An engineer proposes cryptographically signing every IMU reading and verifying each signature before the attitude controller consumes it. Verification adds roughly 40 ms of latency. The attitude control loop executes at 400 Hz. This proposal is …?
Read DetailsA cargo UAV’s state estimator combines inertial and satellite positioning inputs. In laboratory testing under realistic sensor noise it converges accurately. In the field, an adversary injects a small, slowly growing bias into both inputs at once. The estimator reports high confidence and raises no fault. Why?
Read DetailsA laser ranging system on a UAV is targeted by a modulated light source that injects fabricated returns, causing the vehicle to perceive an obstacle where none exists. An engineer proposes rejecting any detected object that fails to persist across consecutive scans and to appear at a physically plausible position given the vehicle’s own motion. Evaluate the proposal.
Read DetailsTwo prediction approaches are compared for a UAV’s altitude channel. Model 1 predicts the next altitude reading as a weighted combination of recent altitude readings. Model 2 predicts it from the vehicle’s state and the thrust commands the controller issued. An adversary begins slowly biasing the barometer while the controller commands a hold. Which model is better positioned to detect this, and why?
Read Details