Volume 36 Issue 1
Jan.  2011
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SU Zhe, XU Luping, LIU Qing, WANG Yong. Time Delay Measurement Based on 3rd-order Cross Wavelet-Cumulants for Pulsar Integrated Pulse Profile[J]. Geomatics and Information Science of Wuhan University, 2011, 36(1): 14-17.
Citation: SU Zhe, XU Luping, LIU Qing, WANG Yong. Time Delay Measurement Based on 3rd-order Cross Wavelet-Cumulants for Pulsar Integrated Pulse Profile[J]. Geomatics and Information Science of Wuhan University, 2011, 36(1): 14-17.
shu

Time Delay Measurement Based on 3rd-order Cross Wavelet-Cumulants for Pulsar Integrated Pulse Profile

  • 1 School of Electronic Engineering,Xidian University,2 South Taibai Road,Xi'an 710071,China

Funds: 国家863计划资助项目(2007AA12Z323)，国家自然科学基金资助项目(60772139)，中国科学院精密导航定位与定时技术重点实验室开放研究基金资助项目(2009PNTT09)
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  • Received Date: October 14, 2010
  • Published Date: January 04, 2011
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    • Abstract
  • The X-ray pulsar signal received by moving spacecraft is distorted by Doppler effect,which leads to the low accuracy in pulse arrival time measurement.In order to improve the measurement precision,the pulsar integrated pulse profile time delay measurement algorithm based on 3rd-order cross wavelet-cumulants is proposed.Firstly,the time delay model of X-ray pulsar integrated pulse profile received by moving spacecraft is analyzed.Then,this algorithm estimates the time delay through the peak position of 3rd-order cross wavelet-cumulants of pulsar standard profile and integrated pulse profile.Finally,time delay measurement experiment is processed with different signal-to-noise ratios and types of pulsars.The results show that this algorithm performs better than former algorithms when the received pulsar signal is Doppler-distorted,and is suitable for the arrival time measurement in moving spacecraft.
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