Abstract: Aiming at the construction and operation problems of the high-precision reference stations of the BeiDou Navigation Satellite System in GDCORS, an integrated BeiDou high-precision service station design scheme based on domestic board cards is proposed. The service station consists of a host and a pole. The integrated structure design is convenient for installation and maintenance, and can independently receive the signal of the BeiDou Navigation Satellite System. It has an independent power supply system and adopts a dual hot backup system, single BeiDou positioning, commercial cryptography and other designs to improve the reliability, fault tolerance and security application of the system. Through zero-baseline analysis of the observation data of the service station host and the comparative receiver for precise point positioning (PPP), the results show that the single BeiDou positioning mode precision of the service station host is equivalent to the positioning precision of the GPS system, which meets the design requirements. The research results can be applied to the construction of additional reference stations in the eastern, western and northern mountainous areas of Guangdong as well as in coastal and island areas, effectively reducing the construction cost and operation difficulty, and improving the ability of the system to run continuously and stably.

Key words: integrated BeiDou high-precision service station, dual hot backup, single BeiDou positioning, commercial cryptography, precise point positioning