Determination of state vector, timing, and navigation quality metrics from reception of ADS-B transmissions
US9255804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2014 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Jun 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H40/27
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A technique for determining the position of a mobile device includes receiving messages from respective mobile reference devices. Each of the messages is broadcast beginning at one of several predetermined message start opportunity (MSO) times that have known timings relative to a reference time. Each of the messages contains a MSO value identifying the MSO time at which transmission of the message started. The MSO value is used to determine the time of transmission of each of the messages received at the mobile device, and the position of the mobile device is determined via multi-lateration. According to another approach, the mobile device receives a set of ADS-B messages from a respective set of mobile reference devices. The time of transmission of each of the ADS-B messages is supplied in the ADS-B message itself or in a subsequent message and used to determine the position of the mobile device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.