New Interference Rejection Technology from Leica

J.E. Maenpa, M. Balodis, G. Walter, J. Sandholzer

Abstract:	Radio frequency signal interference (RFI) can adversely affect the ability of a GPS receiver to provide users with suitable measurements, when operation within a high RFI environment is required. The paper describes new interference rejection technology for dual frequency GPS receivers, developed by Leica GPS, which significantly improves the tracking performance of a receiver at both the L1 and L2 frequencies under high RFI conditions. The paper includes a description of test results in a laboratory environment which compares the tracking performance of receivers employing the new technology against a prior receiver design, in controlled tests utilizing injected and re-radiated interference sources . Also included in the paper is a description of field test results which compares the performance of the new technique against other techniques, for receivers operated near known sources of GPS RFI.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	1457 - 1466
Cite this article:	Maenpa, J.E., Balodis, M., Walter, G., Sandholzer, J., "New Interference Rejection Technology from Leica," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 1457-1466.
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