空间弥散X射线对脉冲星导航精度的影响

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Influence of space dispersive X-ray on pulsar navigation

1.
Beijing Institute of Tracking and Communication Technology,Beijing 100094,China;
2.
Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China;
3.
Northwest Institute of Nuclear Technology,Xi’an 710024,China;
4.
Key Laboratory of Earthquake Geodesy,Institute of Seismology,China Earthquake Administration,Wuhan 430071,ChinaAbstract: Based on space-based data of

摘要: 基于RXTE卫星天基数据，建立了时空坐标系转换、时间修正及历元折叠方法，构建了用于提取导航信息的Crab脉冲星轮廓，剖析了该天基载荷结构及特性，对卫星运行空间背景辐射进行了模拟计算。结果表明，在设定导航条件下，空间弥散X射线对航天器单星定轨及多星定位影响在km量级以上。同时阐述了实用化脉冲星导航探测中，改进导航定位精度急需注意的技术问题。
- RXTE卫星 /
- 脉冲星导航 /
- 脉冲轮廓 /
- 导航精度
Abstract: Based on space-based data of RXTE satellite, we established the method of a space-time coordinate system conversion, time correction and epoch folding, constructed the Crab pulsar contour for extracting navigation information, analyzed the structure and characteristics of space-based loads, and simulated the background radiation with RXTE satellite. In the setting condition of navigation, the accuracies of a single satellite orbit and multi-satellite orbit positionings were quantitatively analyzed, and the urgent attention to the technical problems to improve the navigation and positioning accuracy was described in the later pulsar navigation detection.
- RXTE satellite /
- pulsar navigation /
- pulse profile /
- navigation accuracy