Method for positioning target in building based on assistance of two aircraft
US11537147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Dec 31, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/03
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for positioning a target in a building based on the assistance of two aircraft includes the following steps: allowing two aircraft with respective direction-finding devices to fly around a building, and sending a signal by a positioning tag carried by an indoor target; measuring projections of directions of the signal source on a horizontal plane respectively by the two aircraft, and indicating a position of the indoor target on the horizontal plane by an intersection of the two projections; and according to a difference between barometric pressures of the indoor target and the aircraft, obtaining an altitude of the target to further obtain position coordinates of the target. The method avoids deploying an indoor positioning base station, and improves the positioning accuracy, stability and anti-interference performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.