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We posit that commercial Wi-Fi-based unmanned aerial vehicles (UAV) are vulnerable to common and basic security attacks, capable by beginner to intermediate hackers. We do this by demonstrating that the standard ARDiscovery Connection process and the Wi-Fi access point used in the Parrot Bebop UAV are exploitable such that the UAV's ability to fly can be disrupted mid-flight by a remote attacker....
Robust output-feedback controller against various perturbations is proposed for satellite formation keeping. The mixed H2/Hinfin controller with regional pole placement constraints is designed based on linear Hill's equations. The mixed H2/Hinfin controller takes into account both the disturbance rejection aspects and the LQG aspects. In addition, the closed-loop poles can be forced into some sector...
Relative navigation is one of the key technologies involved in many spatial missions, including spacecraft formation flight as well as rendezvous and docking. This paper develops an efficient approach of relative orbit determination, especially, the case in which spacecrafts perform unknown maneuvers to change the relative configuration is considered. On the assumption that the inter-spacecraft distance...
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