DocumentCode :
2313071
Title :
Optimal path-control for dual-frequency overlay GNSS receivers
Author :
Rügamer, Alexander ; Mongrédian, Cécile ; Urquijo, Santiago ; Rohmer, Günter
Author_Institution :
Fraunhofer IIS, Nuremberg, Germany
fYear :
2011
fDate :
29-30 June 2011
Firstpage :
158
Lastpage :
163
Abstract :
This paper presents a general overlay based front-end architecture that enables the joint reception of two signals broadcast in separate frequency bands, sharing just one common baseband stage. The consequences of this overlay in terms of signal quality are analyzed and it is shown that the noise floor superposition results in non-negligible signal degradations. However, it is also demonstrated that these degradations can be minimized by judiciously setting the relative gain between the two signal paths. As an illustration, the analytical optimal path-control expression to combine overlayed signals in an ionospheric-free pseudorange is derived for both Cramér-Rao Lower Bound and practical code tracking parameters.
Keywords :
optimal control; position control; radio receivers; satellite navigation; Cramer-Rao lower bound; dual-frequency overlay GNSS receivers; general overlay based front-end architecture; joint reception; optimal path-control; signal quality; Bandwidth; Baseband; Degradation; Frequency modulation; Noise; Receivers; Satellites; Cramer-Rao bounds; Global Positioning System; Multiple access interference; Satellite navigation systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Localization and GNSS (ICL-GNSS), 2011 International Conference on
Conference_Location :
Tampere
Print_ISBN :
978-1-4577-0186-3
Electronic_ISBN :
978-1-4577-0187-0
Type :
conf
DOI :
10.1109/ICL-GNSS.2011.5955255
Filename :
5955255
Link To Document :
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