脉冲星脉冲轮廓累积的最小熵方法

张华; 许录平

doi:10.7498/aps.60.039701

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.

关键词:

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.

Keywords:

作者及机构信息

张华,
许录平

1.
西安电子科技大学电子工程学院,西安 710071

基金项目: 国家高技术研究发展计划(863)(批准号:2007AA12Z323)和国家自然科学基金(批准号:60772139)资助的课题.

Authors and contacts

1.
School of Electronic Engineering, Xidian University, Xi’an 710071, China

参考文献

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[2]	ESAMDIN A,Wu X J, Zhang J,Wang Na, Kang L S, Jin S Z, Zhang H B,Wang W X 2000 Acta Astrophysica Sinica 3 59(in Chinese)[伊·艾力、吴鑫基、张晋、王娜、康连生、金声震、张洪波、王维侠 2000 天体物理学报 3 259]
[3]	Kramer M 1994 A&AS 107 527
[4]	Xu X B, Wu X J 2002 Science in China Ser. A 12 1134 (in Chinese) [徐轩彬、吴鑫基 2002 中国科学(A辑) 12 1134]
[5]	Zhong C X, Yang T G 2007 Acta Phys. Sin. 56 6157 (in Chinese) [仲崇霞、杨廷高 2007 物理学报 56 6157]
[6]	Taylor J H 1992 Phil. Trans R. Soc. Lond. 341 117
[7]	Xie Z H, Xu L P, Ni G R 2008 Acta Phys. Sin. 57 6683 (in Chinese) [谢振华、许录平、倪广仁 2008 物理学报 57 6683 ]
[8]	Sheikh S I 2005 Ph. D. Dissertation (Maryland:University of Maryland)
[9]	Li J X, Ke X Z 2008 Acta Astronomica Sinica 4 394 (in Chinese)[李建勋、柯熙政 2008 天文学报 4 394]
[10]	Seward F D, Harnden F R, Helfand D J 1984 Astrophysical Journal 287 L19
[11]	Li J X, Ke X Z 2010 Acta Phys. Sin. 59 8304 (in Chinese)[李建勋、柯熙政 2010 物理学报 59 8304]
[12]	Zhang H, Xu L P, Xie Q, Luo N 2011 Acta Phys. Sin. 50 (in Chinese) (in press) [张华、许录平、谢强、罗楠 2011 物理学报 50 ](已接受)
[13]	Gregory P C, Loredo T J 1996 ApJ 473 1059
[14]	Papoulis A, Pillai S U (Translated by Bao Z, Feng D Z, Shui P L)2004 McGraw-Hill (Xi’an Jiaotong University Press)p530 (in Chinese)[帕普里斯.A,佩莱.S.U著保铮,冯大政,水鹏朗译 2004 概率、随机变量与随机过程 (西安交通大学出版社)第530页]
[15]	Rxte. FTP:legacy.gsfc.nasa.gov.

施引文献

[1]	Ji P Y,ZHU J 2008 Chin.Phys. B 17 356
[2]	ESAMDIN A,Wu X J, Zhang J,Wang Na, Kang L S, Jin S Z, Zhang H B,Wang W X 2000 Acta Astrophysica Sinica 3 59(in Chinese)[伊·艾力、吴鑫基、张晋、王娜、康连生、金声震、张洪波、王维侠 2000 天体物理学报 3 259]
[3]	Kramer M 1994 A&AS 107 527
[4]	Xu X B, Wu X J 2002 Science in China Ser. A 12 1134 (in Chinese) [徐轩彬、吴鑫基 2002 中国科学(A辑) 12 1134]
[5]	Zhong C X, Yang T G 2007 Acta Phys. Sin. 56 6157 (in Chinese) [仲崇霞、杨廷高 2007 物理学报 56 6157]
[6]	Taylor J H 1992 Phil. Trans R. Soc. Lond. 341 117
[7]	Xie Z H, Xu L P, Ni G R 2008 Acta Phys. Sin. 57 6683 (in Chinese) [谢振华、许录平、倪广仁 2008 物理学报 57 6683 ]
[8]	Sheikh S I 2005 Ph. D. Dissertation (Maryland:University of Maryland)
[9]	Li J X, Ke X Z 2008 Acta Astronomica Sinica 4 394 (in Chinese)[李建勋、柯熙政 2008 天文学报 4 394]
[10]	Seward F D, Harnden F R, Helfand D J 1984 Astrophysical Journal 287 L19
[11]	Li J X, Ke X Z 2010 Acta Phys. Sin. 59 8304 (in Chinese)[李建勋、柯熙政 2010 物理学报 59 8304]
[12]	Zhang H, Xu L P, Xie Q, Luo N 2011 Acta Phys. Sin. 50 (in Chinese) (in press) [张华、许录平、谢强、罗楠 2011 物理学报 50 ](已接受)
[13]	Gregory P C, Loredo T J 1996 ApJ 473 1059
[14]	Papoulis A, Pillai S U (Translated by Bao Z, Feng D Z, Shui P L)2004 McGraw-Hill (Xi’an Jiaotong University Press)p530 (in Chinese)[帕普里斯.A,佩莱.S.U著保铮,冯大政,水鹏朗译 2004 概率、随机变量与随机过程 (西安交通大学出版社)第530页]
[15]	Rxte. FTP:legacy.gsfc.nasa.gov.

[1]	朱孝先, 高亦谈, 王羡之, 王一鸣, 王佶, 王兆华, 赵昆, 魏志义. 阿秒脉冲串产生和相位信息重构的对比研究. 物理学报, 2024, 0(0): . doi: 10.7498/aps.73.20240292

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