when was the instrument landing system invented
The Instrument Landing System had been invented in the 1930s by Ernst Kramar IEEE Pioneer 1964 at Standard Electric Lorenz an ITT subsidiary.Andrew Alford IEEE Pioneer 1965, under a CAA contract, developed and tested a full system embodying a Localizer and a constant intensity Glide Path.n December 12, 1942, the Office of the Chief Signal officer informed ITT that its 330 megacycle glide path had been selected as part of the Army Instrument Landing System SCS-51. Andrew Alfred left ITT to form his own Consulting organization and was replaced by Paul Adams. Chester Watts left to join the Signal Corps.