A Detection Method for Irregularity of Ionospheric delay in Network RTK Environment

네트워크 RTK 환경에서 이온층 지연 변칙현상 검출 기법

Ko, Jaeyoung;Shin, Mi Young;Han, Younghoon;Cho, Deuk Jae

  • Received : 2015.09.23
  • Accepted : 2015.10.28
  • Published : 2015.11.30


This paper proposes a detection method for irregularity of ionospheric delay in network RTK (Real Time Kinematic) Environment. The linearity of network RTK correction provided to user can't be assured when a characteristic of temporal-spatial of ionospheric delay is rapidly changed due to geomagnetic storm or solar flare. Therefore, incorrect ambiguity can be resolved and positioning error can be increased. A detection method for irregularity of ionospheric delay is needed to provide reliable correction. In this paper, index to detect irregularity of ionospheric delay is calculated from dispersive corrections and occurrence of irregularity is judged by comparing index and thresholds.


Network RTK;Irregularity of ionospheric delay;GNSS integrity monitoring;Geomagnetic storm


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Supported by : Ministry of Land, Infrastructure and Transport