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Noise Characteristics and Performance in Gravity Field Detection of Different Satellite Gravity Gradiometers
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Chenyu LU1, 2, Jiancheng LI2, 3, *, Xinyu XU2, 4, Yongqi ZHAO2, Zehua GUO2, Youjian LIU1, 2
Journal of Geodesy and Geodynamics | 2026, 46(3) : 281 - 289
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Journal of Geodesy and Geodynamics | 2026, 46(3): 281-289
Noise Characteristics and Performance in Gravity Field Detection of Different Satellite Gravity Gradiometers
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Chenyu LU1, 2, Jiancheng LI2, 3, *, Xinyu XU2, 4, Yongqi ZHAO2, Zehua GUO2, Youjian LIU1, 2
Affiliations
  • 1 School of Earth and Space Science and Technology, Wuhan 430072, China
  • 2 School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • 3 Central South University, Changsha 410083, China
  • 4 Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079, China
Published: 2026-03-15 doi: 10.14075/j.jgg.2025.03.107
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We numerically simulate the error characteristics and global static gravity field detection performance of cold atom interference (CAI) gradiometer, electrostatic gradiometers (EA, MicroSTAR, 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 accelerometers and angular velocity of satellite rotation at the design level. Based on the simulated gradient 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 combined 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·$\sqrt{\mathrm{Hz}} $), the cumulative 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.

cold atom interferometry gravity gradiometer  /  electrostatic suspension gravity gradiometer  /  gravity gradient observation noise  /  static gravity field  /  gravity field inversion
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. 大地测量与地球动力学, 2026 , 46 (3) : 281 -289 . DOI: 10.14075/j.jgg.2025.03.107
Chenyu LU, Jiancheng LI, Xinyu XU, Yongqi ZHAO, Zehua GUO, Youjian LIU. Noise Characteristics and Performance in Gravity Field Detection of Different Satellite Gravity Gradiometers[J]. Journal of Geodesy and Geodynamics, 2026 , 46 (3) : 281 -289 . DOI: 10.14075/j.jgg.2025.03.107
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Year 2026 volume 46 Issue 3
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Article Info
doi: 10.14075/j.jgg.2025.03.107
  • Receive Date：2025-03-31
  • Online Date：2026-10-29
  • Published：2026-03-15
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  • Received：2025-03-31
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Affiliations
    1 School of Earth and Space Science and Technology, Wuhan 430072, China
    2 School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
    3 Central South University, Changsha 410083, China
    4 Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079, China
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https://castjournals.cast.org.cn/joweb/ddcl/EN/10.14075/j.jgg.2025.03.107
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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