| 지상파 DMB 기반 DGPS 서비스 측위 정확도 평가 |
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김혜인, 김지혜, 김군택, 박관동, 김두식 |
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| Accuracy Evaluation of DGPS Service via Terrestrial Digital Multimedia Broadcasting |
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Hye-In Kim, Jihye Kim, Koon-Tack Kim, Kwan-Dong Park, Dusik Kim |
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| Abstract |
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As of 2012, for service-area-widening and commercialization of DGPS service, the Ministry of Land, Transport and Maritime Affairs has completed a DGPS service via Terrestrial Digital Multimedia Broadcasting and doing experimental broadcasting. In this study, kinematic positioning tests were conducted based on DGPS service via T-DMB using low-cost GPS equipments in a dynamic environment. Standalone GPS, single-reference NDGPS via NTRIP, and virtual-reference DGPS via T-DMB surveys were conducted at the same time. And horizontal positioning errors were computed by comparing them with the result of high-precision positioning. As a result, when the DMB transmission interval was 3 seconds, horizontal positioning errors of standalone GPS, NTRIP-DGPS, and DMB-DGPS were 2.3m, 1.0m, and 0.7m, respectively. When the interval was 1 second, horizontal positioning errors were 2.0m, 1.2m, and 0.8m, respectively. Thus horizontal positioning accuracies improved with the DMB-DGPS compared to the traditional single-reference NDGPS. |
| Key Words:
DGPS;T-DMB;Kinematic Positioning;Positioning Accuracy;baseline |
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