Positioning Performance based on Integrated GNSS Network of Vehicles

GNSS (global navigation satellite systems) constellation is the space communication network for the applications. To further enhance performance, the technologies have been proposed by academics and industries to eliminate errors. In the paper, double-difference and dual-frequency model is proposed for the first time to obtain highly precise positioning and attitude. The results show that the lengths of the measured two baselines both fluctuate within the small range of ±1.5 mm, the measurement error of the horizontal direction is less than 6 mm, and the measurement error of the vertical direction is less than 15 mm. The measured head angle of the triple-antenna of a synchronization transceiver set fluctuates within the range of ±0.13°, and the measured pitch angle and roll angle of the triple-antenna of one synchronization transceiver set fluctuate within the range of ±0.24°. The results are compared and analyzed to verify the integer ambiguity resolution and positioning performance over the double-difference and dual-frequency, particularly for the observable GNSS signal resources, including GNSS satellites and transceivers. This paper can help to recognize that the strategy of space-ground of an integrated GNSS communication network is low-cost, high-reliability, easily-installed and conveniently-maintain in the IoV (Internet of Vehicle) applications.