Navigating underground with cosmic-ray muons

Science Daily  June 15, 2023
Navigation in indoor and underground environments has been extensively studied to realize automation of home, hospital, office, factory and mining services, and various techniques have been proposed for its implementation. An international team of researchers (Japan, UK, Italy) developed a completely new wireless navigation technique called wireless muometric navigation system (MuWNS) utilizing the relativistic and penetrative nature of cosmic-ray muons. They demonstrated MuWNS by using the system on the basement floor inside a building to navigate (a person) in an area where global navigation satellite system (GNSS)/ global positioning system (GPS) signals could not reach. The resultant navigation accuracy was comparable or better than the positioning accuracy attainable with single-point GNSS/GPS positioning in urban areas. With further improvements in stability of local clocks used for timing they anticipate that MuWNS can be adapted to improve autonomous mobile robot navigation and positioning as well as other underground and underwater practical applications… read more. Open Access TECHNICAL ARTICLE 

Graphical abstract. Credit: iScience, May 29, 2023 

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