Multi-Constellation Interoperability Interference Assessment in the Framework of GNSS Modernization: An Evaluation of the Impact on the Receiver Performance

M. Paonni, D. Fontanella, B. Eissfeller, A.R. Pratt

Abstract:	In order to evaluate the impact on the user receiver of a multi-constellation interoperable interference very extensive simulations have been run evaluating several figures of merit. In particular, the relation between the Dilution of Precision (DOP) and the number of visible satellites has been deeply studied. Results representing the assessment of DOPs, of the interference coming from interoperable signals and of the position accuracy versus the number of satellites in view are shown under many different conditions and simulation scenarios. In order to produce realistic results representing the performance of a multi-constellation GNSS receiver, satellites selection techniques have been also considered. A geometry based algorithm taken from the literature has been chosen to reduce the computational complexity of the brute force approach, inapplicable to such big simulations. Starting from this approach, a refined selection algorithm which combines the user received power monitoring with the geometric information will be also proposed for the GDOP optimization. The impact of the selection algorithms on the global performance has been evaluated E170and the results are here presented. The paper is closed with conclusions and comments on the obtained results and on the possible way forward.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	1207 - 1217
Cite this article:	Paonni, M., Fontanella, D., Eissfeller, B., Pratt, A.R., "Multi-Constellation Interoperability Interference Assessment in the Framework of GNSS Modernization: An Evaluation of the Impact on the Receiver Performance," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 1207-1217.
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