Electromagnetic Wave Quantum State Orbital Angular Momentum Radar Detection and Method
A technology of orbital angular momentum and electromagnetic waves, applied in radio wave measurement systems, instruments, etc., can solve the problems of limited detection performance, structural RCS weakening, material RCS weakening, etc., and achieve the effect of improving detection performance and echo signal power
Active Publication Date: 2021-11-23
TSINGHUA UNIV
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[0007] In view of the above problems, the object of the present invention is to provide an electromagnetic wave quantum state orbital angular momentum radar detection system and method, to solve the problem that the current traditional radar detection system uses plane electromagnetic waves to detect weak and small RCS targets, which limits the improvement of detection performance. There are problems such as structural RCS weakening and material RCS weakening
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[0033] In the following description, for the purposes of illustration, many specific details are set forth in order to provide a comprehensive understanding of one or more embodiments. However, it is clear that these embodiments may be implemented without these specific details. In other examples, in order to facilitate one or more embodiments, the well-known configurations and devices are shown in the form of a block diagram.
[0034] At present, the purpose of reducing radar detection performance is to minimize the RCS of the emitting electromagnetic wave target, mainly divided into "material RCS weakening" and "structural RCS weakened", material RCS weakened mainly with polymer composite absorbing coating Greatly reduce the plane electromagnetic wave reflectance, realize the absorption of electromagnetic waves; the structural RCS weakened mainly by designing the reflective surface, the slit, the rectangle groove, etc. The electromagnetic wave power is reduced, thereby reducing ...
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The invention provides an electromagnetic wave quantum state orbital angular momentum radar detection system and method. The system includes a transmitting subsystem and a receiving subsystem. The transmitting subsystem generates electromagnetic wave photons or microwave quanta carrying quantum state orbital angular momentum, and selects the required orbital angular momentum modal number electromagnetic wave, and irradiates the detection target after being emitted by the quantum electromagnetic wave beam-forming antenna; the receiving subsystem uses light detection The detector receives reflected photons, or uses the antenna to receive the electric field strength of the quantum state orbital angular momentum electromagnetic wave, calculates the parameters of the required detection target through the signal processing unit, improves the signal-to-noise ratio of the signal before detection through data processing and cognitive processing, and finally uses high The signal of signal-to-noise ratio completes the functions of detection, imaging and tracking of radar detection. The above-mentioned invention has the characteristics of strong echo signal power, high signal-to-noise ratio before detection and large scattering cross-sectional area, which can fundamentally improve the detection limit of traditional radars and improve detection capabilities.
Description
Technical field [0001] The present invention relates to the field of electromagnetic wave orbital angle momentum quantum state technology, and more particularly to an electromagnetic wave quantitative rail detection system and method. Background technique [0002] With the development and application of electromagnetic wave absorbing structure, material and plasma, etc. 2 Reaching 10 -3 m 2 Some weakly RCS targets can even reach 10 -4 m 2 . The ability to detect weak RCS targets is an important technical indicator of modern radar system, and the public reported modern radar system has only 0.01m on the limit detection capability of the target. 2 , Severely test the radar to detect weak small RCS target capabilities, and must upgrade the performance of the radar to detect weak RCS targets to meet the detection needs. [0003] The current RF radar system or optical radar (microwave, millimeter wave, laser, etc.) is based on a planar electromagnetic wave, and the electric field stre...
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IPC IPC(8): G01S7/02G01S7/42G01S7/41
CPCG01S7/02G01S7/411G01S7/414G01S7/42
Inventor 张超徐鹏飞
Owner TSINGHUA UNIV