What are the uses of artificial earth satellites for earth satellites

An artificial earth satellite is a star that is artificially created and launched to orbit the ball. It is a messenger sent by mankind to space, a spearhead to detect celestial bodies. It has an extremely wide range of uses.

Reconnaissance satellites - used in the military, stealing the military intelligence of the opposing side.

Resource Satellite - for a comprehensive survey of the natural resources of the planet. Meteorological satellites - used to observe and study meteorological conditions in space.

Communication satellites - used for radio, television, ** and other communications, mainly synchronous satellites.

Scientific experiment satellites - used to investigate geological, geographical, oceanographic, spatial phenomena on Earth.

Astronomical observation satellites - used to observe cosmic objects.

Navigation satellites - for navigation.

Geodesic satellites - used for geological surveys, prospecting operations.

Please adopt it with help or a favorable reception.

Artificial satellites can be used for scientific exploration and research, weather forecasting, land resource survey, land use, regional planning, communication, tracking, navigation, etc. An artificial satellite refers to an artificial earth satellite, which is an unmanned spacecraft that orbits the earth and orbits more than one circle.

Artificial satellites are mainly used in various fields such as scientific exploration and research, weather forecasting, land resource survey, land use, regional planning, communication, tracking, and navigation. An artificial earth satellite refers to an unmanned vehicle that orbits the earth and orbits more than one circle. Abbreviated as Sputnik.

Humanitarian satellites are the spacecraft with the largest number of launches, the widest range of applications, and the fastest development.

Classification of the use of artificial earth satellites

Artificial earth satellites can be divided into three categories according to their uses, scientific satellites, technical test satellites, and application satellites.

1. Scientific satellites are satellites used for scientific exploration and research, mainly including space physical exploration satellites and astronomical satellites, which are used to study the upper atmosphere, the earth's radiation belt, the earth's magnetosphere, cosmic rays, solar radiation, etc., and can observe other stars.

2. Application satellites are satellites that directly serve mankind, and they have the largest types and the largest number of hidden services, including: communication satellites, meteorological satellites, reconnaissance satellites, navigation satellites, geodetic satellites, earth resources satellites, interception satellites, etc.

3. Technical test satellites are satellites that conduct new technology tests or test satellites for application satellites. There are many new principles, new materials, and new instruments in aerospace technology, and whether they can be used or not must be tested in the sky and how well a new satellite performs.

It can only be used when it is launched into the sky for actual "exercise" and can only be applied after the test is successful, and animal tests must be carried out before people go to the sky, and these are the missions of the technical test satellite.

Categories: Education Academic Exams >> Gaokao.

Problem description: A college entrance examination question is as follows:

With regard to artificial earth satellites, the following statements are correct: a. The speed of operation may be equal to 8 km s

Is this option correct? The answer is wrong, because the velocity of the first universe is, but I think it is right, when the velocity is greater, the orbit is elliptical.

Analysis: First, the cosmic velocity is both the minimum launch velocity and the maximum orbiting velocity, and the geostationary satellite is farther away from the earlier the earth, and the farther the distance is known from the law of gravitation, the smaller the orbiting velocity, so the orbiting velocity of the geostationary satellite is smaller. Because the geostationary satellite is synchronized with the rotation of the earth and is also moving in a circle around the earth, the gravitational force provides the centripetal force, so it does not fall.

It can be understood in this way: All objects that can stably orbit the earth have the same energy relative to the earth when they have the same mass: e=(1 2)*m*v 2 This brother v is the first cosmic velocity, m is the mass of the object, this energy contains the kinetic energy of the object relative to the earth and the potential energy relative to the earth, since the total energy is fixed, so the higher the orbit, the smaller the stable orbital velocity of the object, so it can also be known that the orbital velocity of the low earth orbit is the largest.

In the satellite system, various equipment is divided into two parts: payload and satellite platform according to their different functions. The satellite platform is divided into multiple subsystems: payload, different types of satellites are different, and the common ones are:

1 pair of ground cameras.

2 Stellar Camera.

3 Payload carried.

Satellite platforms to provide the environmental and technical conditions for the operation of pre-dust payloads, including:

1 Service system.

2. Thermal control subsystem.

3. Attitude and orbit control subsystem.

4. Program control subsystem.

5 Telemetry subsystems.

6 Remote control subsystem.

7 Tracking and testing subsystems.

8. Power supply and distribution subsystem.

9 Return to the subsystem.

Summary. An artificial earth satellite is an unmanned spacecraft that orbits the earth and orbits more than one circle. Abbreviated as Sputnik.

Artificial satellites are the most launched, most versatile, and fastest-growing spacecraft. It is mainly used in various fields such as scientific exploration and research, weather forecasting, land resource survey, land use, regional planning, communication, tracking, and navigation.

What are the artificial Earth satellites and what is their role?

An artificial earth satellite is an unmanned spacecraft that orbits the earth and orbits more than one circle. Abbreviated as Sputnik. Artificial satellites are the most launched, the most versatile, and the fastest-growing spacecraft.

It is mainly used in various fields such as scientific and rough detection and research, weather forecasting, land resources survey, land use, regional planning, communication, tracking, navigation and so on.

What do they do.

1. Scientific satellitesScientific satellites, listening to what we may not know what they are doing, but the application is actually around us, it mainly carries various instruments, mainly in the atmosphere and in the outer space, the role is to collect all kinds of information from the universe, to give human beings more information about the planets and various substances in the universe, and to prepare for us to go into space.

2. Meteorological satellites we often look at weather forecasts, but how do we know tomorrow's weather conditions, and even now they are more accurate than the previous weather forecasts, the main lack of lifting is through the Fubi meteorological satellite, which contains a meteorological remote sensor, which can receive and measure the visible light, infrared and microwave radiation of the earth's atmosphere, and convert the signal to the ground, so that you can understand the recent weather conditions.

3. Astronomical satellitesAstronomical satellites, as you can know by their names, are used to survey the celestial bodies in the universe and the materials that lease their space, so it is far away from the earth's local key reed, and generally runs in the highest orbit, and there is nothing to block it, and it can record the radio band, infrared band, and visible light band from the celestial body through the instrument, so that people can understand the situation without going to space, relative to clairvoyance.

4. Broadcasting satellites usually we drive to listen to the radio, but also laugh at home to watch TV, are done by radio satellites, it is directly to the user to relay audio, **, and data and other communication satellites, the main characteristics are to be able to transmit in the direction, but there are many receiving points, which is why in the same channel play, we can hear or see the hail containing content, mainly in the application of TV.

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