飞控与探测2025，Vol.8Issue(5)：70-80,11.DOI:10.20249/j.cnki.2096-5974.2025.05.008
光栅衍射效率对干涉式星敏感器测角影响分析
Analysis of the Influence of Grating Diffraction Efficiency on the Angle Measurement of Interferometric Star Tracker
摘要
Abstract
Aiming at the application requirements of high attitude measurement accuracy of inter-ferometric star tracker,the influence of grating diffraction efficiency on the measurement accuracy of starlight interferometry is analyzed.Based on the angular spectrum propagation theory,the im-aging angle measurement model of the interferometric star tracker is constructed,and the energy distribution of the interference star point is simulated by numerical calculation.At the same time,the influence of the diffraction efficiency change caused by the change of the incident angle and the wavelength on the angle measurement accuracy of the starlight is analyzed respectively.The results show that the change of grating diffraction efficiency caused by the change of incident angle has little effect on the accuracy of starlight interferometry in the field of view of star sensor.The change of diffraction efficiency caused by wavelength change has a great influence on the accuracy of starlight interferometry.With the increase of spectral width,the accuracy of starlight interfer-ometry decreases as a whole.When the starlight changes from monochromatic light to polychro-matic light with spectral width of 300 nm,the accuracy of starlight interferometry decreases from about 0.01″ to about 0.3″.The analysis results of this paper can provide theoretical basis and tech-nical support for the engineering application of interferometric star tracker.关键词
干涉式星敏感器/星光成像测量/测角/朗奇光栅/衍射效率Key words
interferometric star tracker/starlight imaging measurement/angle measurement/Ronchi grating/diffraction efficiency引用本文复制引用
姚帅,张徐玮,叶志龙,孙朔冬,汪洪源,武少冲,廖真,臧云朝..光栅衍射效率对干涉式星敏感器测角影响分析[J].飞控与探测,2025,8(5):70-80,11.基金项目
国家自然科学基金青年基金(61705220) （61705220）
中国航天科技集团有限公司第八研究院产学研合作基金(SAST2023-058) （SAST2023-058）
