Doppler ambiguity resolution at high signal to noise ratio
US10539672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | May 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/93271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method of determining a relative velocity of an object at a radar system is disclosed. A transmitter transmits a source signal at the object and a receiver receives an echo signal that is a reflection of the source signal from the object. The echo signal is partitioned into a first portion and a second portion at a processor. A first Doppler frequency is estimated for the first portion and a second Doppler frequency is estimated for the portion. A difference is estimated between the first Doppler frequency and the second Doppler frequency. A presence of a Doppler ambiguity is determined from a comparison of the estimated difference to a selected Doppler frequency. A corrected Doppler frequency is obtained based on the Doppler ambiguity and the relative velocity of the object is determined from the corrected Doppler frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.