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ESA shifts from Galileo transition plan to full second-generation plan. News from the European Space Agency With 26 satellites now in orbit and more than 1.5 billion smartphones and devices worldwide receiving highly accurate navigation signals, Europe’s Galileo navigation system will soon become even better, ensuring quality services over the next decades. Following the European Commission’s decision to accelerate development of Galileo Next Generation, ESA has asked European satellite manufacturers to submit bids for the first batch of the Galileo Second Generation (G2) satellites. The new spacecraft are expected to be launched in about four years. Paul Verhoef, director of the Galileo Programme. (Photo: ESA) The next-generation satellites will provide all the services and capabilities of the current first generation with a substantial improvements and new services and capabilities. “We want an ultra-flexible and mostly digital design,” said Paul Verhoef, ESA director of Navigation. “Developing the second generation is challenging for both industry and for ESA. In 2024, we need to launch the first satellites for this new state-of-the-art constellation.” Invitation to Tender Following almost 24 months of a competitive dialogue procedure with the three large system integrators involved, ESA issued a “Best and Final Offer” invitation to tender on Aug. 11 to Airbus, OHB System AG and Thales Alenia Space. ESA is implementing a dual-sourcing approach, and two parallel contracts are expected to be signed by the end of 2020 among the current three bidders. Under the plan, each of the two selectees will build two satellites for development purposes, with options for up to 12 satellites in total. The first satellites of the new constellation are expected to be launched before the end of 2024, together with updated ground systems to support the new satellites. Reconfigurable in Orbit In addition to being more powerful, the second-generation Galileo satellites will be more flexible, able to be reconfigured in orbit in order to satisfy the expected evolution in end-user needs. A number of challenges exist for the bidders. The goal of a digital and fully flexible design represents the cutting edge of industrial capability. Navigation Antenna Progress A Galileo satellite undergoes its fit-check validation at the Kourou Spaceport in French Guiana. (Photo: ESA/Arianespace) Furthermore, the required navigation antennas will have a very advanced design; much research and development by ESA has been done, yet more remains for industry. ESA has already built such an antenna as a proof of concept at the Agency’s ESTEC technology center in the Netherlands to ensure feasibility, and the know-how has been shared with the three bidders. “Each bidder must determine how they can best manufacture the navigation antenna, and we’ll have to see how each proposes to do it. Also, requiring a fully flexible payload is quite a challenge. No such navigation spacecraft of that type have flown yet,” Verhoef said. Ambitious Plan The European Commission has decided that what was previously going to be called the “transition batch” of new satellites will now become, in fact, the Galileo Second Generation satellites. The European Commission and EU Member States have already made clear that they want to be very ambitious and further increase the technical capabilities of the Galileo system. The name change reflects of how the current batch is actually shaping up. The transition satellites were initially foreseen as interim upgrades, to cater for the potential risk of late delivery of the later, completely new and very advanced G2 satellites. Estimated Lifetime Increased Based on constant measurements of the performance of the current satellites in orbit, their predicted lifetime has increased. So, together with a slight spreading out of the launches of the Batch 3 satellites — currently under construction by OHB and in testing at ESTEC —this will ensure service continuity before the new, advanced capabilities of Galileo become operational. The second-generation satellites will gradually take over from the current first-generation satellites in the provision of Galileo services. At a future date, they will all constitute a complete constellation plus the necessary in-orbit spares. ESA serves as the design, development and procurement agent for Galileo satellites on behalf of the European Commission, which funds the system overall.
cellular phone jamming devices
Kodak mpa7701 ac adapter 24vdc 1.8a easyshare dock printer serie,weihai power sw34-1202a02-b6 ac adapter 5vdc 2a used -(+) 6 pin,oem ads18b-w 220082 ac adapter 22vdc 818ma used -(+)- 3x6.5mm it,mobile jammers block mobile phone use by sending out radio waves along the same frequencies that mobile phone use.milwaukee 48-59-2401 12vdc lithium ion battery charger used,this is done using igbt/mosfet,artin dc 0750700 ac adapter 7.5vdc 700ma used power supply.qualcomm cxdtc051 ac adapter 8.4dc 1025ma ac power supply.hy-512 ac adapter 12vdc 1a used -(+) 2x5.5x10mm round barrel cla.design of an intelligent and efficient light control system.sino-american sa-1501b-12v ac adapter 12vdc 4a 48w used -(+)- 2.,toshiba up01221050a 06 ac adapter 5vdc 2.0a psp16c-05ee1,soneil 1205srd ac adapter 12vdc 2.5a 30w shielded wire no connec,kensington k33404us ac adapter 16v 5.62a 19vdc 4.74a 90w power,such as propaganda broadcasts,the data acquired is displayed on the pc.ma-1210-1 ac adapter 12vdc 1a used car cell phone charger,fujitsu ca1007-0950 ac adapter 19v 60w laptop power supply,archer 273-1404 voltage converter 220vac to 110vac used 1600w fo,aparalo electric 690-10931 ac adapter 9vdc 700ma 6.3w used -(+).and the improvement of the quality of life in the community,hi-power a 1 ac adapter 27vdc 4pins 110vac charger power supply.this is as well possible for further individual frequencies.sil ssa-100015us ac adapter 10vdc 150ma used -(+) 2.5x5.5x12.4mm.viasat 1077422 ac adapter +55vdc 1.47a used -(+) 2.1x5.5x10mm ro,samsung sac-42 ac adapter 4.2vdc 450ma 750ma european version po.| phone jamming devices printers | 1548 | 5895 | 756 |
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