DJI D-RTK 3 Relay Fixed Deployment Version for DJI Dock 3

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DJI D-RTK 3 Relay Fixed Deployment Version – Precision GNSS for DJI Dock 3 Operations

The DJI D-RTK 3 Relay Fixed Deployment Version is an essential component for enhancing the accuracy, range, and reliability of autonomous drone missions executed via DJI Dock 3. Designed specifically to support fixed, long-range, and elevated deployments, this upgraded RTK station combines centimeter-level GNSS positioning with relay signal capability, ensuring optimal transmission conditions and seamless docking workflows.

This powerful and compact ground-based solution is ideal for industrial use cases such as infrastructure inspection, border surveillance, disaster response, energy sector monitoring, and 24/7 remote drone operations. By integrating it into your DJI Dock 3 system, operators benefit from a reliable, redundant, and efficient RTK solution that supports consistent drone takeoffs and landings—day or night, rain or shine.


High-Precision GNSS Performance

At the core of the D-RTK 3 Relay system is DJI’s advanced multi-frequency GNSS module, supporting GPS, GLONASS, Galileo, and BeiDou. The fixed deployment version is engineered to deliver centimeter-level positioning accuracy, even in complex terrain or challenging GNSS environments.

With this relay deployed at an optimal elevation, it effectively reduces GNSS errors, supports real-time corrections, and improves drone stability—essential for autonomous operations requiring pinpoint positioning.


Built-in Relay Function for Enhanced Signal Transmission

Unlike traditional GNSS base stations, the D-RTK 3 Relay Fixed Deployment Version includes an integrated signal relay function, enabling robust communication between the drone, the dock, and the control center—even when line-of-sight is partially obstructed or when deploying across large sites.

By acting as a relay hub, it extends video transmission range and minimizes the need for a direct connection between the operator and the aircraft. This is especially valuable in large-scale industrial sites, construction zones, and remote deployments, where signal strength and reliability are mission-critical.


Optimized for DJI Dock 3 Integration

The D-RTK 3 Relay was purpose-built to complement DJI Dock 3, enabling the Matrice 4 Series drones (like the DJI M4D and DJI M4TD) to perform precision landing and autonomous missions with real-time kinematic accuracy.

It supports automatic docking and takeoff functions without user intervention, greatly improving deployment flexibility while reducing the number of field personnel required. When mounted at elevated points such as rooftops, poles, or towers, it ensures a broader coverage radius and better operational control.


Flexible Deployment Options

This version is designed for permanent installation, making it ideal for fixed-location operations. With IP65-rated durability, it’s protected against dust, rain, and harsh environmental conditions. A durable housing and weatherproof components make it reliable for long-term outdoor use in demanding industrial or field environments.

The unit can be easily integrated into existing infrastructure and supports both wired and wireless connectivity options, depending on the scale and layout of your project site.


Seamless Real-Time Corrections

Using real-time kinematic corrections, the D-RTK 3 Relay constantly feeds positional data to the DJI Dock 3 system and the Matrice 4 Series drones, enabling precise localization during all mission phases—including takeoff, landing, waypoint navigation, and terrain-following missions.

This makes it a vital component for use cases that demand repeatable precision, such as automated inspection routes, mapping grids, and night-time monitoring, where visual markers alone are insufficient.


Industrial Applications

The D-RTK 3 Relay Fixed Deployment Version is ideal for industries that require highly accurate, automated drone operations:

  • Public Safety and Border Security: Continuous aerial surveillance across borders or critical infrastructure.

  • Construction and Mining: Real-time site mapping and equipment monitoring in large, complex environments.

  • Utilities and Energy: Monitoring solar farms, pipelines, transmission towers, and offshore installations.

  • Agriculture: Supporting fixed-location drone stations for crop health mapping and automated surveys.

  • Disaster Response: Deploying autonomous drones from fixed locations for rapid assessment and SAR operations.

    Why Use the DJI D-RTK 3 Relay?

    • Uninterrupted Connectivity: Ensures stable drone and dock communication, even in complex environments.

    • Autonomous Operations: Supports fully automated takeoff and landing via DJI Dock 3.

    • High Accuracy: Real-time kinematic corrections enhance flight precision and route reproducibility.

    • Fast Setup: Deploy quickly with DJI Enterprise App and intuitive smartphone interface.

    • Minimal Maintenance: Designed for long-term fixed deployment with minimal intervention.

    • Maximum ROI: Reduces manpower requirements and enhances operational automation.


    Complete Dock 3 Ecosystem Support

    The D-RTK 3 Relay is not just a standalone enhancement—it’s a vital part of the DJI Dock 3 autonomous ecosystem, which includes:

    • DJI Dock 3: Automated drone station for remote operations.

    • DJI Matrice 4 Series Drones: Compatible with both M4D and M4TD for day/night missions.

