Decoding position information in space-based systems
US10650687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2018 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Nov 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0027
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In one implementation, a pair of messages are received from one or more space-based receivers that each received the pair of messages. The pair of messages comprise encoded position information of a transmitter, and a plurality of candidate locations for the transmitter is determined therefrom. A location of the transmitter is determined by eliminating candidate locations until only one remains. In particular, each candidate location that is not within a coverage area of each of the space-based receivers is eliminated, and each candidate location that is not within a predetermined distance of at least one previous candidate location is eliminated. In addition, it is determined that the remaining candidate location is within the coverage area of each of the space-based receivers as well as within the predetermined distance of at least one previous candidate location. Upon determining the location of the transmitter, it is transmitted to a subscriber system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.