대한공간정보학회지 (Journal of Korean Society for Geospatial Information Science)
- 제4권2호
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- Pages.15-22
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- 1996
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- 1598-2955(pISSN)
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- 2287-6693(eISSN)
GPS 상대측위에 의한 기선 정확도 분석
Analysis of Baseline Accuracy by GPS Relative Positioning
- 발행 : 1996.12.31
초록
국토의 효율적 개발과 이용을 위해 정확한 지형정보가 절실히 요구되고 있는 요즈음, 국내에서는 GPS의 응용에 많은 관심이 모아지고 있으며 그 실용화를 위한 여러 가지 기초적인 연구가 수행되고 있다. 본 연구에서는 기선거리
As the exact geographical information has been nowadays required for effective developing and using of national land, in the country, there has been interested in using of GPS, and its practical use is expected. Various kinds of fundamental research for practical use of GPS is being accomplished. In this study, a test was carried out over 9 stations with baseline of the range of 1.5 to 210km, and the accuracy of baseline length by GPS relative positioning was variously considered. As result of this study, using a GPS receiving L1 frequency only, baseline accuracy for 2 hour observation was of the order of 0.3ppm for the 10km, and for I hour was below 1ppm. Using a GPS receiving dual frequency(L1/L2), baseline accuracy was of the order of 0.3ppm for the 100km to 200km as 3 hour observation using double difference methods by carrier phase. With basic on the result of this study, when observation and baseline processing are proceeded by the selected optimum observation time and using of baseline processing method, we can expect that geographical information will be acquired effectively.
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