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Measurement of Spatial Stability in Precision Grip
Published on: June 4, 2020
地球表層の変形に関するグローバルポジショニングシステムの測定:精度と精度
まとめ
グローバル・ポジショニング・システム (GPS) の測定は高精度で,垂直コンポーネントの不確実性は短距離で10〜20mmまで低くなっています. 精度はより長いベクトルでも維持され,ジオデシカルアプリケーションのためのGPSの信頼性を実証しています.
科学分野:
- ジオデシ (Geodesy) とは
- 地質物理学 地質物理学とは地質物理学です.
- 衛星ナビゲーション 衛星ナビゲーション
背景:
- 精密な位置付けは,科学や工学の様々な用途において極めて重要です.
- グローバル・ポジショニング・システム (GPS) 技術は,地質測定のための強力なツールを提供します.
- GPSの精度と限界を理解することは,信頼性の高いデータ解釈に不可欠です.
研究 の 目的:
- 位置差ベクトルのグローバルポジショニングシステム (GPS) 測定の精度を定量化するために.
- 測定不確実性がベクトル長度によってどのように変化するかを評価する.
- GPSで得られた距離を,他の測地計測器から得られた距離と比較する.
主な方法:
- GPSの繰り返し観測した位置差ベクトルを分析した.
- 北,東,垂直コンポーネントの標準偏差が計算されました.
- GPS測定は,Geodoliteと非常に長いベースライン干渉測定 (VLBI) データでクロス検証されました.
主要な成果:
- 11kmまでのベクトルの標準偏差は4mm (北),6mm (東),10-20mm (垂直) でした.
- 不確実性はベクトルの長さとともに徐々に増加し,225kmでは標準偏差が6mm (北),11mm (東),40mm (垂直) であった.
- GPS測定は,Geodolite (10-40 km) と 0.2 ppm,VLBI (225 km) と 0.05 ppm の範囲で一致しました.
結論:
- GPSは,地質学的アプリケーションに高度に正確で正確な測定を提供します.
- GPSの性能は,さまざまなベクトル長度で堅実です.
- GPS測定は,他の高精度地質測定技術と一致しています.
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