Radiant energy – Invisible radiant energy responsive electric signalling – Plural signalling means
Patent
1992-04-14
1993-12-28
Dzierzynski, Paul M.
Radiant energy
Invisible radiant energy responsive electric signalling
Plural signalling means
2505151, G01T 116
Patent
active
052742385
ABSTRACT:
A method for detecting the angle of arrival at a receiver of ionizing radiation from a source of unknown specific activity at an unknown distance by using an active filter between the detector and source that varies the intensity of the radiation by a predetermine factor according to position and then comparing that value to an unshielded detector's value forming a geometric ratio to determine the angle of arrival of the radiation at the receiver in relation to a predetermined reference plane or line.
REFERENCES:
patent: 3436539 (1969-04-01), Wilcox
patent: 3539806 (1970-11-01), Humphrey
patent: 3581090 (1971-05-01), Brown
Ade Stanley G.
Battison Adrian D.
Dzierzynski Paul M.
Hanig Richard
Thrift Murray E.
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