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What are the uses of the satellite and how does it transmit information to earth?

2007-11-16 17:42:19 · 8 answers · asked by . 3 in Science & Mathematics Astronomy & Space

8 answers

satellites receive and transmit microwaves.

There are three basic categories of non-military satellite services: [5]

[edit] Fixed Satellite Service

Fixed satellite services handle hundreds of millions of voice, data, and video transmission tasks across all continents between fixed points on the earth's surface

[edit] Mobile Satellite Systems

Mobile satellite systems help connect remote regions, vehicles, ships and aircraft to other parts of the world and/or other mobile or stationary communications units, in addition to serving as navigation systems

[edit] Scientific Research Satellite (commercial and noncommercial)

Scientific research satellites provide us with meteorological information, land survey data (e.g., remote sensing), and other different scientific research applications such as earth science, marine science, and atmospheric research.

Types
MILSTAR: A communication satellite

* Anti-satellite weapons, sometimes called "Killer satellites" are satellites designed to destroy "enemy" satellites, other orbital weapons and targets. Some are armed with kinetic rounds, while others use energy and/or particle weapons to destroy satellites, ICBMs, MIRVs. Both the U.S. and the USSR had these satellites. Links discussing "Killer satellites", ASATS (Anti-Satellite satellite) include USSR Tests ASAT weapon and ASAT Test. See also IMINT
* Astronomical satellites are satellites used for observation of distant planets, galaxies, and other outer space objects.
* Biosatellites are satellites designed to carry living organisms, generally for scientific experimentation.
* Communications satellites are satellites stationed in space for the purpose of telecommunications. Modern communications satellites typically use geosynchronous orbits, Molniya orbits or Low Earth orbits.
* Miniaturized satellites are satellites of unusually low weights and small sizes. New classifications are used to categorize these satellites: minisatellite (500–200 kg), microsatellite (below 200 kg), nanosatellite (below 10 kg).
* Navigational satellites are satellites which use radio time signals transmitted to enable mobile receivers on the ground to determine their exact location. The relatively clear line of sight between the satellites and receivers on the ground, combined with ever-improving electronics, allows satellite navigation systems to measure location to accuracies on the order of a few meters in real time.
* Reconnaissance satellites are Earth observation satellite or communications satellite deployed for military or intelligence applications. Little is known about the full power of these satellites, as governments who operate them usually keep information pertaining to their reconnaissance satellites classified.
* Earth observation satellites are satellites intended for non-military uses such as environmental monitoring, meteorology, map making etc. (See especially Earth Observing System.)
* Space stations are man-made structures that are designed for human beings to live on in outer space. A space station is distinguished from other manned spacecraft by its lack of major propulsion or landing facilities — instead, other vehicles are used as transport to and from the station. Space stations are designed for medium-term living in orbit, for periods of weeks, months, or even years.
* Weather satellites are satellites that primarily are used to monitor Earth's weather and climate.

2007-11-16 17:55:50 · answer #1 · answered by Brad456 5 · 0 0

Satellites can be classified by their function since they are launched into space to do a specific job. The type of satellite that is launched to monitor cloud patterns for a weather station will be different than a satellite launched to send television signals across Canada. The satellite must be designed specifically to fulfill its role.
Below are the names of nine different types of satellites. There are also nine pictures of satellites. Each picture is an example of one type of satellite. You can click either on the picture or on the name to learn more about that type of satellite, and its example.
Astronomy Satellites
An astronomy satellite is basically a really big telescope floating in space. Because it is in orbit above the Earth, the satellite's vision is not clouded by the gases that make up the Earth's atmosphere, and its infrared imaging equipment is not confused by the heat of the Earth.
Atmospheric Studies Satellites
Atmospheric studies satellites were some of the very first satellites launched into space. They generally have pretty low Earth orbits so that they can study the Earth's atmosphere.
Communications Satellites
It is difficult to go through a day without using a communications satellite at least once. Do you know when you used a communications satellite today? Did you watch T.V.? Did you make a long distance phone call, use a cellular phone, a fax machine, a pager, or even listen to the radio? Well, if you did, you probably used a communications satellite, either directly or indirectly.

