| Citation: | LI Bowen, YU Baoguo, ZHANG Bo, et al. Simulation of GNSS CV signal based on channel multiplexing method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(7): 1406-1414. doi: 10.13700/j.bh.1001-5965.2018.0631(in Chinese)
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In the application of global navigation satellite system (GNSS) common view (CV) technology, the simulation of the GNSS CV signal is needed to reduce the cost of testing the CV receiver and the CV algorithm. For this reason, a channel multiplexing method of signal simulation of GNSS CV signal is proposed. First, the principle of GNSS CV technology is analyzed. The GNSS CV signal simulation method based on GNSS direct signal simulator was designed, and the possible errors in the process of CV signal transmission were analyzed. Finally, the CV signal of the simulation under zero base line, short base line and long base line, as well as the experimental data collected by an experiment were verified and analyzed. The result of verification shows that the simulated GNSS CV signal is located accurately and the positioning accuracy is in meter level. The result of CV comparison shows that the accuracy of root mean square (RMS) is better than 12 ns. The time transfer of CV method can be carried out, which proves that the proposed CV signal simulation method can be effectively used to generate GNSS CV signal. It has certain theoretical reference significance and practical application value for the development of GNSS CV signal simulator and CV receiver and for the study of CV algorithm.
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