Monitoring of different natural and technological objects is essential in the modern world to ensure a safe and comfortable people’s lifestyle; it helps to understand how the planet and its climate change, what role is played by anthropogenic and technological factors in these changes. Different methods and decision-making models are used in the monitoring and control of natural and technological objects; this paper provides an overview of the commonly used models of ground-space monitoring of natural and technological objects, which have been analysed in the framework of the project INFROM.