satellite remote sensing![click to hear](/images/speaker.jpg)
Observation of the Earth’s surface and atmosphere by a satellite equipped with a sensor.
active sensor ![click to hear](/images/speaker.jpg)
Instrument that itself emits the energy required to illuminate the target and receives the waves it reflects.
data recording ![click to hear](/images/speaker.jpg)
If the satellite in unable to communicate with the terrestrial station, data is registered onboard and transmitted later.
passive sensor ![click to hear](/images/speaker.jpg)
Instrument that receives the waves produced when the target reflects the Sun’s natural rays.
energy source ![click to hear](/images/speaker.jpg)
At the origin of the remote sensing process is an energy source, for example the Sun, used to illuminate the target.
natural radiation ![click to hear](/images/speaker.jpg)
When the sky is clear, the satellite captures the reflection of the Sun’s rays from the Earth’s surface.
target ![click to hear](/images/speaker.jpg)
Surface or object that reflects the Sun’s rays.
data processing ![click to hear](/images/speaker.jpg)
Raw data is interpreted and analyzed to extract information about the target.
target ![click to hear](/images/speaker.jpg)
Surface or object that reflects the Sun’s rays.
data reception ![click to hear](/images/speaker.jpg)
Raw data reaches the terrestrial station in digital form.
data recording ![click to hear](/images/speaker.jpg)
If the satellite in unable to communicate with the terrestrial station, data is registered onboard and transmitted later.
reflection ![click to hear](/images/speaker.jpg)
Phenomenon by which natural or artificial waves bounce off the target and toward the satellite.
artificial radiation ![click to hear](/images/speaker.jpg)
When atmospheric conditions hide the Sun’s rays, the active sensor itself emits radiation waves.
data transmission ![click to hear](/images/speaker.jpg)
The sensor transmits raw data, if possible immediately, to a terrestrial station for processing.