Next generation of miniaturised receivers with new GNSS signals

This paper presents the key elements of the next generation of miniaturised GNSS space receivers compatible with the new and more robust GNSS signals from Galileo and modernized GPS. A quick review of applications like Precise Orbit Determination (POD) and Radio Occultation (RO) is provided together with the performance achieved in current satellites like Metop and GOCE and performance expected in future ESA satellites. The key architectural building blocks of future GNSS space receivers are presented, with special focus on components like the AGGA-4 baseband GNSS processor and also, but to a less extent, on programmable RF ASICs. These components, in combination with the more robust features from the new GNSS signals, will bring a significant improvement with respect to their predecessors (e.g. AGGA-2) and also represent an important step towards miniaturisation of the next generation of GNSS space instruments.