Performance Evaluation and Requirement Analysis for Chronometric Leveling with High-Accuracy Optical Clocks

The high-precision unification of global height datum has long been a hot issue in the field geodesy. chronometric leveling method originates from gravitational redshift effect general relativity, which may provide new solution for datum. difference between two locations could be measured via frequency comparison optical clocks. We build error model leveling, mainly including measurement systematic clocks, statistical and transmission path fiber when using as carrier. Then, we put forward schemes to achieve leveling. performance different is evaluated. Additionally, considering requirements geodesy, four typical accuracy factors are proposed. Meanwhile, corresponding clocks techniques also given. It important guiding significance related geoscience fields high-accuracy future.