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2010 - Satellite Orbits

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The closer proximity to the Earth also greatly reduces signal delay from a LEO satellite to ground stations and allows for smaller receivers on the ground. While these attributes are beneficial, these lower orbits are challenging in that these satellites constantly move in and out of view of individual ground receivers. If it is necessary to maintain a continuous link, a fleet of spacecraft is required to form what is called a satellite constellation. LEO is home to communications constellations belonging to mobile satellite services companies such as Iridium and Globalstar.


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