Development of a Prototype Spaceborne Galileo Navigation Signal Receiver

Stefan Berberich, Peter A. krauss and Andrei Botchkovski

Abstract:	Although the structure of the Galileo signal is still under investigation, Astrium GmbH developed an experimental navigation receiver with which it is possible to verify different signal design concepts and to demonstrate their properties in hostile environments (jamming, noise, interference). In a first step, the experimental receiver is designed to process one channel with different chip rates (1 to 10 Mcps), code lengths (1 k to 10 k), PRN codes (Msequences, Gold codes, Kasami codes) and data bit rates (50 to 3000 bit/s). In a second step, the capabilities of the receiver will be extended to process several channels, higher chip rates up to 16 Mcps and code lengths up to 16 k. Furthermore, BPSK modulation will be extended to QPSK in each channel. Signal processing for the receiver is based on Astrium’s space qualified Mosaic technology. Using experience from Astrium’s spaceborne GPS receivers, main parts of signal processing such as code and carrier generation, carrier correlation, signal tracking and data extraction has been implemented in software to ensure easy adaptability to future navigation signals. Signal preprocessing and generic code correlation is implemented in hardware to decrease processor load. Digitalization and final downconversion of the navigation signal is carried out at an IF of 70 MHz. A test-bed including a programmable navigation signal generator to measure the performance has been set up. First tests showed proper operation of the prototype receiver and identified potential for further optimisations.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	855 - 861
Cite this article:	Berberich, Stefan, krauss, Peter A., Botchkovski, Andrei, "Development of a Prototype Spaceborne Galileo Navigation Signal Receiver," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 855-861.
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