The SparkFun RTK Reference Station – Information


A LATE Thursday submit about our latest RTK Surveying instrument that’s now out there!





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It ought to come as no shock that we love surveying instruments and we put a number of pleasure and energy into these we create right here at SparkFun Electronics. Due to all of you who use our RTK Surveyors, Expresses, or Aspects, we have been proven a path and drive to create extra choices so that you can use. As we speak, we announce our latest product to hitch this line primarily based in your suggestions. Meet the SparkFun RTK Reference Station!

The SparkFun RTK Reference Station is the right answer on your high-precision geolocation, surveying, and time reference wants. For fundamental customers, it’s extremely simple to arrange a hard and fast location NTRIP server, enabling RTK for rovers and whilst an NTP server for tools synchronization and an astoundingly correct time base.

RTK is brief for Actual Time Kinematics. A satellite tv for pc positioning receiver able to RTK takes within the regular indicators from the World Navigation Satellite tv for pc Methods (GNSS) together with a correction information stream to attain improved positional accuracy. GNSS consists of satellites from GPS (USA), GLONASS (Russia), Beidou (China), Galileo (Europe), plus particular extra satellites (e.g., SBAS and QZSS). On their very own, these indicators will ship ~30cm positional accuracy. An RTK receiver takes in an extra Actual Time Correction Message (RTCM) information stream after which calculates the machine’s location with 1cm accuracy in real-time. RTK works greatest when the correction information is generated regionally; the ‘Rover’ receiver accuracy degrades as the gap (baseline) between it and the ‘Base’ producing the corrections will increase. With just some minutes of setup, the SparkFun Reference Station lets you generate that correction information regionally and share it by way of Ethernet!

Internal circuitry of the RTK Reference Station

Below the hood, the Reference Station relies on the ESP32-WROOM processor and u-blox ZED-F9P multi-band GNSS module. It runs the identical open-source firmware as our different RTK merchandise. The Reference Station has 10/100 Mbps Ethernet connectivity and it may be powered by Energy-over-Ethernet (PoE). The microSD card is linked by way of a 4-bit SDIO interface, offering an order of magnitude enchancment in learn and write pace. Equally, the u-blox ZED-F9P GNSS module is linked by way of a high-speed SPI interface, additionally offering an order of magnitude enchancment within the GNSS information switch pace. Wish to log RAWX and SFRBX from all constellations at 20Hz? With this product, you’ll be able to! We additionally included an ATECC608A crypto co-processor if you wish to write your individual firmware and use the Reference Station for crypto mining/area climate station purposes or to safe/authenticate your GNSS information.

This machine can be utilized in a number of modes, together with:

  • GNSS Base Station with NTRIP – RTCM corrections are despatched to a Caster over Ethernet
  • Community Time Protocol (NTP) Server – offering high-accuracy timing information to different machines by way of an Ethernet community

These two modes are those most customers will need to use, however you by no means stop to amaze us with the number of methods you utilize our merchandise. Must you need to, the Reference Station can be used as:

  • GNSS Positioning Receiver (~30cm accuracy) – also called ‘Rover’
  • GNSS Positioning with RTK (1.4cm accuracy) – also called ‘Rover with RTK Repair’ – utilizing NTRIP RTCM correction information over Ethernet or out of your cellphone by way of Bluetooth
  • GNSS NMEA/UBX TCP Consumer – sending NMEA and/or UBX navigation information to a distant server utilizing TCP over Ethernet
The RTK Reference Station Yardsale!

The RTK Reference Station comes with every part it’s essential to rise up and operating. Our package consists of:

  • Cased Reference Station
  • L1/L2/L5 GNSS Surveying Antenna
  • Strengthened RG58 TNC-SMA Cable
  • SMA WiFi / Bluetooth Antenna
  • 32GB microSD Card
  • USB-C Energy Provide (wall charger)
  • USB-C Cable
  • Ethernet Cable

What else would possibly you want? Nicely, it will depend on the place you’ll set up and use your Reference Station. One apparent place can be up in your roof the place your antenna can have the perfect view of the sky. Wherein case you want some {hardware} to assist mount the antenna:

Lastly, please see the Hookup Information for extra particulars on which configurations we have tried and examined.


And that is it for at present! Ensure that to verify again tomorrow the place Nathan stops by to showcase the package in a bit of deeper element. You might take into account the video that we have put collectively as details about the RTK Reference Station straight from the horse’s mouth. Thanks for stopping by and we’re extraordinarily excited to see what you make with this new surveyor. We’ll see you tomorrow!

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