![]() ![]() ![]() The processing stations on the ground receive the signals from both the sensors and the satellite communication. The sun's radiation reaches the Earth's surface and the reflected radiation is received by the sensors. ![]() The first requirement for remote sensing is to have an energy source to illuminate the target. Sunlight is one type of energy sources in the form of electromagnetic radiation for sensors. Remote means observation is done at a distance without physical contact with the object of interest, and sensing means detection of energy, such as light or another form of electromagnetic energy. Remote sensing can provide important spatial and temporal data for the different layers in a geographic information system, such as the infrastructure maps and landuse maps. Remote sensing is the science and technology of observing an object / phenomenon by instrument based techniques. If you would like to know more about remote sensing, you can consults the ITC textbook on GI Science and Earth Observation. Thus, while in the geo-informatics context satellites often come to mind, even amateur photography is a form of Remote Sensing. EO can be described as the process of making measurements or observations without direct contact with the object being measured or observed. General introduction to the earth observation dataĮarth Observation (EO) data, sometimes also called Remote Sensing (RS) can provide important spatial and temporal information to monitor hazards in space and time such as flooding, landsliding, soil erosion and volcanic eruptions. ![]()
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