| 旋转条件GPS接收信号频率和相位变化分析 |
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| 引用本文： | 申强,王猛,李东光.旋转条件GPS接收信号频率和相位变化分析[J].北京理工大学学报,2009,29(1):35-37. |
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| 作者姓名： | 申强 王猛 李东光 |
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| 作者单位： | 北京理工大学,宇航科学技术学院,北京,100081 |
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| 摘 要： | 针对高旋转弹丸GPS接收机无法正常工作的问题,通过计算和分析高旋转条件GPS接收信号的频率和相位变化,为设计高旋转条件GPS接收机基带算法提供依据. 根据弹丸旋转运动特点和GPS信号的传播特性建立数学模型,对由于旋转引起的GPS接收信号的多普勒频率和相位变化进行计算. 结果表明,在转速为200r/s时,产生的载波最大多普勒频移为300Hz,相位变化为0.6π,这对载波环路跟踪会产生很大影响. 而码多普勒频移和相位变化不大. 计算结果对高旋转条件GPS信号捕获和跟踪算法设计具有重要参考价值.
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| 关 键 词： | 全球定位系统(GPS) 高速旋转 天线 捕获 跟踪 |
| 收稿时间： | 2008/7/17 0:00:00 |
Analysis on Frequency and Phase of Received GPS Signalin Condition of Spinning |
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| SHEN Qiang,WANG Meng and LI Dong-guang.Analysis on Frequency and Phase of Received GPS Signalin Condition of Spinning[J].Journal of Beijing Institute of Technology(Natural Science Edition),2009,29(1):35-37. |
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| Authors: | SHEN Qiang WANG Meng and LI Dong-guang |
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| Institution: | School of Aerospace Science and Engineering;Beijing Institute of Technology;Beijing 100081;China |
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| Abstract: | Addressing the problem that GPS receiver has no way to work regularly for the high revolution projectiles,the change of GPS singnal's frequency and phase in condition of advanced spinning is calculated and analyzed to provide a basis for designing baseband algorithm of GPS receiver.The mathematical moderation is built up according to the features of spinning projectile's movement and the GPS signal's propagation and the Doppler frequency shift and phase of received signal calculated.The result showed that t... |
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| Keywords: | global position system(GPS) advanced spinning antenna capturing tracking |
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