

University of Tokyo Muographics: Professor Hiroyuki
Tanaka Muons can see deep into volcanoes, see through pyramids, and observe cyclones.
Muons are constantly descending at 10,000 per square meter per minute.
Cosmic ray muons always move at the same speed regardless of the matter they pass through.

Muometric Positioning System (muPS):
This works underground, indoors and even underwater.
On the ground he used four muon detection reference stations to calculate the coordinates of the underground muon detection receiver.
In the latest research, a high-precision quartz clock synchronized the ground station and the receiver.
Uses high-precision quartz watches:
The coordinates of the receiver are determined by the synchronous clock used for muon time-of-flight measurement.
The new system is called the Mumetric Wireless Navigation System (MuWNS).
https://www.u-tokyo.ac.jp/focus/en/press/z0508_00291.html

Radio Muometric Navigation System (MuWNS):
MuWNS enables indoor and underground navigation.
The accuracy of the prototype MuWNS surpassed GPS single-point positioning.
https://www.sciencedirect.com/science/article/pii/S2589004223010775