Elimination of steering difference in aeromagnetic gradient measurement using internal accord accuracy for test repeat line in aeromagnetic survey
Jian LIANG1, Dao-Ze ZHUANG2, Yu-Feng GUO1, Wang YANG1
1. Geophysical Exploration Academy of China Metallurgical Geology Bureau,Baoding 071051,China 2. Bureau of Geology and Mineral Resources Exploration and Development of Xinjiang, Urumqi 830000,China
This paper points out that the previous calculation formula of the accuracy of the airborne gravity and magnetic survey does not conform to the statistical principle. The authors present a new calculating formula, which unifies not only the consistency of multi-instrument precision calculation for gravity and magnetic measurement on ground but also total precision calculation formula for airborne gravity and magnetic measurement using the intersection of survey line and tie line, and can be applied to aeromagnetic gradient measurement to eliminate gradient steering difference and to evaluate the accuracy of the gradient measurement system.
梁建, 庄道泽, 郭玉峰, 杨望. 利用航磁重复线测量内符合精度消除航磁梯度测量中的转向差[J]. 物探与化探, 2018, 42(3): 576-582.
Jian LIANG, Dao-Ze ZHUANG, Yu-Feng GUO, Wang YANG. Elimination of steering difference in aeromagnetic gradient measurement using internal accord accuracy for test repeat line in aeromagnetic survey. Geophysical and Geochemical Exploration, 2018, 42(3): 576-582.
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