On June 19 message, come from university of Tokyo of Chinese Beijing University, Japan, England Du Lun university, Italy blocks Daniya the international of college and the orgnaization such as NEC of university, Japan combines a group to announced successful research and development to go out recentlyThe world uses the MuPS of subterranean navigation system of μ particle first times. Relevant research achievement already the United States that print hair published recently " IScience " on the magazine.

Group of research and development of ▲ graph source

Study group introduction, μ particle is a kind of basic particle, cosmic ray accepts the high-energy event in aerospace (if supernova explodes) μ particle can arise when the influence produces reaction with earthly atmosphere quickly. This particle is had very strong osmotic, can cross artificiality body with velocity of light almost in vacuum.

The MuPS that announces this is μ particle is used at subterranean space navigation (positional information is explored) , replace the GPS that cannot arrive at underground because of radio wave and cannot use. MuPS decides through using the μ particle of OK and penetrable soil and subterranean structure the user cuts the position really.

This system is comprised by earth station and user terminal, Although at present precision returns the goal that did not achieve 1m, but had realized the precision with higher fixed position of onlier than GPS place inside the urban district.

Besides subterranean space, this technology still can be used at identifying indoor with marine position, predicting future can install his the robot in own shift go up.