The surveillance system provides a means to augment Automatic, Dependent Surveillance-Broadcast (ADS-B) with "look alike ADS-B" or "pseudo ADS-B" surveillance transmissions for aircraft which may not be ADS-B equipped. The system uses ground based surveillance to determine the position of aircraft not...http://www.google.fr/patents/US6633259?utm_source=gb-gplus-shareBrevet US6633259 - Method and apparatus for improving utility of automatic dependent surveillance
Method and apparatus for improving utility of automatic dependent surveillance
