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粗大误差产生的原因既有测量人员的主观因素,如读错、记错、写错、算错等,又有环境干扰的客观因素,如测量过程中突发的机械振动,温度的大幅度波动,电源电压的突变等,使测量仪器示值突变,产生粗大误差。此外,使用有缺陷的计量器具,或者计量器具使用不正确,也是产生粗大误差的原因之一。含有粗大误差的测量结果视为离群值,按数据统计处理
The reason for the gross error is not only the subjective factors of the surveyors, such as reading the wrong, remembering the wrong, wrong, calculating the wrong, there are objective factors of environmental interference, such as sudden mechanical vibration in the measurement process, temperature fluctuations , The sudden change of the power voltage, etc., Make the measuring instrument change suddenly, have gross error. In addition, the use of defective measuring instruments, or measuring instruments used incorrectly, is also one of the causes of gross errors. Measurement results that contain gross errors are treated as outliers and are processed by data statistics