA GNSS antenna interface
- Base station function
- Sensitivity:
  - -147dBm acquisition
  - -165dBm tracking
  - -159dBm reacquisition
Mobile:
- 3.3V to 5V operating voltage range
- I²C/UART output signal
- SMA antenna interface
- WAAS, EGNOS, MSAS, and GAGAN SBAS
- RTK function
- Horizontal positioning accuracy:
  - 1m autonomous
  - 5cm + 1ppm RTK
- 0.03m/s velocity accuracy
- 20ns 1PPS accuracy
- <10s RTK convergence time
- Sensitivity:
  - -147dBm acquisition
  - -165dBm tracking
  - -157dBm reacquisition
- 1Hz RTK navigation update rate

LoRa parameters:
- LLCC68 RF chip Semtech
- 433MHz operating frequency
- LoRa spread spectrum modulation
- 22dBm maximum TX power
- -129dBm RX sensitivity
Reception bands:
- L1 C/A and L5 GPS/QZSS
- L1 GLONASS
- E1 and E5a Galileo
- B1I and B2a BDS
GPS + GLONASS + Galileo + BDS + QZSS default constellations
4+ QGNSS concurrent constellations
Dynamic performance:
- 10000m maximum altitude
- 500m/s maximum velocity
- 4g maximum acceleration
Hz raw data update rate
NMEA 0183/RTCM 3.x protocol
92mm x 58mm x 31mm dimensions