摘要
基于高精度卫星姿态控制仿真三轴气浮台，研制了高精度卫星姿态控制仿真子系统，用于为地面TDICCD动态成像仿真系统提供真实的仿真环境。根据TDICCD实际成像原理，采用软件模拟替代实际线阵相机的TDI电荷转移迭加过程，研制了基于面阵CCD的星载TDICCD动态成像仿真系统。利用该系统，实现了最高指向控制精度为0．1°，姿态稳定度为0．01（°）／s的卫星姿态控制仿真实验，模拟了积分时间为0．1S的TDICCD相机4～16级动态成像过程。研究了卫星姿态对TDICCD相机拍照的影响，分析了实际航天高性能TDICCD相机成像建模理论。像移速度匹配误差为0，姿态稳定度大于0．01（°）／s的实验显示了物理仿真与数学仿真结果与理论分析基本一致，不仅验证了该平台物理仿真方案的正确性，也初步验证了航天CCD成像建模理论的正确性。
A ground-based physical TDI CCD imaging simulation system is developed, which consists of a high precision satellite 3-axis attitude control simulation subsystem based on a 3-axis air bearing table, and a TDI CCD imaging simulation subsystem whose TDI image procedure is simulated by software using an area-array CCD. The designed system realizes the simulation of satellite 3-axis attitude control with a maximum pointing accuracy of 0. 1° and a attitude steady accuracy of 0.01 （°）/s, and implements an imaging simulation of 4-stage to 16-stage TDI CCD with the integration time of 0. 1 s. Furthermore, the effect of satllite 3 axis attitude on the TDICCD photography is researched and the correction of the modeling theory for a space TDI CCD image motion model is proved. Experiment results show that the physical experiment results are in accordance with those of mathematical simulation and theoretical analysis, which justifies the feasibility of system design and the validity of image motion theory.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2011年第3期641-650,共10页
Optics and Precision Engineering
基金
吉林省科技发展计划资助项目(No.20090102)
国家自然科学青年基金项目资助(No.61008046)
关键词
TDI
CCD
物理仿真系统
姿态控制
像移
TDI CCD
physical simulation system
attitude control
image motion
