A Gravity Forward Modeling Acceleration Method
A gravity and forward modeling technology, applied in the direction of measuring gravitational field, image data processing, measuring devices, etc., can solve the problems that grid division cannot fit complex models well, and it is not suitable for dealing with three-dimensional problems with terrain
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[0135] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0136] The gravitational calculation method that the present invention relates to comprises the following steps:
[0137] Step 1. Design of measuring points and source files: determine the number and coordinates of measuring points, and the coordinate file of the density body position. And perform unstructured grid division. The corresponding octree structure is established for the observation point and the density body respectively, and the integration area is divided into the near area and the far area.
[0138] Step 2. Calculation of the far field: Calculate the far field integral through the adaptive fast multi-pole expansion acceleration algorithm.
[0139] Step 3. Calculation of the near-area field: Calculate the near-area integral with high precision and no singularity through the analytical expression.
[0140] Step 4. Calculate the gr...
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