大地测量与地球动力学2026，Vol.46Issue(3)：281-289,9.DOI:10.14075/j.jgg.2025.03.107
多类卫星重力梯度仪误差特性及其重力场探测性能
Noise Characteristics and Performance in Gravity Field Detection of Different Satellite Gravity Gradiometers
摘要
Abstract
We numerically simulate the error characteristics and global static gravity field detection performance of cold atom interference(CAI)gradiometer,electrostatic gradiometers(EA,Mi-croSTAR,GOCE),and their combined satellite gravity gradiometers(CAI-EA,CAI-MicroSTAR)in the nadir-pointing mode,and deeply analyze the gravity gradient observation noise contributed by ac-celerometers and angular velocity of satellite rotation at the design level.Based on the simulated gradi-ent observations of near-polar satellite orbits at 200 km and 250 km altitude for 90 d,we analyze the ability of different types of gradiometers and different noise levels in static gravity field inversion.The results show that CAI can significantly reduce low-frequency noise levels.The performance of com-bined gradiometers in gravity field inversion is better than EA,MicroSTAR and GOCE,considering the nominal noise of electrostatic gradiometers and the different noise levels of CAI,and CAI whose noise approximates white noise is better than electrostatic gradiometers in low degree.When the orbit altitude is 200 km and the accuracy of CAI accelerometers is 3.5 × 10-12 m/(s2·√Hz),the cumula-tive geoid errors of CAI-EA,CAI-MicroSTAR and GOCE gradiometers are 2.9 cm,3.2 cm and 3.7 cm at the degree of 300,and the highest degrees which the cumulative geoid error is 1 cm are 250,240 and 225,respectively.关键词
冷原子干涉重力梯度仪/静电悬浮重力梯度仪/重力梯度观测值噪声/静态重力场/重力场反演Key words
cold atom interferometry gravity gradiometer/electrostatic suspension gravity gradiome-ter/gravity gradient observation noise/static gravity field/gravity field inversion分类
天文与地球科学引用本文复制引用
卢辰宇,李建成,徐新禹,赵永奇,郭泽华,刘有建..多类卫星重力梯度仪误差特性及其重力场探测性能[J].大地测量与地球动力学,2026,46(3):281-289,9.基金项目
国家自然科学基金(42388102,42192533,42074019) （42388102,42192533,42074019）
中央高校自主科研项目(2042022dx0001). （2042022dx0001）
