초록 ▼

A low cost system using passive radiometry or active radar for the detection of a target and providing discrimination between desired targets and false targets. The device may be mounted on a drone aircraft or other vehicle and comprises a detecting sensor having a fixed antenna system whose functio

A low cost system using passive radiometry or active radar for the detection of a target and providing discrimination between desired targets and false targets. The device may be mounted on a drone aircraft or other vehicle and comprises a detecting sensor having a fixed antenna system whose function is to detect the presence and direction to a target in airframe coordinates. The sensor provides means for generating a broad fan beam containing a plurality of closely spaced interference lobes spaced so as to encompass a predetermined target size. The interference lobes are continuously swept across the line of travel and the receiving circuitry provides means for detecting a desired target within the interference lobes. The system also provides a pre-programmed means, initiated by the target sensor, designed to aim the aircraft at the target and a target tracker or homing means having a fixed antenna directed along the heading axis of the drone aircraft and used to “home”the aircraft into the target.

대표청구항 ▼

In a target sensing device a sensor means comprising: first and second interconnected slotted waveguide antenna means for generating a broad fan beam and a plurality of closEly spaced interference lobes contained within said broad fan beam said interference lobes spaced so as to encompass a predeter

In a target sensing device a sensor means comprising: first and second interconnected slotted waveguide antenna means for generating a broad fan beam and a plurality of closEly spaced interference lobes contained within said broad fan beam said interference lobes spaced so as to encompass a predetermined target size at a predetermined range, a phase shifter for continuously varying the positions of said interference lobes within said broad fan beam, means for detecting said predetermined size target within said interference lobes, and means combined with said means for detecting for filtering out undesired targets.