Abstract

Because of the inherent high sensor resolution satellite laser ranging (SLR) has been developed into a widely used range measurement technology, today more than 30 observing stations all across the world are routinely tracking a large variety of satellites in order to determine their orbits with high resolution. Recently this concept was also adopted for high-precision time transfer activities, such as the T2L2 experiment on Jason 2 and the European Laser Time Transfer (ELT) for the International Space Station. With complex targets such as the ISS one has to comply with stringent laser eye safety requirements in order to ensure the health of the astronauts. At the same time laser safety for air traffic has to be secured.

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