Nonlinear Tracking-Differentiator for Velocity Determination Using Carrier Phase Measurements

被引:46
作者
Tang, Yonggang [1 ]
Wu, Yuanxin [2 ]
Wu, Meiping [2 ]
Hu, Xiaoping [2 ]
Shen, Lincheng [2 ]
机构
[1] AF Acad, Guilin 541003, Peoples R China
[2] Natl Univ Def Technol, Dept Automat Control, Coll Mechatron & Automat, Changsha 410073, Hunan, Peoples R China
基金
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词
Beidou; carrier phase; Global Positioning System (GPS); nonlinear tracking-differentiator; velocity determination; MOTION CONTROL; POSITION;
D O I
10.1109/JSTSP.2009.2024591
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Differential computation is necessary in velocity determination using carrier phase measurements from the Global Navigation Satellite System (GNSS). A method of nonlinear tracking-differentiator is proposed to suppress both noise amplification and time delay introduced by differentiation. The carrier phase rate can be derived more precisely using the nonlinear tracking-differentiator and the time delay is compensated by second-order derivative estimation from the outputs of the differentiator. Simulation and experiments for the Global Positioning System (GPS) and Chinese Beidou system show that this approach can effectively improve the accuracy of velocity determination, especially under noisy or bad geometry situations.
引用
收藏
页码:716 / 725
页数:10
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