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receiving stations
Geographers rely on satellites to gather data because it is the easiest method. In the past, they would have had to traverse the earth to map all of it.
They are called maps
Satellite systems can be used to transmit audio data
Mars has two natural satellites. Earth has one.
A GPS receiver gets its signal from a network of orbiting satellites that transmit location and timing data. The receiver uses this information to calculate its own position on Earth by triangulating the signals from multiple satellites.
Data is sent to earth from satellites using TIROS. This is data given from the ground.
Curiosity communicates with Earth through a series of relay satellites called the Mars Reconnaissance Orbiter, MAVEN, and TGO. These satellites receive data from the rover and then transmit it back to Earth using radio waves. This communication allows scientists and engineers to receive data and commands from Earth to control and analyze the rover's activities on Mars.
All satellites orbit the Earth, whether they are used for communication, navigation, weather observation, or scientific research. They are designed to transmit or receive signals or data for various purposes while in orbit around the Earth.
An unmanned spaceship can transmit pictures to Earth using onboard cameras that capture images or data, integrated communication systems, and antennas that send signals back to Earth. The spaceship typically communicates with ground stations or satellites in space to relay the pictures or data to Earth.
Artificial satellites are man-made objects that have been launched into space to orbit a planet, usually the Earth. Their roles depend on what they've been built for. The GPS satellites provide positioning information so that GPS receivers on Earth can know where they are. Weather satellites tracks clouds and storms. Communications satellites transmit TV, radio, phone calls and data, and so on.
satellites must transmit all their information to the earth down .satellites transmit information gathered by their sensors during each contact with the ground station. They contact the station using a large dish antennae which is situated on earth, at the site of the ground station. During the contacts between the satellite and ground station the satellites usually transmit information about the state of its various subsystems abd its position in space.
Earth observation satellites collect data about a strip of Earth's surface by taking high-resolution images and capturing various types of data such as vegetation health, land use, and weather patterns. These satellites orbit the Earth and use sensors to collect information about specific regions on the planet.
Usually by radio.
receiving stations
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A communications satellite operates as a transceiver (TRANSmitter - reCEIVER). Signals from a base station on Earth are sent to a satellite receiver. The data is either stored for a period of time or sent immediately to a transmitter on the same satellite. The transmitters on satellites are positioned to transmit towards Earth or towards other satellites. A base station on Earth will receive the transmitted signals and pass them to land based equipment. As satellite signals rely on line of sight, they each have a range over which they can send signals. Too far round the Earth and the signal won't make it. That's why they can also transmit to other satellites before the signal is finally returned to Earth, far round the globe. The data carried by communication satellites is used for a wide variety of applications. Television, telephones, computer networks and far more are regularly sent to and from satellites.