An Accuracy and Availability Estimation of Aircraft Positioning by Navigational Aids

The paper considers the task of accuracy estimation of aircraft coordinates detection using navigational aids data. Typical positioning methods and models of accuracy analysis by pair of Distance Measuring Equipment, Very high frequency Omnidirectional Range and their fusion were studied and compared with positioning by multiple navigational aids, available at the point of aircraft location. Based on positioning accuracy estimation, availability variations were investigated in the form of percentage of time to guarantee a certain accuracy level. Results of accuracy and availability estimation by different methods of positioning for a certain aircraft flight trajectory are represented.