Virtual reality technology-based SAR (synthetic aperture radar) target characterization and display method

Abstract

The present invention discloses a virtual reality technology-based SAR (synthetic aperture radar) target characterization and display method. By means of visualization techniques such as virtual reality and holographic projection technology, the method of the invention is adopted to form a new SAR data product, and therefore, SAR multidimensional target characteristics can be effectively organized and expressed, and people can be assisted to intuitively understand SAR target scattering characteristics, and thus, the method can be better applied to the training of SAR application personnel or even SAR intelligent interpretation equipment.

Description

technical field [0001] The invention belongs to the field of synthetic aperture radar image target characteristic analysis and visualization, and in particular relates to a SAR target characteristic characterization and display method based on virtual reality technology. Background technique [0002] With the improvement of the resolution of synthetic aperture radar (SAR) and the joint acquisition of multi-angle, multi-polarization, and multi-band data, people can accumulate a large amount of SAR image data for certain scenes or a target of interest. , to provide a good data basis for target fine interpretation, information extraction, status monitoring, etc. [0003] However, since SAR is microwave imaging, its imaging mechanism is different from optical imaging, so the characteristics of a scene or target in a SAR image are very different from those in an optical image. Therefore, for human eyes and brains who are accustomed to the optical world, SAR images are poor in in...

AI Technical Summary

Problems solved by technology

[0006] Since the microwave scattering of the target is related to angle, polarization, frequency, etc., the SAR target characteristics are inherently multi-dimensional; and due to the complexity of microwave scattering and the characteristics of SAR side-view imaging, SAR images are often difficult to correspond to It is difficult for people to understand the SAR image intuitively

Therefore, the traditional visualization method of SAR target characteristics in the form of two-dimensional images has the following problems: 1) It is difficult to establish an intuitive connection between the scattering characteristics of the target in the SAR two-dimensional image and the structural shape of the target, making it difficult for people to understand the SAR image. 2) The two-dimensional image has limited ability to express, it is difficult to express the change of target characteristics with angle, polarization, etc., which is not conducive to the effective organization of data, and is not conducive to the training of SAR application personnel or intelligent interpretation equipment

We believe that with the accumulation of SAR big data today, the traditional two-dimensional image visualization method can no longer meet the needs of SAR target characteristic analysis and expression, not only it is difficult to effectively organize and express the multi-dimensional target characteristics of SAR, but also not Facilitate people's intuitive understanding

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