Performance of adaptive ray zooming approach during aircraft flyover. (a) Eigenray results while aircraft is grounded. (b) Eigenray results during take-off phase. (c) Eigenray results while aircraft is above receiver. (d) Eigenray results while aircraft resides beyond receiver. (e) Distance between eigenrays and receiver using basic and advanced ray zooming method, and (f) C++ run-times of adaptive ray zooming method using the basic and the advanced approach.