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Invitations To Tender

093 - Enabling PPP ambiguity resolution in satellite and terrestrial frequency-varying carrier-phase signals

Carrier-phase signals constitute the key observations in Global Navigation Satellite Systems (GNSS) for precise user positioning. To fully exploit these high-precision measurements, one needs to recover the integer nature of ambiguities. The Integer Ambiguity Resolution enabled Precise Point Positioning (PPP) concept, namely PPPAR, has proven to be capable of delivering centimetre-level…

089 - Modelling Quantum Sensors in a realistic navigation system context

As well as the potential next generation quantum time and frequency sources, the world of quantum systems contemplates evolutions of gyroscopes, accelerometers, gravitational sensors and magnetometers based on quantum effects. Predictions of the performance of these new quantum sensors offer the prospect of accurate navigation without GNSS for long periods of time with some predicting that GNSS…

082 - Low noise frequency tunable microwave generation using photonic integrated microcombs

Ground based optical free space communication experiments have enabled >1 Tb/second communication links based on the multitude of carriers that are individually modulated to carry information. Optical frequency combs with line spacings that match the ITU grid have potential to implement free space communications in space.  These advances utilize the unique features of microcombs: in contrast…