What is the application of Mozi?

Mozi is one of the communication satellites. However, different from the traditional communication satellite transmitting information directly, Mozi's job is not to transmit the information itself, but to distribute the "key" to decode the encrypted information.

Quantum satellite is one of the first scientific experimental satellites in the space science pilot project of China Academy of Sciences. Its main scientific goal is to carry out high-speed quantum key distribution experiments between satellites and the earth, and on this basis, to carry out wide-area quantum key network experiments in order to make a major breakthrough in the practical application of space quantum communication.

The second is to carry out quantum entanglement distribution and quantum teleportation experiments on the spatial scale, and to carry out experimental research on the completeness test of quantum mechanics on the spatial scale.

The role of satellites

1, artificial earth satellites run in their own orbits, but their functions and uses are different, which can be roughly divided into five categories: communication, meteorology, resources, reconnaissance and navigation.

2. Communication satellites. Its function is to transmit TV and telephone signals for people. Without it, it is difficult to make overseas calls or watch world news and international competitions.

3. Meteorological satellites. The remote sensing equipment it carries can overlook the whole earth's atmosphere and monitor the wind, clouds, rain and forest fires on the earth. Images and data recovered by meteorological satellites are the basis for meteorological scientists to accurately predict global weather.

4. Earth resources satellite. It uses remote sensing instruments to find geographical features that are difficult to find on the ground and at low altitude, and uses the data obtained to accurately estimate the resources of vegetation, geology, hydrology and seawater in various regions of the earth.