collect information about artificial satellite launched by India find out how they help us in field of communication and weather forecasting
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The Silk Road was an ancient network of trade routes that connected the East and West. It was central to cultural interaction between them for centuries. The Silk Road refers to both the terrestrial and the maritime routes connecting Asia with the Middle East and southern Europe.
The Silk Road derives its name from the lucrative trade in silk carried out along its length, beginning in the Han dynasty (207 BCE–220 CE). The Han dynasty expanded the Central Asian section of the trade routes around 114 BCE through the missions and explorations of the Chinese imperial envoy Zhang Qian. The Chinese took great interest in the safety of their trade products and extended the Great Wall of China to ensure the protection of the trade route.
A communications satellite, sometimes abbreviated to SATCOM, is an artificial satellite stationed in space for the purposes of telecommunications.
For fixed or point-to-point services, communications satellites provide a microwave radio relay technology complementary to that of submarine communication cables. They are also used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting, for which application of other technologies, such as cable, is impractical or impossible.
Modern communications satellites use a variety of orbits including geostationary orbits, Molniya orbits, other elliptical orbits and low Earth orbits.
Low earth orbiting satellites are less expensive to launch into orbit than geostationary satellites and, due to proximity to the ground, don't require as high signal strength.
With the growing demand for remote access broadband services, satellite networks are becoming increasingly popular. In remote and rural areas, where there is little or no terrestrial communications infrastructure, satellite communications becomes the only viable option.