Method and device for co-operative radio direction-finding in transmission
US6693591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method of co-operative radio direction-finding in transmission in a system of radio direction-finding for a radiocommunications system comprising one or more transmission sources or transmitters, the transmitted signal comprises a reference sequence formed by a sequence of symbols {Sk}, the receiver comprising at least one array of several sensors coupled to a radio direction-finder. The method comprises the following steps:a) determining the reference signal or signals di(t) associated with a transmitter m from the reference symbols {Sk} and from the modulation defined by the format of the signals; b) defining the instant of arrival tk of one or more reference signals; c) from the signal x(t) received at the sensors, the instants of arrival tk and the reference signal or signals di(t) derived from the step a), determining the value or values of incidence of the signals for a given transmitter. The method can be applied to GSM or UMTS signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.