This paper proposes a Gabor feature based ionospheric clutter region extraction method in RD map for its good performance of picking up the orientation information from such clutter in a Range-Doppler ...

The saguaro cactus is the iconic plant of the Arizona borderlands, and in June and early July, its fruit ripens.

TUCSON, Ariz. — Cousins Tanisha Tucker Lohse and Maria Francisco set off from their desert camp around dawn on most early ...