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随着小卫星功能需求不断提升,小卫星同轨立体成像技术成为学者研究的焦点。针对某小卫星单线阵CCD相机同轨立体成像期间的姿态控制半物理仿真展开研究。分析得出小卫星同轨立体成像过程中的姿态运行规律,对同轨立体成像的姿态控制算法进行设计,利用相似原理和姿态运行规律设计半物理仿真环境。基于高精度单轴气浮转台和星上部件建立小卫星立体成像姿态控制半物理仿真平台。利用该平台进行了同轨立体成像相关的姿态控制半物理实验。实验结果表明该小卫星立体成像过程中俯仰轴机动52°,用时67s完成,且达到三轴稳定状态。姿态控制指向精度优于0.05°,稳定度优于0.005°/s。表明设计的小卫星姿控方案可以完成单线阵CCD的同轨立体成像。
With the continuous improvement of the function of small satellites, small satellites on the same track three-dimensional imaging technology has become the focus of scholars. Aiming at the semi-physical simulation of attitude control during the same orbit stereo imaging of a small satellite single-line CCD camera, The attitude of the satellite in orbit imaging is analyzed and the attitude control algorithm of the same orbit is designed. The semi-physical simulation environment is designed by the principle of similarity and attitude. A Semi-physical Simulation Platform for Stereoscopic Attitude Control of Small Satellites Based on High-precision Single-axis Floating Flight Platform and Onboard Components. The platform is used to conduct the semi-physical experiment of attitude control related to the same-track stereo imaging. The experimental results show that the pitch axis of the small satellite is maneuvered by 52 ° in three-dimensional imaging and completed in 67 seconds, and the three-axis steady state is achieved. Attitude control pointing accuracy better than 0.05 °, stability better than 0.005 ° / s. It shows that the designed small satellite attitude control scheme can accomplish the same-orbit stereo imaging of single-line CCD.