G - Physics – 01 – B
Patent
G - Physics
01
B
354/2, 343/38, 3
G01B 11/26 (2006.01) F41G 3/26 (2006.01) G01S 5/16 (2006.01) G01S 17/87 (2006.01)
Patent
CA 1116278
Abstract of the Disclosure Fan-shaped beams, sweeping angularly, substantially flatwise, across a solid angle space having the beam emitter at its apex, are modulated for transmission of special information to a selected one of a plurality of identically equipped bodies in that space. Whenever beam radiation reflected from a body is detected at the emitter, distance to the reflecting body is measured on the basis of radiation out-and-back time. If the body is at a distance for which special information is valid, the beam is modulated with such information for as long as its reflection from that body is received. A complete beam sweep cycle has a pre- determined duration. As a basic condition for acceptance of special information, a body must receive such information on all beams during a predetermined time interval of at least that duration. As a further condition, a beam may be modulated with a characterizing sign whenever it intersects two bodies substantially simultaneously, and special information will be accepted at the body only if at least one beam lacks the characterizing sign.
322594
Marks & Clerk
Saab-Scania Aktiebolag
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