Modeling and simulation on GNSS vector tracking loop based on extended kalman filter

作者：Zeng Guangyu; Shen Qiang; Li Dongguang; He Xin

来源：Acta Armamentarii, 2015, 36(3): 530-538.

DOI：10.3969/j.issn.1000-1093.2015.03.022

• Extended Kalman filter
• Modeling
• Ordnance science and technology
• Satellite positioning
• VDFLL
• Vector tracking

Considering a limited public information about analysis of GNSS vector tracking algorithm control process, a vector delay/frequency lock loop (VDFLL) tracking model is established, and a derivation on the model's linearization process is proposed. The sequential control logic of vector tracking algorithmis analyzed. For the fact that VDFLL cannot lock the carrier phase, a message demodulation mode based on series phase-locked loop (PLL) is put forward. And a vector VDFLL model is implemented on the platform of a software receiver. The simulation results indicate that the controlling model not only can output correct and optimal estimate for receiver state information, but also has an excellentdynamic tracking performance.

• 出版日期2015
• 单位北京理工大学