Observation Data Quality Evaluation of GPS Receiver on Agile Platform Based on Ground Simulation

In this paper, the observation data quality of GNSS receiver on agile platform is analyzed and evaluated by the ground semi physical simulation method, which has important reference significance for analyzing the navigation data measured in orbit after the launch of agile platform mission. According to three different observation conditions, the simulation of observation value is carried out by using Spirent signal simulator. According to the characteristics of the simulation observations, this paper proposes to use the observation combination without geometric distance to analyze the simulation pseudo range and phase observation accuracy, and according to this, three groups of different simulation data are processed and evaluated. In addition, the geometry orbit determination is carried out by using pseudo range and phase observations respectively, and the accuracy level of the orbit determination is analyzed. The accuracy of the observations is analyzed based on the residual of the observations.