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Robust Wide-Area Transmission System
The RF unit with high-output capabilities significantly boosts signal penetration and coverage, securing reliable links through dense urban obstructions. An optimized signal-to-noise ratio (SNR) further enhances receiver sensitivity, recovering usable signals even in complex electromagnetic environments.
Using 12 internal and external antennas with horizontal and vertical polarization, O4 Ground Station delivers omnidirectional, high-gain coverage. It can continuously and stably capture signals regardless of the aircraft's position, helping maintain a seamless communication link for wide-area operations.
To navigate congested urban RF environments, O4 Ground Station automatically shifts across sub2G, 2.4 GHz, 5.2 GHz, 5.8 GHz, and other bands [1] to help bypass interference. This delivers a crisp, stutter-free video feed, and when paired with DJI Matrice 400, supports a transmission range of up to 40 km [5].
An integrated high-gain RTK module tracks 19 frequencies across five global satellite systems. Even in challenging, semi-obstructed environments like urban canyons or dense canopies, it rapidly acquires satellite signals. This provides continuous, centimeter-level positioning data, safeguarding flight operations.
In Gateway Mode [2], O4 Ground Station connects directly to DJI FlightHub 2 [3] via Ethernet or the DJI Cellular Dongle 2 [6], delivering low-latency, high-bandwidth video feeds. This frees the station from DJI Dock 3's proximity constraints, allowing it to extend coverage up to 30 km [7].
After a flight, FlightHub 2 utilizes flight data to generate a Signal Map [8] that visually highlights weak coverage zones. This helps operators position ground stations more precisely and reinforce communication links, enhancing overall flight safety.
In Gateway Mode, operators can use the FlightHub 2 Virtual Cockpit [8] to remotely control the aircraft. Within the ground station's coverage area, pilots can manually override preset routes, enabling a flexible and fast response to multi-point task requirements.
O4 Ground Station inherits the functions of the D-RTK 3 Relay Fixed Deployment Version. In offline areas such as valleys or urban environments with severe signal obstruction, operators can switch to Relay Mode [4] and position the station at a high point to extend aircraft video transmission range.
Remote controllers or DJI Docks [9] within signal range can remotely scan and connect to O4 Ground Station [10]. This enables fast turnarounds, as a single station can service different aircraft sequentially and improve overall hardware utilization.
An IP67 rating [11] protects against water and dust, while O4 Ground Station operates reliably in temperatures from -40° to 55° C (-40° to 131° F) [12]. This robust build supports continuous, unattended operations across harsh outdoor climates.
Proprietary lightning protection components and a grounding design meet the EN/IEC 61643-21 Category C standard. This helps mitigate the risk of lightning damage when deploying the station at elevated outdoor locations such as mountains or transmission towers [13].
Fanless passive cooling and a self-recovery mechanism allow the station to automatically resume operation after power outages or software anomalies. This maintenance-free design reduces the need for manual on-site reboots and helps cut troubleshooting trips and operational costs.
In Gateway Mode, O4 Ground Station features smart power management. It automatically hibernates when no aircraft is connected, drawing only 7 W on standby [14]. For off-grid environments, the station connects to DJI Power solar solutions or third-party photovoltaic systems [15], supporting long-term operations in remote areas.
