Sector scan indicator
作者： Harold L Saxton
DOI:
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摘要:
lens.org 参考文章(4)
Wendell L Carlson, Superheterodyne radio altimeter or locator ,(1943)
Wolff Irving, Frequency-modulated pulse radio locating system ,(1943)
Blumlein Alan Dower, Radio reflection direction and distance determining system ,(1942)
De Witt R Goddard, Direction finding system ,(1945)