Probabilistic Noncooperative Near Mid-Air Collision Avoidance
2011 (English)In: IEEE Transactions on Aerospace and Electronic Systems, ISSN 0018-9251, Vol. 47, no 2, 1265-1276 p.Article in journal (Refereed) Published
We propose a probabilistic method to compute the near mid-air collision risk as a function of predicted flight trajectory. The computations use state estimate and covariance from a target tracking filter based on angle-only sensors such as digital video cameras. The majority of existing work is focused on risk estimation at a certain time instant. Here we derive an expression for the integrated risk over the critical time horizon. This is possible using probability for level-crossing, and the expression applies to a three-dimensional piecewise straight flight trajectory. The Monte Carlo technique provides a method to compute the probability, but a huge number of simulations is needed to get sufficient reliability for the small risks that the applications require. Instead we propose a method which through sound geometric and numerical approximations yield a solution suitable for real-time implementations. The algorithm is applied to realistic angle-only tracking data, and shows promising results when compared to the Monte Carlo solution.
Place, publisher, year, edition, pages
2011. Vol. 47, no 2, 1265-1276 p.
Probability, Near mid-air collision, Avoidance
IdentifiersURN: urn:nbn:se:liu:diva-15831DOI: 10.1109/TAES.2011.5751257ISI: 000289844100034OAI: oai:DiVA.org:liu-15831DiVA: diva2:127533