Dr. Zhongmiao Sun is a professor in Xi'an Research Institute of Surveying and Mapping. He obtained his PhD degree in Information and Engineering Universitiy in 2004. His main research interests include airborne gravimetry, satellite altimetry, time-space datum, etc. He is also a professor at Information and Engineering Universitiy, China, and Changan Universtiy, China. He has published more than 100 papers in many peer-reviewed journals and conferences as the main author or co-author, more than 50 of them were searched by EI / SCI. He has also already authored two book. He has won more than twenty national or provincial science and technology awards.

Dr. Xiaogang Liu is a associate professor in Xi'an Research Institute of Surveying and Mapping. He obtained his PhD degree in Information and Engineering Universitiy in 2011. His main research interests include airborne gravimetry, satellite gravimetry, geomagnetic measurement, etc. He has published more than 100 papers inmany journals and conferences as the main author or co-author, more than 30 of them were searched by EI / SCI. He has also already authored two book. He has won more than ten provincial science and technology awards.

Dr. Fumei Wu is a associate professor in Xi'an Research Institute of Surveying and Mapping. She obtained her PhD degree in Information and Engineering Universitiy in 2010. Her main research interests include inertial navigation, time-space datum, etc. She has published more than 80 papers in many peer-reviewed journals and conferences as the main author or co-author, more than 40 of them were searched by EI / SCI. She has also already authored one book. She has won more than ten national or provincial science and technology awards.

Miss Yixuan Sun is a tutor in Zhongshan University. She obtained her master degree in Beijing University of Aeronautics and Astronautics in 2021. Her main research interest is satellite navigation. She has published several papers in many peer-reviewed journals and conferences as the main author or co-author. She has also already authored one book.