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四、已知兩點之 TWD97 坐標為 A(EA, NA)及 B(EB, NB),假設已知點坐標均無誤差,若架設全測站儀於 A 點,擬以極坐標法測算未知點 C 之平面坐標,觀測得 AC 之水平距離為 L,
問題詳情
四、已知兩點之 TWD97 坐標為 A(EA, NA)及 B(EB, NB),假設已知點坐標均無誤差,若架設全測站儀於 A 點,擬以極坐標法測算未知點 C 之平面坐標,觀測得 AC 之水平距離為 L,觀測精度(標準誤差)為 σL,並測得順時鐘方向之∠BAC 水平角 θ,觀測精度為 σθ。請列式說明如何計算 C 點平面坐標及其標準誤差。(20 分)
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