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홍신표(Sin-pyo Hong),이만형(Man-Hyung Lee),전호환(Ho-Hwan Chun),권순흥(Sun-Hong Kwon) 한국자동차공학회 2003 한국자동차공학회 지부 학술대회 논문집 Vol.2003 No.10
This paper presents car test results to estimate alignment errors in the integration of a low-grade inertial measurement unit (IMU) with accurate Global Positioning System (GPS) measurement systems. Car tests were conducted with a low-cost IMU made with micro-electro-mechanical system (MEMS) technology and carrier-phase differential GPS measurement systems. Test results confirmed that the angular motion of the test car improves the estimation of the lever arm between the GPS antenna and IMU. They also showed that changes in acceleration improve the estimation of the relative attitude between the reference frames of a GPS antenna array and IMU. The lever arm was estimated with a ten-centimeter error. The relative attitude was estimated with a half-degree error. An iterative scheme was used to estimate the alignment errors during post-processing. The scheme was shown to be useful when the test car could not have sufficient changes in motion due to limitations in its path. With the given set of test data, the estimation error decreased as the number of iterations increased.<br/>
친환경 세라믹 고분자 수지 모르타르의 주차장 표면 마감의 재료적 특성에 관한 실험적 연구
손종만 ( Son Jung Man ),최은규 ( Choi Jun Kyu ),이신춘 ( Lee Sin Chun ),곽규성 ( Kwak Kyu Sung ),오상근 ( Oh Sang-keun ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.2
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