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중력이상을 이용한 INS 결합항법 시스템의 성능 분석 : Performance Analysis of Integrated Inertial Navigation System Using Gravity Anomaly
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- Authors
- Issue Date
- 2010-08-03
- Publisher
- 국방과학연구소
- Citation
- 국방과학연구소 창설 40주년 기념 종합학술대회집, pp. 295-298
- Keywords
- Gravity Aided INS ; Gravity Anomaly ; EKF ; DBRN
- Abstract
- To overcome accumulated error of INS in non-GNSS environment, we propose EKF based integrated INS architecture, which can
estimate INS position error, using gravity anomaly data. In this architecture, the gravity anomaly database is used to construct Kalman
filter measurement matrix and gravity anomaly data is measured by gravity gradiometer in real time. In order to verify the
performance of the proposed integrated INS, a simulation has been carried out by using a 30arcsec x 30arcsec gravity anomaly
database in South Korea area. The results show that gravity anomaly data can be used to correct the drifting error in the INS whose
errors are accumulated over time.
- Language
- Korean
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