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StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

机译:StarNAV:通过星光的相对论摄动对航天器进行自主光学导航

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摘要

Future space exploration missions require increased autonomy. This is especially true for navigation, where continued reliance on Earth-based resources is often a limiting factor in mission design and selection. In response to the need for autonomous navigation, this work introduces the StarNAV framework that may allow a spacecraft to autonomously navigate anywhere in the Solar System (or beyond) using only passive observations of naturally occurring starlight. Relativistic perturbations in the wavelength and direction of observed stars may be used to infer spacecraft velocity which, in turn, may be used for navigation. This work develops the mathematics governing such an approach and explores its efficacy for autonomous navigation. Measurement of stellar spectral shift due to the relativistic Doppler effect is found to be ineffective in practice. Instead, measurement of the change in inter-star angle due to stellar aberration appears to be the most promising technique for navigation by the relativistic perturbation of starlight.
机译:未来的太空探索任务需要增加自主权。对于导航而言尤其如此,在导航中,持续依赖地球资源通常是任务设计和选择的限制因素。为了满足对自主导航的需求,这项工作引入了StarNAV框架,该框架可以使航天器仅使用自然发生的星光的被动观测就可以在太阳系中(或以外)进行自主导航。观测星体的波长和方向的相对论摄动可以用来推断航天器的速度,而航天器的速度又可以用于导航。这项工作开发了控制这种方法的数学方法,并探索了其对自主导航的功效。在实践中,由于相对论多普勒效应而导致的恒星光谱偏移的测量是无效的。取而代之的是,由于星光的相对论性扰动,测量由于恒星像差引起的星际角变化似乎是最有前途的导航技术。

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