The monograph proposes new contemporary innovative solutions for an integrated mobile system for monitoring and protecting critical infrastructure (CI) with elements of artificial intelligence in an Internet environment based on a mobile communication and information system for collecting, aggregating, processing, and presenting in real time streams of information objects. Based on an analysis of the current state and development trends of unmanned aerial vehicles (UAVs) for various applications, as well as the relevant methods and technical means for counteracting them, the composition and main tactical and technical characteristics of a sensor system for detecting, tracking, and blocking drones are justified. The topics covered in the monograph are aimed at fulfilling Task 1.1.6 and Task 3.1.7 of the National Scientific Program "Security and Defense" (RMS No. 731/21.10.2021) of the Ministry of Education and Sci