DJI O4 Ground Station

The DJI O4 Ground Station removes the main obstacle to automated drone operations: signal coverage. In a mission flown from a DJI Dock 3 and DJI FlightHub 2, the aircraft is no longer what limits the flight; the range and stability of the video link are. Obstacles, terrain and distance create blind spots that interrupt the feed and shrink the operating radius. Deployed as a relay or as a cloud gateway, the O4 Ground Station extends that coverage: your drones fly further, in more places, with a reliable link. An example documented by DJI: in a dense urban environment, a dock on its own reached 4.2 km; with an O4 Ground Station mounted high up, the range was extended to more than 11 km while keeping a full signal.

Gateway Mode: deploy your stations where your drones fly

Until now, each relay station was paired with a single dock and had to stay close to it. Gateway Mode removes that constraint: the station connects directly to the FlightHub 2 cloud (Ethernet, or 4G via the DJI Cellular Dongle 2), without being paired with a dock.

• No distance or line-of-sight constraint with the dock: position the station where coverage is useful, not where the dock happens to be.
• On-the-fly selection: before each mission, choose the station closest to the flight area. Combine several docks and several stations for meshed coverage.
• Dedicated, stable bandwidth for the drone, without deploying a private 4G network.

Relay Mode: extend the dock’s range, even without a network

In Relay Mode, the station acts as a remote antenna. Installed high up (mast, rooftop, ridge), ideally less than 1 km from the dock, it extends the transmission area, especially near structures that block the signal. No internet connection is required: a PoE power supply is enough. It is the solution for remote sites with poor network coverage. Relay Mode works with the DJI Dock 3, the Matrice 400, the Matrice 4E, the Matrice 4T and the Matrice 4D / 4TD with the DJI RC Plus 2 Enterprise.

Up to 25 km range in Europe: fewer blind spots

The RF unit offers better signal penetration and range than the D-RTK 3 (receive gain of about +3 dB on average and up to +6 dB peak at 5.8 GHz, according to DJI). Its 12 antennas, 4 external OcuSync 4 Pro directional antennas and 8 internal ones, provide high-gain coverage whatever the drone’s orientation. Under the CE standard, range reaches 25 km with the Matrice 400 (sub2G band, Relay Mode) and 18 km with the other compatible drones; between the station and the remote controller or the Dock 3, DJI recommends 300 m (1 km at most). Multi-constellation GNSS (GPS, BeiDou, Galileo, GLONASS, QZSS) provides centimetre-level RTK positioning to the drone in both modes. For you: cover large or linear sites (reservoirs, pipelines, large campuses) with fewer stations.

Signal Map: deploy in the right place, based on real data

FlightHub 2 builds a hexagonal coverage map (signal strength shown as a colour gradient) from the data of your actual flights, updated after each mission. In the virtual cockpit, the pilot is warned so as to avoid areas with a weak signal. You place your stations where they are genuinely useful, based on measurements rather than guesswork.

Airspace safety: Remote ID and ADS-B receivers

Via ESDK 2.0, the O4 Ground Station can host a Remote ID and ADS-B receiver that detects nearby drones and crewed aircraft in real time, with configurable alerts and detection radius. An asset for situational awareness during beyond visual line of sight (BVLOS) flights and infrastructure monitoring missions.

Third-party cameras: drones and fixed cameras in a single platform

In Gateway Mode, connect up to 4 streams from ONVIF or GB/T 28181 (H.264) compatible IP cameras to FlightHub 2 through the station: live viewing, PTZ control and alerts. You bring your fixed video surveillance and your drones together in a single operational interface.

Matrice 400 delivery mode: drone logistics

According to DJI, the O4 Ground Station supports the Matrice 400 delivery mode: payload transport missions, multi-point routes and remote dispatch via FlightHub 2, for medical and sample transport, document delivery or hard-to-reach sites.

Reliable in all weather, in continuous operation and off-grid

• IP67 and IK07: waterproofing and impact resistance for permanent outdoor installation, with built-in surge protection.
• -40 to 55 °C (-40 °C requires PoE IEEE 802.3bt Type 4 power and a windless environment) and up to 6,000 m altitude.
• Built-in backup battery: about 45 minutes in Gateway Mode and 30 minutes in Relay Mode during a power cut, followed by automatic restart.
• Low-power mode (7 W) for long-term autonomous deployments.
• Fanless design with no moving parts.

Deployment example: full coverage of a reservoir

In a case documented by DJI, 1 dock and 3 O4 Ground Stations are enough to cover a reservoir of about 250 km² with 58 km of shoreline, previously riddled with blind spots. Result reported by DJI: a complete inspection round in 20 minutes, inspection efficiency improved by more than 80 % and labour costs reduced by 70 %.

O4 Ground Station or D-RTK 3?

Compared with the D-RTK 3 Multifunctional Station, the O4 Ground Station offers greater signal range and penetration, goes from 4 to 12 antennas and adds the sub2G band, Gateway Mode, third-party cameras, Remote ID and ADS-B receivers and low-power mode. However, it does not replace the D-RTK 3 as a base station or in mobile mode (Base and Rover), and the two cannot be used as relays on the same Dock 3.

Installation and commissioning

1. Activate the station with the DJI Enterprise App on an Android smartphone, over USB-C. The battery’s first charge is done via USB-C PD or PoE.
2. Choose the site: more than 200 m from sources of electromagnetic interference and more than 0.5 m from any metal structure, with a cable of 100 m at most. In Gateway Mode, place the station at the edge of the dock’s coverage based on the Signal Map; in Relay Mode, high up, ideally less than 1 km from the dock.
3. Mount the station on a wall or a pole, then connect an outdoor Cat 6 Ethernet cable and an earth connection of less than 10 ohms.
4. Calibrate the station’s position, preferably with network RTK, then update the firmware via FlightHub 2 or DJI Assistant 2.
5. Inspect the installation every 6 months: obstructions, mountings, cables.

What’s in the box

• 1 x DJI O4 Ground Station
• 1 x USB-C to USB-C cable
• 2 x Ethernet connectors
• 4 x expansion bolts (wall plugs)
• 1 x drilling template (installation card)
• 1 x screw and tool kit

Technical specifications

The DJI O4 Ground Station is eligible for the DJI Care Enterprise Plus programme (coverage available in the EU). Drone Parts Center, authorised DJI Enterprise dealer, helps you size the station and integrate it into your fleet: request a coverage study tailored to your sites.