Patent ID: 7521664
Filing Date: 2009-04-21
Classification: G01S

Abstract:
1. Apparatus for determining a direction of low power radiation, said low power radiation originating from at least one source, said radiation arriving essentially collimated, the apparatus comprising: an opening, for receiving incoming radiation; at least two radiation sensors, located at different spatial locations behind said opening, each said radiation sensor detecting at least a respective portion of said incoming radiation, received from said opening and converting said respective portion of said incoming radiation into a respective electric signal; for each said radiation sensor, at least one respective integrator, coupled with said respective radiation sensor, for integrating said respective electric signal; an integration enabler, coupled with each of said at least two respective integrators, a threat detector, coupled with said integration enabler, for detecting threats and producing a threat indication for each said detected threat; and a processor, coupled with said integrators and said threat detector, for determining said direction according to the amounts of said electrical signals integrated by said integrators.