Passive electromagnetic vortex sar azimuth super-resolution imaging method and device
An imaging method and super-resolution technology, which can be used in measurement devices, radio wave measurement systems, and radio wave reflection/re-radiation. It can solve the problems of complex hardware structure and difficult to achieve, and achieve the solution of complex hardware structure and breakthrough antenna. Effect of Aperture Limitation
Active Publication Date: 2022-03-04
INNER MONGOLIA UNIV OF SCI & TECH
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[0005] In view of this, the embodiments of the present invention provide a passive electromagnetic vortex SAR azimuth super-resolution imaging method and device to solve the problem of complex hardware structure and difficult implementation of traditional complex vortex antennas in SAR systems, and realize Azimuth super-resolution imaging
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[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0021] The embodiments of the present disclosure can be easily understood by the present specification by specific embodiments, and those skilled in the art can easily understand other advantages and efficacy of the present disclosure. Obviously, the described embodiments are merely the embodiments of the present disclosure, not all of the embodiments. The present disclosure can also be implemented or applied by different embodiments. The details in this specification may also be based on different perspectives and applications, and various modifications or changes are made without departing from the spirit of the present disclosure. It should be noted that the features in the following examples and embodiments may be combined with each other in the case of unlilled. Based on the embodiments in the present disclosure, there are all other embodiments obta...
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An embodiment of the present invention provides a passive electromagnetic vortex SAR azimuth super-resolution imaging method and device, wherein the method includes: establishing a passive electromagnetic vortex geometric model, and using a single antenna as a transmitting antenna to transmit a plane wave for target detection , and the uniform circular array antenna is used as the receiving antenna to receive and superimpose the vortex echo to obtain the vortex echo signal equation; and perform imaging processing based on the vortex echo signal equation. The invention combines the vortex electromagnetic signal generation technology with the SAR system by using the passive radar implementation method, and effectively solves the problem of complex hardware structure and difficult implementation of the traditional complex vortex antenna mounted in the SAR system.
Description
Technical field [0001] The present invention relates to the field of microwave radar detection techniques, and more particularly to electromagnetic vortex and SAR imaging systems, passive electromagnetic vortex SAR-orientation to super resolution imaging methods and apparatus. Background technique [0002] Synthetic Aperture Radar, SAR is all-day, all-weather, high-resolution, wide-covered information acquisition advantages, imaging is not limited by light, climate and cloud restrictions, carrying platforms such as satellite or aircraft and relative movement, Transmit a frequency modulated signal, and receives the target scatter echo, by pulse compression technology, the synthetic aperture principle obtains distance to and orientation to high resolution 2D remote sensing images. However, today's social electromagnetic environment is increasingly complex, various high-tech continues to emerge, and the development of anti-radiation missiles, stealth detection, ultra-low-altitude pr...
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IPC IPC(8): G01S13/90
CPCG01S13/90
Inventor 杜永兴仝宗俊李晨璐秦岭李宝山刘欢
Owner INNER MONGOLIA UNIV OF SCI & TECH