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张大鹏, 李治泽, 王奕迪, 郑伟. X射线脉冲星动态信号处理方法研究[J]. 深空探测学报(中英文), 2019, 6(4): 335-340. DOI: 10.15982/j.issn.2095-7777.2019.04.004
引用本文: 张大鹏, 李治泽, 王奕迪, 郑伟. X射线脉冲星动态信号处理方法研究[J]. 深空探测学报(中英文), 2019, 6(4): 335-340. DOI: 10.15982/j.issn.2095-7777.2019.04.004
ZHANG Dapeng, LI Zhize, WANG Yidi, ZHENG Wei. Dynamic Data Processing for X-Ray Pulsar Signal[J]. Journal of Deep Space Exploration, 2019, 6(4): 335-340. DOI: 10.15982/j.issn.2095-7777.2019.04.004
Citation: ZHANG Dapeng, LI Zhize, WANG Yidi, ZHENG Wei. Dynamic Data Processing for X-Ray Pulsar Signal[J]. Journal of Deep Space Exploration, 2019, 6(4): 335-340. DOI: 10.15982/j.issn.2095-7777.2019.04.004

X射线脉冲星动态信号处理方法研究

Dynamic Data Processing for X-Ray Pulsar Signal

  • 摘要: X射线脉冲星导航是一种基于X射线脉冲星观测的新型天文自主导航方法,脉冲星在轨动态信号处理技术一直是脉冲星导航的难点和重点,特别是低轨高动态条件下的信号处理比高轨低动态情况更加困难。针对动态信号处理中实测数据信噪比偏低的问题,提出了一种适用于低轨高动态情况的脉冲星动态信号处理方法,并对其原理进行了分析,建立了相关数学模型,并使用HXMT卫星和XPNAV-1卫星的实测数据验证了算法性能,实验结果表明:该方法有效提高了导航观测量处理精度。

     

    Abstract: X-ray pulsar-based navigation is a novel astronomical autonomous navigation method based on X-ray pulsar observation., The dynamic data processing is one of the key technologies for X-ray Pulsar-based navigation. Especially data processing under the condition of low-orbit and high-dynamic is more difficult than that under the conditions of high-orbit and lowdynamic. Aiming at the measured data with low signal-to-noise ratio,a target function re-estimation method is proposed for the condition of low-orbit and high-dynamic. Furthermore, the principle of the method is analyzed and the mathematical model is constructed. The performance of the method is verified by the measured data from HXMT and XPNAV-1 satellites.

     

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