Configuring the RTK kit settings

When using the RTK kit (sold separately) to perform RTK positioning, you can configure the setting of the reference station for RTK positioning and adjust the offset value from the antenna unit for aircraft to the center position of the camera's image sensor from the setting menu on the flight screen.

  1. Tap [Start flight] on the “Airpeak Flight” App Home page.

    The flight screen will be displayed.

  2. Tap (Settings) in the top right of the screen.
  3. Tap [RTK] in the displayed setting menu.
  4. Configure various settings.

    [Systems]

    • [Reference station]: Selects the reference station (base station or network station) referred to for RTK positioning. You can select through which remote controller positioning is performed in dual operation mode.
    • [Adjust geotag shoot position information]
      • [Adjust to the image sensor position]: Adjusts the shooting position to match the center position of the camera's image sensor instead of the center position of the aircraft. When using a supported camera, an appropriate offset value is used by default. For more accurate positioning, you can set the actual measured value from the aircraft position to the image sensor position of the camera. For how to measure actual values, refer to the guide in the “Airpeak Flight” App.
      • [Optional: Adjust from the image sensor position to the camera's optical center position]: The shoot position information, initially adjusted to the image sensor position, is further refined to the optical center position of the camera along the optical axis direction. This setting of the shoot position information to the camera's optical center position may improve the accuracy of the generated model, depending on the SfM software used.

      Note

      • The appropriate shoot position information for modelization may differ depending on the SfM software used. Please confirm the SfM software you are using and adjust the shoot position information accordingly.
        When adjusting from the image sensor position to the exit pupil position, enter the lens's exit pupil position in the [Lens focal length [mm]] field.

    [Base station]

    • [Position]: The base station position is set either automatically or manually.
      • [Position] for the base station returns to [Not set] when the base station is removed from the remote controller or when the remote controller is turned off or enters a standby state. You can display the previously set value by tapping [Settings] when [Set position manually] is used. To use the same position setting, tap [Apply] while the previously set value is displayed.
      • When setting [Altitude] in [Set position manually], enter the total value of (a), (b), and (c) below.

        (a) The distance from the bottom of the antenna unit for base station (antenna reference point) to the antenna phase center = 0.124 m (0.406 feet)

        (b) The distance from the known coordinate position to the bottom of the antenna unit for base station.
        When using a tripod, add the dimensional values shown on the specification sheet for the tripod or values measured with high accuracy.

        (c) The ellipsoidal height at the known coordinate location where the antenna unit for base station is installed

    • [Detect movement or falls]: You can enable or disable a function that detects when the base station is moved or tips over. This function depends on the GNSS reception environment.

    [Network station]

    • [Set NTRIP server]: Specifies the server used for the GNSS correction service. The GNSS correction service requires a contract with the distributor. For information such as service contents and usage methods, please contact the distributor.

Note

  • Automatic position setting for the base station uses estimation based on single positioning and specifies the relative accuracy of the single positioning. Also, the setting results depend on the GNSS reception environment. If you want to keep the error within centimeters, place the base station in a known coordinate position surveyed by other means and manually set the value, or use network RTK provided that the reference station accuracy meets your desired accuracy.
  • If the base station is moved during flight, it will not only prevent RTK positioning but also affect the flight path. Install the base station in a stable place and do not move it.
  • Using RTK positioning enables highly accurate repeat flight, but please note that if the reference stations when acquiring the flight log and performing repeat flight are different, highly accurate repeat flight using RTK may be impossible.
  • If you use a distant network station, you may not be able to perform RTK positioning correctly. Use a network station as close as possible to the flight area.
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