Precession-nutation correction for star tracker attitude measurement of STECE satellite

Space Technology Experiment and Climate Exploration (STECE) is a small satellite mission of China for space technology experiment and climate exploration. A new test star tracker and.one ASTRO 10 star tracker have been loaded on the STECE satellite to test the new star tracker’s.measurement performance. However, there is no autonomous precession–nutation correction function for the test star tracker, which causes an apparent periodic deflection in the inter-boresight.angle between the two star t