The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The ACAS Xu program has developed both a horizontal and vertical collision avoidance logic to enable unmanned aircraft to avoid manned aircraft. Each logic supports a variety of surveillance sources and is individually capable of providing a significant safety benefit. This paper proposes a logic selection function that can effectively arbitrate between the horizontal and vertical logics to achieve...
One approach to designing the decision making logic for an aircraft collision avoidance system is to frame the problem as Markov decision process and optimize the system using dynamic programming. The resulting strategy can be represented as a numeric table. This methodology has been used in the development of the ACAS X family of collision avoidance systems for manned and unmanned aircraft. However,...
The safe integration of unmanned aircraft into the airspace requires reliable systems to keep aircraft separated. Unmanned aircraft will likely have to use horizontal maneuvers, in contrast with manned aircraft collision avoidance systems, which use only vertical maneuvers. Coordination of horizontal maneuvers is much less straightforward than vertical maneuvers because in some situations it is better...
Unmanned aircraft systems (UAS) have proven to have distinct advantages compared to manned aircraft for a variety of tasks. Current airspace regulations require a capability to sense and avoid other aircraft to replace the ability of a pilot to see and avoid other traffic. A prototype phased-array radar was developed and tested to demonstrate a capability to support the sense and avoid (SAA) requirement...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.