What are the different types of artificial satellites in the world and what are their functions?

Encyclopedia: Artificial satellites are currently the spacecraft with the largest number of launches, the most extensive uses, and the fastest development. Artificial satellites are divided into low-orbit satellites, medium-high orbit satellites, various artificial satellites, geostationary satellites, sun-synchronous satellites, large elliptical orbit satellites and polar-orbit satellites according to different operating orbits. According to their uses, artificial satellites can be divided into communication satellites, meteorological satellites, reconnaissance satellites, navigation satellites, geodesic satellites, interception satellites, and so on.

These satellites, which are of various types and uses, have made great contributions to mankind.

Meteorological satellites are used for weather forecasting, flood prevention and disaster reduction, etc.

Reconnaissance satellites: so-called spy satellites in the military.

Navigation satellites: the most common GPS Beidou and other navigation and positioning.

Geodesic satellites: Earth observations.

Interception satellite: A satellite that militarily shoots down another country's satellite.

The advantage of artificial satellites is that they can process large amounts of data at the same time and transmit them to any corner of the world, using three satellites to cover all parts of the world. According to the purpose of use, the artificial satellite continental-based can be divided into the following categories: (1) Scientific satellites:

Satellites sent into space orbit to carry out atmospheric physics, astrophysics, geophysics, and other experiments or tests, such as Zhonghua Satellite No. 1 and Haber. (2) Communication satellites: satellites used as telecommunications relay stations, such as:

Asiasis One. (3) Military satellites: satellites used for military photography and reconnaissance.

4) Meteorological satellites: satellites that acquire cloud maps and related meteorological data. (5) Resource satellites:

Satellites that acquire images of the Earth's surface or deep composition for the purpose of Earth resource exploration. (6) Interstellar satellites: satellites that can sail to other planets for exploration and photography, generally known as planetary probes, such as Pioneer, Mars, Pathfinder, etc.

Artificial satellites are widely used, some are equipped with photographic equipment, and are used to take pictures of the ground, reconnoitre, investigate resources, monitor the earth's climate and pollution, etc.; Some are equipped with astronomical observation equipment for astronomical observations; Some are equipped with communication relay equipment, which are used to relay radio, television, data communication, ** and other communication signals; Some are equipped with scientific research equipment, which can be used for scientific research and special production under the condition of no gravity in space. In short, artificial satellites have different uses depending on the purpose of development, production, and use.

It has a wide range of uses, some are equipped with photographic equipment, which are used to take pictures of the ground, reconnoitre, investigate resources, monitor the earth's climate and pollution, etc.; Some are equipped with astronomical observation equipment for astronomical observations; Some are equipped with communication relay equipment, which are used to relay radio, television, data communication, ** and other communication signals; Some are equipped with scientific research equipment, which can be used for scientific research and special production under the condition of no gravity in space.

A satellite is a natural celestial body that orbits a planet and orbits periodically in a closed orbit, and an artificial satellite can also be called a satellite. An artificial satellite is a device built by human beings and launched into space with space flight vehicles such as rockets and space shuttles to orbit the earth or other planets like natural satellites.

Reconnaisance satellites are artificial earth satellites used to collect and intercept military intelligence, and the advantages of satellite reconnaisance are that they have a wide range of reconnaissance, are fast, and can monitor a certain area regularly or continuously without being restricted by national borders, and are of great significance for enhancing the country's military strength and comprehensive national strength. Reconnaissance satellites are generally divided into photographic reconnaissance satellites, electronic reconnaissance satellites, marine surveillance satellites, and early warning satellites according to the tasks they perform and the reconnaissance means they use.

Navigation Global Positioning System (GPS), also known as "navigation", is a constellation of 24 satellites that can pinpoint any location on Earth. Users can receive signals from four GPS satellites and calculate position data with a tiny receiver with an accuracy of 5 meters at a military level and 15 meters on average.

Main features: does not emit light, orbits the planets, and orbits the stars with the planets.

Artificial satellites can be divided into three main categories if they are divided by use: scientific satellites, technical test satellites and application satellites.

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.

Technical test satellites are satellites that conduct new technology tests or conduct tests 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; What is the performance of a new satellite, it can only be applied after it is launched into the sky for actual "exercise" and successful experiments; Animal testing must be carried out before a person can go to heaven......These are the missions of the technical test satellites.

Application satellites are satellites that directly serve mankind, and they have the largest variety and quantity, including: communication satellites, meteorological satellites, reconnaissance satellites, navigation satellites, geodesic satellites, earth resources satellites, interception satellites, and so on.

Small size, low accident rate, high accuracy, large amount of chips, small power consumption. The above five are the characteristics of satellites. Artificial satellites can remotely monitor items on the ground, which is conducive to public security management.

It can be connected with car navigation to help people drive safely. Coordinates on the ground can be quickly located to help people lock their location.

It does not emit light, can orbit planets, and can also orbit with stars. It has a normal function, can investigate the data, and can also avoid the situation of climate pollution. It can also monitor the earth and has photographic equipment.

The advantage of artificial satellites is that they can process a large amount of data at the same time and can transmit to any corner of the world, the use of three satellites can cover all parts of the world, according to the purpose of use, artificial satellites can be roughly divided into the following 7 categories:

1. Scientific satellites: satellites sent into space orbit for experiments or tests in atmospheric physics, astrophysics, geophysics, etc., such as Zhonghua Satellite No. 1, Haber, etc.

2. Communication satellites: satellites used as telecommunications relay stations, such as Yawei-1.

3. Military satellite: a satellite used for military photography and reconnaissance.

4) Meteorological satellites: satellites that acquire cloud maps and related meteorological data.

6. Resource satellites: satellites that take images of the surface or deep composition of the earth and use them for the exploration of earth resources.

7. Interstellar satellites: Satellites that can sail to other planets for exploration and photography are generally called planetary probes, such as Pioneer, Mars, Pathfinder, etc.

Artificial Earth satellites can be divided into three main categories according to their use:

1. Scientific satellites, 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. Technical test satellites, which are satellites that conduct new technology tests or tests for application satellites. New principles, new technologies, new schemes, new instruments and equipment, and new materials in aerospace technology often need to be tested on the track, and only after the test is successful can it be put into practical use. The number of such satellites is small, but the test content is extensive, such as gravity gradient stability test, electric rocket test, biological adaptability test to the space environment, manned spacecraft life support system and return system verification test, rendezvous and docking test, new radio frequency band transmission test, new remote sensor flight test and orbital interception test, etc.;

3. Application satellites, application satellites are satellites that directly serve mankind, and they have the largest variety and quantity, including: communication satellites, meteorological satellites, reconnaissance satellites, navigation satellites, geodesic satellites, earth resources satellites, interception satellites, and so on.