Indoor localization with LTE carrier phase measurements and synthetic aperture antenna array
US11454726B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 16, 2020 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Jan 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/33
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spatial approach is provided to mitigate multipath error for an indoor pedestrian localization system using broadband communication signals, such as cellular long-term evolution (LTE) carrier phase measurements. Motion of a receiver may be used to synthesize an antenna array from time-separated elements. Received data may then be combined for synthetic aperture navigation that allows for suppressing multipath error based on determination of direction-of-arrival (DOA) of the incoming communication (e.g., LTE) signals. In one embodiment, navigation observables may be determined based on determined direction of arrival.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.