Calculation method in a radio system for calculating the geometrical time difference between transmitters
US6445928B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Dec 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a calculating method and a radio system comprising a set of emitters and a set of receivers and a measuring means, which measure the time difference between the reception moments of signals transmitted by the transmitted while the receiver is receiving signals, and which calculate the geometrical time difference of he signals transmitted by the transmitters. The radio system comprises a calculating means, which form the real time difference between the transmission moments of the signals transmitted by the transmitters as a function of time by means of measuring the time difference of the signals received by the receiver and by means of the geometrical time difference, in such a way that the calculating means and the geometrical time difference to the time difference based on the reception moments. Moreover, the calculating means sum up directly measured real time differences and thereby calculate the real time differences between the other transmitters in the coverage area of the receiver. Further, the calculating means calculate the real time differences between the transmitters in the coverage areas of different receivers by using the already calculated …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.