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DateDate: 5-11-2018, 05:57

Scientists at the US Naval Academy believe that GPS is unstable and that people who depend on it need an effective alternative. In the center of the new system is an artificial diamond with a rare anomaly.
GPS positioning is not as reliable as it is thought, reminds edition Wired. For example, a truck driver in the United States was fined $ 32,000 for using a device that interferes with GPS. It happened when a trucker accidentally interfered with the navigation system of the airport in New Jersey. In another case, the researchers managed to gain control over the navigation module of the yacht, which was located in the Mediterranean.
Therefore, scientists were looking for an invulnerable alternative to the global positioning system - and received help from the US Naval Academy.
The military needed an independent alternative - and it was found in the old system, based on an artificial diamond with a rare defect.
62e9de03-5340-4270-9489-03a54f2ce3b3.jpeg (93 KB)
Together with his team, engineer Michael DiMario last five years working on a prototype. The device is a cylinder of 30 by 15 centimeters. In the center of the installation is an artificial diamond cube, which is barely larger than a salt crystal. Diamond contains a defect known as a nitrogen-substituted vacancy in a diamond or NV-center.
The presence of these defects turns a diamond into an ideal and super-precise magnetic detector. It happens like this. When a diamond is illuminated with a green laser, a vacancy emits a red light. According to the provisions of quantum mechanics, depending on the magnetic field in which the diamond is located, the intensity of red light fluctuates. By measuring this, you can record the smallest signs of a magnetic field. Such high-precision instruments are also called SQUID magnetometers.
High precision determination of the magnetic field and is used for navigation. DiMario says that their magnetometer is able to record and determine the directions of the fields formed by all known magnetic anomalies.
Since the coordinates of these anomalies are fixed long and accurately, the device simply determines its own position relative to them. Such a quantum navigator will not be able to crack.
Source: hightech.plus