Study On Modeling Method Of Electromagnetic Scattering In Sea Island

The electromagnetic scattering characteristics of islands have important research significance in the field of environmental electromagnetic scattering,but its progress is relatively slow.The difficulty lies in the fact that real scenes often have very complex geometric models and scattering properties,plus a variety of environments staggered distribution,making modeling and scattering Analysis is particularly difficult.The research on the electromagnetic scattering characteristics of islands and other complex terrain scenes is still in a stage of continuous improvement.Researching composite scattering solutions that integrate geometric modeling from real complex scenes to electromagnetic modeling will become the primary goal and task in the field of maritime and ground target recognition.In this paper,based on the geometric model of the surrounding environment of the island and its surrounding sea areas,combined with the digital elevation model()and high-resolution remote sensing images,the real three-dimensional surface landscape was reconstructed,and the surface environment of the study area was classified and identified.Based on this,the electromagnetic scattering characteristics of the composite scene of the island and its adjacent sea area were calculated and calculated.The main work of the paper is:1.Firstly,the geometric modeling and electromagnetic scattering characteristics of various covered ground objects included in the study area of the island are analyzed.The geometric modeling methods for different types of rock masses are mainly proposed,and the geometries of bare soil,vegetation and sea surface are presented.Modeling and electromagnetic scattering characteristics were calculated and analyzed.2.The digital terrain model was used to establish the real terrain surface.The high resolution remote sensing images were classified and processed to obtain the classification information data.The real terrain surface and classification data were combined to obtain a three-dimensional terrain landscape model with segmentation information.This method of modeling based on real data highly restores the original terrain and feature information.It can be used not only to calculate islands,but also applies to any elevation and remote sensing image coverage areas such as coastal,mountainous,and Gobi.This method is highly authentic compared to other hypothesis-based modeling methods.3.The composite model of the island is simulated,and the complex scattering of the island is calculated based on the model.The distribution of the scattering unit field in the island is given and analyzed.It can be based on the size and texture of the surface reflection intensity in the same environment.It is relatively intuitive to compare the different ground surface environments for the scattering or absorption of specific frequencies of electromagnetic waves.And the study of island basal fields provides data support for the application of island SAR imaging.4.Analyzed several key issues that need to be solved to establish the island geometric model and scattering model,using the unified modeling language and the idea of reusable object-oriented software design.The island's real scene model,typical ground environment geometry model and electromagnetic scattering The model is integrated and modeled.Based on this model,the island's geometric model and scattering model modeling integration software are developed.The software has the advantages of scalability,reusability,strong maintainability,etc.,and is convenient for calculation.Any other research area and expansion of unconsidered ground environments(such as snow,sand,forests,etc.).