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Infrastructure

Satellites


2009 – Satellite Overview

Satellites provide a perspective of the Earth that cannot be matched by ground-based technology. In the early days of the Space Age, satellites served little purpose beyond demonstrating that they…

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2010 – Satellite Orbits

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…

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2010 – Satellite Overview

Most modern satellites are specialized machines designed typically to serve a single specific mission, such as communications, remote sensing, scientific observation, or navigation. While the general trend over the past…

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2011 – Satellite Orbits

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 minimizing signal delay…

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2011 – Satellite Overview

Telecommunications technology has made the world a much more intimate place. This is in no small part due to satellites circling the globe providing communications, scientific research, broadcasting, navigation, imagery,…

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2012 – Satellite Overview

In 2012, ## satellites were successfully launched on behalf of ## different countries and international organizations. There were ## active satellites in orbit at the end of 2012, according to…

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2013 – Satellite Overview

In 2013, ## satellites were successfully launched on behalf of ## different countries. Of these, ## were “microsatellites,” with a mass of less than 91 kilograms (200 pounds). These satellites…

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Ground Networks

Ground stations serve as the links between Earth and space, tying together terrestrial and space infrastructure. They track satellites and spacecraft, as well as communicate with and control satellites, probes,…

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