US Government As Represented by the Secretary of the Army

James H Mullins

William C Pittman

Ralph H Halladay

Michael R Christian

John B Meadows

The dual band millimeter-infrared fiber optics guidance data link presents nhanced seekers with the capability to see through cloud cover while exhibiting resolution that is adequate to strike high value targets. Such a seeker may use a bi-directional dual band data link in the form of a secure, high bandwidth optical fiber between the missile in flight and the ground station, offering the capability to transmit millimeter-infrared sensor data from the missile to the ground station and transmit missile guidance signals from the ground station to the missile over the same high bandwidth optical fiber. Both infrared and millimeter target signature data is made available in the ground station by the use of applicants' invention. Such availability not only provides the gunner with an additional capability to identify the target and thus avoid fratricide, but fusion of the infrared and millimeter data in the automatic target recognizer in the ground station provides an additional capability to classify and identify targets while preserving high-value components of the data link by their removal from the missile to the ground station.

Dual band millimeter-infrared fiber optics guidance data link

In a phased array radar, simultaneous beam steering and single-sideband mlation is accomplished in the phase shifters in response to phase control signals produced by the beam steering controller and input to the phase shifters. The beam steering controller produces the phase control signals from a pre-selected beam steering angle, a pre-selected radar intermediate frequency and a voltage representing the frequency error from incomplete compensation of the target motion (doppler) of the previous cycle of the radar. Using the phase shifters thusly eliminates the need for an expensive separate component, the single sideband modulator.

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Huntsville, AL, United States of America

James H Mullins