Research on attitude and orbit measurement calibration technology for low-cost remote sensing satellites

The high-precision measurement of orbit and attitude of low Earth orbit remote sensing satellites often requires expensive instrument equipment, and complex ground calibration processes for imaging equipment, GPS systems, star sensors, and other payloads need to be carried out before satellite launch. In order to evaluate the attitude and orbit measurement capability of the 1st low-cost intelligent remote sensing satellite of Chutian Constellation, this paper designs a satellite attitude and orbit measurement and camera time error calibration method. Under the condition of low satellite attitude measurement accuracy, the ground remote sensing data obtained by the satellite is directly used for Geometric calibration of relevant parameters, which can not only provide reliable data support for the autonomous correction of the attitude and orbit of the whole satellite, but also can be used for precise positioning on board of targets in remote sensing images.