Methods and apparatus to position a mobile receiver using downlink signals part IV
US6266014A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1998 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Oct 9, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention consists of methods and apparatus to estimate the position and velocity of a Mobile Receiver (MR) using either the Time Of Arrival (TOA) of signals received by the MR, their Phase Of Arrival (POA), their Strength Of Arrival (SOA), their Frequency Of Arrival (FOA), or a combination thereof, with respect to a reference produced by a Reference Receiver (RR) of known location. In order to solve for the coordinates of the MR, the invention uses either hyperbolic multilateration based on Time Difference Of Arrival (TDOA), or linear multiangulation based on Phase Difference Of Arrival (PDOA), or both. In order to solve for the velocity of the MR, the patent uses FOA based on Frequency Difference Of Arrival (FDOA).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.