| ??????λ???α??????????????GPS?????λ |
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| 引用本文： | 周泽波,沈云中,李博峰.??????λ???α??????????????GPS?????λ[J].大地测量与地球动力学,2008,28(3):59-63. |
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| 作者姓名： | 周泽波 沈云中 李博峰 |
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| 作者单位： | 1. 同济大学测量与国土信息工程系,上海,200092
2. 同济大学测量与国土信息工程系,上海,200092;现代工程测量国家测绘局重点实验室,上海,200092 |
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| 摘 要： | ??????GPSα?????λ???????????辡??????????????????????????????????????????λ?????????λ???α???????????????????????????????????????????????????????????????????????????????GPS??????????б??????????????λ???α???С??α????????????????λ????????????????????????????????????????????λ??????????
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| 关 键 词： | ????????λ ??λ???α?? ?????? ???????????? ??λ???? |
| 文章编号： | 1671-5942(2008)03-0059-06 |
| 修稿时间： | 2008年3月14日 |
GPS KINEMATIC POSITIONING BASED ON PHASE SMOOTHING PSEUDO-RANGE AND DOPPLER DATA |
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| Zhou Zebo,Shen Yunzhong,Li Bofeng.GPS KINEMATIC POSITIONING BASED ON PHASE SMOOTHING PSEUDO-RANGE AND DOPPLER DATA[J].Journal of Geodesy and Geodynamics,2008,28(3):59-63. |
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| Authors: | Zhou Zebo Shen Yunzhong Li Bofeng |
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| Institution: | 1)Dept. of Surveying and Geo-informatics, Tongji University, Shanghai 2000922)Key Lab. of Advanced Surveying Engineering of SBSM, Shanghai 200092 |
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| Abstract: | In order to improve the positioning accuracy and reliability,it is necessary to use information from neighboring epodes or other kinds of possible measurements.On the basis of the analysis of function model and stochastic model in a chosen time window the extended Kalman filtering(EKF) recursive equations for in the cases with and without Doppler measurements were derived and compared with each other by use of real vehicular GPS data.The result shows that the PSP can indeed reduce the measurements noise and thus improve the positioning accuracy,while the EKF with Doppler measurements can significantly enhance the accuracy and reliability in elevation component. |
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| Keywords: | GPS phase smoothing pseudo-range Doppler extended Kalman filter positioning accuracy |
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