强激光与粒子束, 2015, 27 (5): 051013, 网络出版: 2015-05-20
空间弥散X射线对脉冲星导航精度的影响
Influence of space dispersive X-ray on pulsar navigation
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。
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.
全林, 周庆勇, 赵鹏, 戴泽, 马超伟, 张艳, 石晟玮, 王斌, 王鲲鹏, 欧阳晓平, 张彩红. 空间弥散X射线对脉冲星导航精度的影响[J]. 强激光与粒子束, 2015, 27(5): 051013. Quan Lin, Zhou Qingyong, Zhao Peng, Dai Ze, Ma Chaowei, Zhang Yan, Shi Shengwei, Wang Bin, Wang Kunpeng, Ouyang Xiaoping, Zhang Caihong. Influence of space dispersive X-ray on pulsar navigation[J]. High Power Laser and Particle Beams, 2015, 27(5): 051013.