Evaluation of the external coincidence precision of the aeromagnetic survey system

WANG Yun-Peng; LIU Xiao-Gang; QIU Xue-Feng; SONG Ying

doi:10.11720/wtyht.2023.2682

2023 Vol. 47, No. 1

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WANG Yun-Peng, LIU Xiao-Gang, QIU Xue-Feng, SONG Ying. 2023. Evaluation of the external coincidence precision of the aeromagnetic survey system. Geophysical and Geochemical Exploration, 47(1): 129-134. doi: 10.11720/wtyht.2023.2682

Citation:

WANG Yun-Peng, LIU Xiao-Gang, QIU Xue-Feng, SONG Ying. 2023. Evaluation of the external coincidence precision of the aeromagnetic survey system. Geophysical and Geochemical Exploration, 47(1): 129-134. doi: 10.11720/wtyht.2023.2682

Evaluation of the external coincidence precision of the aeromagnetic survey system

1. State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China；
2. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China；
3. Unit 61365, Tianjin 300140, China

Received Date: 20 December 2021

Revised Date: 20 February 2023

Publish Date: 24 February 2023

Abstract

Abstract

The precision evaluation of an aeromagnetic survey system is an important part of a magnetic survey. This study obtained airborne and ground magnetic data through flight experiments in a certain survey area of Inner Mongolia. Then, the high-precision ground magnetic survey data was upward-continued to the height of the flight course using the interpolation-iteration and equivalent source methods. Finally, the external coincidence precision of the aeromagnetic survey system was evaluated by comparison with the aeromagnetic survey data. The precision evaluation results of the two continuation methods are better than 5 nT, reflecting the actual precision level of the aeromagnetic survey system. Therefore, the research methods in this study can provide references for the evaluation of the external coincidence precision of an aeromagnetic survey system and can also be used for online calibration of the scale factor, deviation, and other parameters of newly developed aerial magnetometers.
- aeromagnetic survey system /
- ground magnetic survey /
- precision evaluation /
- interpolation-iteration method /
- equivalent source method /
- upward continuation

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References

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