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2. Satellite laser ranging - Wikipedia

   en.wikipedia.org/wiki/Satellite_laser_ranging

   Satellite laser ranging (SLR) is a method to measure the distance to satellites in a geocentric orbit. It consists of an astronomical observatory equipped with a laser that sends ultrashort pulses of light. The pulses hit the satellite and bounce back to be caught by the station, which measure the round trip time with the speed of light formula ...

3. Long-range optical wireless communication - Wikipedia

   en.wikipedia.org/wiki/Long-range_optical...

   Long-range optical wireless communication or free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking over long distances. "Free space" means air, outer space, vacuum, or something similar.

4. Laser communication in space - Wikipedia

   en.wikipedia.org/wiki/Laser_communication_in_space

   Assuming available laser technology, and considering the divergence of the interferometric signals, the range for satellite-to-satellite communications has been estimated to be approximately 2,000 km (1,200 mi). [83] These estimates are applicable to an array of satellites orbiting the Earth.

5. SpaceX to sell satellite laser links that speed in-space ...

   www.aol.com/news/spacex-says-plans-sell...

   SpaceX's thousands of Starlink satellites in low-Earth orbit use inter-satellite laser links to pass data between one another in space at the speed of light, allowing the network to offer broader ...

6. Optical wireless communications - Wikipedia

   en.wikipedia.org/wiki/Optical_Wireless...

   VLC can be possibly used in a wide range of applications including wireless local area networks, wireless personal area networks and vehicular networks, among others. [1] On the other hand, terrestrial point-to-point OWC systems, also known as the free space optical (FSO) systems, [2] operate at the near IR frequencies (750–1600 nm).

7. LAGEOS - Wikipedia

   en.wikipedia.org/wiki/LAGEOS

   LAGEOS (/ l eɪ ʒ iː oʊ s /), Laser Geodynamics Satellite or Laser Geometric Environmental Observation Survey, are a series of two scientific research satellites designed to provide an orbiting laser ranging benchmark for geodynamical studies of the Earth. Each satellite is a high-density passive laser reflector in a very stable medium Earth ...