基于车载多通道探冰雷达的三维冰下地形提取方法OACSTPCD

The establishment of ice sheet models is crucial for future global climate prediction,and obtaining accurate topo-graphic 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 re-quired for developing ice sheet models.The traditional SAR processing algorithm based on frequency-wavenumber(f-k)migra-tion can only measure the two-dimensional along-track tomography;in order to obtain three-dimensional tomography,geo-graphic 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 tomo-graphic method.