Amirali Nikkhah - Department of Aerospace engineering KNTU.ac.ir
Hoseyn Mojarrab - Department of Aerospace Engineering. KNTU.ac.ir
Fatemeh Mojarrab - Electrical Engineering Department &#۰۳۹; Qazvin Islamic Azad University
Reza Zardashti - Aerospace Department Malek-Ashtar university of Technology

The design of a ground collision avoidance system for an airplane based on optimal control theory is presented in this paper. A control system is designed by linear quadratic tracker to track desired Euler angles of airplane. The system independent of ۳ dimensional maps, works by using a forward looking camera. In addition, the obstacle is analyzed by digital image processing techniques. An optimal flight control system based on discrete-time linear quadratic tracker is designed, to fly over or pass obstacles like mountains automatically.

Automatic Flight Control System, Ground Collision Avoidance System, Linear quadratic tracker, Digital Image Processing, optimal control system