Navigation technology without GPS

Nowadays, wireless technology is a very important part of our lives. Mobile phones, radios, WiFi, navigator, etc. are applied to wireless technology. One of the most prominent examples of such widely used wireless technologies is GPS.

Now GPS has been widely used, we went to an unfamiliar place, the first use is the GPS navigation, so you can easily find the destination, Making travel route planning will also use GPS navigation.There is no doubt that GPS navigation and our lives are inseparable. This may be the main reason why GPS signal blockers are considered illegal. They are dangerous because they may destroy important communications.

However, if one day GPS can not be used, or GPS can be improper used, such as illegal tracking. It is well known that putting all the eggs in a basket is very dangerous, so there are some alternatives to the GPS navigation system. They are GLONASS, unit tower triangulation and Wi-Fi navigation. GLONASS is very clear to the public, it is like a similar GPS in Russia, and unit tower triangulation and Wi-Fi navigation may need to explain.

We started from Wi-Fi navigation. The system is under development, but the first step is made by Google. Google has collected information about thousands of Wi-Fi hotspots in the Street View project, which can be used for navigation. As long as the physical location of these wireless hotspots is fixed, the position between at least three locations can be calculated. Use the signal strength to calculate the distance of each hot spot, the closer the hot spot, the stronger the signal. The future may be widely used. But it also has two shortcomings: compared with the GPS, its results are not accurate.And it can only be used in densely populated areas where there are a large number of Wi-Fi hotspots. It is hoped that the accuracy of this technology will grow as the number of Wi-Fi networks grows.

The second technology is the mobile phone base station triangulation, which is more convenient because it uses your own phone to track your location. You may know that your phone is connected to at least 2-3 base stations. Their coordinates are known and fixed. And your location is calculated between the three unit towers. The benefits of this technique are: it can be used universally, because almost everyone has a cell phone that can be found by phone signals, even indoors.

Here you can see some tracking technology without GPS signal, but it also means that there are many ways to track people. In this case, it is advisable to use a common multi-frequency jammer when you are not sure how others track you.