It appears that this is using coincidence detection to locate objects, surface boundaries, etc. relative to a fixed array of sensors. In order to use this as a

It appears that this is using coincidence detection to locate objects, surface boundaries, etc. relative to a fixed array of sensors. In order to use this as an underwater location sensor, you'd have to have some communications channel that could time the arrival of muons and correlate them with detections at known fixed locations. I fail to see how this would provide global position. The referenced paper[1] does not address clock distribution, nor the distribution of detection data for correlation into position information. Unless the researchers have a reliable, atomically timed source of cosmic ray pulses that can be known a-priori, I fail to see how this could be used to determine global location, except post facto, when all data could be correlated, and the previous locations determined. Thus, I fail to see this as a viable candidate for replacing the global positioning system, at this time. [1] https://www.sciencedirect.com/science/article/pii/S2589004223010775?via%3Dihub https://www.sciencedirect.com/science/article/pii/S258900422...