Analysis and Accuracy Assessment of Standalone Velocity Determination Methods with BDS Receivers

Abstract

To analyze the accuracy of the standalone velocity determination methods with BDS (Bijou Navigation System) receivers, three standalone velocity determination methods were selected, which were position difference velocity determination method, raw Doppler velocity determination method and carrier-phase derived Doppler velocity determination method. Results of the three velocity determination methods in static mode and dynamic mode were analyzed respectively. The results of the experiments are shown as follows. The accuracy of the three velocity determination methods were 0.58 m/s, 0.04 m/s and 0.022 m/s respectively using TRIMBLE NETR9 receiver in static mode. The accuracy of the three velocity determination methods were 0.16 m/s, 0.06 m/s and 0.02 m/s respectively using unbox M8T receiver in static mode, while using the self-developed navigational receiver in dynamic mode, the results were 2.30 m/s, 0.29 m/s and 0.07 m/s respectively. Carrier-phase derived Doppler velocity determination method achieved the highest accuracy level in both static mode and dynamic mode. The same velocity determination method achieved different levels of accuracy in different modes.