The precision of airborne gravimetry under the condition of long baselines
Li Rui1,2(), Shu Qing1,2, Luo Yao1,2, Wang Chen-Yang1,2, Gao Wei1,2, Zhou Jian-Xin1,2()
1. Key Laboratory of Airbome Geophgsics and Remote Resources,Ministry of Natural Resources,Beijing 100083,China 2. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China
It is difficult to set up GPS base stations for airborne gravimetry in offshore and far seas, leading to long baselines. Given this, this study analyzed the impacts of long baselines on the precision of airborne gravimetry based on the principle of airborne gravimetry and the real measurement data. Moreover, this study comprehensively analyzed the effects of long baselines on differential positioning precision and evaluated the internal coincidence precision of airborne gravity anomaly. Compared to the precision required for airborne gravimetry, it is believed that long baselines (600-800 km) have limited and almost negligible impacts on the precision of airborne gravimetry. This study can provide technical support for further development of airborne gravimetry in offshore and far seas.
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Li Rui, Shu Qing, Luo Yao, Wang Chen-Yang, Gao Wei, Zhou Jian-Xin. The precision of airborne gravimetry under the condition of long baselines. Geophysical and Geochemical Exploration, 2022, 46(4): 955-960.
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