What do Earth observation satellites do?

Earth Observation (EO) satellites help us to monitor and protect our environment, manage our resources, respond to global humanitarian disasters and enable sustainable development. They provide essential information on a vast number of areas, including; ocean salinity, ice thickness, crop health, and air quality.

What is the difference between communication satellite and other satellites orbiting the Earth?

Satellites can be classified by their function since they are launched into space to do a specific job. Communications satellites are artificial satellites that relay receive signals from an earth station and then retransmit the signal to other earth stations. They commonly move in a geostationary orbit.

What is Earth observation data?

Earth observation is the gathering of information about planet Earth’s physical, chemical and biological systems via remote sensing technologies, usually involving satellites carrying imaging devices. Earth observation is used to monitor and assess the status of, and changes in, the natural and manmade environment.

What is satellite explain?

A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Usually, the word “satellite” refers to a machine that is launched into space and moves around Earth or another body in space. Earth and the moon are examples of natural satellites.

How are satellites used in mapping?

Mapping. The surface of the ocean bulges outward and inward, mimicking the topography of the ocean floor. The bumps, too small to be seen, can be measured by a radar altimeter aboard a satellite. Satellite imagery may also be used to map features in the water, such as coral reefs.

What is the Earth satellite?

Earth satellite, also called artificial satellite, artificial object launched into a temporary or permanent orbit around Earth. Spacecraft of this type may be either crewed or uncrewed, the latter being the most common.

What is the difference between earth observation and remote sensing?

Remote sensing is observing objects from platforms that are distant from the object being observed. On the other hand, Earth observation gathers information on the physical, chemical, biological, and any other related data about the planet. …

Which satellite program is used for earth observation?

The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey. On July 23, 1972, in cooperation with NASA, the Earth Resources Technology Satellite (ERTS-1) was launched.