| 摘要 |
PROBLEM TO BE SOLVED: To improve accuracy of correction of an orbit prediction value as a prediction value of a position of an object to be used for tracking the object.SOLUTION: An acquisition part 12 acquires an orbit prediction value as a prediction value of the position of a satellite from external equipment. An offset time calculation part 11 calculates an offset time indicating a time deviation on an orbit between the position of a satellite at a certain time to be estimated from a received satellite signal and the position of the satellite at the time indicated by the orbit prediction value. A selection part 13 acquires information indicating the degree of an error included in the orbit prediction value, and selects any of a plurality of orbit correction models to be used for the correction of the error included in the orbit prediction value on the basis of the information. A correction part 14 applies the offset time calculated by the offset time calculation part 11 to the orbit correction model selected by the selection part 13, and corrects the orbit prediction value. A driving part 15 drives an antenna on the basis of the orbit prediction value transmitted from the acquisition part 12 and the orbit prediction value corrected by the correction part 14. |
