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Experimental Study for μ-class Control of Relative Position and Attitude for Synthetic Aperture Telescope Using Formation Flying Micro-satellites

机译:使用形成飞行微卫星对合成孔径望远镜相对位置和姿态控制的实验研究

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Earth remote sensing from geostationary orbit (GEO) realizes high time resolution that is essential for disaster monitoring; however, the spatial resolution is commonly worse than observation from low Earth orbit (LEO). In order to achieve high-resolution and high-frequency GEO remote sensing, we have proposed a “Formation Flying Synthetic Aperture Telescope (FFSAT)” with multiple micro-satellites. The FFSAT can improve the spatial resolution by using the technique of a synthetic aperture, and therefore the relative positions and attitudes between the optical units of each satellite must be controlled with an accuracy better than 1/10 of the observation wavelength. In order to verify feasibility of such highly accurate control, μ-class control experiments were conducted by using COTS components, and numerical models of the components were constructed. Results of the experiments were integrated into a software simulator, and the μ-class formation flying control of the entire FFSAT system was numerically evaluated. In this simulation, highly accurate control was achieved with dual-stage actuators, which consist of piezo actuators and thrusters. The simulation results show that the formation can be controlled in μ-class accuracy under some assumptions.
机译:地球静止轨道(GEO)的地球遥感意识到灾害监测至关重要的高时间分辨率;然而,空间分辨率通常比从低地球轨道(LEO)的观察更差。为了实现高分辨率和高频地理遥感,我们提出了一种“成型飞行合成孔径望远镜(FFSAT)”,具有多种微卫星。 FFSAT可以通过使用合成孔的技术来改善空间分辨率,因此必须以优于观察波长的1/10的精度来控制每个卫星的光学单元之间的相对位置和态度。为了验证这种高精度控制的可行性,通过使用Cots组分进行μ-级控制实验,构建组分的数值模型。实验结果集成到软件模拟器中,并在数值评估整个FFSAT系统的μ级地层飞行控制。在该模拟中,通过双级执行器实现了高精度控制,该双级执行器由压电执行器和推进器组成。仿真结果表明,在某些假设下,可以在μ级精度控制地层。

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