Geo-locating of wireless devices using squared residuals from round trip time and angle of arrival vectors
US12253593B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2024 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Nov 18, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a geo-location of a target station includes transmitting a plurality of ranging packets to a target station and receiving a plurality of response packets transmitted by the target station. A plurality of round-trip times (RTTs) are determined based on the ranging packets and the response packets. A plurality of angles of arrival (AOAs) are determined based on the response packets. First location vectors are determined based on the pluralities of RTTs and AOAs. Second location vectors are determined based on location parameters of the measuring station and the target station. Squared residual vectors are generated based on the first and second pluralities. A minimum of a sum of the squared residual vectors is calculated to identify best-fit location parameters for the target station. A circular error probability (CEP) ellipse is generated using the best-fit location parameters and a geo-location of the target station is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.