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Mega-constellations are large networks of low-cost satellites, operating in Low Earth Orbit, providing low latency communication, worldwide coverage and low-cost broadband capacity. This study identifies promising services/applications based on mega-constellations, starting from user requirements, deriving the system architecture, assessing the business opportunity and identifying the required actions for the services/application implementation and commercial roll-out.
Critical public infrastructure is migrating to IP which makes optimization of hybrid networks essential to provide the performance needed.
The overall objective of the project is to develop a testbed to study QoS based routing in integrated satellite-terrestrial networks. Such networks provide multiple parallel or serial paths between the communication end points.
Sat4Train provides multi-bearers train-to-ground communication integrated with Satcom for railway applications, including train control systems. It is based on bearer-independency and separation of the application layer from the radio access technologies. It allows the use of any available terrestrial and satellite public communication service. Quality of service is guaranteed by cognitive algorithms, supporting the bearers selection on a predictive-model basis.
The SCAT project objective is to design, develop and prototype a miniaturized C-Band Transceiver for the management of remote controls and telemetry on Small Satellites, with the additional capability to be used as medium rate feeder link, up to 40 Mbit/s.
Moreover, SCAT project is aimed at lowering radio regulatory hurdles for small satellite missions.
The activity includes the design and development of the W-band beacon together with the propagation receivers and the manufacturing of the Cubesat platform that will host the beacon. The objectives are the undertaking of atmospheric channel propagation measurements of the signal from this beacon and the analysis and delivery the processed propagation data at W-band. This work will help prepare for future High-Through-Put satellite communication systems.
The triple band feed horn is addressing the increasing use of Ka-band payloads for broadband applications on satellite orbital slots that also provide TV services in Ku-band. This means that space assets at the same orbital slot can be used to deliver these services to end-user households via a single antenna.
The objective was to design, manufacture and test a high voltage power module breadboard within electronic power conditioners to enable operations at higher temperatures. An evaluation was performed on critical identified components specifically on Silicon Carbide High Voltage Diodes and High Voltage Capacitors. In the frame of this project, TAS-B has also evaluated a new technology item in order to sustain high temperature environment in potted HV Module.
Through the Artes C&G R&D project “MOB PPP” (Pre & Post Processors for L-band and S-band Digital Beam Forming GEO Mobiles) with ESA, Kongsberg Norspace has designed, developed and successfully qualified an EQM suitable for pre & post processing of digital beam forming L- & S- band mobile services satellites
The Sat>IP WiFi Hotspot idea is a device that closely integrates a traditional SAT>IP server and standard WiFi router into a single system. Primarily the device will be used in public spaces to convert broadcast linear TV into IP and multicast it over a network to a potentially large number of mobile (wirelessly connected) client devices.
The product developed in this activity supplements the industry’s preferred reflector modelling tool, GRASP, by adding fast modelling of feed chains as well as optimization capabilities. The new add-on product to GRASP will offer a unique single-tool solution for an end-to-end RF design of space born reflector antennas and reflector-based user terminals.
Development of the second generation Maritime Safety Terminal (MST) and gaining Global Maritime Distress and Safety System (GMDSS) FleetBroadband approval by the International Maritime Organization (IMO).
The VDES uplink testbed consists of a fast software based global system simulator, a hardware rack for ship transmitter or a satellite receiver testing, a software PL modulator/demodulator and a low power test transmitter.
The system is used to test VDES compatibility and system performance over a wide range of conditions.
The project entailed the development of an “Always Online” single enclosure, outdoor grade, data router capable of connecting local users and systems over wired and wireless Ethernet to remote sites vial cellular and satellite communications networks.
Providing a lower-profile antenna for Satellite communications unlocks larger markets as long as the price does not rise disproportionately. Our design offers on the relatively low profile achievable with the lens concept with uncompromised RF performance and at a cost comparable to that of a reflector based system.
The output of the current generation of digital processors, used on commercial satellite missions, is either at baseband, or a low IF. This signal must then be up-converted to the operating frequency of the spacecraft, such as C, Ku or Ka-band. The need for these up-converters significantly increases the cost per output of digitally processed payloads. This study has investigated if/how conventional frequency up-converters could be replaced with an Ultra-highspeed DAC’s
The aim of the project is to develop a Frequency Flexible Command Receiver Prototype Flight Model and to have it launched on board Eutelsat E8WB. Performance data are to be documented during unit production, Satellite IOT and after an operational period of 12 months.
The Ka-band feed positioner enables cross polarisation to be optimised, while
the terminal is transmitting. For 1.8 and larger offset Ka-band reflectors, this
saves a lot of installation time, because the AzEl don’t need adjustment. Having
set the AzEl for receive cross polarisation, the transmit will be a few millimetres
away, and this can be achieved in a few seconds by moving the feed.
For inclined tracking, the motorised feed saves cost, freight, installation time
and running costs compared to a AzEl solution. The feed can be fitted
retrospectively to an existing antenna. It is positioned by connection to TLE.
