Onboard time synchronization is an important requirement for a wide range of low Earth orbit
(LEO) missions such as altimetry or communication services, and extends to future position, …

Over the last decade, chip-scale atomic clocks (CSACs) have emerged as stable time and
frequency references with small size, weight, and power (SWaP). While the short-term stability …

The feasibility of precise real-time orbit determination of low earth orbit satellites using
onboard GNSS observations is assessed using six months of flight data from the Sentinel-6A …

Efforts on positioning, navigation and timing (PNT) services from low Earth orbit (LEO) have
significantly increased over the last years not only within research institutions, but also by …

The need of a robust navigation solution increased during the last decade. As an example,
for autonomous driving it is essential to have a stable satellite signal tracking even in difficult …

The feasibility of precise real-time orbit determination of low earth orbit satellites using
onboard GNSS observations is assessed using six months of flight data from the Sentinel-6A …

The NetSat mission by the Zentrum für Telematik eV and the University of Würzburg consistsof
four identical CubeSats which are supposed to launch in early 2019 to demonstrate …

This paper presents and discusses some of the enhancements in robustness against jamming
and spoofing using unique features of the cryptographically protected Galileo PRS signals…

Regular GNSS receivers track the signal of each satellite in view independently, which
commonly referred to as scalar tracking. However, with this method of signal tracking the visibility …

The GOOSE (GNSS Receiver with open software interface) Software-Defined Receiver has
been developed at the Fraunhofer Institute for Integrated Circuits (IIS) in Nürnberg, Germany. …