Globalstar is a low-earth orbit (LEO) satellite-based telecommunications system founded by U.S.-based Loral Corporation and Qualcomm Inc. It provides high-quality satellite voice and data services across North America and to over 120 countries worldwide.
"Four Globalstar satellites... have been transferred to a final assembly room," the Federal Space Agency said in a statement. "The assembly of a dispenser with a booster has been scheduled for May 18."
The agency earlier said the launch of a Soyuz-FG carrier rocket from the Baikonur space center would be conducted on May 20.
Commercial launches of Soyuz carrier rockets are managed by Starsem, a European-Russian joint venture, which comprises EADS SPACE, Arianespace, the Russian Federal Space Agency, and the Samara-based Progress design and production center.
Created in 1996, Starsem offers Soyuz rockets for a broad range of mission needs, including satellite telecommunications systems, scientific spacecraft, and Earth observation meteorological platforms.
The current Globalstar orbital constellation comprises 48 LEO satellites, with an additional four satellites in orbit as spares.
Each Globalstar satellite consists of an antenna, a trapezoidal body, two solar arrays and a magnetometer, and operates at an altitude of 1,414km (876 miles). The service life of a Globalstar satellite is over seven years.
