Early GPS equipment
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Early GPS equipment
Early GPS equipment. This equipment was among the first to use the Global Positioning System (GPS) that started in 1978. This equipment was built by Prakla-Seismos. GPS is a system of satellites in Earth orbit that broadcast signals. These allow ground-based equipment, like the one seen here, to calculate its position, elevation and the precise time. Modern GPS receivers are now small enough to be carried by hand. The GPS satellites must carry extremely accurate clocks, and need to take into account relativistic effects. The speeds of the orbiting satellites, relative to the Earth, cause a small but measurable slowing of time, as predicted by Einsteins Special Relativity theory
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6429731
© VOLKER STEGER/SCIENCE PHOTO LIBRARY
1900s 1970s 1980s Communications Computer Computing Device Early Global Positioning System Instrument Wire Wires
EDITORS COMMENTS
This print showcases early GPS equipment, a significant milestone in the development of navigation technology. Manufactured by Prakla-Seismos, this pioneering device was among the first to utilize the Global Positioning System (GPS) that commenced its operations in 1978. The system relies on a network of satellites orbiting Earth, transmitting signals that enable ground-based equipment like the one depicted here to accurately determine its position, elevation, and even the precise time. During this era captured in the image, GPS receivers were considerably larger and bulkier compared to their modern counterparts which can now be conveniently carried by hand. However, what remains constant is the indispensable need for these satellites to carry incredibly accurate clocks while accounting for relativistic effects. Due to their high speeds relative to Earth's rotation, these orbiting satellites experience a slight but measurable slowing of time as predicted by Einstein's Special Relativity theory. The intricate web of wires seen connecting various components within this early GPS instrument highlights both its complexity and technological sophistication for its time. This photograph serves as a testament to human ingenuity and scientific progress during the late 20th century when groundbreaking advancements such as GPS revolutionized communication and navigation systems worldwide.
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