Telecommunications Sensors

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By Louis Brown

Technical and armed forces Imperatives: A Radar heritage of global battle II is a coherent account of the background of radar within the moment international warfare. even supposing many books were written at the early days of radar and its position within the conflict, this ebook is via a ways the main entire, protecting floor, air, and sea operations in all theatres of global struggle II. the writer manages to synthesize an enormous volume of fabric in a hugely readable, informative, and relaxing manner. Of distinctive curiosity is vast new fabric concerning the improvement and use of radar by way of Germany, Japan, Russia, and nice British. the tale is informed with out undue technical complexity, in order that the e-book is offered to experts and nonspecialists alike.

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Additional resources for A radar history of World War II : technical and military imperatives

Sample text

Experience with Curtiss JN­2s in the expedition to Mexico in 1916 'indicated that airplanes had a sufficient tendency to fall unaided out of the sky' so that an air defense arm hardly seemed to be urgent, but the nature of the war in Europe quickly dispelled such ideas [8 ].  Eight machine­gun batteries were credited with having downed 41 [11].  The Coast Artillery pressed for modern equipment and secured from the Ordnance Department in 1925 a satisfactory plan, which came to nought because of the budget restrictions of the 1930s.

The electronic time base or sweep circuit lay in the future.  Its success resulted from something called gas focusing, which also set its limits.  Johnson produced a bright spot by having a copious electron beam taken from a thermal filament impinge on a phosphorescent coating.  Focusing the beam of a high­vacuum tube required a new branch of engineering called 'electron optics'.  By 1930 the crucial element for radar and television was at hand and by 1935 was incorporated into handy laboratory oscillographs with frequency responses limited only by the amplifiers driving the cathode ray tubes.

The Coast Artillery pressed for modern equipment and secured from the Ordnance Department in 1925 a satisfactory plan, which came to nought because of the budget restrictions of the 1930s. The Coast Artillery School at Fort Monroe emphasized technical quality.  As part of a general strengthening of the arm a 37 mm automatic gun, which had been under development for more than a decade, was to replace machine guns [12]. 50 inch machine guns for close defense was rejected for the 40 mm Bofors and the 20 mm Oerlikon [13].

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