Abstract: A receiving antenna connected to a surveillance sensor feeding a target detector. The target detector provides multiple inputs of target reports, azimuth, range and scan count data into a clutter mapper circuit which in turn feeds a track-while-scan circuit feeding a CRT display. The clutter mapper circuit provides improved clutter detection in the presence of scintillating clutter conditions.

Abstract: A reactionless drive system is disclosed comprising in combination a base, a torquer mechanism, the stator portion of which is affixed to the counter-rotational inertia member and accepting control signals from sources external to the system. A rotatable member, coupled to the torquer, is driven in a first direction. A torque compensator consisting of stator and rotor members is coupled between the base and the first mentioned rotatable member in one instance, and to an oppositely rotating member in another instance. All the foregoing components act together to maintain angular momentum of the system during its operative mode to a value of substantially zero. An electronic subsystem is provided which senses the angular velocities of the rotating members and provides a feedback signal to the torque compensator.

Abstract: An adaptive energy telescope having a linear sensor for detecting a received optical image. A movable mirror phase shifter is positioned near the telescope aperture and is responsive to the received optical image. A linear image quality sensor is optically coupled to the phase shifter. The phase shifter may have a plurality of mirrors each attached to a piezoelectric crystal so that the mirrors are displaced in accordance with the voltages impressed across the piezoelectric crystals. This phase shifter may also be provided with a single planar reflective sheet instead of a plurality of mirrors. The sensor may consist of a plate with a pinhole for admitting a portion of the optical image and a transducer at one side of the plate for converting the portion to an electrical signal. The sensor may also consist of a transform of the Fourier or Hadamard types and a low and high frequency detector optically coupled to the transform mechanism which in turn is electrically connected to an electronic divider.

Abstract: An optical target imaging system having a laser transmitter that provides a dual pulse sequence target illuminating field. One pulse of the dual pulse field is predominantly polarized in one direction and the other pulse is predominantly orthogonally polarized. At least two receivers for receiving the energy reflected from target in a predetermined polarization state processes the target information. Ultimately, the receiver outputs providing sample signals in Fourier or like transform format are fed to a digital computer that inverse transforms such signals to generate an image. A visual display of the target or data comprising display information is made possible by feeding the computer output into a CRT system or a data recording terminal.