Drone & Counter-UAS

Bench-test drone GPS failsafe & return-to-home, no flying

Bench-test drone GPS failsafe, return-to-home and GPS-denied navigation without flying. Real RF fools the actual receiver, unlike PX4/ArduPilot fault injection.

Updated 2026-07-09
A drone GPS test bench: simulator to real GNSS module to flight controller, with an injected GPS-loss event

Every drone team has the same nightmare: the aircraft that flies away when GPS glitches. Proving the failsafe actually catches it is the one test you least want to run in the air, and the free tooling everyone reaches for doesn’t really run it at all.

PX4’s failure gps off and ArduPilot’s SIM_GPS inject the fault at the software layer: they stop the GPS messages inside the simulator, but they never touch the real receiver or the RF front end. AnyLocate closes that gap by broadcasting an authentic signal into the actual GNSS module, so the hardware that flies is the hardware under test.

Test failsafe and return-to-home without flying

Bench the autopilot, feed its receiver a real fix, then script a GPS loss or a sudden position jump. The failsafe and RTH logic fire exactly as they would aloft, and you’re watching a monitor, not chasing a runaway quad across a field.

Simulate GPS loss and denial for real

Fade the constellation, degrade the geometry, or cut it entirely, and confirm the drone transitions cleanly into its GPS-denied modes and holds predictable behaviour. It’s the controlled way to induce the denied condition your VIO and dead-reckoning stacks are built for.

Tune GPS Rescue on the bench: Betaflight and FPV

It isn’t only PX4 and ArduPilot. Betaflight’s GPS Rescue and FPV return-to-home need the same proof before you trust them over a treeline: feed the flight controller a real fix, script the failsafe trigger, and watch the craft decide to come home, on the bench, at zero risk. SITL fault injection only alters the GPS message; only real RF makes the actual receiver believe it lost, then reacquired, the sky.

Bench-test jamming and spoofing resilience

Before you send an aircraft into a contested environment, prove it survives one. Add jamming or a spoofing capture to the scenario and measure how the flight controller responds, all conducted in a shielded setup, nothing on the open air.

Validate counter-UAS systems

Turned around, the same capability is a counter-UAS test bench: AnyLocate generates the controlled GNSS threat so a detect-and-defeat system can be built against a repeatable, measurable attack, safely, in the lab, instead of the range.

Frequently asked questions

How do I test GPS failsafe / return-to-home without flying?
Run the autopilot on the bench with AnyLocate feeding its receiver a real signal, then script a GPS loss or a position glitch. The flight controller reacts as it would in the air, so you watch the failsafe and RTH logic trigger without risking the aircraft.
PX4 failure gps off / ArduPilot SIM_GPS only fake the message. How do I test the real receiver?
Exactly the gap. Software fault injection stops the GPS messages inside the simulator; it never exercises the real receiver or RF front end. AnyLocate broadcasts the actual signal, so the genuine u-blox or Septentrio module is what's fooled, and the real hardware path is under test.
How do I test GPS-denied navigation?
Fade or cut the simulated constellation and confirm the drone hands over to its GPS-denied modes (optical flow, VIO, dead reckoning) and behaves predictably, all on the bench.
Can I validate a counter-UAS system with this?
Yes. AnyLocate is the controlled GNSS threat generator: produce the spoofing or jamming signal in a shielded setup so a counter-UAS system can be developed and its detect-and-defeat performance measured, repeatably and legally.

Related use cases

GNSS spoofing & jamming resilience test with conducted RF
GNSS receiver testing: TTFF, sensitivity, production test
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