Metasurface unit, metasurface, electronic countermeasure decoy method and device

Abstract

The embodiment of the invention relates to a metasurface unit, a metasurface and an electronic countermeasure decoy method and device.The first end of a first wire is connected with the first end of a first microstrip line, the second end of the first microstrip line is connected with a controlled device, the controlled device is further connected with the first end of a second microstrip line, and the second end of the second microstrip line is connected with the bottom of an opening; second ends of the first wires are connected with the control circuit; a grounding hole is formed in one side of the long edge of the rectangular metal patch and penetrates through the first dielectric substrate and the grounding metal plate, a second wire is arranged in the grounding hole, the first end of the second wire is connected with the first end of a third microstrip line, the second end of the third microstrip line is connected with the long edge of the rectangular metal patch, and the second end of the second wire is connected with the grounding metal plate. On-off of the controlled device is controlled through the control circuit so that the rectangular metal patch can be controlled to reflect electromagnetic waves, the reflected electromagnetic waves carry electromagnetic scattering characteristics of background environments such as soil, gravel and trees, and therefore the electromagnetic decoy function is achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic countermeasure deception methods, and in particular, to a metasurface unit, a metasurface, an electronic countermeasure deception method and a device. Background Art

[0002] Traditional electromagnetic deception technology usually uses passive devices such as metal foil strips, corner reflectors and active baits, and is disposable. These devices are relatively low-cost and have a certain degree of deception, so they are very popular. However, the main disadvantage is that they have limited durability, require very precise positioning in time and space before use in order to perform electromagnetic deception at critical moments, and cannot intelligently change the electromagnetic deception characteristics. With the development of future detection technology, traditional passive deception technology cannot meet the needs of intelligent electromagnetic deception, and new technologies are urgently needed to promote the development of electromagnetic deception technology. Common means in current electromagnetic deception applications are electronic interference foil strips, corner reflectors, etc., and there is a lack of intelligent deception technology. Summary of the invention

[0003] In view of this, the embodiments of the present application propose a metasurface unit, a metasurface, an electronic countermeasure deception method and a device, aiming to change the electromagnetic scattering characteristics of the device when the intelligent metasurface is deployed on the electromagnetic deception device, and simulate the scattering characteristics of the reflected electromagnetic waves to the electromagnetic scattering characteristics of the background environment such as soil, gravel, and trees, thereby realizing the electromagnetic deception function.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides a metasurface unit, comprising a first dielectric substrate, a grounded metal plate, and a second dielectric substrate stacked in sequence; a rectangular metal patch, a first microstrip line, a controlled device, a second microstrip line, and a third microstrip line are provided on a surface of the second dielectric substrate away from the first dielectric substrate; a control circuit is provided on a surface of the first dielectric substrate away from the second dielectric substrate; an opening is provided on one side of a short side of the rectangular metal patch, a power connection hole is provided on one side of the opening, and the power connection hole passes through the first dielectric substrate, the grounded metal plate, and the second dielectric substrate; a first wire is provided in the grounding hole, and a first end of the first wire is connected to the The first end of the first microstrip line and the second end of the first microstrip line (8) are connected to the controlled device, the controlled device is also connected to the first end of the second microstrip line, the second end of the second microstrip line is connected to the bottom of the opening, and the second end of the first wire is connected to the control circuit; a grounding hole is provided on one side of the long side of the rectangular metal patch, the grounding hole passes through the first dielectric substrate and the grounding metal plate, a second wire is provided in the grounding hole, the first end of the second wire is connected to the first end of the third microstrip line, the second end of the third microstrip line is connected to the long side of the rectangular metal patch, and the second end of the second wire is connected to the grounding metal plate.

[0005] Optionally, the controlled device is a diode, an anode of the diode is connected to the second end of the first microstrip line, and a second end of the diode is connected to the first end of the second microstrip line.

[0006] Optionally, geometric centers of the rectangular metal patch, the second dielectric substrate, the grounded metal plate, and the first dielectric substrate are located on the same straight line.

[0007] To achieve the above objectives, an embodiment of the present application provides a metasurface having a plurality of metasurface units as described in any one of claims 1 to 5, and the plurality of metasurface units are integrated in a plane in a row.

