GPS Jamming Extends to Low-Earth Orbit as Pentagon Races to Bolster Constellation
The jamming of GPS signals around Ukraine has become so severe it is even affecting satellites up to 1,200 miles above the Earth’s surface—a striking example of why the Space Force and the Pentagon are moving to bolster the ubiquitous service, experts say.
----oooo00O00oooo----
Jeg har tidligere beskrevet (Under rubrikken Space) satellittene Airbus har skutt opp i samarbeid med fransk forskning, for at de sammen skal kunne danne seg 3-D bilder av jordas overflate. De begynner med Frankrike. Det betyr en kart/billedbase som sammen med AI kan gjøre GPS overflødig i mange sammenhenger. Test av ny type INS bidra til det samme. Disse elementene bør få mer presse.
Her meldingen lagt ut tidligere:
Airbus-built CO3D constellation successfully launched to map our planet in 3D
Toulouse, France, 26 July 2025 – The four Airbus-built CO3D (Constellation Optique 3D) satellites have been successfully placed into orbit by an Arianespace Vega-C rocket from the European Spaceport in Kourou, French Guiana. The satellites, developed in partnership with the French Space Agency (CNES), will now commence their mission to create a highly detailed 3D map of the Earth’s surface.
The dual-use CO3D satellites will deliver a global high-resolution Digital Surface Model (DSM), providing 50 cm stereo imagery to CNES, and 2D imagery to government and commercial clients, further strengthening Airbus's comprehensive suite of optical and radar satellite solutions.
“The successful launch of the CO3D constellation is a testament to European ingenuity and a major step forward in our first class Earth observation capabilities,” said Alain Fauré, Head of Space Systems at Airbus. “Thanks to our strong partnership with CNES, these satellites, based on our next-generation S250 product, can now deliver a game-changing 3D map of our planet and provide high revisit and high resolution observation capabilities. This programme, which is already attracting significant interest in today’s geopolitical context, showcases our commitment to technological, industrial, and commercial innovation.”
The four 285 kg satellites are now in a Sun synchronous orbit at an altitude of 502 km. Over the next six months, they will undergo in-orbit testing before beginning an 18-month campaign to deliver a 3D map of France and the ‘crisis arc’ to CNES. The data will feed a cloud-based ground segment operated by Airbus to produce the final 3D map, supporting critical military and civil applications ranging from geology and hydrology to urban planning and civil security.
The CO3D satellites feature several technological innovations, including a new observation mode, called Step and Stare. Each satellite uses its matrix detector to shoot images (Stare) and pave the area of interest with images of about 7km x 5km. The spacecrafts’ outstanding agility allows them to quickly reposition between successive pictures (Step) allowing each of them to provide the user with 7, 14, 21 or 28km swath images.
The CO3D programme benefits from manufacturing expertise gained from the OneWeb constellation satellites’ development, utilising a modern, digitalised assembly line in Toulouse that draws inspiration from the automotive and aeronautical industries. Several pieces of equipment use commercial off the shelf components that are adapted for use in Space to provide CO3D with the best performance from the wider industrial domain as well as a customised level of space-ready quality.
(Red.)
The mission will test laser communications using commercial satellite networks and the use of quantum inertial sensors in GPS-denied environments. Read More |
Ingen kommentarer:
Legg inn en kommentar
Merk: Bare medlemmer av denne bloggen kan legge inn en kommentar.