Highlights We present an integral-based approach to model regional gravitational fields. We test the performance of the upward/downward continuation in the Montes Jura region of the Moon. Realistic regional gravitational fields in Montes Jura are less noisy than the global solutions.
Abstract We present an integral-based approach for high-resolution regional recovery of the gravitational field in this article. We derive rigorous remove-compute-restore integral estimators relating the line-of-sight gravitational acceleration to an arbitrary order radial derivative of the gravitational potential. The integral estimators are composed of three terms, i.e., the truncated integration, the low-frequency line-of-sight gravitational acceleration, and the high-frequency truncation error (effect of the distant zones). We test the accuracy of the integral transformations and of the integral estimators in a closed-loop simulation over the Montes Jura region on the nearside of the Moon. In this way, we determine optimal sizes of integration radii and grid discretisation. In addition, we investigate the performance of the regional integral inversion with synthetic and realistic GRAIL observations. We demonstrate that the regional inversion results of the disturbing gravitational potential and its first order radial derivative in the Montes Jura mountain range are less contaminated by high-frequency noise than the global spherical harmonic models.
Integral inversion of GRAIL inter-satellite gravitational accelerations for regional recovery of the lunar gravitational field
Advances in Space Research ; 65 , 1 ; 630-649
2019-10-08
20 pages
Article (Journal)
Electronic Resource
English
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