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In this paper a high resolution X-ray simulation source is proposed and designed to verify the navigation based on X-ray pulsar in the simulation experience system. The simulation source consists of an arbitrary signal generator and a grid controlled X-ray tube. According to the grid tube's characteristic curve, the data of the pulsar standard pulse template are converted. Then using the method of direct digital frequency synthesis, the converted data are synthesized to waveforms, called the analog modulated grid voltage. In the grid controlled X-ray tube, the grid voltage changes the number of electrons hitting on the target and controls the X-ray intensity. With an analog modulated pulse profile applied on the tube grid electrode, the tube will emit X-rays which will match photons' statistical distribution and simulate the X-ray pulsar profile extremely well. The properties of Crab pulsar simulation source are tested in X-ray pulsar navigation simulation experience system. The results of the test are as follows: Comparing the tested pulse profile with the standard pulsar profile, we have time correlation coefficient is 0.9774, and frequency correlation coefficient is 0.9853. The X-ray photon flux is 1.90 ph·cm-2·s-1, the pulsed fraction is 76.15%, and the half-width half maximum is 1.879 ms. These results show that the X-ray simulation source has several merits, such as: strong ability to simulate the X-ray, low cost and simple operation. So it is an important means for the improvement of X-ray pulsar navigation.
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Keywords:
- X-ray pulsar navigation /
- simulated source /
- grid controlled X-ray tube /
- direct digital frequency synthesis (DDS)
[1] Hewish A, Bell S J, Pilkington J D H, Scott P F, Collins R A 1968 Nature 217 709
[2] Sheikh S I, Pines D J, Ray P S, Wood K S, Lovellette M N, Wolff M T 2004 Proceedings of 14th AAS /AIAA Space Flight Mechanics Conference Maui, HI, February 8-12, 2004, p105
[3] Su Z, Xu L P, Wang T 2011 Acta Phys. Sin. 60 119701 (in Chinese) [苏哲, 许录平, 王婷 2011 60 119701]
[4] Sheng L Z, Zhao B S, Sai X F, Hu H J, Chen D 2010 Chinese Patent 201010140837. 8 [2010-04-07]
[5] Hu H J, Zhao B S, Sheng L Z, Yan Q R 2011 Acta Phys. Sin. 60 029701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 鄢秋荣 2011 60 029701]
[6] Zheng W, Sun S M, Tang J G 2010 1st China Satellite Navigation Conference Beijing, China, May 18-22, 2010 (in Chinese) [郑伟, 孙守明, 汤国建 2010 第一届中国卫星导航学术年会 北京, 2010 5. 18–22]
[7] Sheng L Z, Zhao B S, Zhou F, Liu Y A, Yan Q R, Sai X F, Wei Y L 2012 Chinese Patent 201210087972. X [2012-03-29]
[8] Hu H J, Zhao B S, Sheng L Z, Sai X F, Yan Q R, Chen B M, Wang P 2012 Acta Phys. Sin. 61 019701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 赛小锋, 鄢秋荣, 陈宝梅, 王朋 2012 61 019701]
[9] Tanaka M, Ikeda H, Ikeda M, Inaba S 1992 IEEE Trans Nuclear Science 39 1321
[10] Wang P, Zhao B S, Sheng L Z, Hu H J, Yan Q R 2012 Acta Phys. Sin. 61 209702 (in Chinese) [王朋, 赵宝升, 盛立志, 胡慧君, 鄢秋荣 2012 61 209702]
[11] Yang Y G 2008 Chin. J. Space Sci. 28 330 (in Chinese) [杨廷高 2008 空间科学学报 28 330]
[12] Sheikh S I, Pines D J 2006 J. Guid. Contr. Dyn. 29 49
[13] 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 57 6683]
[14] Sheikh S I 2005 Ph. D. Dissertation (Maryland USA: University of Maryland)
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[1] Hewish A, Bell S J, Pilkington J D H, Scott P F, Collins R A 1968 Nature 217 709
[2] Sheikh S I, Pines D J, Ray P S, Wood K S, Lovellette M N, Wolff M T 2004 Proceedings of 14th AAS /AIAA Space Flight Mechanics Conference Maui, HI, February 8-12, 2004, p105
[3] Su Z, Xu L P, Wang T 2011 Acta Phys. Sin. 60 119701 (in Chinese) [苏哲, 许录平, 王婷 2011 60 119701]
[4] Sheng L Z, Zhao B S, Sai X F, Hu H J, Chen D 2010 Chinese Patent 201010140837. 8 [2010-04-07]
[5] Hu H J, Zhao B S, Sheng L Z, Yan Q R 2011 Acta Phys. Sin. 60 029701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 鄢秋荣 2011 60 029701]
[6] Zheng W, Sun S M, Tang J G 2010 1st China Satellite Navigation Conference Beijing, China, May 18-22, 2010 (in Chinese) [郑伟, 孙守明, 汤国建 2010 第一届中国卫星导航学术年会 北京, 2010 5. 18–22]
[7] Sheng L Z, Zhao B S, Zhou F, Liu Y A, Yan Q R, Sai X F, Wei Y L 2012 Chinese Patent 201210087972. X [2012-03-29]
[8] Hu H J, Zhao B S, Sheng L Z, Sai X F, Yan Q R, Chen B M, Wang P 2012 Acta Phys. Sin. 61 019701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 赛小锋, 鄢秋荣, 陈宝梅, 王朋 2012 61 019701]
[9] Tanaka M, Ikeda H, Ikeda M, Inaba S 1992 IEEE Trans Nuclear Science 39 1321
[10] Wang P, Zhao B S, Sheng L Z, Hu H J, Yan Q R 2012 Acta Phys. Sin. 61 209702 (in Chinese) [王朋, 赵宝升, 盛立志, 胡慧君, 鄢秋荣 2012 61 209702]
[11] Yang Y G 2008 Chin. J. Space Sci. 28 330 (in Chinese) [杨廷高 2008 空间科学学报 28 330]
[12] Sheikh S I, Pines D J 2006 J. Guid. Contr. Dyn. 29 49
[13] 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 57 6683]
[14] Sheikh S I 2005 Ph. D. Dissertation (Maryland USA: University of Maryland)
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