Navigation SatellitesSatellites for navigation were developed in the late 1950's as a direct result of ships needing to know exactly where they were at any given time. In the middle of the ocean or out of sight of land, you can't find out your position accurately just by looking out the window.
Since the satellite was emitting a signal, scientists were able to show that the doppler curve described the orbit of the satellite.
Reconnaissance Satellites
These days, you hear a lot about satellites for communications and scientific research. Some satellites, though, have far less public uses. Reconnaissance satellites are used to spy on other countries. They provide intelligence information on the military activities of foreign countries. These satellites can even detect missile launches or nuclear explosions in space. Reconnaissance satellites can pick up and record radio and radar transmissions while passing over a country. Finally, they can be used as an orbital weapon by placing warheads on a low orbit satellite to be launched at a ground target. (This is not a recommended or frequent use of satellites.)
Remote Sensing Satellites
Remote sensing is observing and measuring our environment from a distance. So, remote sensing satellites are usually put into space to monitor resources important for humans. For example, remote sensing satellites might track animal migration, locate mineral deposits, watch agricultural crops for weather damage, or see how fast the forests are being cut down.
Search Recuse Satellites
Sure satellites can transmit radio and television signals, but can they save lives too? Of course they can! Search and rescue satellites are designed to provide a way for vessels at sea and in the air to communicate from remote areas. These satellites can detect and locate emergency beacons carried by ships, aircrafts, or individuals in remote or dangerous places.
Space Exploration Satellites
Space exploration satellites are not really satellites at all; they are properly known as space probes. A satellite is defined as something that's orbiting something else, but space probes instead travel deep into the solar system. However, they are similar to orbiting satellites in design and function.
Space exploration satellites must be built to last because it takes so long for the satellites to reach their destinations. Space exploration satellites are different from astronomy satellites because they do not operate from Earth orbit; they are actually sent out into deep space on their own.

Weather Satellites

Because of weather satellite technology and communications satellite technology, you can find out the weather anywhere in the world any time of the day. There are television stations that carry weather information all day long. Meteorologists use weather satellites for many things, and they rely on images from satellites. Here are a few examples of those uses:

Radiation measurements from the earth's surface and atmosphere give information on amounts of heat and energy being released from the Earth and the Earth's atmosphere.

https://www.electrikals.com/

2016-02-22 16:57:45 · answer #2 · answered by shaun 4 · 0 0

1. Phone communications
2. GPS positioning
3. XM radio
4. Television
5. Broadband Internet
6. Spy satellites
7. Weather satellites
8 Climate research
9 Mapping
10 Space telescopes
11 Radio telescopes
12 Solar monitoring

They all communicate with earth via radio waves using large dish antennas except for XM radio, GPS and DirecTV.

2007-11-16 17:54:38 · answer #3 · answered by Michael da Man 6 · 1 0

Well we use satellites for navigation, communications, surveying, as platforms for astronomical instruments outside the atmosphere, research in 0 gravity. They communicate back to us via radio frequency

2007-11-16 17:52:42 · answer #4 · answered by G.T. Hildebrand 5 · 0 0

to transit information from 1 geographical end to another and is used mainly as a source of communication and transmitting information as it is reliable and is 1 of the fastest means of sending information. it is also used for predicting atmospheric changes and keeps us aware by giving regular updates of atmospheric changes.

2007-11-16 17:55:31 · answer #5 · answered by Anonymous · 0 0

to map the world for military uses- by whom u know !

2007-11-16 18:06:54 · answer #6 · answered by Anonymous · 0 0

to watch people.
unfortunately for me it's both a blessing and a curse.,

2007-11-16 17:49:59 · answer #7 · answered by darcyaf1 3 · 0 0

To monitor your watching of porn...It is so you can't do anything seedy...

2007-11-16 17:53:33 · answer #8 · answered by xxx 3 · 0 1

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