脉冲星脉冲轮廓累积的最小熵方法

摘要

To obtain the cumulation profile of pulsar signal, the traditional method needs to identify its period first, and then fold the signal with the period. This method depends on the accuracy of the period, and it has no evaluation standard for the profile. In this paper we analyze the strong correlation between the cumulation profile and the period, and present a minimum entropy method of pulsar cumulation profile and its verification. Therefore this method is applied to the identification of pulsar cycle. The RXTE data and the simulation data are used to verify the effectiveness of the method.%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.