Doppler frequency angle measurement technique
US5315307A · kind A · utility
14Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1993 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Jun 18, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The technique allows precise angle-of-arrival (AOA) and radio frequency measurements on non-cooperative radar signals, by exploiting precise phase measurement capabilities of frequency measurement receivers. It is assumed that the intercept receivers with this capability are on board an aircraft and there are at least two antennas available. By utilizing the phase measurements, the incident frequency and incident phase angle are calculated using formulae derived under the disclosed technique. By taking multiple samples and averaging, angle measurement errors can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.