Abstract: Using reflected signals from Global Navigation Satellite Systems (GNSS ... In this paper, we obtain the ACFs of GPS IIR-M/IIF/III L1, Galileo E1, and BeiDou-3 B1 signals by processing the ...

The fleet of Lockheed Martin-built GPS IIR and IIR-M satellites makes up the majority of the operational GPS constellation. The satellites have exceeded 140 cumulative operational years on-orbit with ...

The seventh GPS III satellite from Lockheed Martin, the GPS III SX07, was placed into orbit at the end of 2024.

A reliable terrestrial complement and backup to GPS is one critical solution to help meet the national security, economic and ...

The Indian Space Research Organisation (ISRO) has encountered a significant setback with its recently launched NVS-02 navigation satellite. Launched on Jan. 28, 2025, the satellite is currently ...

GPS technology relies on satellite infrastructure and supports everything from ride-share and food delivery apps for civilians to critical navigation for military and defense operations.

These satellites will augment the 31-satellite GPS constellation currently in orbit, with the goal of ensuring global navigation coverage amid concerns about potential threats to space assets from ...

The Yunyao-1 satellites feature GNSS occultation (GNSS-RO) payloads which discern weather data by detecting changes in signals from GPS and Beidou satellites as they pass through the atmosphere.

Alternate mission strategies for utilising the satellite for navigation in an elliptical orbit is being worked out,” the ISRO said in a statement. NavIC, or Navigation with Indian Constellation, is ...