GPS Scintillation Modeling and Receiver Design Strategies for Low-latitude Regions

F. Ghafoori and S. Skone

Abstract:	Raw scintillation data sets would ideally consist of high-rate IF samples collected directly from a hardware front end. These digital samples can be processed in post-mission using a GNSS receiver, allowing evaluation of different signal acquisition and tracking strategies. In practice, however, the data storage and management associated with such large IF data sets are prohibitive and more typically, only post-correlator in-phase (I) and quadraphase (Q) samples at a lower data rate are provided by commercial units in the field. To exploit these low frequency data sets from commercial receivers for post-processing in a software receiver, some manipulation of the observations is required. In this study, we have introduced a method to exploit raw data from scintillation monitors for studies of GNSS receiver design and, using the subsequent simulated IF samples, we have conducted initial studies to determine optimum settings and strategies to mitigate scintillation impact on multi-frequency receiver performance.
Published in:	Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014) September 8 - 12, 2014 Tampa Convention Center Tampa, Florida
Pages:	2394 - 2409
Cite this article:	Ghafoori, F., Skone, S., "GPS Scintillation Modeling and Receiver Design Strategies for Low-latitude Regions," Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, September 2014, pp. 2394-2409.
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