System and method for geolocation of multiple unknown radio frequency signal sources
US8878725B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2011 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Jun 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/03
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to an embodiment of the present invention, geolocations of multiple unknown radio frequency (RF) signal sources are determined using three-dimensional (3-D) geolocation techniques. The three-dimensional (3-D) geolocation techniques obtain reliable geolocation estimates of radio frequency (RF) emitters based on energy or received signal strength (RSS) of emitter transmitted signals and based on their time differences of arrival (TDOAs) at various sensor locations. The energy based geolocations and the time difference of arrival (TDOA) geolocations are combined to determine an overall set of geolocations for multiple unknown radio frequency (RF) signal sources. The geolocation information is used to track and monitor the locations of the multiple emitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.