By the summer of 1941, metric radars, operating at wavelengths of about 1.5 m, had been developed for air interception, gun laying, searchlight control, coastal defence, ground-controlled interception and early warning of low-flying aircraft. The radiating structures of some of these radars produced broad antenna beams which were not wholly suitable for the applications for which the radars were designed.

Inspec keywords: military radar; history; defence industry

Other keywords: ground controlled interception; gun laying; antenna beams; A.D. Blumlein; wartime activities; air interception; early warning; searchlight control; coastal defence; metric radars; low flying aircraft

Subjects: Military detection and tracking systems