[0008] To achieve the above-mentioned objectives, an embodiment of the present application also provides an electronic countermeasure deception method, comprising: respectively acquiring the amplitude data and phase data of multiple super-surface units provided by the aforementioned embodiments; acquiring an irradiating electromagnetic wave, and processing the irradiating electromagnetic wave to obtain electromagnetic wave parameters; processing the electromagnetic wave parameters and the amplitude data and the phase data of multiple super-surface units to obtain amplitude compensation data and phase compensation data of each of the super-surface units, and obtaining a super-surface control instruction based on the amplitude compensation data and the phase compensation data of each of the super-surface units; and controlling each of the super-surface units to send a scattered echo with simulated false target scattering characteristics to the target detection equipment according to the super-surface control instruction.

[0009] To achieve the above-mentioned purpose, an embodiment of the present application also provides an electronic countermeasure deception device, comprising an acquisition module, a receiving module and an output module, which are respectively connected to the control module in communication; wherein the acquisition module is used to respectively acquire the amplitude data and phase data of the metasurface units provided by the plurality of aforementioned embodiments, and send the amplitude data and the phase data to the control module; the receiving module is used to acquire the irradiation electromagnetic wave, process the irradiation electromagnetic wave to obtain electromagnetic wave parameters, and send the electromagnetic wave parameters to the control module; the control module is used to process the electromagnetic wave parameters and the amplitude data and the phase data of each metasurface unit, obtain the amplitude compensation data and the phase compensation data of each metasurface unit, and obtain the metasurface control instruction based on the amplitude compensation data and the phase compensation data of each metasurface unit, and send the metasurface control instruction to the output module; the output module is used to control each metasurface unit to send a scattered echo with simulated false target scattering characteristics to the target detection equipment according to the metasurface control instruction.

[0010] The embodiments of the present application propose a metasurface unit, a metasurface, an electronic countermeasure deception method and a device, which are formed by sequentially stacking a first dielectric substrate, a grounded metal plate and a second dielectric substrate; a rectangular metal patch, a first microstrip line, a controlled device, a second microstrip line and a third microstrip line are provided on the surface of the second dielectric substrate away from the first dielectric substrate; a control circuit is provided on the surface of the first dielectric substrate away from the second dielectric substrate; an opening is provided on one side of the short side of the rectangular metal patch, and a power connection hole is provided on one side of the opening, which passes through the first dielectric substrate, the grounded metal plate and the second dielectric substrate; a first wire is provided in the grounding hole, a first end of the first wire is connected to a first end of the first microstrip line, and a second end of the first microstrip line is connected to a controlled device. The device is further connected to the first end of the second microstrip line, the second end of the second microstrip line is connected to the bottom of the opening, and the second end of the first wire is connected to the control circuit; a grounding hole is provided on one side of the long side of the rectangular metal patch, the grounding hole passes through the first dielectric substrate and the grounding metal plate, a second wire is provided in the grounding hole, the first end of the second wire is connected to the first end of the third microstrip line, the second end of the third microstrip line is connected to the long side of the rectangular metal patch, and the second end of the second wire is connected to the grounding metal plate, and the on and off of the controlled device is controlled by the control circuit to realize the control of the rectangular metal patch to reflect electromagnetic waves, and the reflected electromagnetic waves carry the electromagnetic scattering characteristics of the background environment such as soil, gravel, and trees, so as to realize the electromagnetic deception function. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a top view of a supersurface unit structure provided in one embodiment of the present application;

[0012] Figure 2 is a side view of a supersurface unit structure provided in one embodiment of the present application;

[0013] Figure 3 is a schematic diagram of a supersurface structure provided in one embodiment of the present application;

[0014] Figure 4 is a flow chart of an electronic countermeasure deception method provided in one embodiment of the present application;

[0015] Figure 5 It is a structural block diagram of an electronic countermeasure deception device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0016] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not be construed as any limitation, and the various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0017] Metasurface is a structural material that is carefully designed and arranged in a certain way. It can achieve special electromagnetic properties that conventional natural media do not have, realize flexible regulation of incident electromagnetic waves, and has powerful electromagnetic wave manipulation capabilities, so it has attracted widespread attention. Metasurface can achieve electromagnetic properties that traditional materials do not have, and is easy to process, and overcomes many previous difficulties in the processing of three-dimensional metamaterials. Therefore, compared with metamaterials, metasurfaces have greater advantages in engineering applications. Smart metasurfaces integrate many low-cost adjustable metasurface units on a plane, and each metasurface unit can be independently regulated. In this way, each metasurface unit on the smart metasurface can independently control the phase and amplitude of the incident electromagnetic wave, thereby controlling the propagation direction of the electromagnetic wave. Therefore, the smart metasurface can be used to change the scattered echo of the incident electromagnetic wave. In this way, when the smart metasurface is deployed on an electromagnetic deception device, the electromagnetic scattering characteristics of the deception device can be changed, and it can be simulated as the electromagnetic scattering characteristics of background environments such as gravel and ground, thereby realizing the electromagnetic deception function.

