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arXiv 1507.03576astro-ph.HEastro-ph.IM
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基于孤立X射线脉冲星观测改进卫星轨道的可能性

On the Possibility of Improving the Orbits of Satellites Based on Observations of Isolated X-ray Pulsars

M. G. Revnivtsev, O. E. Gadzhily, A. A. Lutovinov, S. V. Molkov, V. A. Arefiev, M. N. Pavlinsky, A. G. Tuchin

摘要:

目前,全世界都对开发能够利用脉动宇宙源的X射线发射信息为深空航天器提供导航解决方案的技术非常感兴趣。在本文中,我们说明了用于确定空间位置的航天器的基础上,已经存在的数据从RXTE X射线空间天文台的技术。我们表明,航天器的位置对螃蟹脉冲星可以确定使用X射线探测器的有效面积约为0.6平方米的能量范围为3-15 keV的准确度高达730米,在1000秒的信号积分时间。将能量范围扩大到1千电子伏(在能量低于3千电子伏时,RXTE/PCA光谱仪的效率急剧下降),将使航天器在相同的有效面积上的定位精度达到400-450米,而在1-10千电子伏能量范围内使用有效面积约为1平方米的探测器时,定位精度可达300-350米。

英文摘要:

At present, there is a great worldwide interest in the development of technologies that allow information about the X-ray emission from pulsating cosmic sources to be used to obtain navigation solutions for deep-space spacecraft. In this paper, we illustrate the technique for determining the spatial position of a spacecraft based on the already existing data from the RXTE X-ray space observatory. We show that the spacecraft position toward the Crab pulsar can be determined using an X-ray detector with an effective area of about 0.6 sq.m in the energy range 3-15 keV with an accuracy up to 730 m in a signal integration time of 1000 s. Extending the energy range to 1 keV (the efficiency of the RXTE/PCA spectrometer decreases dramatically at energies below 3 keV) will allow a spacecraft position accuracy of 400-450 m to be achieved at the same effective area and up to 300-350 m when using detectors with an effective area of ~1 sq.m in the energy range 1-10 keV.

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