Method for determining the navigation field distortion and the identification of interference on the RUAV receiver

The scientific problem under consideration is associated with the problem of monitoring the integrity of the navigation field and ensuring the accuracy of positioning of robotic unmanned aerial vehicles under conditions of natural distortion of the navigation field and deliberate interference. The aim of the article is to develop a method that can reliably determine the fact of distortion of the navigation field and identify interference effects through the use of additional information obtained during the processing of navigation parameters in the navigation receiver. In order to identify the status of the GPS / GLONASS navigation field, the introduction of typical classes is proposed. The research uses a comparative assessment of the current results of navigational measurements with calculated values obtained by extrapolating a certain area with reliable measurements and a Bayesian probabilistic approach to solve the problem of detecting the fact of distortion of the navigation field and identifying the interference effect. The developed method allows to assess the state of the navigation field with high reliability and, when it is distorted, to identify the type of interference. The results are recommended to be used to improve the control algorithm of the unmanned aerial vehicles with the aim of expanding its functional capabilities in stand-alone operation under conditions of intentional and natural interference.