Dual frequency distance measuring system
LC Spence, S Martin - US Patent 4,283,726, 1981 - Google Patents
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates
generally to radio fre quency distance measuring systems and methods, and more …
generally to radio fre quency distance measuring systems and methods, and more …
Dual frequency distance measuring system
LC Spence, S Martin - US Patent 4,283,726, 1981 - freepatentsonline.com
A radio frequency distance measuring system and method where two continuous wave
carrier signals, derived from a stable frequency source, are radiated from a known reference …
carrier signals, derived from a stable frequency source, are radiated from a known reference …