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Start date: 01/09/2022Date of Completion: 28/02/2024Global Navigation Satellite Systems (GNSS) have become the primary marine aid-to-navigation and source of Position, Navigation and Timing (PNT) information. Yet, all GNSS are vulnerable to natural interference, deliberate and accidental jamming and spoofing. Trials have demonstrated that degraded GNSS produce hazardously misleading information and erroneous vessel positions without an alarm being…
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Start date: 19/05/2021Date of Completion: 21/05/2021Position uncertainty during autonomous manoeuvres such as orbit-raising/de-orbiting requires that the local knowledge during low thrust (i.e. with electric propulsion) is accurately determined. Current orbit-raising assumes semi-autonomous control assisted by GNSS, with a long time integral to measure increasing altitude and trajectory of the satellite. The use of a hybrid GNSS unit that…
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Start date: 21/02/2018Current IMO work on guidelines for shipborne PNT data processing will define a high level framework for the processing and combination of data of multiple systems and sensors in a maritime PNT receiver. The definition of IMO guidelines are expected to significantly progress in the course of 2017. Therefore, it is considered of paramount importance to complement this work with further studies on…
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Start date: 23/01/2018The Galileo System Time (GST) timescale is the cornerstone for the operations and performance of the Galileo System. It should be stable, traceable and always available. The current system time is provided via a physical on-ground clock which limits the performance. A time scale built with pulsar measurements, i.e. measurements from celestial objects emitting radiation in pulses, would typically…
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Start date: 01/06/2019Precise relative positioning in MEO (Medium Earth Orbit, at altitudes ranging between 2,000 and 36,000 km) exploiting GNSS is a subject that has been little explored while having high potential for enabling an interesting set of applications based on space-to-space interferometry. Establishing accurate inter-satellite baselines based on GNSS measurements would open the door to new missions at…
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Start date: 05/07/2019DDK Positioning will develop and deliver a Precise Positioning Service that will be delivered on the Iridium Communication Satellite Service. As a new global positioning service, new and unique characteristics of the service will be developed, with the aim of delivering a service for large volume markets, these characterises will be: • Network robust • Instantaneous start up…
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Start date: 05/03/2021The project aims to develop a Cloud-based Snapshot GNSS solution that provides augmented levels of sensitivity, potentially extending the use of GNSS PNT services to degraded, or even currently denied scenarios, such as urban canyons or mild indoor facilities. Within the project, Albora is developing a disruptive technology, ALCORE, based on the combination of high sensitivity techniques and…
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Start date: 19/02/2021Envisage Space has developed analytical software which we call RelyMap, which is designed to analyse wide areas (pan-city/region) of a complex urban environment and identify areas where GNSS signal provision is either impacted or blocked due to anomalies such as building shadowing etc.RelyMap Enhance builds upon this technology and understanding to enable improved location accuracy for GNSS…
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Name: Institute for Future Cities, Strathclyde University
Country: United Kingdom
Website: https://www.strath.ac.uk/cities/
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Start date: 01/05/2022Real-time S-GNSS® receiver This project is to design and build a real-time SDR (software defined receiver) enabled with Supercorrelation™ technology. This S-GNSS receiver can provide increased accuracy, sensitivity and reliability compared to standard GNSS receivers. Supercorrelation measures satellite signals based on angle-of-arrival, enabling rejection of unwanted signals from…
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Start date: 08/12/2022In conventional Global Navigation Satellite Systems (GNSS) receivers, tracking is performed in several independent tracking loops that provide measurements (pseudo ranges, pseudo range rates, carrier Doppler) to a navigation algorithm (Kalman filter), controlling the Position, Velocity, Time (PVT) solution. In Vector Tracking Loop (VTL) , the two tasks of signal tracking and PVT estimations are…
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