脉冲星脉冲轮廓累积的最小熵方法
发布时间:2019-03-16 10:52
【摘要】:获取脉冲星辐射信号累积轮廓的传统方法是先识别信号周期,再按周期对信号进行折叠累加,这种方法依赖于周期识别的准确性,对累积轮廓质量也无评价标准.本文分析了脉冲星累积轮廓和周期的强相关性,提出了周期未知时直接进行轮廓累积的最小熵方法,并对其进行证明,在此基础上,讨论了该方法在周期识别中的作用.利用仿真数据和RXTE卫星的实测数据实验验证了该方法的有效性.
[Abstract]:The traditional method to obtain the cumulative contour of pulsar radiation signal is to identify the signal period first and then fold and accumulate the signal according to the period. This method depends on the accuracy of the period recognition and has no evaluation criterion for the quality of the accumulated contour. In this paper, the strong correlation between the accumulative contour and the period of pulsar is analyzed, and the minimum entropy method for direct contour accumulation when the period is unknown is proposed and proved. On the basis of this, the function of this method in the period recognition is discussed. The validity of the method is verified by the simulation data and the measured data of RXTE satellite.
【作者单位】: 西安电子科技大学电子工程学院;
【基金】:国家高技术研究发展计划(863)(批准号:2007AA12Z323) 国家自然科学基金(批准号:60772139)资助的课题~~
【分类号】:P145.6
[Abstract]:The traditional method to obtain the cumulative contour of pulsar radiation signal is to identify the signal period first and then fold and accumulate the signal according to the period. This method depends on the accuracy of the period recognition and has no evaluation criterion for the quality of the accumulated contour. In this paper, the strong correlation between the accumulative contour and the period of pulsar is analyzed, and the minimum entropy method for direct contour accumulation when the period is unknown is proposed and proved. On the basis of this, the function of this method in the period recognition is discussed. The validity of the method is verified by the simulation data and the measured data of RXTE satellite.
【作者单位】: 西安电子科技大学电子工程学院;
【基金】:国家高技术研究发展计划(863)(批准号:2007AA12Z323) 国家自然科学基金(批准号:60772139)资助的课题~~
【分类号】:P145.6
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