Phase center measurement of electronic warfare antennas using GPS signals
US6967615B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Apr 21, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic warfare apparatus for determining the location of for example a ground based source of electromagnetic radiation from a platform such as an aircraft. Location is determined using angle of arrival based vector determinations provided by signal differences detected in the ground based signals arriving at platform antennas. Elimination of angle of arrival errors arising from imprecise knowledge of platform electronic warfare antenna characteristics is a focal point of the invention and is accomplished through precision use of global position system information received via the same electronic warfare antennas. Accurate determination of electronic warfare antenna characteristics prior to consideration of the large distance multiplication factors imposed by aircraft to distant signal source geometry enables accurate distant signal source location using the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.