e-GNSS即時動態定位衛星定位儀校正系統實務作業探討

The Practice Discussion of e-GNSS Rover Receiver Calibration

內政部國土測繪中心為提升國內測繪技術，自93年開始研究建置電子化全球衛星（Electronic Global Navigation Satellite System, e-GNSS）即時動態定位系統，為全國之首亦為東亞地區先驅，95年完成臺灣本島及澎湖金馬等地區e-GNSS即時動態定位系統建置，並於98年正式開始營運，提供國內測繪業一個優質測繪環境，提高作業效能。
國土測繪中心97年成立「測量儀器校正實驗室」（Surveying Instrument Calibration Laboratory, SICL），建立符合國際認證規範ISO/IEC 17025之品質管理系統，於99年3月10日通過財團法人全國認證基金會（Taiwan Accreditation Foundation, TAF）認證，至108年已提供「電子測距儀」、「經緯儀」、「衛星定位儀」、「航空測量攝影機」、「空載光達」及「小像幅航拍攝影機」等校正項目服務。考量國土測繪中心e-GNSS系統即時動態定位系統已提升為多星系服務，許多使用者利用該系統辦理測量業務，為協助使用者確保測量成果品質，遂於108年著手建置「e-GNSS即時動態定位衛星定位儀校正系統」，並於109年通過TAF增項認證，110年訂定收費標準正式營運，從109年營運迄今，已完成超過200部e-GNSS儀器校正作業。
本文介紹「e-GNSS即時動態定位衛星定位儀校正系統」發展歷程，另希望藉由累積至目前的校正數據資料進行統計分析，提供除了校正結果以外，更多的實務作業參考資訊及建議。

The National Land Surveying and Mapping Center (NLSC) deployed the e-GNSS real-time kinematic positioning system in 2009, which is an application of network RTK technology and has provided a high-quality positioning service for the surveying industry and improved working efficiency in Taiwan.
The NLSC also built the Surveying Instrument Calibration Laboratory (SICL) in 2008, which complies with ISO/IEC 17025 and was certified by the Taiwan Accreditation Foundation (TAF) on March 10, 2010. By now, the SICL had provided many surveying instrument calibration services. Considering the e-GNSS real-time kinematic positioning system service is used for all kinds of surveying work in Taiwan, the SICL added the e-GNSS rover receiver calibration in 2020 to ensure the quality of surveying results and is open for operation in 2021. More than 200 e-GNSS rover receivers have been calibrated since then. This article introduces the development of the e-GNSS rover receiver calibration system, and hopes to provide more practical experiences and suggestions by analysing calibration data.