航天器工程2026，Vol.35Issue(3)：23-30,8.DOI:10.3969/j.issn.1673-8748.2026.03.003
星敏感器视场空间误差修正方法和测试验证
A Field-of-view Spatial Error Correction Method for Star Trackers and Test Verification
摘要
Abstract
With the continuous improvement in the imaging and positioning accuracy of remote sensing satellites,higher requirements have been put forward for the attitude measurement per-formance of star trackers.To mitigate measurement errors caused by differences in spot imaging characteristics between the center and edge regions of the field of view,as well as discrepancies between ground and on-orbit operating conditions,a field-of-view spatial error correction method is proposed.A star centroid filtering algorithm is employed to reduce errors generated by the image sensor.Based on multi-orbit star-spot slice image data,a Taylor-robust optimization calibration method is employed to optimize and fit the parameters of the calibration model.The proposed method is validated through ground-based star observation tests and on-orbit flight tests.The re-sults demonstrate that the method can effectively reduce low-frequency spatial errors across the field of view.Statistical analysis of on-orbit data using the optical-axis angle method reveals that the low-frequency spatial error is reduced from 0.0013 degrees to 0.0007 degrees across different orbital passes.The maximum satellite geolocation accuracy error is limited to 4.24m,while the attitude control accuracy is improved by 46.15%and the fuel consumption for attitude control is reduced by 71.00%.These results indicate that the proposed method has significant engineering application value for ultra-high-precision attitude measurement and precision mapping.关键词
星敏感器/星点切片图像/星点滤波/光学畸变校正/测量精度Key words
star tracker/star-spot sliced image/star-spot filtering/optical distortion correction/measurement accuracy分类
航空航天引用本文复制引用
王燕清,施金花,金荷,李瑞轩,郑循江,施桂国,吴爽..星敏感器视场空间误差修正方法和测试验证[J].航天器工程,2026,35(3):23-30,8.基金项目
天基智能信息处理全国重点实验室基金(TJ-04-23-03) （TJ-04-23-03）
