1958 Suppl. 1018/1 Ground-based..radio duct.
1960 23 Feb. 5/3 In the semi~active homing system a ground-based radar illuminates the target.
1965 H. Kahn ix. 171 Ground-based missiles.
1965 7 Apr. 506/2 A report just published by the National Academy of Sciences (counterpart of the Royal Society) surveys the requirements of ‘ground-based’ astronomy over the next ten years.