A new study reveals advanced methods for improving orbit determination (OD) of large constellations of Low Earth Orbit (LEO) satellites, utilizing ...

The satellite navigation system known as TRANET, and the series of TRANTET satellites, use the Doppler system. The Doppler data have been successfully used for almost a decade in orbit analysis ...

Geostationary satellites take 24 hours to orbit the Earth, so the satellite appears to remain in the same part of the sky when viewed from the ground. These orbits are much higher than polar ...

Polar orbits are often used for earth-mapping, as well as for some weather satellites. Geostationary satellites take 24 hours to orbit the Earth, so the satellite appears to remain in the same ...

The BR-03 Astro introduces a unique captive orbital system: Mars indicates the hours, the Moon tracks the minutes, and a ...

A takes off for its maiden flight from Wenchang Space Launch Site in Southern China's Hainan Province on February 11, 2025. Photo: VCG. On Tuesday, after a thu ...