Nebula Public Library

The knowledge bank of ESA’s R&D programmes

Format: 2023
Format: 2023
Format: 2023

126 results found
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Glass cells are typically used in Frequency Standard, both as reference cell, in the lamps for atomic pumping and as dissociator bulbs.When used in a lamp (RAFS or Mercury ion trap), the cell must be sufficiently resilient for avoiding limitations in the lifetime due to diffusion of material (i.e. Rubidium or Mercury) inside the bulb walls, given the combination of dissociation mechanisms and high temperatures.

Switzerland

TDE

T606-502ET

OROLIA SWITZERLAND SA

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Imaging, Radar and LiDAR system technologies are required to enable the realisation of fully self-driving (autonomous) cars, known as Level 5 Advanced Driver Assistance Systems (ADAS). Of these sensor types, commercial LiDAR is far behind the other options in terms of endurance, reliability and cost. These concerns are primarily due to the current LiDAR systems use of scanning technology that relies on many moving parts.

Ireland

TDE, GSTP

GT17-178MM

PixQuanta

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The pre-operation demonstration will be used as a proof of concept towards the World-Radio Conference to demonstrate the feasibility of the VDES in a representative in the field trail. The activity will also provide the capability of monitoring the VHF maritime spectrum both from external interference sources (such as land mobile) as well as intra-system interference caused by VDES different components (such as VDE terrestrial components).
 

Norway

GSTP

GT17-113ES

SPACE NORWAY AS

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Satellites in all application domains include a communication subsystem with similar core functions, specific features, and different operating frequencies. ;;Central to this subsystem is the Transponder equipment. ;Its current implementations already include flexibility in terms, e.g. of modulation and coding schemes. ;However missions placing specific requirements must still bear the cost of adaptations. ;Moreover the accommodation (power, mass) of such equipment is a burden for smaller missions.

Belgium

GSTP

GT17-111ES

Antwerp Space N.V.

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Sweden

GSTP

GT17-137TIf

OMNISYS INSTRUMENTS AB

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The next generation of GNSS is expected to be more demanding in terms of RF power transmission in order to guarantee a proper availability and quality of the service, hence, enhanced interference immunity and indoor positioning could be achieved.The HPA currently under development for this application are targeting power levels in excess of 300 W.

United Kingdom

TDE

T606-403ET

COM DEV EUROPE LIMITED (T/A HONEYWELL)

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Over the last decades, the spaceborne remote sensing community has been focused on the development of imaging radars at RF frequencies such as S-band, L-band, C-band and X-band.


ITU regulations currently permit the use of Ka-band for active spaceborne microwave remote sensing but only few missions are considering applying this frequency band such as the SARAL mission with the ALtiKa instrument (launched 2013).

Germany

TDE

T106-404ET

DLR - German Aerospace Center

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Current single-frequency Satellite Based Augmentation Systems (SBAS) and planned dual-frequency multi-constellation (DFMC) SBAS systems enable approach operations with vertical guidance with time to alarm (TTA) of 6 seconds, but do not support auto land operations with decision height (DH) much less than 200 feet, and time to alarm down to 1-2 seconds . These critical TTA requirements cannot be met by having all integrity monitors centralized at the Ground Segment. Therefore, there is a need to distribute the integrity monitors amongst different Ground, Space and User Segments.

Italy

TDE

T606-513ET

MICROWAVE VISION ITALY SRL

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GNSS and other positioning systems are expected to have a very important role in Smart Cities. In this context, the design of the high-level architecture of a testbed to support future applications of GNSS and other positioning systems in Smart Cities is of high interest. The design of this testbed shall consider as baseline the availability of a network of distributed smart sensors, which are remotely accessible and configurable from the cloud, and existing network infrastructures shall be considered.

Spain

TDE

T606-507ET

ROKUBUN S.L.

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The need for miniaturization of Satellite IoT terminals, in terms of size, weight and consumed power, is well recognized as a key enabler for the adoption of satellite IoT solutions. ;There are on-going or planned design and development activities targeting power and energy efficient access protocols for direct satellite access of IoT terminals (in the excess of 10000 units).

Spain

TDE

T506-504ET

EGATEL S.L.

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