| 基于多普勒的二维切换预测算法 |
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| 引用本文： | 陈晓挺.基于多普勒的二维切换预测算法[J].通信技术,2010,43(5):151-153,216. |
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| 作者姓名： | 陈晓挺 |
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| 作者单位： | 中国科学院上海微系统与信息技术研究所,上海,200050;中国科学院研究生院,北京,100049 |
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| 摘 要： | 文中研究了在低轨卫星星座中,星上处理器利用地面移动用户终端上行信号固有的多普勒频移信息预测切换时间的算法,该算法无需用户终端额外辅助。针对DDBHP算法预测误差大、成功率低等问题,提出了二维切换预测（2-DDUHP）算法,分析了解其唯一性,并给出了低复杂度的求解过程。研究表明：该预测算法能在各种仰角和测量条件下稳定工作,并能容忍较大的多普勒测量误差,有较强的实用价值。
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| 关 键 词： | 低轨卫星星座 切换预测 多普勒频偏 球面三角学 |
Doppler-based 2D Handover Prediction Algorithm for LEO Constellation |
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| CHEN Xiao-ting.Doppler-based 2D Handover Prediction Algorithm for LEO Constellation[J].Communications Technology,2010,43(5):151-153,216. |
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| Authors: | CHEN Xiao-ting |
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| Affiliation: | CHEN Xiao-ting (Shanghai Institute of Micro-system , Information Technology,Chinese Academy of Sciences,Shanghai 200050,China,Graduate University,Beijing 100049,China) |
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| Abstract: | A handover prediction algorithm based on inherent Doppler shift of the uplink signals is proposed and studied,and this algorithm could perform onboard LEO satellites without the aid of earth terminals.The proposed 2-Dimension Doppler-based Uplink Handover Prediction(2-D DUHP) technique solves the problems of DDBHP algorithm as large prediction error and instability,and then the unique of the solution is analyzed and low-complexity solution is given.The research results indicate that the proposed prediction ... |
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| Keywords: | LEO constellation handover prediction doppler drift spherical trigonometry |
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