The paper demonstrates a method to reconstruct the Earth's gravitational field using satellite gradiometry, indicating advanced measurement techniques for precise data analysis.
Key Points
This research aims to explore the principles of measuring the Earth's global gravitational field using satellite technology.
Utilized a high-precision three-axis gravity gradiometer on a low Earth orbit spacecraft.
Employed a GNSS receiver for accurate orbit measurements necessary for EGF analysis.
Developed a numerical integration program for spacecraft orbit considering various forces.
Compiled a matrix of equations related to Stokes coefficients for EGF reconstruction.
Used the least squares method to correct EGF model harmonics based on model measurements.
Successfully reconstructed the Earth's gravitational field harmonics from the EGF model.
Achieved agreement in amplitude differences between the reconstructed and EGM2008 models.
Selected an optimal spacecraft orbit for efficient gradiometric measurements.
Estimated accuracy characteristics for key instruments on the spacecraft.