Research and Implementation of Two-Axis Antenna Shafting Error Calibration Based on Calibration Satellite

The measurement error of the measurement system includes two parts: random error and system error. Random error can be suppressed by smoothing filtering, while system error needs to be corrected. The calibration method is mainly used to correct the system error of the measuring equipment. Currently, there are three calibration methods, which are traditional calibration, star calibration and satellite calibration. In this paper, we plan to use calibration satellite system, the satellite precise ephemeris is used as the spatial position reference. At the same time, we preprocess the external measurement data of the system and correct the atomospheric refaction error and other errors, then obtain the measurement error of the system itself. Finally, the least square method is used to solve the error component of the measurement system.