[0018] refer to Figure 1 and Figure 2The metasurface unit proposed in this embodiment includes: a first dielectric substrate 10, a grounded metal plate 9, and a second dielectric substrate 6 stacked in sequence; a rectangular metal patch 1, a first microstrip line 8, a controlled device 2, a second microstrip line 7, and a third microstrip line 3 are provided on the surface of the second dielectric substrate 6 away from the first dielectric substrate 10; a control circuit 11 is provided on the surface of the first dielectric substrate 10 away from the second dielectric substrate 6; an opening 101 is provided on one side of the short side of the rectangular metal patch 1, and a power connection hole 4 is provided on one side of the opening 101, which passes through the first dielectric substrate 10, the grounded metal plate 9, and the second dielectric substrate 6, and a first conductor is provided in the grounding hole, and a first The first end of the wire is connected to the first end of the first microstrip line 8, the second end of the first microstrip line 8 is connected to the controlled device 2, the controlled device 2 is also connected to the first end of the second microstrip line 7, the second end of the second microstrip line 7 is connected to the bottom of the opening 101, and the second end of the first wire is connected to the control circuit 11; a grounding hole 5 is provided on one side of the long side of the rectangular metal patch 1, the grounding hole 5 passes through the first dielectric substrate 10 and the grounding metal plate 9, a second wire is provided in the grounding hole 5, the first end of the second wire is connected to the first end of the third microstrip line 3, the second end of the third microstrip line 3 is connected to the long side of the rectangular metal patch 1, and the second end of the second wire is connected to the grounding metal plate 9.

[0019] The principle of this application is that when an electromagnetic wave encounters an object, the electrons on the object will vibrate under the action of the electromagnetic wave electric field, and this electronic vibration will radiate electromagnetic waves outward, a phenomenon called electromagnetic scattering. Different objects will produce different scattering fields under the same incident electromagnetic wave excitation. During radar detection, the detection radar determines whether the detected object is a detection target based on the echo signal generated by the scattered electromagnetic waves of the detected object. Therefore, if the scattering characteristics of the detected target can be disguised as the scattering characteristics of background objects such as soil, gravel, and trees, the detection radar can be deceived. In order to scientifically and quantitatively characterize the electromagnetic scattering characteristics of an object, the scattering characteristics of an object are defined by the radar scattering cross section, which characterizes the intensity of the scattered echo generated by the target under radar irradiation. The intelligent super surface is to integrate many low-cost adjustable super surface units on a plane, and each super surface unit can be independently regulated. In this way, each super surface unit on the intelligent super surface can independently control the phase and amplitude of the incident electromagnetic wave, thereby controlling the propagation direction of the electromagnetic wave, so the intelligent super surface can be used to change the scattered echo of the incident electromagnetic wave. In this way, when the smart metasurface is deployed on an electromagnetic deception device, the electromagnetic scattering characteristics of the device can be changed, and the scattering characteristics of the reflected electromagnetic waves can be simulated to the electromagnetic scattering characteristics of the background environment such as soil, gravel, and trees, thereby realizing the electromagnetic deception function.

[0020] In the present application, the control circuit 11 is connected to the second end of the first wire, the first end of the second wire is connected to the first end of the first microstrip line 8, the second end of the first microstrip line 8 is connected to the controlled device 2, the controlled device 2 is connected to the first end of the second microstrip line 7, the second end of the second microstrip line 7 is connected to the rectangular metal patch 1, the rectangular metal patch 1 is also connected to the second end of the third microstrip line 3, the first end of the third microstrip line 3 is connected to the second wire, and the second wire is connected to the grounded metal plate 9 to form a closed loop of the circuit, so that under the control of the control circuit 11, the controlled device 2 is turned on and off, thereby realizing the rectangular metal patch 1 reflecting electromagnetic waves, wherein the first microstrip line 8 is a positive microstrip line, the second microstrip line 7 is a negative microstrip line, and the third microstrip line 3 is a grounded microstrip line.

[0021] It should be noted that the opening 101 is U-shaped, the first microstrip line 8, the controlled device 2 and the second microstrip line 7 are all located inside the opening 101, and the first end of the first microstrip line 8 can be flush with the edge of one side of the opening of the metal patch 1. This can standardize production and improve production efficiency.

