Development of the fine lunar gravity field modeling with digital elevation model
Yang Meng
Zhang Baoyu
Yan Xingyuan
Li Yuan
Zhang Wuming
Zhong Min
Feng Wei
Abstract：The fine modeling of the lunar gravity field is a fundamental task for establishing lunar altitude refe-rences,conducting research on lunar interior structure,and other scientific endeavors.The lunar gravity field mod-el constructed solely based on spacecraft orbit data has limited spatial resolution,making it challenging to meet the demands of fine gravity field research.The acquisition of high-resolution terrain models presents new opportuni-ties for the study of precise lunar gravity fields.This paper reviews the current status and advancements in fine lu-nar gravity field modeling,including research efforts and evaluation methods for global lunar gravity field models,principles and technologies for fine gravity field modeling,as well as related research outcomes.On this basis,this paper systematically summarizes the key theoretical issues and technical challenges in the theory of lunar gravity field modeling based on high-resolution terrain models.These include data updating,error correction in high-fre-quency gravity field modeling,calculation efficiency,and the series divergence problem in spherical harmonic ana-lysis.In addition,future research directions are discussed.This work will provide references for gravity field re-search on the Moon and other terrestrial planets.
Keywords：lunar gravity fielddigital elevation model(DEM)residual terrain modeling(RTM)evaluation of gravity field model
Publication Date：2024-09-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 513-523 )