Common problems and solutions in the use of instrument calibration points in high-precision ground magnetic surveys in the field
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摘要: 地面高精度磁测野外工作中,利用仪器校正点了解一个闭合观测单元内仪器性能是否正常,是保证数据采集质量的重要环节。但由于有些工作者未能了解仪器校正点的正确使用方法,造成仪器的早、晚校正测量工作没有起到对当天仪器工作状态的监控作用,影响了高精度磁测数据采集的质量。本文通过具体实例分析,提出在检查仪器的早、晚校正测量结果时,不但应关注早、晚校正测量结果之间的差值,还应检查早、晚校正测量结果与仪器校正点实际磁场值之间的差值,以保证野外高精度磁测数据采集的质量。Abstract: To ensure the high quality of data acquisition in high-precision ground magnetic surveys in the field, it is an important link to ascertain the instrument performance in a period using instrument calibration points. However, some workers fail to properly use instrument calibration points and thus fail to monitor the operation state of instruments on a day through the early and late calibration measurement of the instruments, affecting the acquisition of high-precision magnetic survey data. Based on the analysis of specific examples, this study proposed that the checking of early and late calibration measurement results of instruments should consider both the differences between these results, as well as the differences between these results and the actual magnetic field values of instrument correction points. The purpose is to ensure the high-quality field acquisition of high-precision magnetic survey data.
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Key words:
- high-precision magnetic survey /
- field work /
- instrument calibration point /
- usage /
- solution /
- data quality
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