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首页> 外文期刊>Surveys in Geophysics: An International Review Journal of Geophysics and Planetary Sciences >Sensitivity Analysis for Key Payloads and Orbital Parameters from the Next-Generation Moon-Gradiometer Satellite Gravity Program
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Sensitivity Analysis for Key Payloads and Orbital Parameters from the Next-Generation Moon-Gradiometer Satellite Gravity Program

机译：下一代月球梯度仪卫星重力程序对关键有效载荷和轨道参数的灵敏度分析

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摘要

This research principally focuses on the requirements analysis in terms of the next-generation Moon-Gradiometer satellite gravity program. Firstly, the new single and combined analytical error models applied to estimate the accuracy of the lunar gravitational field (e.g., geopotential coefficients, cumulative geoid height and cumulative gravity anomaly) influenced by the main error sources consisting of the satellite gravity gradient and satellite orbital position are created for the next-generation Moon-Gradiometer program. Secondly, the dependability of the new single and combined analytical error models is validated by the conformity of the cumulative lunar geoid height errors between the gravity gradient and orbital position. Finally, taking the current GRAIL (Gravity Recovery and Interior Laboratory) satellite gravity mission for reference, the sensitivity analysis for the next-generation Moon-Gradiometer gravity satellite system is comprehensively carried out. We propose to equip this with the new-type pivotal payloads of the lunar spacecraft comprising the electrostatic suspension gravity gradiometer and the drag-free control system and bring forward the matching measurement precision of the space-borne instruments (involving 3 x 10(-12)/s(2) in the gravity gradient and 60 m in the orbital position) and the preferred orbital parameters (including an orbital altitude of 25 km, an observation period of 28 days and a sampling interval of 1 s) in the next-generation Moon-Gradiometer program.
机译：这项研究主要集中在下一代月球-梯度仪卫星重力程序方面的需求分析。首先，新的单一和组合分析误差模型用于估算受卫星重力梯度和卫星轨道位置等主要误差源影响的月球重力场的精度（例如，地势系数，累积大地水准面高度和累积重力异常）。是为下一代月球梯度仪程序创建的。其次，通过重力梯度和轨道位置之间累积的月球大地水准面高度误差的一致性，验证了新的单一和组合分析误差模型的可靠性。最后，以当前的GRAIL（重力恢复和室内实验室）卫星重力任务为参考，全面进行了下一代月球-梯度仪重力卫星系统的灵敏度分析。我们建议为此配备包括静电悬浮重力梯度仪和无阻力控制系统的新型月球飞行器有效载荷，并提出与航天器相匹配的测量精度（涉及3 x 10（-12 ）/ s（2）（在重力梯度中为60 m的轨道位置）和首选的轨道参数（包括25 km的轨道高度，28天的观察期和1 s的采样间隔），生成月球-梯度仪程序。

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