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Advantages of Globalstar
Space Segment
Ground Segment
User Segment

Space Segment

The Globalstar space segment is based on a low earth orbiting satellite constellation. This constellation consists of 48 LEO (Low Earth Orbiting) satellites, with an additional four satellites in orbit as spares.

Owing to the low earth orbit of the Globalstar system satellites, signal delay and distortion is minimized. The Globalstar satellite system has been designed such that it does not require complicated and large user terminals. This allows the user to enjoy a portable user terminal not much larger than a cellular phone.

The Globalstar satellite is simple; Each consists of an antenna, a trapezoidal body, two solar arrays and a magnetometer, and operates at an altitude of 1,414km (876 miles). The satellites are placed in eight orbital planes of six satellites each, inclined at 52 degrees to provide service on Earth from 70 degrees North latitude to 70 degrees South latitude all around the world.

Number of satellites in the constellation 48
Number of orbits 8
Orbit elevation km 1410
Inclination 52°
Number of satellites per orbital plane 6
Number of satellites simultaneously covering the territory of Russia - no less than 4
Weight of satellite kg < 450
Life span 10 years

The design of Globalstar's orbital planes keeps two to four satellites overhead at all times from any point of the earth's surface, other than the poles.

CDMA (Code Division Multiple Access) technology, which permits dynamic selection of strongest signal available from all satellites in view, is a technique we refer to as path diversity, resulting in superior call clarity and a low incidence of dropped calls: as the satellites and the user change positions, satellites are added and dropped seamlessly from the call.

Satellite of Globalstar

The Globalstar satellite constellation was launched using the Delta-II rocket boosters (USA) and the Souyz-Ikar rocket boosters (Russia). Launches were carried out from the Kennedy Space Center in Florida, and the Baikonour Cosmodrome in Kazakhstan.

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