敏捷卫星偏流角计算模型研究

TDICCD相机成像时为保证图像品质,要求对偏流角进行修正。文章针对敏捷卫星任意姿态角建立了在星下点成像、俯仰姿态机动后成像、滚动姿态机动后成像,以及滚动加俯仰姿态机动后成像几种情况下偏流角计算模型,并对模型进行了仿真计算。结果表明,敏捷卫星姿态目标计算当中,有必要考虑姿态机动带来的偏流角控制目标变化,以保证姿态控制精度。文章对敏捷卫星的偏流角控制设计、计算和测试验证工作有参考价值。

Research on Computation Model of Bias Angle for Agile Satellite

TDICCD camera＇s image motion needs to be compensated by bias angle control to en sure the image quality. This research provides the computation model of bias angle for agile satellite with various attitudes, such as nadir imaging, roll attitude, pitch attitude, roll and pitch attitude etc. And a simulation model is developed. The simulation result indicates that the bias angle changing with attitude control needs to be recalculated to ensure the attitude pointing accuracy, when calculating the agile satellite attitude aim pointing. This research can be used to bias angle design, calculation and verification.