Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2007-09-26
2009-08-04
Issing, Gregory C (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
Reexamination Certificate
active
07570203
ABSTRACT:
In a method for adjusting the integrity alert threshold in a satellite navigation system, an alert message for a satellite is sent when an estimated signal error of the satellite signal emitted by the satellite is greater than a defined integrity alert threshold. According to the invention one or more parameters in a data stream emitted by the satellite are varied, and the integrity alert threshold is adjusted based on the changed parameters.
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patent: 7019687 (2006-03-01), Schempp et al.
patent: 7095369 (2006-08-01), Clark
patent: 7400292 (2008-07-01), DiLellio
patent: 1637899 (2006-03-01), None
Oehler et al, “The Galileo Integrty Concept and Performance,” Proceedings of he GNSS-2005, The European Navigation Conference, Jul. 19-22, 2005, pp. 1-11.
Hollreiser et al, “Galileo User Segment Overview,” ION GPS/GNSS 2003, Sep. 9-12, 2003, pp. 1941-1928.
Medal et al, “SISA Computation Algorithms and their applicability for Galileo Integrity,” ION-GPS 2002, Sep. 24-27, 2002, pp. 2173-2184.
Astrium GmbH
Crowell & Moring LLP
Issing Gregory C
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