초록 ▼

A passive radiation bearing (azimuth) sensor including a member having a plurality of radiation detectors mounted in spaced apart relationship therearound and additional structure limiting the receiving field of each detector to a generally conical volume having its apex at the detector. The sensor

A passive radiation bearing (azimuth) sensor including a member having a plurality of radiation detectors mounted in spaced apart relationship therearound and additional structure limiting the receiving field of each detector to a generally conical volume having its apex at the detector. The sensor further includes electronics for determining when the radiation being received has changed from a reference value and which detectors sensed the change, and for calculating from this information whether a transient object is in the field and, if so, its bearing.

대표청구항 ▼

A method of determining the bearing of a source of optical radiation comprising the steps of: providing an optical sensor including a base member having a plurality of optical detectors mounted thereon in spaced apart relationship with each detector having an optical radiation receiving field and pr

A method of determining the bearing of a source of optical radiation comprising the steps of: providing an optical sensor including a base member having a plurality of optical detectors mounted thereon in spaced apart relationship with each detector having an optical radiation receiving field and producing an output in response to the reception of optical radiation within the field, and further structure mounted on the base member to restrict the receiving field of each detector to a radially outwardly directed, generally conical volume having an apex at the detector; developing a reference function from the outputs of each of the detectors; periodically developing an instantaneous function from the outputs of each of the detectors; and comparing the instantaneous function to the reference function to determine when a change in optical radiation in the field of at least one detector occurs.