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SparkFun RTK Facet L-Band

SparkFun RTK Facet L-Band is designed for high-precision geolocation and surveying. This RTK Facet L-Band utilizes corrections from u-blox's Point perfect service broadcast from a geosynchronous Inmarsat satellite. WiFi SSID and password are the only setups required for RTK Facet L-Band. Once entered, this device will provision itself and periodically (once a month) update the decryption keys necessary to use the PointPerfect service. Under the hood of this RTK Facet L-Band is an ESP32 WROOM. This ESP32 WROOM is connected to a ZED-F9P GNSS receiver, a NEO-D9S L-Band receiver, and a variety of peripheral hardware (LiPo fuel gauge, and microSD). The RTK Facet L-Band features GNSS receiver ZED-F9P, satellite data receiver NEO-D9S, and Bluetooth® transceiver ESP32 WROOM.

Under the dome of the RTK Facet L-Band is a surveyor-grade L1/L2/L-Band antenna. This antenna is a unique combination of elements designed to receive the GNSS signals (L1/L2) alongside the 1.55GHz PointPerfect corrections. The RTK Facet L-Band works with common GIS software including SW Maps, SurvPC, Field Genius, and any GIS software that supports NMEA over Bluetooth®.

Features

  • Enclosed Facet Design IP53:
    • Protected from limited dust ingress and water spray
  • Internal Antenna:
    • L1/L2/L-Band with ≥5dBi gain
  • Internal Battery:
    • LiPo 6Ah with fast 1 amp charging
  • Qwiic Port:
    • Supports I2C based add-on devices
  • microSD:
    • Compatible up to 32GB
  • Embedded OLED Display for positional accuracy, available satellites, and data logging
  • Single push button control
  • 598g (1.3lbs) weight
  • Works with common GIS software: 
    • SW Maps, SurvPC, and Field Genius
  • GNSS Receiver: ZED-F9P
    • Concurrent reception of GPS, GLONASS, Galileo, and BeiDou
    • Receives both L1C/A and L2C bands
    • 184-channel u-Blox F9 engine
    • 25s (cold) and 2s (hot) time to first fix
  • Satellite Data Receiver: NEO-D9S
    • Receives PMP messages from Inmarsat geosynchronous satellites
    • SESTB28A L-Band data receiver compliance
  • Bluetooth® transceiver: ESP32 WROOM
    • Xtensa® dual-core 32-bit LX6 microprocessor
    • Integrated 802.11 BGN WiFi transceiver
    • Integrated dual-mode Bluetooth® (classic and BLE)
    • Hardware accelerated encryption (AES, SHA2, ECC, RSA-4096)

Specifications

  • Satellite Data Receiver: NEO-D9S
    • 133dBm sensitivity
    • <10s time to the first frame
    • 35mA to 130mA current (varies during acquisition and tracking state)
    • 1525MHz to 1559MHz frequency range
  • Bluetooth® transceiver: ESP32 WROOM
    • Up to 240MHz clock frequency
    • 16MB of flash storage
    • 520kB internal SRAM
    • 2.5µA deep sleep current
  • 3.3V TTL Serial (57600bps RTCM TX/RX) radio port
  • 3.3V TTL Serial (115200bps NMEA) data port
  • 136mm x 146mm x 80mm (5.35in x 5.74in x 3.14in) dimensions
  • GNSS receiver: ZED-F9P
    • 68mA to 130mA current (varies with constellations and tracking state)
    • 50km (31 miles) max altitude
    • 500m/s (1118mph) max velocity
       

Kit Contents

  • 1x RTK Facet L-Band
  • 1x RTK Facet carrying case
  • 1x Antenna thread adapter - 1/4in. to 5/8in.
  • 1x Breadboard to GHR-04V cable - 4-Pin x 1.25mm pitch
  • 1x GHR-04V to GHR-06V cable - 1.25mm pitch
  • 1x USB A to C cable - 0.8m
  • 1x USB wall charger - 5V, 2A

Additional Resources

Publicado: 2022-07-21 | Actualizado: 2023-02-06