Low Earth Orbit Satellites

Low-earth orbiting satellite "Mr. Watson, come here please, I want you," Alexander Graham Bell cried. The first telephone message in human history. Four). Over 100 years ago, people around the world can communicate via mobile phones. Within six months, people can go anywhere in the world and can carry mobile phones with phone numbers. They can arrive in the center of Los Angeles or the summit of Mount Everest.

LEO (Low Earth Orbit) satellites require a large number of satellites to build a complete system for their rapid movement. In this section, we will explain two things for voice communication and Internet service. The LEO earth satellite enters the orbit cheaper than the geostationary satellite. The combination of satellites that work together is a satellite constellation. Chang Dynasty Design is a global star. It is based on 48 LEO satellites. However, it uses a different switching method from 铱. The global star features the traditional elbow design. The phone from the North Pole was sent back to the earth and received at a big earth station in Santa's workshop. The call is routed via the terrestrial network to the nearest ground station to Cal Lee and sent over the elbow connection. The advantage of the global star approach is that most complexity is the underlying and easy to manage.

Low Earth orbiting satellites run from 50 to 1,200 miles (80 to 2,000 kilometers) above the Earth and run every 90 minutes or so. Traditional communications satellites operate at a height of approximately 22,000 miles (36,000 kilometers) and they appear to float in one place as their orbits take one day to match the rotation of the earth. Lower satellites have advantages in sending and receiving broadband, since the signal suffers a shorter break time and can disrupt the phone and streaming video. As universal broadband becomes more attractive targets, demand for satellite services is also growing, said Tom Stroup, Chairman of the Trade Group Satellite Industry Association.

Satellite lifetime: Some nanosatellites and cubes only stay in the low Earth orbit for six months. Depending on the flight of the rocket, the satellite of SpaceChain should stay on orbit for at least 1 - 2 years, possibly even 5 years (small satellite is an auxiliary payload that must follow the trajectory of the main payload) . At the beginning of February 2018, a test satellite designed and manufactured by Beijing Comsat will be launched. The satellite runs the full node program of the Qtum block chain prototype and has the Raspberry Pi hardware development board carried by the CZ - 2D rocket from the Jiuquan satellite launch center. FullChain Verification Program started by SpaceChain Foundation demonstrates partnership with Qtum Foundation and Beijing Commsat.