The new technology can replace the GPS. The new quantum photonic chips that act based on Weak Value Amplification (WVA) technology can replace GPS. The problem with the GPS is that it sometimes loses its contact with satellites in tunnels and cases where it's jammed. If a drone operates over open ground-area. It can use DSMAC (Digital Scene-Matching Area Correlation). In that case, there is a satellite or aerial image of the route that the drone should follow on its computer. Then the system compiles those images with images, that the CCD camera takes. And if images match the drone is on the right route. In some cases the DSMAC uses Lidar but the problem is that especially in war zone things like houses can be destroyed and the land area might be turned different than it just were because of the use of fire. In cases where a drone must go to caves, it must use some other navigation tools than just GPS. The systems that replace the GPS must also be in cases where drones research