DARPA is developing a six-axis inertial navigation chip that can be used for military GPS backup

Before satellites, the most reliable way to get from point A to point B without radio signals was to use an inertial guidance system. But these are very bulky and are generally only used by civilians or military personnel with professional knowledge. To this day, inertial guidance systems are still the best backup for GPS, but is there any way to make them more portable? DARPA and the University of Michigan are working in this direction.

Their goal is to create an inertial navigation chip equipped with a high-precision master clock, a three-axis gyroscope and three accelerometers. It consists of three panels with the width of a hair, which can achieve precise navigation. At present, this product is still in the experimental stage. If it can be put into production and used, it should be of great help to soldiers (for example, when GPS is affected or in tunnels) and even ordinary people.