네트워크 RTK를 위한 기준국에서의 무결성 감시 기법

Abstract

Network RTK is a precise positioning technique using CPC from reference stations within the network, and is constantly being researched for improved accuracy. However, researches for network RTK integrity monitoring have not been sufficiently studied, because network RTK has been mainly used on surveying for static or kinematic positioning. Recently, network RTK has been considered for dynamic navigation users requiring precise positioning performance, as well as surveying. Thus, researches for network RTK integrity monitoring are necessary. This paper presents an integrity monitoring technology that is adequate to network RTK. Anomaly detection algorithms are proposed to detect an abnormal signal caused by a faulty satellite, or by an irregular ionospheric or tropospheric characteristic between reference stations. The proposed anomaly detection algorithms are verified on an anomaly-free case, and represented real anomalous cases.