D-RTK 3 Relay Fixed Deployment Version

DJISKU: CP.EN.00000552.01

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Description

The DJI D-RTK 3 Relay Fixed Deployment Version offers a state-of-the-art solution for extending your drone's communication range and achieving centimeter-level RTK accuracy. Exclusively built for Dock 3, this relay bridges signal gaps in obstructed areas, ensuring uninterrupted data transmission. It is powered by PoE for effortless installation and connects directly to the third port on Dock 3, providing a streamlined setup.

 Features

  • Bridges the signal to extend transmission range and coverage in challenging environments
  • Provides precise RTK positioning data for high-accuracy missions on M4D platforms
  • Powered by PoE for convenient installation and connects directly to the third port on Dock 3
  • Exclusively designed for Dock 3; operates solely in relay mode (no base or rover modes)

Outstanding Protection and Reliability

D-RTK 3 Relay Fixed Deployment Version features highly redundant and reliable hardware and software design, significantly reducing maintenance costs. Equipped with lightning surge protection and an IP67 rating, it operates stably in temperatures ranging from -30°C to 50°C. Once deployed, it can continuously perform outdoor operations with minimal intervention.

DJI D-RTK 3 Multifunctional Station a High-Precision Positioning and Relay System

Applications

  • Ideal for enhancing aerial surveying and mapping missions that require extended signal coverage
  • Perfect for infrastructure inspections and emergency response where reliable data transmission is critical
  • Useful in obstructed environments where bridging gaps in communication improves operational efficiency

Compatibility

DJI Dock 3

In the Box

1 - D-RTK 3 Relay Fixed Deployment Version

Specifications

GNSS RECEIVER

  • GNSS Frequency:
    • GPS: L1C/A, L2C, L5
    • BDS: B1I, B2I, B3I, B1C, B2a, B2b
    • GALILEO: E1, E5a, E5b, E6
    • GLONASS: L1, L2
    • QZSS: L1C/A, L2C, L5
    • L-Band
  • System Accuracy:
    • Base Station Mode (Broadcast Mode) and Relay Station Mode:
      • Base Station Accuracy: 
        • Single Point Accuracy (Uncalibrated):
        • Horizontal: 1.5 m (RMS)
        • Vertical: 3.0 m (RMS)
      • Satellite-Based Differential Accuracy:
        • Convergence Time: 20 mins
        • Horizontal: 30 cm (RMS)
        • Vertical: 40 cm (RMS)
      • Network RTK Calibration**:
        • Horizontal: 1.0 cm (RMS) + 1 ppm
        • Vertical: 3.0 cm (RMS) + 1 ppm
    • Rover Station Mode*:
      • RTK Accuracy (Fixed Survey):
        • Horizontal: 0.8 cm (RMS) + 1 ppm
        • Vertical: 1.5 cm (RMS) + 1 ppm
      • RTK Accuracy (Tilt Survey)***:
        • Angle Range: 0° to 60°
        • Horizontal: 8 mm + 0.7 mm/° tilt (accuracy <2 cm within 30°)

* Measurement accuracy depends on various factors. This value is obtained under normal conditions with an unobstructed view, good satellite distribution, low ionospheric activity, and no electromagnetic interference or multipath effects.
** Base station calibration coordinate accuracy depends on various factors. For surveying, high-precision flight paths, etc., it is recommended to calibrate during periods of inactive ionosphere, in open, unobstructed environments with no electromagnetic interference or multipath effects, using four or more GNSS systems.
*** Intense vibrations and rapid rotations can affect the accuracy of the inertial measurement unit.

  • Satellite-Based Precise Point Positioning*:
    • Supported Frequencies: BDS B2b, GALILEO E6, L-BAND
    • Convergence Time: 20 mins
    • Horizontal: 30 cm (RMS)
    • Vertical: 40 cm (RMS)

* Measurement accuracy depends on various factors. This value is obtained under normal conditions with an unobstructed view, good satellite distribution, low ionospheric activity, and no electromagnetic interference or multipath effects.
** Will be supported in later versions.

  • Differential Data Transmission Format:
    • When used as a base station or relay station, records RTCM 3.2 raw observation data in DAT format.
    • In rover station mode or in calibration mode for base and relay stations:
      1. Supports RTCM v3.0, v3.1, v3.2, v3.3, MSM4, MSM5, MSM6, MSM7 protocols.
      2. It is recommended to use receivers that support four or more GNSS systems.
  • Initialization Reliability:
    • >99.9%

VIDEO TRANSMISSION

  • Video Transmission System: 
    • O4 Enterprise
  • Operating Frequency:
    • Relay Station Mode:
      • O4: 2.4 GHz/5.2 GHz/5.8 GHz
    • Broadcast mode:
      • O4: 2.4 GHz/5.8 GHz
    • Rover Station Mode:
      • BLE: 2.4 GHz

Operating frequency allowed varies among countries and regions. Please refer to local laws and regulations for more information.

