Detection and parameter retrieval of aircraft wake vortices have attracted much attention in air traffic management and related fields. In foggy weather conditions, the scattering of a wake vortex is mainly determined by the fog drops carried by the velocity field of the wake. By taking the fog drops' property of weak inertia into account, a new theoretical method to retrieve the circulation of a wake vortex generated in fog is proposed in this paper. In the method, an upward-looking monostatic radar is employed to obtain the Doppler velocities of radar cells along the symmetric line of the wake vortex, and then the circulation can be obtained through a very simple expression with respect to the Doppler velocities and the length of the radar cells. Numerical simulation results verify the good performance of the method.
Circulation retrieval of wake vortex in fog with an upward-looking monostatic radar
IEEE Transactions on Aerospace and Electronic Systems ; 52 , 1 ; 169-180
2016-02-01
1709451 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch