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X-Ray Pulsar Profile Recovery Based on Tracking-Differentiator

机译:基于跟踪微分的X射线脉冲星轮廓恢复

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摘要

The profile recovery is an important work in X-ray pulsar-based navigation. It is a key step for the analysis on the pulsar signal's characteristic and the computing of time of arrival (TOA). This paper makes an argument for an algorithm based on the tracking-differentiator (TD) to recover the profile from the low Signal-to-Noise Ratio (SNR) signals. In the method, a TD filter with cascade structure is designed which has very low phase delay and amplitude distortion. In the simulation experiment, two typical pulsars (PSR B0531+21 and PSR B1937+21) are used to verify the algorithm's performance. The simulation results show that the method satisfies the application requirements in the aspects of SNR and profile fidelity. By processing the data collected by the Rossi X-Ray Timing Explorer (RXTE) satellite in space, similar results can also be achieved.
机译:轮廓恢复是基于X射线脉冲星导航的重要工作。这是分析脉冲星信号特性和计算到达时间(TOA)的关键步骤。本文提出了一种基于跟踪微分器(TD)的算法,该算法可从低信噪比(SNR)信号中恢复轮廓。在该方法中,设计了具有级联结构的TD滤波器,其具有非常低的相位延迟和幅度失真。在仿真实验中,使用两个典型的脉冲星(PSR B0531 + 21和PSR B1937 + 21)来验证算法的性能。仿真结果表明,该方法满足了信噪比和轮廓保真度方面的应用需求。通过处理太空中由罗西X射线定时资源管理器(RXTE)卫星收集的数据,也可以实现类似的结果。

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  • 来源
    《Mathematical Problems in Engineering》 |2016年第5期|4238165.1-4238165.10|共10页
  • 作者单位

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

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