Searching for Galileo

M.L. Psiaki, T.E. Humphreys, S. Mohiuddin, S.P. Powell, A.P. Cerruti, P.M. Kintner Jr.

Abstract:	In late December 2005 the GIOVE-A test satellite was launched by the European Space Agency (ESA). The present paper describes an analysis of the L1 signals transmitted by this satellite. The assessment was performed using data collected from the deep space antenna of the DLR in Weilheim. The gain of the antenna is ca. 52 dB. This raised the signals above the noise level, allowing a detailed analysis even without knowing the ranging codes. In the initial operations phase, the signal showed minor deformations, which are discussed in detail. These deformations can be explained by a slight non-linearity and some dispersion in the transmit chain. The presence of these deformations would have caused a delay between the open and public regulated service and also a dependency of the pseudorange measurement on the estimation algorithm used. The analysis performed is generic and can be automatized to monitor operational satellites.
Published in:	Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006) September 26 - 29, 2006 Fort Worth Convention Center Fort Worth, TX
Pages:	1567 - 1575
Cite this article:	Psiaki, M.L., Humphreys, T.E., Mohiuddin, S., Powell, S.P., Cerruti, A.P., Kintner, P.M., Jr., "Searching for Galileo," Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006), Fort Worth, TX, September 2006, pp. 1567-1575.
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