geostationary satellite

A satellite that travels in a geostationary orbit, allowing it to observe a considerable area of the Earth’s surface on a continuous basis.

trim tab

Adjustable mechanical component that makes it possible to modify the satellite’s position.

solar array

Power supply device that converts solar energy into immediately usable electrical energy.

magnetometer

Instrument designed to measure the Earth’s magnetic field.

UHF antenna

Antenna that provides a radio link with terrestrial stations.

imager

Radiometer that generates images of clouds and of the surface of the Earth and the oceans.

sounder

Radiometer designed to measure temperature and humidity at different altitudes in the atmosphere.

telemetry and command antenna

It allows terrestrial stations to monitor satellite operations and transmit commands to the satellite.

S-band high gain antenna

Main antenna pointed toward the Earth to transmit large quantities of scientific data.

Earth sensor

Instrument that locates the Earth’s horizon so that the antenna can be positioned correctly.