A satellite is a spacecraft that orbits the earth. This paper is about several types of satellites. Satellites are quite important in our everyday life. They were initially used in espionage and other military activities as a clandestine devices. As commercialization progressed, they expanded into digital communication sectors that had an influence on our daily lives.
Satellite provides global television transmission, long-distance phone calls, community radio, forecasts, newspaper articles, Ola/Uber taxi-hailing, geo-mapping, automobile tracking, and other services.
Many business models have been created to make use of the possibilities of satellite services. In this post, we’ll examine satellite features and their various variations.
What is a Satellite?
A satellite is a spacecraft that orbits the earth. Solar System consists of the Sun, planets, and moons (Natural satellites). The Sun is only one among billions of stars in the Milky Way Galaxy. One of the billions of galaxies in the cosmos is the Milky Way. Any object in space that orbits another bigger object is referred to as a satellite. The orbit might be circular or elliptical in shape. The bigger thing, which provides them with life, light, heat, and energy, keeps all of the little objects whirling around it in place.
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Planets such as Earth, Jupiter, Uranus, Saturn, Neptune, and Mars are natural satellites that orbit the Sun. The Sun is in control of the whole solar system; it is in the critical position of providing all of the planets’ resources. Moons like Titan, Ganymede, Callisto, Rhea, Miranda, and Moons orbiting Planets are included in this category of natural satellites. In the solar system, there are about 240 moons that orbit Planets, Dwarf Planets, and other solar system entities.
These satellites are built and launched into space with specific missions in mind, such as orbiting Earth or other planets. NASA (USA), JAXA (Japan), ESA (Europe), Roscosmos (Russia), and CSA (Canada) created an international space station between 1998 and 2011, which was visited by 230 astronauts from 18 countries. This space station acts as a research and testing facility for future lunar and Mars missions.
Moons relate to natural satellites, whereas satellites refer to manufactured satellites. For the rest of this post, we’ll concentrate on Artificial satellites.
Types of Satellites
Weather satellites, Satellites that provide weather data Weather satellites may be used by meteorologists to predict the weather or to monitor current conditions. Geostationary Operational Environmental Satellite (GOES) is one of these satellites (GOES). From geostationary or polar orbits, these satellites frequently include cameras that can capture Earth’s weather.
communications satellites, satellite communication Using communications satellites, telephone and data conversations may be transmitted across the air. Popular communications satellites include Telstar and Intelsat.The diode, which is a radio which hears a conversation over one frequency, intensifies it, and rebroadcasts it to Home on another intensity, is the most crucial component of a communications satellite. Tons of transponders make up a satellite.
The most prevalent kind of communication satellite is a geosynchronous one (more on that later).
The term “broadcast satellite” refers to satellites that transmit television signals from one place to another (similar to communications satellites).
Scientific satellites, such as the Hubble Space Telescope, provide a number of functions. From solar activity to gamma rays, they examine everything.
Navigational satellites assist ships and airplanes. The most well-known satellites are GPS NAVSTAR.
Rescue satellites respond to radio distress messages (read this page for details). Earth observation satellites keep track of changes in everything from temperature to forestation to ice sheet coverage. The best-known satellite is Landsat.
Military satellites circle the planet, but the majority of information regarding how they are used is classified. Encrypted communication, nuclear surveillance, enemy tracking, missile launch early warning, eavesdropping on terrestrial radio lines, radar imaging, and photography are only a few examples of conceivable uses (by employing what are effectively huge telescopes to photograph militarily significant locations).
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History of Satellites
Sputnik 1, Russia’s first satellite, was launched in 1957. A total of 8900 satellites were launched by 40 countries as a result of this. Around 5000 remains are in orbit, with 1500 of them active, while the rest have outlived their usefulness and are now space debris. To date, India has launched around 100 satellites.
These satellites are positioned in orbit at varying altitudes and directed toward various planets, depending on their objectives. In low orbit (2000 km), 6 percent are in medium orbit (20000 km), 20% are in geostationary orbit (36000 km), and 2% are in elliptic orbit (> 36000 km).
Uses of a Satellite
Here are a few application examples:
Military Satellites: By definition, a satellite is neither military nor commercial, and its categorization is based on its intended use. The enemy’s space objects are monitored, scanned, and tracked by military satellites. They search the space for hostile things and provide photos and other data to the host country.
Weather forecasting: Earth satellite picture feeds help in the monitoring of global climate conditions, the prediction of severe weather occurrences such as storms, hurricanes, and cyclones, and the effective handling of disasters.
DTH (Direct-to-Home) telecasting and radio: Without a cable box, live TV programs may be accessed through satellite. Transponders receive a broadcaster’s fixed-frequency signal and send it to each of our homes at a different frequency. The same idea applies to radio, with programs broadcasting to any location on the world.
Navigation: Satellites monitor and record the whereabouts of every item on the planet, enabling us to connect autos, workers, and other objects to their owners.
Satellite technology allows for wireless telephone communication with anybody in any area of the world, and it works in all weather conditions.
Satellite connectivity allowed the sector to move at a faster pace. New mobile applications that connect all stakeholders to the company are developed using satellite technology. We hope that this satellite information has provided you with the most comprehensive understanding of satellites.