解析度與精度

On the Resolution and Accuracy

解析度乃指量測時所能達到之最小分辨程度，精度乃指所量測之量與真值間之差異。兩者間有相當高之相關性，但是並不等同。本文由基礎之名詞定義出發，探討解析度與精度之意涵。並針對測量工作中常見基本量測量之觀測方式，探討解析度與精度之差異，包含游標、複測角法、與重複觀測等。由探討中展示，一般之重複觀測，僅能提升精度，而並非解析度。 Resolution is the degree to which nearly equal values of a quantity can be discriminated.Accuracy is the degree of conformity of a measure to a standard or true value. These two terms areclosely related, but not identical. This paper studies the meaning of these two terms with somemeasuring methods used in surveying. Namely, the vernier, the repetition angle measuring method, and the repetition observation methods, are analyzed. It is illustrated that generally the repetitionschemes of observation can only improve the accuracy, not the resolution.

Resolution is the degree to which nearly equal values of a quantity can be discriminated.Accuracy is the degree of conformity of a measure to a standard or true value. These two terms areclosely related, but not identical. This paper studies the meaning of these two terms with somemeasuring methods used in surveying. Namely, the vernier, the repetition angle measuring method,and the repetition observation methods, are analyzed. It is illustrated that generally the repetitionschemes of observation can only improve the accuracy, not the resolution.