A High-End Integrity Receiver for the Combined GPS & Galileo Systems: Digital Signal Processing

J.A. Cooper, G.J. Brodin, E. Aguado, P. Hellen

Abstract:	RHINO (Receiver for High Integrity Navigation Opera-tions) is a collaborative project that is providing the basis for the development of future Galileo receiver products. The project is jointly funded by Raytheon Systems Ltd (RSL) and the British National Space Centre. The project team has been formed from acknowledged leaders in each field, with: • Roke Manor Research designing the RF front end; • RSL designing the base-band digital signal process-ing, higher level processing functions and overall sys-tem design; • and the Institute of Satellite Navigation at the Univer-sity of Leeds designing the acquisition and tracking algorithms. In addition, Helios Technology is undertaking a study of markets and applications. The project involves the development of an experimental, generic and highly-configurable Galileo/GPS receiver intended to allow the exploration of architectures and al-gorithms appropriate to a range of applications, including the most demanding monitor and reference station opera-tions. The development is being carried out prior to the Galileo signals being frozen. These two aspects have been the prime drivers in selecting a no-compromise ap-proach to the architectural design within a flexible and programmable configuration using, where appropriate, commercially available hardware. In particular the base-band processing is carried out using a PC hosted card comprising a 6 Mgate FPGA and Texas Instruments DSP supplied by Hunt Engineering. The project has been running for 1 year to date. Currently the base-band processing aspects have been designed, a single channel architecture has been implemented and tested against synthetic signal data on representative GPS C/A and Galileo BOC(2, 2) signals. Shortly a Galileo Test Signal Generator, supplied by DSTL, will be used to evaluate and validate the design in real time. The RF front end ASIC has been designed in detail, to the stage where the die can be produced.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	1973 - 1982
Cite this article:	Cooper, J.A., Brodin, G.J., Aguado, E., Hellen, P., "A High-End Integrity Receiver for the Combined GPS & Galileo Systems: Digital Signal Processing," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 1973-1982.
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