| Kalman滤波估计GPS载波相位变率的测速方法与实现 |
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| 引用本文： | 田良辉,刘根友,郭爱智.Kalman滤波估计GPS载波相位变率的测速方法与实现[J].大地测量与地球动力学,2011,31(1):72-77. |
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| 作者姓名： | 田良辉 刘根友 郭爱智 |
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| 作者单位： | 1)中国科学院测量与地球物理研究所动力大地测量学重点实验室，武汉 430077;2)中国科学院研究生院，北京 100049 |
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| 基金项目： | 国家自然科学基金(40974013); 国家863计划项目(2006AA06A202) |
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| 摘 要： | 利用差分测速和Kalman滤波估计相位变率方法对某次航空重力测量的飞行数据进行了解算,通过与GT-1A自带的GPS高精度定位测速软件和WAY-Point软件比对分析,结果表明:采用Kalman滤波估计相位变率的GPS差分测速,能够适应较复杂的运动模式,定速精度达到mm/s级,高于WAY-Point软件的动态测速精度.
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| 关 键 词： | 多普勒 载波相位变率 GPS 差分测速 Kalman滤波 |
METHOD OF VELOCITY MEASUREMENT BY GPS CARRIER PHASE-RATE ESTIMATED FROM KALMAN FILTER AND ITS IMPLEMENT |
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| Tian Lianghui,Liu Genyou,Guo Aizhi.METHOD OF VELOCITY MEASUREMENT BY GPS CARRIER PHASE-RATE ESTIMATED FROM KALMAN FILTER AND ITS IMPLEMENT[J].Journal of Geodesy and Geodynamics,2011,31(1):72-77. |
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| Authors: | Tian Lianghui Liu Genyou Guo Aizhi |
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| Institution: | Tian Lianghui1,2),Liu Genyou1) and Guo Aizhi1,2)(1)Key Laboratory of Dynamic Geodesy,Institute of Geodesy and Geophysics,CAS,Wuhan 4300772)Graduate University of Chinese Academy of Science,Beijing 100049) |
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| Abstract: | The accuracy of moving carrier's velocity,which was determined by GPS,depends on mainly accuracy of carrier phase-rate.It is difficult to guarantee accuracy of velocity with raw Doppler and differential phase.Carrier phase-rate estimated from Kalman filter was adopted to determine the velocity instead of Doppler.The model and theory of differential velocity measurement and carrier phase-rate estimated by Kalman filter were introduced.The flight data of a certain airborne gravimetry were calculated with Kalm... |
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| Keywords: | Doppler carrier phase-rate GPS differential velocity measurement Kalman filter |
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