4G LTE Telemetry
Fly autonomous missions from anywhere with cell coverage.
LTE Telemetry System
System Architecture
Raspberry Pi Zero 2W
Companion Computer
A quad-core ARM processor running Linux bridges the flight controller and the cellular network. It translates MAVLink serial data to UDP packets and routes them over the LTE connection.
Huawei E3372
4G LTE Modem
A USB LTE modem provides the cellular data link. It connects to standard mobile networks and creates a network interface that the Pi uses to tunnel MAVLink traffic to the ground station.
MAVLink Protocol
Telemetry & Command
The same MAVLink protocol used by the serial radio link runs over the cellular connection. No custom software needed — QGroundControl and Mission Planner work exactly as they do with a traditional radio.
Beyond Visual Line of Sight
Traditional radio telemetry is limited to 1–2 km in practice — even long-range systems fade beyond 10–15 km. The Stork's 100 km range demands a telemetry solution that matches.
4G LTE solves this by routing telemetry through cellular infrastructure. Anywhere you have cell service, you have full command and telemetry — real-time position, battery voltage, airspeed, altitude, and the ability to upload new waypoints mid-mission.
Dual-Link Safety
The LTE link doesn't replace the ELRS radio — it supplements it. During visual-range operations, the pilot retains direct RC control via ExpressLRS. The LTE link runs in parallel, providing telemetry and waypoint management.
If the LTE connection drops, ArduPilot continues executing its waypoint mission autonomously. If both links are lost, the configurable failsafe triggers RTL — return to launch using GPS navigation.
Command From Anywhere
Full telemetry and mission control over cellular networks — no range limit but coverage.
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