    • DJI FlightHub 2: Live mission planning, data analysis, and team coordination platform.

    • DJI Modify & Terra: For 3D modeling and data processing.

    Together, they form a complete end-to-end remote operations solution with unmatched efficiency and safety.

    Specs

    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
      Base Station 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/DJI Dock 3: 1 km

      SRRC
      Between the aircraft and the relay station: 12 km
      Between the relay station and the remote controller/DJI Dock 3: 1 km

      CE
      Between the aircraft and the relay station: 10 km
      Between the relay station and the remote controller/DJI Dock 3: 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 (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 (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.
    • Relay Station Range Extension Effect

    • Relay Station Performance Enhancement:
      Severe obstruction (e.g., buildings, mountains): 3x to 5x performance improvement
      Mild obstruction (e.g., trees, glass): 1x to 3x performance improvement

      The relay station must be deployed in an elevated, unobstructed location free of interference.
    • Antenna

    • OcuSync 4 directional antennas× 4, 2T4R

      The antenna uses a standard reverse polarity SMA connector.
    • Others

    • D-RTK 3 Relay Fixed Deployment Version: Compatible with DJI Cellular Dongle 2

    Electrical Properties

    • Power

    • D-RTK 3 Multifunctional Station:
      Relay Station: 14.5 W*
      Base Station: 7 W
      Rover Station: 6.2 W

      * Maximum power consumption without heating. When connected to a USB-C power supply above 9V, maximum power consumption with heating is 36.5 W.

      D-RTK 3 Relay Fixed Deployment Version:
      Relay Station: 14.5 W**

      ** Max power consumption without heating. When connected to a PoE power supply of Type 4, maximum power consumption with heating is 36.5 W.
    • Power Output Port

    • D-RTK 3 Multifunctional Station: USB Type-C
      D-RTK 3 Relay Fixed Deployment Version: USB Type-C and Ethernet Port (PoE)
    • Supported Power Adapter

    • D-RTK 3 Multifunctional Station:
      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.

      D-RTK 3 Relay Fixed Deployment Version:
      DJI Dock 3 PoE Output Port
      Third-party PoE Power Supplies:
      IEEE 802.3bt Type 4 (PoE++): 52 V to 57 V output, 99.9 W max
      IEEE 802.3bt Type 3 (PoE++): 50 V to 57 V output, 60 W max
      IEEE 802.3at Type 2 (PoE+): 50 V to 57 V output, 30 W max
    • Battery Operating Time (Under Normal Temperature)*

    • D-RTK 3 Multifunctional Station:
      Relay Station: 4 hrs
      Base Station:7 hrs
      Rover Station: 10 hrs

      D-RTK 3 Relay Fixed Deployment Version:
      Relay Station:4 hrs**

      * Battery performance may decrease in low temperatures; it is recommended to use power adapters that support the USB PD 3.0 protocol.
      ** When powered by PoE, the device battery enters preservation mode and does not fully charge. Upon PoE disconnection, the built-in battery delivers up to 2 hours of runtime.
    • Ethernet Cable Requirements

    • D-RTK 3 Multifunctional Station:
      Ethernet not supported

      D-RTK 3 Relay Fixed Deployment Version:
      Requires Cat 6 twisted-pair cable, ≤100m length, 6-9mm outer diameter.
    • Battery

    • LiPo
      Capacity: 6500 mAh
      Energy: 46.8 Wh

    Physical Characteristics

    • Operating Temperature

    • D-RTK 3 Multifunctional Station: -20° to 55° C (-4° to 131° F)
      D-RTK 3 Relay Fixed Deployment Version: -30℃ to 55° C (-22° 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.
      4. When connected to Type 4 PoE power, the D-RTK 3 Relay Fixed Deployment Version enables heating for low-temperature startup.
    • Altitude

    • 6000 m
    • Protection Rating

    • D-RTK 3 Multifunctional Station: IP67*
      D-RTK 3 Relay Fixed Deployment Version: IP67**

      * Please ensure all rubber seals are securely installed for optimal performance.
      ** The rubber seal on the PoE input port of the Fixed Deployment Version provides IPX5-rated protection. IP67 protection requires installation of the dedicated PoE port connector and cable.
    • Drop Resistance

    • D-RTK 3 Multifunctional Station: 2 m drop with pole
    • Dimensions

    • D-RTK 3 Multifunctional Station: 163 mm × 89 mm (without OcuSync Directional Antennas)
      D-RTK 3 Relay Fixed Deployment Version: 163 mm × 344 mm
    • Weight

    • D-RTK 3 Multifunctional Station: Approx. 1.26 kg (2.78 lbs)
      D-RTK 3 Relay Fixed Deployment Version: Approx. 2.24 kg (4.94 lbs)

    1x DJI D-RTK 3 Relay Fixed Deployment Version for Dock 3


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