Satellite communication earth station and communication control method

A satellite communication earth station for adjusting an azimuth angle, an elevation angle, and a polarization angle of an antenna to a communication satellite and then transmitting and receiving a radio wave between the antenna and the communication satellite, the satellite communication earth station comprising:

• a detection unit configured to detect a longitude, a latitude, an altitude, an azimuth, and an inclination of the antenna;
• a drive unit configured to drive the antenna to adjust the azimuth angle, the elevation angle, and the polarization angle of the antenna to the communication satellite in accordance with the longitude, the latitude, the altitude, the azimuth, or the inclination detected by the detection unit;
• a determination information acquisition unit configured to acquire determination information necessary to determine accuracy of detection of the longitude, the latitude, and the altitude of the antenna detected by the detection unit;
• a determination unit configured to determine whether the accuracy of detection of the longitude, the latitude, and the altitude detected by the detection unit is in a necessary and sufficient level in accordance with the determination information acquired by the determination information acquisition unit;
• and
• a stop processing unit configured to stop transmission of the radio wave from the antenna when the determination unit determines that the accuracy of detection of the longitude, the latitude, and the altitude is not in the necessary and sufficient level, wherein
• the detection unit
• detects the longitude, the latitude, the altitude, the azimuth, and the inclination of the antenna also after elapse of a predetermined time after the stop processing unit stops the transmission of the radio wave from the antenna, and
• the drive unit
• drives the antenna to adjust the azimuth angle, the elevation angle, and the polarization angle of the antenna to the communication satellite in accordance with the longitude, the latitude, the altitude, the azimuth, and the inclination of the antenna detected by the detection unit after elapse of the predetermined time after the stop processing unit stops the transmission of the radio wave from the antenna.