  • Transmitter Power (EIRP):
    • 2.4000 GHz to 2.4835 GHz:
      • <33 dBm (FCC)
      • <20 dBm (CE/SRRC/MIC)
    • 5.150 GHz to 5.250 GHz:
      • <23 dBm (CE/FCC)
    • 5.725 GHz to 5.850 GHz:
      • <33 dBm (FCC)
      • <30 dBm (SRRC)
      • <14 dBm (CE)
  • Bluetooth:
    • Protocol: Bluetooth 5.1
    • Frequency: 2.400 GHz to 2.4835 GHz
    • Transmitter Power (EIRP): <10 dBm
  • Max Transmission Distance (unobstructed, free of interference)
    • Base Station Mode, Between D-RTK 3 and the aircraft:
      • FCC: 15 km
      • SRRC: 12 km
      • CE/JP: 8 km
  • Rover Station Mode:
    • Between D-RTK 3 and mobile devices: 30 m

Measured in an unobstructed outdoor environment free of interference. The above data shows the farthest communication range for one-way, non-return flights under each standard. Always pay attention to RTH reminders in the app during your flight.

  • Max Transmission Distance in Relay Station Mode (unobstructed, free of interference):
    • FCC
      • Between the aircraft and the relay station: 25 km
      • Between the relay station and the remote controller: 1 km
    • SRRC
      • Between the aircraft and the relay station: 12 km
      • Between the relay station and the remote controller: 1 km
    • CE
      • Between the aircraft and the relay station: 10 km
      • Between the relay station and the remote controller: 300 m

Measured in an unobstructed outdoor environment free of interference. The above data shows the farthest communication range for one-way, non-return flights under each standard. Always pay attention to RTH reminders in the app during your flight. The relay station should be placed in a elevated, unobstructed location to ensure clear communication between the remote controller and the aircraft.

  • Max Transmission Distance in Relay Station Mode (unobstructed, with interference):
    • Strong interference: City centers, approx. 1.5-5 km
    • Medium interference: Suburban areas, approx. 5-15 km
    • Micro interference: Remote areas/seasides, approx. 15-25 km

Data is tested under FCC standards in unobstructed environments of typical interference. Only to serve as a reference and provides no guarantee as to the actual flight distance.

  • Max Transmission Distance in Relay Station Mode(obstructed, with interference):
    • Low Interference and Obstructed by Buildings: approx. 0-0.5 km
    • Low Interference and Obstructed by Trees: approx. 0.5-3 km

Data is tested under FCC standards in unobstructed environments of typical interference. Only to serve as a reference and provides no guarantee as to the actual flight distance.

  • Antenna:
    • OcuSync 4 directional antennas× 4, 2T4R

The antenna uses a standard reverse polarity SMA connector.

ELECTRICAL PROPERTIES

  • Power:
    • Relay Station: 14.5 W (max power consumption without heating; max 36.5 W with heating)
    • Base Station: 7 W
    • Rover Station: 6.2 W
  • Supported Power Adapter:
    • USB PD 3.0 protocol, output voltage 9V to 15V adapter (e.g., DJI 65W Portable Charger)

When using a non-recommended charger, such as a charger with 5V-output, the D-RTK 3 can be charged only after powering off.

  • Power Output Port:
    • USB Type-C
  • Operating Time (Under Normal Temperature)*:
    • Relay Station: 4 hrs
    • Base Station:7 hrs
    • Rover Station: 10 hrs

Battery performance may decrease in low temperatures; it is recommended to use power adapters that support the USB PD 3.0 protocol.

  • Battery:
    • LiPo
    • Capacity: 6500 mAh
    • Energy: 46.8 Wh

PHYSCIAL CHARACTERISTICS

  • Operating Temperature:
    • -20° to 55°C (-4° to 131°F)
  1. In normal temperature environments, charging power will be limited if the device shell temperature exceeds 48°C (118.4°F). Full power charging will resume after cooling.
  2. After storage/use in low temperatures, the device needs to be brought to a normal temperature environment and allowed to warm up until the internal battery temperature is >0°C (32°F) before charging.
  3. After storage/use in high temperatures, the device needs to be brought to a normal temperature environment and allowed to cool down until the internal battery temperature is <45°C (113°F) before charging.
  • Altitude:  6000 m
  • Protection Rating:  IP67*

*Please make sure all rubber plug interfaces on the body are properly installed.

  • Drop Resistance:  2 m drop with pole
  • Dimensions:  163 × 89 mm (without OcuSync Directional Antennas)
  • Weight:  Approx. 1.26 kg (2.78 lbs)

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