Study of Radio Wave Propagation Indoors for the Purpose of Locating the Moving Objects

The task before the developers was to create a geolocation system using Russian manufacturer equipment, so that the error in location determination would not exceed 5 meters. To implement a local positioning system, the pilot area for conducting experiments was defined, a Wi-Fi test network was designed and built in the course of the work on the project. The signal strength level at the input of the receiving device was chosen as a physical parameter, the measurement of which is necessary to calculate the target object’s coordinates. A combined location determitation algorithm based on the mechanisms of nearest access point, spatial pattern differentiation and trilateration was developed. More than a thousand measurements were carried out in the test network, and during that the main problems of the location system were identified and ways to overcome them were proposed