| X射线脉冲星动态信号处理方法研究 |
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| 作者姓名： | 张大鹏 李治泽 王奕迪 郑伟 |
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| 作者单位： | 国防科技大学 空天科学学院, 长沙 410073;中国西安卫星测控中心, 西安 710043,国防科技大学 空天科学学院, 长沙 410073,国防科技大学 空天科学学院, 长沙 410073,国防科技大学 空天科学学院, 长沙 410073 |
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| 基金项目： | 国家自然科学基金资助项目（0901010517001） |
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| 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。
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| 关 键 词： | X射线脉冲星导航 HXMT XPNAV-1 动态信号处理 |
| 收稿时间： | 2019/5/15 0:00:00 |
| 修稿时间： | 2019/7/23 0:00:00 |
Dynamic Data Processing for X-Ray Pulsar Signal |
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| Authors: | ZHANG Dapeng LI Zhize WANG Yidi and ZHENG Wei |
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| Institution: | College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;Xi''an Satellite Control Center, Xi''an 710043, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China and College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| 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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| Keywords: | X-ray pulsar-based navigation HXMT XPNAV-1 dynamic signal processing |
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