Aeronautics and astronautics – Missile stabilization or trajectory control – Remote control
Patent
1979-01-30
1981-11-10
Jordan, Charles T.
Aeronautics and astronautics
Missile stabilization or trajectory control
Remote control
F41G 726
Patent
active
042993601
ABSTRACT:
A beam of electromagnetic radiation is spatially encoded using a digital frequency diversity technique. The spatial encoding defines the beam cross-section into a series of resolution elements each identified by a different digital code. The codes defining resolution elements are detectable by an object, such as a missile, located in the radiation beam and can be used to locate the object in this beam. In the preferred embodiment, an encoding mask, moved through the beam, provides the digital frequency modulation. The mask is provided with a series of bit areas, each of which bears at least two sets of cyclically recurring bands effective to modulate a detectable parameter of the radiation, such as intensity. The spacing between adjacent bands of a set, termed a bit cycle, is proportional to a predetermined frequency of beam parameter modulation. The novel arrangement enables the object to identify its position within the beam under conditions of severe atmospheric turbulence and object induced perturbations.
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Chin Gay
Jordan Charles T.
Martin Marietta Corporation
Renfro Julian C.
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