Passive electromagnetic vortex SAR azimuth super-resolution imaging method and device
A technology of super-resolution and imaging methods, which is applied in the directions of measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., and can solve problems such as difficult implementation and complex hardware structure
Active Publication Date: 2020-10-20
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] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] Embodiments of the present disclosure are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The present disclosure can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, al...
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The embodiment of the invention provides a passive electromagnetic vortex SAR azimuth super-resolution imaging method and a passive electromagnetic vortex SAR azimuth super-resolution imaging device.The method comprises the steps of establishing a passive electromagnetic vortex geometric model, using a single antenna as a transmitting antenna to transmit plane waves to perform target detection, using a uniform circular array antenna as a receiving antenna to receive and superpose vortex echoes, and obtaining a vortex echo signal equation; and performing imaging processing based on the vortexecho signal equation. According to the invention, the vortex electromagnetic signal generation technology is combined with the SAR system in a passive radar implementation mode, and the problems thata traditional complex vortex antenna is carried in the SAR system, the hardware structure is complex, and the implementation is difficult are effectively solved.
Description
technical field [0001] The invention relates to the technical field of microwave radar detection, in particular to a passive electromagnetic vortex SAR azimuth super-resolution imaging method and device in the related technology of combining electromagnetic vortex and SAR imaging system. Background technique [0002] Synthetic Aperture Radar (SAR) has the advantages of all-day, all-weather, high-resolution, and wide-coverage information acquisition. Imaging is not limited by light, weather, and clouds. Transmit frequency modulation signals and receive target scattered echoes, and obtain high-resolution two-dimensional remote sensing images in range and azimuth directions through pulse compression technology and synthetic aperture principle. However, the electromagnetic environment in today's society is becoming more and more complex, various high and new technologies are constantly emerging, and the development of electronic countermeasure technologies such as anti-radiation...
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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