[0022] In the embodiment of the present invention, the controlled device 2 is a diode, the anode of the diode is connected to the second end of the first microstrip line 8 , and the second end of the diode is connected to the first end of the second microstrip line 7 .

[0023] Specifically, each metasurface unit adjusts the on-off state of the diode according to the instruction of the diode switching state sent by the control circuit 11, thereby completing the regulation of the metasurface unit.

[0024] In the embodiment of the present invention, the geometric centers of the rectangular metal patch 1, the second dielectric substrate 6, the grounding metal plate 9, and the first dielectric substrate 10 are located on the same straight line.

[0025] Based on the above embodiments, Figure 3 The present application also provides a metasurface having a metasurface unit provided by any of the aforementioned embodiments, and a plurality of metasurface units are integrated in a row on a plane.

[0026] When the electromagnetic waves emitted by the detection radar hit the surface of the electromagnetic deception device, the intelligent metasurface will analyze the phase and amplitude information that needs to be compensated for each metasurface unit based on the characteristics of the received electromagnetic waves. The control system will publish the switch state of each unit diode to each metasurface unit. After all the metasurface units in the intelligent metasurface array are regulated, the electromagnetic deception device can simulate the scattered echoes of targets such as soil, gravel, and trees, thereby deceiving the detection radar.

[0027] Based on the above embodiments, the present application also provides an electronic countermeasure deception method, which can be executed by a processor, and the processor is used to send a control instruction to the control circuit 11, referring to Figure 4 , the method comprising:

[0028] S10, respectively obtaining the amplitude data and phase data of the metasurface unit provided by any of the aforementioned embodiments;

[0029] In this step, the processor can first obtain the amplitude data and phase data of the metasurface unit to prepare data for subsequent precise compensation of the amplitude data and phase data of the metasurface unit.

[0030] S20, obtaining an irradiated electromagnetic wave, and processing the irradiated electromagnetic wave to obtain electromagnetic wave parameters;

[0031] Specifically, the processor can process the received irradiating electromagnetic waves to obtain electromagnetic wave parameters, wherein the parameters of the electromagnetic waves may include frequency index, polarization direction, incoming wave direction, etc.

[0032] S30, processing electromagnetic wave parameters and amplitude data and phase data of multiple metasurface units to obtain amplitude compensation data and phase compensation data of each metasurface unit, and obtaining a metasurface control instruction based on the amplitude compensation data and phase compensation data of each metasurface unit;

[0033] In this step, the processor can receive the electromagnetic wave parameters obtained by the system and the amplitude data and phase data of multiple metasurface units, analyze the amplitude and phase information that need to be compensated for each metasurface unit, determine the switching state of each controlled device 2 according to the amplitude and phase characteristics that need to be compensated for each unit, and generate metasurface control instructions for each metasurface unit.

[0034] S40. Control each metasurface unit to send a scattered echo having a simulated false target scattering characteristic to the target detection equipment according to the metasurface control instruction.

[0035] Specifically, the control circuit 11 of each metasurface unit adjusts the switching state of the controlled device 2 according to the received metasurface control instruction, and completes the regulation of each metasurface, thereby realizing the scattering characteristics of the metasurface simulating false targets such as gravel and trees, so as to achieve the purpose of deceiving enemy detection equipment.

[0036] It should be noted that the step division of the above methods is only for clear description. When implemented, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this application; adding insignificant modifications to the algorithm or process or introducing insignificant designs without changing the core design of the algorithm and process are all within the scope of protection of this application.

[0037] Based on the above embodiments, the present application also provides an electronic countermeasure deception device 200, referring to Figure 5The electronic countermeasure deception device 200 includes an acquisition module 201, a receiving module 202, a control module 203 and an output module 204, which are respectively connected to the control module 203 for communication, wherein the acquisition module 201 is used to respectively acquire the amplitude data and phase data of the metasurface unit provided by any of the aforementioned embodiments, and send the amplitude data and phase data to the control module 203; the receiving module 202 is used to acquire the irradiated electromagnetic wave, process the irradiated electromagnetic wave to obtain the electromagnetic wave parameters, and send the electromagnetic wave parameters to the control module 203; the control module 203 is used to process the electromagnetic wave parameters and the amplitude data and phase data of each metasurface unit, obtain the amplitude compensation data and phase compensation data of each metasurface unit, and obtain the metasurface control instruction based on the amplitude compensation data and phase compensation data of each metasurface unit, and send the metasurface control instruction to the output module 204; the output module 204 is used to control each metasurface unit to send a scattered echo with simulated false target scattering characteristics to the target detection equipment according to the metasurface control instruction.

