Apparatus and method for determining the range and bearing in a plane of an object characterized by an electric or magnetic dipole
US4600883A · kind A · utility
15Cited by
11References
8Claims
0Family size
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Key dates
| Filing date | Sep 21, 1983 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Sep 21, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Orthogonal components of electromagnetic field perturbations due to objects characterized by electric or magnetic dipoles are measured along orthogonal axes in a plane. The components are proportional with (3 cos.sup.2 .theta.-1) and (3 cos .theta. sin .theta.), where .theta. is the bearing of the dipole center relative to the device for measuring the field components. .theta. is readily determined from these equations and the range of the object can also be determined from knowledge of the dipole moment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.