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测量2m 以上连续表面最准确的方法是自准直法,然而它却有许多不足之处。例如:需要两人参加测量;测量结果需要进行繁重而熟练的数学处理;被测表面轮廊线仅能由坐标为铡量步距整数倍的一些孤立点来确定;测量结果带有操作人员的主观误差。只有使测量过程以及测量信息的记录和处理实现自动化,才能消除上述缺点,保证自准直法的高准确度。全苏门捷列夫计量科学研究院(ВНИИМ)
The most accurate method of measuring a continuous surface above 2 m is self-collimation, however it has many disadvantages. For example, two people are required to participate in the measurement. The measurement result requires heavy and proficient mathematical processing. The measured surface corridor line can only be determined by some isolated points whose coordinate is an integral multiple of the measurement step. The measurement result includes an operator Subjective error. Only by automating the recording and processing of the measurement and measurement information can the above disadvantages be eliminated and the high accuracy of the self-alignment method ensured. Quan Su Men Leviv Institute of Metrology (ВНИИМ)