[0038] It is worth mentioning that all modules involved in this embodiment are logic modules. In practical applications, a logic unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. In addition, in order to highlight the innovative part of this application, this embodiment does not introduce units that are not closely related to solving the technical problems proposed by this application, but this does not mean that there are no other units in this embodiment.

[0039] It is not difficult to find that this embodiment is a system embodiment corresponding to the above method embodiment, and this embodiment can be implemented in conjunction with the above method embodiment. The relevant technical details and technical effects mentioned in the above embodiments are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the above embodiments.

[0040] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A metasurface unit, characterized in that: include: A first dielectric substrate (10), a grounding metal plate (9) and a second dielectric substrate (6) stacked in sequence; A rectangular metal patch (1), a first microstrip line (8), a controlled device (2), a second microstrip line (7) and a third microstrip line (3) are provided on a surface of the second dielectric substrate (6) away from the first dielectric substrate (10); A control circuit (11) is provided on a surface of the first dielectric substrate (10) away from the second dielectric substrate (6); The rectangular metal patch (1) has an opening (101) on one side of a short side, and a power connection hole (4) penetrating the first dielectric substrate (10), the grounding metal plate (9) and the second dielectric substrate (6) is provided on one side of the opening (101), and a first wire is provided in the power connection hole (4), and a first end of the first wire is connected to a first end of the first microstrip line (8), and a second end of the first microstrip line (8) is connected to the controlled device (2), and the controlled device (2) is also connected to a first end of the second microstrip line (7), and a second end of the second microstrip line (7) is connected to the bottom of the opening (101), and a second end of the first wire is connected to the control circuit (11); A grounding hole (5) is provided on one side of the long side of the rectangular metal patch (1), the grounding hole (5) passes through the first dielectric substrate (10) and the grounding metal plate (9), a second wire is provided in the grounding hole (5), a first end of the second wire is connected to a first end of the third microstrip line (3), a second end of the third microstrip line (3) is connected to the long side of the rectangular metal patch (1), and a second end of the second wire is connected to the grounding metal plate (9).

2. The metasurface unit according to claim 1, characterized in that: The controlled device (2) is a diode, the anode of the diode is connected to the second end of the first microstrip line (8), and the second end of the diode is connected to the first end of the second microstrip line (7).

3. The metasurface unit according to claim 1, characterized in that: The geometric centers of the rectangular metal patch (1), the second dielectric substrate (6), the grounding metal plate (9), and the first dielectric substrate (10) are located on the same straight line.

4. A metasurface, characterized in that: There are multiple super surface units as described in any one of claims 1 to 3, and the multiple super surface units are integrated in a plane in a row.

5. An electronic countermeasure deception method, characterized in that: include: Respectively obtain amplitude data and phase data of a plurality of metasurface units as described in any one of claims 1 to 3; Acquiring an irradiating electromagnetic wave, and processing the irradiating electromagnetic wave to obtain electromagnetic wave parameters; Processing the electromagnetic wave parameters and the amplitude data and the phase data of the plurality of metasurface units to obtain amplitude compensation data and phase compensation data of each metasurface unit, and obtaining a metasurface control instruction based on the amplitude compensation data and the phase compensation data of each metasurface unit; According to the metasurface control instruction, each of the metasurface units is controlled to send a scattered echo having a simulated false target scattering characteristic to a target detection device.

6. An electronic countermeasure deception device, characterized in that: It includes an acquisition module, a receiving module, a control module and an output module which are respectively connected to the control module in communication; The acquisition module is used to respectively acquire the amplitude data and the phase data of a plurality of metasurface units according to any one of claims 1 to 3, and send the amplitude data and the phase data to the control module; The receiving module is used to acquire the irradiation electromagnetic wave, process the irradiation electromagnetic wave to obtain electromagnetic wave parameters, and send the electromagnetic wave parameters to the control module; The control module is used to process the electromagnetic wave parameters and the amplitude data and the phase data of each of the metasurface units, obtain the amplitude compensation data and the phase compensation data of each of the metasurface units, obtain a metasurface control instruction based on the amplitude compensation data and the phase compensation data of each of the metasurface units, and send the metasurface control instruction to the output module; The output module is used to control each of the metasurface units to send scattered echoes with simulated false target scattering characteristics to target detection equipment according to the metasurface control instructions.

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