| 一种利用三阶互小波累积量的脉冲星累积脉冲轮廓时间延迟测量算法 |
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| 引用本文： | 苏哲,许录平,刘勍,王勇.一种利用三阶互小波累积量的脉冲星累积脉冲轮廓时间延迟测量算法[J].武汉大学学报(信息科学版),2011(1). |
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| 作者姓名： | 苏哲 许录平 刘勍 王勇 |
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| 作者单位： | 西安电子科技大学电子工程学院; |
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| 基金项目： | 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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| 摘 要： | 针对运动航天器收到的脉冲星信号受Doppler效应影响,难以准确测量脉冲到达时间的问题,提出了基于三阶小波互累积量的脉冲星累积脉冲轮廓时间延迟测量算法。结果表明,当信号受到Doppler效应影响时,该算法测量精度优于现有算法,适用于脉冲星导航系统中脉冲到达时间的测量。
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| 关 键 词： | X射线脉冲星导航 累积脉冲轮廓时间延迟 Doppler效应 三阶互小波累积量 |
Time Delay Measurement Based on 3rd-order Cross Wavelet-Cumulants for Pulsar Integrated Pulse Profile |
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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(1). |
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| Authors: | SU Zhe XU Luping LIU Qing WANG Yong |
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| Institution: | SU Zhe1 XU Luping1 LIU Qing1 WANG Yong1 (1 School of Electronic Engineering,Xidian University,2 South Taibai Road,Xi'an 710071,China) |
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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-o... |
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| Keywords: | X-ray pulsar-based navigation time delay of integrated pulse profile Doppler effect 3rd-order cross wavelet-cumulants |
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