Design of Software DGNSS Reference Station and Integrity Monitor for Maritime Service

Abstract

This paper focuses on the design of the software RSIM for enhanced maritime DGNSS operation and its service. First of all, it describes the architecture of RS and IM system, and analyzes the performance requirements of RTCM SC-104 document. In order to achieve this study, this paper designs the software DGNSS RSIM architecture, operational module for control and monitor of GNSS receivers, module for generating the differential corrections and converting to RTCM format, and it then broadcasts the differential corrections to user receivers using MSK modulator. For the performance requirements of the proposed software RSIM, the pseudorange (PR) measurement, the pseudorange corrections (PRCs) and position accuracy are presented in the interest of the performance analysis of the software RSIM. And it then analyzes the functionality of maritime DGNSS integrity monitoring and the key components for generation IM information. Finally, this paper presents the performance analysis results of the proposed software DGNSS RSIM.