国际民航组织期刊

No. 4

A family of phased-array three-dimensional wind profilers has been developed by REMTECH (U.S.A.). These are electronically steered beam, phased-array antenna sodars which provide a significant increase in range — to 20 kilometres. The PA4 antenna shown, with an average range of 3 kin, was first demonstrated in late 1988 at the Boulder Atmospheric Observatory in Colorado, a U.S. National Oceanic and Atmospheric Administration facility.