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System Suitability Study for Train Positioning Using GNSS in ERTMS in 2020
The objective of this activity is to study the suitability of the current generation of SBAS for use in an evolution of the European Rail Traffic Management System (ERTMS) using GNSS for virtual balise detection.
This activity focuses on the current generation of the European SBAS, EGNOS v2 (GPS L1 only) and includes the following aspects:
Review and consolidate requirements and…
Emits link: http://emits.sso.esa.int/emits/owa/emits.main
Quantum-based sensing for PNT
The exploitation of quantum physics has already enabled revolutionary technical applications and industries of enormous economic scale. The semiconductor industry alone is currently a €500 billion market, giving rise to industries on an even larger scale (smartphones, computing, software, etc.).
Quantum physics is now again set to radically change several industries, including…
Emits link: http://emits.sso.esa.int/emits/owa/emits.main
PNT using Neutrino Particles
This proposed activity represents an innovative concept to realise Positioning, Navigation and Timing using neutrino particles. At present, standard navigation approaches – including satellite navigation – rely on direct line-of-sight RF and optical communications. Neutrinos move at around the speed of light, have no electric charge and are low mass, thus showing very low interaction with…
Emits link: http://emits.sso.esa.int/emits/owa/emits.main
Feasibility study of a space-based relativistic PNT system
All GNSS in operation at present are based on Newtonian physics and rely on global reference frames fixed to Earth. Relativistic effects are treated as deviations that need to be corrected for. Precision and stability over time of the reference frames is provided via ground stations and they are limited by the Earth’s dynamics (e.g. variations of the Earth’s rotation rate, plate tectonics,…
Emits link: http://emits.sso.esa.int/emits/owa/emits.main
Ultra-Low Power Device Positioning Concepts
There are an increasing number of IoT applications, and projections show that global Low Power Wide Area (LPWA) connections will increase by almost one order of magnitude in the next five years. Terrestrial networks are continuously targeting evolutions of the IoT markets. For example, the latest release of 3GPP standards has introduced modifications to their standard (e.g. NB-IoT) to comply with…
Emits link: http://emits.sso.esa.int/emits/owa/emits.main
Precise Relative Positioning in MEO to support Science Missions
Precise 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…
Emits link: https://emits.sso.esa.int/emits/owa/emits.mainl
Multi-Sensor, Multi-System for Space PNT Applications
Position 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…
Emits link: https://emits.sso.esa.int/emits/owa/emits.mainl
Enabling Ultra-High Accuracy Positioning in Challenging Environment
The need for high accuracy PNT in challenging environments has become obvious and, henceforth, mandatory for many applications. Currently, an accuracy target of 1 m in an urban environment seems a realistic achievement with multi-GNSS PPP or RTK capabilities. A significant R&D effort is ongoing to reach this target in operational products, using carrier phase positioning (PPP and RTK) and European…
Emits link: https://emits.sso.esa.int/emits/owa/emits.mainl
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