Method of determining the position of a target using transmitters of opportunity
US7155240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jun 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/878
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining the position of a target comprising the steps of: providing a transmitter or a plurality of transmitters to transmit a signal to the target, providing a receiver or a plurality of receivers to receive signals reflected from said target. Determining the time of arrival information of said reflected signal at the or each receiver; using information pertaining to the position of the or each receiver and/or the or each transmitter and with the information obtained determining the target position. Preferably the signal includes a modulated or coded portion unique to the transmitter; and said signal portion is associated with the or each particular transmitter by virtue of said signal portion. The signal maybe a mobile phone transmission, DAB, digital TV, digital Radio or digital satellite transmissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.