Apparatus for generating a nutating electromagnetic field

Details Apparatus for generating a nutating electromagnetic field Apparatus for generating a nutating electromagnetic field

1975-02-24

1977-04-12

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

318653, 324 34PS, 324 41, 340258C, G01R 3302, G01S 102

Patent

active

040178587

ABSTRACT:
A field (e.g., a magnetic field) which nutates about a pointing vector is used to both track or locate an object in addition to determining the relative orientation of this object. Apparatus for generating such a field includes mutually orthogonal coils and circuitry for supplying an unmodulated carrier, hereafter called DC signal, to one coil and an AC modulated carrier signal, hereafter called AC signal, to at least one (usually two) other coil, such that the maximum intensity vector of a magnetic field produced by the currents in the coils nutates about a mean axis called the pointing vector direction of the field.

REFERENCES:
patent: 3121228 (1964-02-01), Kalmus
patent: 3838409 (1974-09-01), Minasy et al.

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