Japan is bringing GPS satellite accuracy to the next level

The fact that modern GPS satellites are accurate to within about 11-12 feet is already really impressive, but that margin of error is still wide enough to occasionally cause problems in dense urban areas, which is why Mitsubishi Electric wants to take satellite accuracy to the next level. The Tokyo-based company is working on something called the Quasi-Zenith Satellite system (QZSS), which it claims will be able to bring that margin of error from a few feet, to a few centimeters.