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16 results found
Absolute Navigation at Sub-cm Level - Phase 2

Currently GNSS Systems provide services for instantaneous absolute positioning accuracy of a few meters, assuming no local obstructions above 5-10 degrees elevation, based on the navigation signals broadcast by a MEO constellation.

Spain

20-P-O-NAV-01

Deimos
Sub nano-g MEMS accelerometer for high precision orbital manoeuvres

The inertial navigation market has a need for accelerometers with high sensitivity, low noise, low cost and low power consumption. ESA has identified high accuracy accelerometer units as a priority in a 2019 roadmap. The current state of art products are not able to deliver. Here we introduce a novel accelerometer design, using concepts originally developed for gravitational wave detector physics, which will enable an accelerometer to meet these requirements.

The Netherlands

ETD 2020-07-d

Innoseis
Angle Carrier Phase Altimetry with GNSS Reflected Signals: exploring beyond the PRETTY mission

This activity is intended to investigate the Grazing Angle (GA) Carrier Phase Altimetry (CaPA) using signals transmitted by the Global Navigation Satellite Systems (GNSS). The CaPA technique requires that the electromagnetic signal reflects coherently rather than in a diffuse regime. The hypothesis is that GA geometries enhance the likelihood of coherence scattering. It was also hypothesized that the combination of signals at slightly different frequency bands could expand the coherence conditions (widelane techniques, WL).

Spain

ETD 2020-05-b

IEEC Barcelona
Artificial Intelligence for Terrain relative Navigation in Unknown Environment (ATENA)

Space missions benefit greatly by the capability of the on-board GNC system to adapt rapidly to unknown environment. Autonomous vision-based navigation is a particular technology under implementation in several ESA missions. One of the most interesting applications in that field is the proximity operations around a small asteroid, like those in HERA.
The goal of this activity was to develop a navigation algorithm with the capability to fly over an unknown terrain and achieve better navigation performances than current vision-based techniques based on unknown feature tracking.

Spain

20-D-O-TEC-01

GMV
Inflatable Systems for Aerocapture and Aerobraking

This work has primarily focused on establishing scenarios where inflatable devices could be the most useful. Given that these missions rely on aerodynamic drag that results in (potentially significant) heating, the authors have sought to find solutions to minimize heat fluxes acting on the device surface, and especially keeping it within the limits of flexible/foldable TPS materials for the aerocapture scenario.

Portugal

19-D-S-OPS-02

Spin.Works
LIFELINE

The aim of the LIFELINE project was to perform a feasibility study of a Relativistic Positioning System. Nowadays, all GNSS in operation 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. A practical RPS would consist, for example, in a constellation of satellites, each one broadcasting not only its General Relativity coordinates (proper times or other observables) at emission but also the coordinates that it receives from the other satellites.

Spain

19-P-O-NAV-03

GMV
Subwave+

A GSTP Element 2 activity with France, has taken an existing product used to help signals from satellites reach underground and developed and improved it for navigation purposes.

France

GT26-024ES

SYNTONY
De-risk assessment: OrbFIX - PPP GNSS Receiver for CubeSats

A new activity with GSTP Element 1 and Romania has developed a GNSS receiver based on COTS components that can achieve positioning accuracy to less than 10 cm without trading a loss in robustness.

Called OrbFIX, this GNSS receiver for space can produce high positioning precision in the vital low volume, mass and power consumption required for small satellites. At the same time, it is being produced for low cost, making it affordable despite its advanced technology.

Romania

G617-241TAdc

Romanian InSpace...
Maritime Adaptive GNSS Safety concept (MAGS)

The MAGS project focused on developing a Maritime Adaptive GNSS Safety Concept to support mariners, particularly within the vicinity of ports.

Germany

15/113

DLR
Real-time optimal control of quadrocopters using deep representations of the optimal state feedback

A major challenge in the field of control is to achieve reliable, aggressive, high-speed control of autonomous vehicles. In space, this may involve spacecraft that need to land under harsh conditions, or even – in an extreme scenario – negotiating asteroid debris fields at high speeds. On Earth, the exemplar task that draws most attention currently is high-speed autonomous flight of drones. The application of optimal control on board limited platforms has been severely hindered by the large computational requirements of current state-of-the-art implementations.

The Netherlands

18-8510

TU DELFT

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