Paper
An L1 or L2 Multi-Constellation GNSS Front-End for High Performance Receivers
- Authors:
- Carlos H. Muravchik; Pedro A. Roncagliolo; Javier G. García; Ramón López La Valle
- Abstract
- We present the design and implementation of a multi-constellation GNSS front-end. This front-end is able to operate in two different hardware configurations: using the L1/E1 band of GPS/Galileo and the L1 band of GLONASS, or the L2 band of GPS and GLONASS. Both of these operation modes can be implemented in the same printed circuit board by replacing only a few components. In the proposed design, the RF signals are down-converted to an intermediate frequency where the GPS and GLONASS bands are separated. Thanks to this separation, a considerable reduction of the necessary sampling rate for the digitalization stage is achieved. This simplifies and reduces the power consumption of this stage of the complete GNSS receiver. Measurements carried out to the implemented prototypes for the two different configurations are presented. The obtained results validate the proposed design.
- Keywords
- GNSS; RF; Front-End; Multi-constellation
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