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Infrastructure

Satellites


2008 – Ground Networks

Launch vehicles, spacecraft, and other space platforms receive operational, logistical, and navigational instructions from ground stations. Individual ground stations are usually spread across a wide geographic, and sometimes international, expanse…

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2009 – Ground Networks

Ground stations are an essential but often overlooked segment of space infrastructure. Ground stations connect satellites to terrestrial networks and collect satellite information ranging from tracking and telemetry to imagery…

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2012 – Ground Networks

Satellite teleports are permanent ground-based satellite uplink facilities. Teleports consist of several satellite dishes sited near a major terrestrial communications backbone, and they serve as the link between terrestrial communications…

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2010 – Ground Networks

An essential element of space infrastructure, ground stations transmit commands to and receive data from spacecraft. They also often contain facilities to process that data, particularly in the case of…

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2011 – Ground Networks

Earth observation satellites produce the largest amounts of data to be transmitted to Earth on a regular basis and thus require dedicated data processing ground stations. While all satellites require…

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2013 – Satellite Orbits

There were ## active satellites in orbit at the end of 2013, all performing various missions depending on their configuration and orbit. Of all active satellites, ## (approximately ##% of…

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2005 – Satellite Orbits

As geostationary (GSO) satellites remain in an essentially fixed position relative to the ground at all times, they can communicate with fixed ground stations continually. Medium Earth orbit (MEO) and…

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2005 – Satellite Overview

Satellites in use have four basic applications: communications, remote sensing, navigation, positioning and timing, and scientific experimentation (generally using a suite of sensors with variations of some or all of…

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2008 – Satellite Overview

Satellites, whether for communications or remote sensing, provide a perspective or coverage of Earth that cannot be matched by terrestrial technology. Satellites can perform a variety of missions supporting commercial…

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2014 – Satellite Orbits

According to the Union of Concerned Scientists, a total of ## satellites were active at the end of 2014. These satellites are mostly located in low Earth orbit (LEO) between 200 and…

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