1, static communication: an antenna refers to an antenna that can automatically find stars at a fixed place.

2. Communication in motion: the communication system of the satellite ground station in motion.

Second, the characteristics are different.

1. Static communication: Access the main network through the fixed communication satellite, and establish communication connection with the satellite site, while the static communication antenna can only communicate with the satellite in real time under static state.

2. Communication in motion: Vehicles, ships, planes and other moving carriers can track the platforms such as satellites in real time during the movement, and continuously transmit multimedia information such as voice, data and images, which can meet the requirements of emergency communication and multimedia communication under the mobile conditions in Zhong Junmin.

Third, the advantages are different.

1, static communication: calculate the antenna orientation and the theoretical orientation of the star by using the celestial body-to-star theory, and obtain the current orientation of the antenna through the electronic compass. Compare the actual value with the calculated theoretical value, and if not, adjust the antenna position.

2. Communication in motion: It has solved the difficulty of real-time transmission of multimedia information such as voice, data, high-definition dynamic video images, faxes and so on by various mobile carriers such as cars and ships through geosynchronous satellites.

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