Detection algorithm of ionospheric delay anomaly based on multi-reference stations for ionospheric scintillation

• 발행기관: 한국항해항만학회
• 저자명: Yunja Yoo Deuk-Jae Cho Sang-Hyun Park Mi-Young Shin
• 간행물 정보: 『한국항해항만학회지』제35권 제9호, 701~706쪽, 전체 6쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2011.12.31

영문 초록

Radio waves including GPS signals, various TV communications, and radio broadcasting can be disturbed by a strong solar storm, which may occur due to solar flares and produce an ionospheric delay anomaly in the ionosphere according to the change of total electron content. Electron density irregularities can cause deep signal fading, frequently known as ionospheric scintillation, which can result in the positioning error using GPS signal. This paper proposes a detection algorithm for the ionosphere delay anomaly during a solar storm by using multi-reference stations. Different TEC grid which has irregular electron density was applied above one reference station. Then the ionospheric delay in zenith direction applied different TEC will show comparatively large ionospheric zenith delay due to the electron irregularity. The ionospheric slant delay applied an elevation angle at reference station was analyzed to detect the ionospheric delay anomaly that can result in positioning error. A simulation test was implemented and a proposed detection algorithm using data logged by four reference stations was applied to detect the ionospheric delay anomaly compared to a criterion.

목차

Abstract

1. Introduction

2. Detection algorithm for the ionospheric delay anomaly

3. Results and Discussion

Conclusion

Acknowledgements

References

키워드

GPS anomaly solar storm ionospheric delay anomaly integrity monitoring