April 2018
Future Cubesat swarms pose significant communications challenges
...the ionosphere/thermosphere. The ARMADA mission proposes a swarm of 20 to 100 spacecraft in pseudo-random orbits featuring GPS receivers with radio occultation. HiDEF was designed with 90 swarm spacecraft in low Earth polar orbits to monitor ...
September 2018
Bridging the ‘digital divide’ with nanosatellites
... and security. This is also essential for connected cars to ensure critical services such as emergency calling and GPS tracking that are available everywhere in the world. Left: The 3 Diamonds demonstration mission carried out commercial...
January 2019
Engineering six-hour solar eclipses with formation flying
... precise formation flying (from left to right): laser technology, RF intersatellite link, vision based navigation and relative GPS navigation. About the authors Luis F Peñin gained a PhD in Robotics and worked as a Research Fellow at JAXA on several...
January 2019
Is the NewSpace bubble about to burst?
... Networks now seems at risk because its lobbyists don’t appear capable of overcoming concerns expressed by the GPS industry about a proposed frequency change. In addition to its traditional protectors in the US Department of Transportation (DoT) and...
April 2019
Space launch industry analysis
... of each unit to make reusability truly economic. From a business point of view, December’s Falcon 9 launch of the first GPS III satellite for the US Air Force was perhaps the company’s most important launch, as it presages a lot...
October 2019
Electric orbit raising and space weather
... to the build-up of charged particles is thought to have reduced solar cell performance on the Global Positioning System (GPS) satellites, by leaving contaminated regions that partly block incoming light. By increasing the thickness of the coverglass...
