What's the use of interstellar satellites?

An aircraft designed and manufactured by human beings and sent into space by rockets to orbit the earth or other planets is called "artificial satellite" or "satellite" for short; The space shuttle and space station are actually artificial satellites. Usually, an aircraft far away from the earth to detect other planets, satellites or the sun itself in the solar system is called a detector or a planetary detector. Sometimes it is also called a spaceship. "Planet Exploration" is taken from the Chinese entry of CEO Xing Tan, the Chinese pinyin of Encyclopedia of China. Foreign language entry of Planet Exploration by Hang Hengrong. Knowledge Classification: Aerospace/[Spacecraft Classification]/[Spacecraft Application]/Planetary Exploration Humans have long observed the details of the circular surface of the planet with the help of astronomical telescopes, and discovered Saturn's rings, Jupiter's moons and Uranus. The law of universal gravitation discovered Neptune and Pluto successively; With the help of modern photography, spectroscopy and photometry, we have a certain understanding of the physical characteristics and chemical composition of the planet surface. However, observing planets through the atmosphere on the ground can no longer satisfy the in-depth study of planets. Planetary and interplanetary probe has opened up new prospects for planetary research. Since the late 1950s, the United States and the Soviet Union have successively launched more than 60 planetary probes (see space probes). Detection methods include: flying to the vicinity of planets to take pictures and measuring their radiation and magnetic fields. For example, Mariner 4 took the first photos of Mars at a distance of about 1 10,000 km; A hard landing on the planet's surface directly detected the planet's atmosphere. For example, Venus 4 obtained the data of Venus' atmospheric temperature and pressure in this way; Fly around the planet and become a planet. Mars exploration by probes 2, 3 and 5, and Venus exploration by 1; Soft landing on the planet, and detailed analysis and detection of the planet's surface, such as Viking 1 and Mars exploration of No.2 probe, Pioneer 7 ~ 16 Venus probe. Through these observations, people have obtained a lot of measured data about the planet's surface, atmosphere, surrounding space and interplanetary space, deepened their understanding of planetary geology, landform, magnetic field, radiation zone, atmospheric composition and interplanetary space, and confirmed that there is no life form on earth on Mars and Venus. Satellite * * *, free encyclopedia jump to: navigation.

Search satellites are devices built by human beings, launched into space by space vehicles such as rockets and space shuttles, and orbiting the earth or other planets like natural satellites. However, if there is no misunderstanding, it can also be called satellite. If it is surrounded by the sun, it can be called an artificial planet. Directory [Hidden] 1 Satellite History 2 See 3 Satellite Engineering System 4 Satellite System Composition 5 Reference 6 External Links [Edit] Satellite History [Edit] See Picture Reference: upload.wikimedia/ * * */Mons/Thumb/E/E6/satellite.jpg/250px-satellite.jpg Picture Reference: zh. * * */Skins-1.5/mon/images/Magnify-clip Satellite and Space Shuttle Timetable Distinguish GEO: Geostationary Orbit High Orbit Satellite by Orbit Type.

About 36,000 kilometers above the surface.

And orbit the earth on the equator.

Sun-synchronous quasi-regression orbit, also known as polar orbit, is distinguished according to orbital height: high-orbit satellites, also known as geostationary orbit (GEO), are about 36,000 kilometers away from the earth's surface.

And orbit the earth on the equator.

Also known as MEO (medium earth orbit) or LEO (near earth orbit), among geostationary orbit satellites, according to the satellite weight, Large satellites (more than 3,000 kg) > 3 tons of medium-sized satellites (less than 3,000 kg) < 3 tons of small satellites (less than 65,438+) 0,000 kg) < 1 ton of micro-satellites (150 kg) Micro-satellites (50 kg) are classified according to satellite functions: commercial communication satellites, scientific satellites and military satellites. Meteorological satellite Meteorological satellite: In ancient times, people could only guess the changeable climate by experience at most. The appearance of meteorological satellites enables people to master climate change in a few days. Observing the earth from distant space, meteorological satellites can not only observe the weather changes in large areas, but also observe the weather changes in small areas. Generally, when we watch news and weather forecast, the satellite cloud picture behind the anchor is the observation result of meteorological satellite. And the forecast of typhoon is familiar to everyone. Besides observing the weather and climate of the earth, meteorological satellites can also monitor the so-called space weather. Such as storms on the surface of the sun. Such events often cause damage to many electrical appliances on the earth. Meteorological satellites have other functions. It can provide monitoring information for natural disasters such as floods and forest fires, and also provide some information for fishery resources or land resources. In this way, the development of various natural resources and the relief of natural disasters can achieve twice the result with half the effort. Earth observation satellites: These satellites allow scientists to collect valuable data about the earth's ecosystem. Navigation satellite navigation satellite: Navigation satellite was originally designed for military use, but later, due to the strong demand of the people, the military released this technology. One of the most famous and widely used is the global satellite positioning system (GPS) originally used by the US military. The use of global satellite system makes human traffic safer and more efficient. Especially for ships sailing in the vast sea or planes in the boundless sky, with GPS, they will not lose their way and can control the channel in the most efficient way. Therefore, in addition to increasing safety, it can further reduce freight. At the same time, not only sea transportation and air transportation, but also other railway transportation can improve transportation efficiency. In recent years, due to the development of electronic technology, the receiving instruments of GPS are getting smaller and smaller. At present, some advanced automobile factories have installed this set of equipment on personal vehicles. Its function can not only be used as a map, but also guide the owner to the nearest route through the ground service station, and even avoid the trouble of traffic jam. Until today, the global positioning system is mostly a supplement to other kinds of satellites, which makes the above satellites have more accurate positioning ability and greatly improves the availability of data. Astronomical satellites, reconnaissance satellites, space satellites, towed-free satellites, scientific and technological satellites, early warning satellites, anti-satellite satellites are classified into recoverable satellites, non-recoverable satellites (or transmission satellites), famous artificial satellites (in order of launch time), Soviet satellites 1 (1 95710.04) and synchronous communications in the United States. 963), No.2 (1963) and satellites alone are not enough. A complete satellite engineering system is needed, which generally consists of the following systems: launch site system, launch vehicle system, satellite system, measurement and control system, satellite application system, recovery area system (recoverable satellite only) [Editor] The composition of satellite system is in the satellite system, and all kinds of equipment are divided into effective ones according to different functions. Satellite platform is divided into several subsystems: payload (different types of satellites are different, the same below * * *) ground camera and payload satellite platform carried by satellite camera (providing environment and technical conditions for payload operation, including:) attitude and orbit control subsystem of service system, program control subsystem, telemetry subsystem, remote control subsystem, tracking and testing subsystem, power supply and distribution subsystem, return subsystem (limited return satellite) satellite structure platform.