Fjärruppföljning

Fjärruppföljning, known in English as remote sensing, is the science and art of obtaining information about objects or phenomena without making physical contact with them. This is typically achieved by using sensors to detect and measure energy that is reflected or emitted from the object or its surroundings.

The electromagnetic spectrum plays a crucial role in fjärruppföljning, as sensors can be designed to detect different wavelengths, from visible light to infrared and microwave radiation. This allows for the observation of various properties of the Earth's surface, atmosphere, and oceans, including temperature, moisture content, vegetation health, and geological features.

Data from fjärruppföljning is collected from various platforms, including satellites, aircraft, and drones. Satellites provide synoptic views of large areas over time, enabling the monitoring of global environmental changes. Aircraft and drones offer higher spatial resolution and can be used for more localized studies or rapid response missions.

Applications of fjärruppföljning are widespread. It is used in meteorology for weather forecasting, in agriculture for crop monitoring and yield prediction, in geology for resource exploration, in environmental science for tracking deforestation and pollution, and in disaster management for assessing damage and coordinating relief efforts. Advancements in sensor technology and data processing techniques continue to expand the capabilities and applications of fjärruppföljning.