Waveguide harnesses for multi-beam satellite applications are contributing a substantial portion of the overall payload mass budget.
Thus, a novel bundled waveguide harness solution has been developed that provides essential advantages over state-of-the-art implementations. It does not only exhibit mass savings of more than 20%, but also improved insertion loss, compact size, facilitation of the installation and remarkable cost reductions.
The project’s target is the optimization of the air interface for the high capacity demand in HTS as well as the design and development of a prototype receiver.
In this activity, the consortium investigated an exhaustive and
comprehensive approach towards devising and prototyping an
enhanced cost-effective modem for MEO satellite broadband access.
The main prototype activity considered diversity combining and
seamless handover without packet loss. Additionally a scenario for
coverage extension through side-lobe communication was
investigated.
The programme comprised four work packages, the first to define a partial EOR product, the second to define a common core the MPF platform, the third was to define a number of specific tasks for the light E3000 EOR product and the forth was to define a number of specific tasks for the heavy E3000 EOR product.
The objective of this project was to de-risk technologies and critical processes to be able to develop an automatic manufacturing of PhotoVoltaic Assemblies (PVA). This study was concluded with the successful manufacturing and thermal cycling of 2 PVA coupons.
Additionally a co-engineering study was performed with tool suppliers, to define a preliminary technical solution for the PVA automated manufacturing line.
Two antenna configurations have been selected as references for future development of Large Deployable Reflector Systems. One of 12 meters aperture for say L-S band and one of 5 meters aperture for say Ka band. For each Antenna, the architecture of the reflector has been identified and investigated, inclusive of accommodation on commercial spacecraft. Requirements / roadmap / cost for LDR development have been identified.
The Low Rate VSAT SCADA Network development has result in a unique low-data rate DVB-S2/RCS terminal optimized for SCADA applications, as well as a private, single user hub for network configuration, control and monitoring.
PhWP evaluates a lightweight and fully embedded alternative to common electrical temperature sensors for satellite housekeeping. OHB System AG and the subcontractors HPS Lda. and Technobis TFT review the possible usage of fiber-optical sensors embedded in aluminum and CFRP spacecraft panels.
This project investigates the suitability of additive manufacturing for the fabrication of RF user terminal front-ends for communications-on-the-move applications. Three different components taken from commercial terminals are successfully implemented: a diplexer, an OMT, and an antenna array. All the components are manufactured by stereolithography of polymer materials followed by a proprietary electroless copper plating procedure developed by Swissto12.
Enhancing capacity and flexibility is one of the major challenges for
new-generation Ku-band payloads. One of the main axis is the
introduction of flexibility within conventional payload with the
qualification of Ku-band flexible frequency converters.
The activity aims to significantly reduce the cost of LTE-based interactive mobile services via the seamless and efficient integration of future interactive mobile satellite networks in the next generation 3GPP architecture, and to facilitate service creation and new business models for the satellite industry.
The objective of the COMFIL project is to develop and evaluate compact concepts for C-band and Ku-band broadband bandpass filters having a very low insertion loss and wide spurious free range in the out-of-band.
The programme comprised four elements, the first to develop a range of three E3000 SXL Satellite Platforms (featuring CPS MkIII), the second was a combination of E/W radiators and TWT implementation enhancements in order to extend thermal capability, the third was a range of payload implementation improvements and the final package was to develop the products necessary to offer a E3000 100V platform into the market.
Among all antenna payload solutions suitable to support reconfigurable and flexible broadband satellite communication missions, DRA antenna systems represent the typical candidates to fulfill these requirements.
Unfortunately, periodic DRA antenna solutions are characterized by different drawbacks, mainly related to the very large array aperture dimensions needed to obtain narrow high-gain spot beams, with as consequence very high number of active radiating elements, high system complexity, high weight, difficulties in accommodation and high manufacturing costs.
Another key point for future satellite telecommunication missions is to consider antenna systems able to operate simultaneously at both receive and transmit bands using the same antenna aperture.
The transmit/receive DRA antenna characterized by the same aperture for satellite applications presents many difficulties at higher frequency as the Ka Band, due to the operative frequency band considering a frequency ratio 1.5 between transmit and receive. In this respect, the selections of the adequate radiating element inter-spacing and the antenna aperture size have to consider both transmit and receive performances.
A very interesting antenna solution potentially suitable to overcome all these drawbacks is represented by an Imaging antenna architecture fed by two small active phased arrays, one for TX and one for RX.
Moreover, in order to minimize the number of radiating elements, satisfying pattern requirements in terms of sidelobe and isolation levels, aperiodic/sparse array configurations have been considered to feed the Imaging antenna system.
In the frame of European efforts for independence regarding equipment for satellite communication, this project aims to develop ITAR free 20µm bi-propellant particle filter to meet applicable requirements related to the existing European Geostationary Telecom platforms.
