Loading...

Real-time Conflict Detection in Medium-term Flight Horizon using Probabilistic Approach and Dynamic Grouping Strategy

Seyedipour, Hamed | 2023

153 Viewed
  1. Type of Document: Ph.D. Dissertation
  2. Language: Farsi
  3. Document No: 56019 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Nobahari, Hadi
  7. Abstract:
  8. In this thesis, the problem of conflict detection was investigated with a probabilistic approach. The focus of the new solutions presented in this treatise is the accurate conflict estimation with low computational cost. For this purpose, several algorithms were developed. In the first step, a method for grouping aircraft to find aircraft pairs that are in conflict was presented. This work ends to reduction in the workload of conflict checking systems. Because there is no need to check all aircraft pairs in the scene. In the next step, an algorithm was presented for the analytical calculation of the relative position error of the aircraft by considering the wind correlation effect. Using this algorithm, we can calculate the covariance matrix of the relative distance accurately and with a much lower computational cost than the existing numerical methods. The results of the estimation methods presented in this thesis indicate that by covering the inner and outer covers of the conflict zone, the key variable "estimation error" can be achieved, which is one of the innovations presented in this thesis compared to previous works. Another innovation presented in this treatise is the possibility of calculating the conflict probability for a collision zone with an arbitrary shape, which can be used in scenarios of aircraft conflict with a weather cell or terrain, etc. Examining the computational cost of the methods developed in this thesis shows that, except for the relative position covariance matrix calculation algorithm, other algorithms developed in this thesis are also within the acceptable range of the computation time for decentralized implementation
  9. Keywords:
  10. Conflict Detection ; Conflict Probability ; Analytical Computation Relative Position Covariance Matrix ; Aircraft-Aircraft Conflict Scenario ; Aircraft-Cell Conflict Scenario

 Digital Object List

 Bookmark

...see more