3-D Tomography Method Based on Ground-based Multi-channel Ice-penetrating Radar

doi:10.3969/j.issn.1006-2475.2024.06.009

Abstract

Abstract: Abstract： The establishment of ice sheet models is crucial for future global climate prediction， and obtaining accurate topographic condition is important for developing more realistic and accurate ice sheet model. The ground-based multi-channel ice-penetrating radar with the advantage of high-precision detection and positioning is suitable for obtaining the basic information required for developing ice sheet models. The traditional SAR processing algorithm based on frequency-wavenumber （f-k） migration can only measure the two-dimensional along-track tomography; in order to obtain three-dimensional tomography， geographic interpolation is required. The accuracy of the geographic interpolation affects the accuracy of the final three-dimensional topographic map; this is especially in regions with high ice flow velocities. The methods mentioned above are thoroughly examined in this essay. A three-dimensional tomography method is proposed in conjunction with the processing of the ground-based multi-channel ice-penetrating radar data in Greenland. The tomographic method allows for the direct measurement of digital elevation map （DEM）， as well as other benefits such as the ability to detect ice sheet with high spatial resolution and minimal subglacial terrain error. Results from simulation and collected data processing demonstrate the efficacy of this three-dimensional tomographic method.

Key words: Key words： ice sheets, ice-penetrating radar, spectral estimation, synthetic aperture radar （SAR）, SAR tomography

CLC Number:

TP79

XU Yuanhong1, 2, 3, ZHAO Bo1, 2, LIU Xiaojun1, 2. 3-D Tomography Method Based on Ground-based Multi-channel Ice-penetrating Radar[J]. Computer and Modernization, 2024, 0(06): 51-58.

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