The term ionosphere and hence, the etymology of its derivatives, was proposed by Robert Watson-Watt.
The Radio Research Station 1924 - August 31, 1979 at Ditton Park, Buckinghamshire, England was the UK government research laboratory which pioneered the regular observation of the ionosphere by ionosondes in continuous operation since September 20, 1932, and applied the ionosonde technology for the first developments which lead to British Chain Home radar system which was operational at the start of World War II.