Velocity determination apparatus
US9506944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2011 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Nov 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a velocity determination apparatus (1) for determining a velocity of an object (2). A Doppler frequency measuring unit is adapted to measure Doppler frequencies in at least three different frequency directions, wherein a Doppler frequency calculation unit is adapted to calculate a Doppler frequency for a calculation frequency direction being similar to one of the at least three different frequency directions depending on the Doppler frequencies measured for at least two further frequency directions of the at least three different frequency directions. The velocity can then be determined depending on the calculated Doppler frequency and the measured Doppler frequencies. Since in the calculation frequency direction the measured Doppler frequency is not needed for determining the velocity, a reliable velocity can be determined also in the calculation frequency direction, even if the measurement of the Doppler frequency in this calculation frequency direction is disturbed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.