Satellite capacity from a different angle
A one-shop-stop solution for affordable access to satellite services is one step closer to the marketplace, thanks to a little ingenuity from industry and ESA.s SATCOM-APPS Newcomers Initiative programme.
This solution, developed by YELLOWSAT (FR), combines low-cost tracking terminals, real-time Monitor&Control features and capacity from satellites operating on extended lifetime in inclined orbits.
Capacity from such satellites is typically sold at a fraction of the cost, but tracking these satellites can get expensive due to the added complexities - such as a closed loop control system - required for tracking stations. Through the ESA SMall Autonomous Re-pointing and Tracking station (SMART) project, YELLOWSAT was able to further develop its system to track satellites placed in inclined orbits using an open-loop solution.
The SMART solution eliminates the need for complex antenna closed-loop controller/beacon receiver equipment. Combined with the use of off-the-shelf DC actuators and high-performance motor control electronics, the SMART project has demonstrated that the YELLOWSAT open-loop tracking solution is effective and reliable.
Several terminals covering both Ku-band and C-band have been validated for use on both Single Channel per Carrier (SCPC) and Time Division Multiple Access (TDMA) platforms such as DVB-RCS and iDirect on inclined orbits. The solution offers access to the orbit models of all inclined satellites, making it easy for the end-user to quickly repoint the terminal to any of the inclined (and non-inclined) satellites in the field-of-view.
Other objectives of the ESA project included the industrialisation of 1.2m Ku-band and 2.4m C-band terminals in order to further reduce the costs as well as the development of a Monitor&Control service. All of these accomplishments were finalised in April 2012. YELLOWSAT is now able to offer a comprehensive service package including tracking terminals on SCPC and TDMA platforms, satellite capacity and Monitor&Control features at competitive costs.
Since July 2011, two SCPC C-band stations are fully operational in Congo Brazzaville on the inclined orbit NSS 703 satellite linked to the hub at YELLOWSAT premises in Vitry (FR). Two other C-Band stations are planned to be installed in Congo Brazzaville this year.
.The SMART project has obtained important results in a short time-frame and with limited resources. This further highlights the effectiveness of the ESA ARTES 3-4 Newcomers Initiative to support SMEs in developing innovative applications and bring them to the market,. says Davide Tomassini, ESA technical officer for the SMART project.
A second increase in capital for about 2.7MEUR has been acquired by YELLOWSAT thanks to a partnership with Magellan Industries. This will allow the company to further explore its options in the competitive satcom marketplace.
.The contribution of ESA expertise for the management of the SMART project in the critical areas of terminal development and industrialisation, validation of TDMA compatibility and development of a centralised Monitor&Control platform was key to YELLOWSAT, especially in the early stages,. explains Daniel Tits, technical director of YELLOWSAT. .It demonstrates that ESA can be very useful in helping SME.s to develop sustainable services for the highly demanding space industry..
More information about YELLOWSAT and ESA.s Newcomers Initiative can be found by clicking on the links in the column to the right.
The Integrated Applications Promotion programme (IAP) in the Directorate of Telecommunications and Integrated Applications is now re-advertising a vacancy for an Internal Research Fellowship with a starting date in Autumn 2012. The Research Fellowship will be based at Harwell in the UK. The focus of the fellowship is on applications development; as such it is relevant for applicants from a wide range of academic backgrounds, which may include economics, business studies, commerce, geography, ITC, or a specific industry sector with a potential need for space-based services. Expertise in space science and technology, whilst preferred, is not a pre-requisite.
Details on the Demonstration of
Small and mid-sized airports face many challenges. Airport traffic is unevenly distributed over the day; general aviation traffic directed to minor airports cannot usually rely on the availability of flight information services, and in many cases general aviation aircraft flying inside non controlled airspaces cannot rely on air traffic controllers ensuring separation against other aircraft.
Another issue faced by small airports is the production Aerodrome Obstacle Charts. This must be done periodically to ensure the required level of safety ANSPs (Air Navigation Service Providers). Currently this is done by the use of expensive aero photogrammetric techniques and on-site surveys by traditional topographic techniques.
Together with the Swiss Space Office, the European Space Agencyâs Integrated Applications Promotion (IAP) programme wishes to announce a vacancy for a Swiss ESA IAP Ambassador Platform manager. This manager will be responsible for the Swiss IAP Ambassador Platform (AP), and will start their duties on 1st October 2012.





The control and surveillance of borders is an essential function of any state which if done efficiently, can lead to a reduction in cross-border crime and illegal migration.
During this proof of concept demonstration techniques for tracking patrols and distributing the information to commanders, the use of satellite communications, and Earth observation techniques were demonstrated. The Earth observation products included reference mapping, hot spot monitoring, and techniques to develop permeability mapping for the border area. These products were distributed to the field locations over satellite communications links.