Wide Area Multilateration is a form of Cooperative Independent Surveillance, used in Air Traffic Control Systems, based on the principle of hyperbolic localization of targets that emit SSR Mode S signals that is received from a group of ground based stations. The accuracy of WAM systems is strongly dependent by the Time Stamp assigned by each receiving stations to the received signal. Hence a fundamental requirement is the complete and accurate synchronization of all the stations of the systems to a common reference clock time. In the paper a particular Satellite Common View technique (All Sat in View) is proposed and implemented for WAM synchronization also to overcome this limit; after an introduction of the WAM peculiarity to be taken into account for GNSS Common View and All in view techniques an analysis of a real case study is reported and some trials with real data are presented. Moreover, the implementation of a prediction and estimation Kalman filtering for the clock bias is discussed and analyzed with the use of real data.
Leonardi, M., Bellipanni, L., Galati, G. (2010). All satellites in view: GNSS-based synchronization for wide area multilateration. In Proceedings of The European Navigation Conference Global Navigation Satellite Systems ENC GNSS 2010. Deutsche Gesellschaft für Ortung und Navigation e.V. (DGON).
All satellites in view: GNSS-based synchronization for wide area multilateration
LEONARDI, MAURO;GALATI, GASPARE
2010-01-01
Abstract
Wide Area Multilateration is a form of Cooperative Independent Surveillance, used in Air Traffic Control Systems, based on the principle of hyperbolic localization of targets that emit SSR Mode S signals that is received from a group of ground based stations. The accuracy of WAM systems is strongly dependent by the Time Stamp assigned by each receiving stations to the received signal. Hence a fundamental requirement is the complete and accurate synchronization of all the stations of the systems to a common reference clock time. In the paper a particular Satellite Common View technique (All Sat in View) is proposed and implemented for WAM synchronization also to overcome this limit; after an introduction of the WAM peculiarity to be taken into account for GNSS Common View and All in view techniques an analysis of a real case study is reported and some trials with real data are presented. Moreover, the implementation of a prediction and estimation Kalman filtering for the clock bias is discussed and analyzed with the use of real data.Questo articolo è pubblicato sotto una Licenza Licenza Creative Commons
