Semi-active guidance system

Details Semi-active guidance system Semi-active guidance system

1980-07-23

1982-07-06

Buczinski, S. C.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5R, 343 5SW, 343 75, 343 14, 343100LE, 343100ME, G01S 1308

Patent

active

043386024

ABSTRACT:
An air-to-ground tracking guidance system wherein a tracker/illuminator and a terminally guided seeker are utilized. Target track is initially established by the tracker/illuminator which also provides a target illuminating signal. Semi-active tracking utilizing the reflected target illuminating signal is employed by the seeker after launch. During this period of operation, the seeker is prevented from tracking the tracker/illuminator by means of a unique guard radiation system. The semi-active mode is supplemented by an active mode in which the seeker tracks reflections of a target illumination signal emitted therefrom and a passive mode during which the seeker tracks the radiometric thermal emission from the target. While in the semi-active mode, the seeker establishes a range track that is independent of the semi-active mode of operation. This permits the seeker to automatically convert the mode of operation to active and passive at the desired positions along the seeker's track.

REFERENCES:
patent: 3094695 (1963-06-01), Jahn
patent: 3643256 (1972-02-01), Owen
patent: 3875569 (1975-04-01), Hill et al.
patent: 3921169 (1975-11-01), Lazarchik et al.
patent: 4156874 (1979-05-01), Kopis

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