Xona Space Systems Inc., a startup working to build a more reliable alternative to GPS, today announced that it has raised ...

NavIC's impaired satellite navigation raises security concerns, as only three satellites with operational atomic clocks ...

WELLINGTON: The European Space Agency (ESA) has launched the first two satellites of its Celeste mission from New Zealand to begin testing a complementary low Earth orbit (LEO) layer for Europe's ...

In 2026, researchers from the Universitat Autònoma de Barcelona reported in Satellite Navigation a new outer-loop positioning framework for LEO Doppler observations that explicitly accounts for signal ...

WASHINGTON — Xona, a California-based startup developing a satellite navigation service, announced March 26 it raised $170 ...

CEDARVILLE — The United States launched the experimental GPS satellite NTS-3 in mid-August from Cape Canaveral Space Force Station, marking the first such launch in nearly 50 years. The Navigation ...

The issue intensified after the last functional atomic clock on board the IRNSS-1F satellite stopped working on March 10, ...

On Sunday, August 10, at 8:07 p.m. EDT, a United Launch Alliance Vulcan VC4S rocket will lift off from Cape Canaveral’s SLC-41 carrying the USSF-106 mission for the U.S. Space Force. The flight is ...

Global navigation satellite systems (GNSS), which include GPS, are traditionally used for positioning, timing, and mapping ...

Global Navigation Satellite Systems (GNSS) have revolutionised location-based services by providing positioning information through satellite signals. In urban environments, however, positioning ...

The seventh-ever mission of Japan's H3 rocket did not go according to plan. The H3 launched from Tanegashima Space Center on Sunday (Dec. 21) at 8:51 p.m. EST (0151 GMT and 10:51 a.m. local Japan time ...

Atomic clocks are key for satellites being able to provide positioning data that is used for applications such as navigation ...