Pseudolite Signal Creeping On Conducting Surfaces

Robert J. Biberger, Guenter W. Hein, Bernd Eissfeller, Veit Oehler and Torben Schueler

Abstract:	The “GNSS Based Precision Approach Local Area Augmentation System” (LAAS) involves a number of novel architectural elements. Airport Pseudolites (APLs) have been introduced to accomplish the stringent performance requirements imposed on the system. Analysis of Pseudolites have been performed by the Institute of Geodesy and Navigation using an experimental APL. Although the ideal view of an APL is a “satellite-on-theground“, there are many effects which have to be considered and modeled in a different way than for real satellite signals. Among those are signal creeping, signal interference and multipath on conducting surfaces. This paper presents the creeping effect of Pseudolite signals when incident upon conducting surfaces. A twodimensional model based on Maxwell’s equations is developed and verified by experimental tests. Interference and special multipath problems will be discussed. By using this theoretical model a reduction of the pseudorange and/or carrier phase measurement errors can be achieved.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	1238 - 1244
Cite this article:	Biberger, Robert J., Hein, Guenter W., Eissfeller, Bernd, Oehler, Veit, Schueler, Torben, "Pseudolite Signal Creeping On Conducting Surfaces," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 1238-1244.
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