CN115436885B - A remotely controlled electronic reflector - Google Patents
A remotely controlled electronic reflector Download PDFInfo
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- CN115436885B CN115436885B CN202211222833.3A CN202211222833A CN115436885B CN 115436885 B CN115436885 B CN 115436885B CN 202211222833 A CN202211222833 A CN 202211222833A CN 115436885 B CN115436885 B CN 115436885B
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- remote control
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- antenna array
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- 238000002955 isolation Methods 0.000 claims abstract description 16
- 230000010363 phase shift Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 description 10
- 230000021615 conjugation Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 241000726103 Atta Species 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
- G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder
- G01S7/4078—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder involving an integrated reference reflector or reference transponder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/411—Identification of targets based on measurements of radar reflectivity
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application relates to a remotely controllable electronic reflector. The reflector comprises an antenna array, an isolation design, a plurality of controllable phase-shifting amplifying modules and a remote control system, wherein the antenna array comprises a receiving array and a transmitting array, corresponding array elements of the receiving array and the transmitting array form a group of receiving array element pairs, the isolation design is positioned between the receiving array and the transmitting array of the antenna array, the controllable phase-shifting amplifying modules comprise amplifiers and phase shifters and are used for adjusting gain and phase shift between each group of receiving array element pairs, the remote control system comprises a remote control signal transmitter and a remote control command receiver and is used for realizing a remote control function, the remote control function comprises controlling the on-off state of the reflector, controlling echo signal amplitude and phase modulation, and the remote control signal transmitter is used for transmitting a remote control command. The RCS change characteristic of the modulation target can be remotely controlled by adopting the electronic reflector.
Description
Technical Field
The application relates to the technical field of radar interference, in particular to an electronic reflector capable of being controlled remotely.
Background
The reflector has the main functions of focusing radar wave signals and reversely reflecting the radar wave signals back along the original path of the incident direction, so that the energy of back scattering echo signals can be enhanced, and the effect of regulating and controlling the target characteristics of the radar is achieved. Common reflectors include corner reflectors, luneberg lenses, directional retrospective antenna arrays, etc., but the RCS characteristics of these reflectors only change with the structural and dimensional changes of the reflectors, once the reflectors are shaped, their RCS characteristics are fixed and easily resolved by radar identification systems. The adjustable electronic reflector solves the problem, not only can simulate the RCS change characteristic of a real target, serve as a false target or radar decoy to protect the real target, but also has a phase modulation function and is not easy to distinguish by a radar recognition system.
However, the current reflector realizes the modulation function of the signal amplitude and phase of the radar target echo to different degrees, plays a role in protecting a real target, but does not have the capability of remotely controlling the working state of the reflector, and cannot be well applied to working scenes such as severe environments and complex terrains which cannot be contacted closely by people.
Disclosure of Invention
In view of the above, it is desirable to provide a remotely controllable, modulatable electronic reflector.
The electronic reflector capable of being controlled remotely comprises an antenna array, an isolation design, a controllable phase-shifting amplifying module and a remote control system;
The antenna array comprises a receiving array and a transmitting array, wherein corresponding array elements of the receiving array and the transmitting array form a group of receiving-transmitting array element pairs, and all the receiving-transmitting array element pairs meet the phase conjugation relationship;
The isolation design is positioned between a receiving array and a transmitting array of the antenna array;
the controllable phase-shifting amplifying module comprises an amplifier and a phase shifter and is used for adjusting gain and phase shift between each group of receiving and transmitting array element pairs;
The remote control system comprises a remote control signal transmitter and a remote control command receiver, wherein the remote control signal transmitter and the remote control command receiver are used for realizing a remote control function, the remote control function comprises controlling the switch state of a reflector and controlling the amplitude and phase modulation of an echo signal, the remote control command receiver is positioned in the reflector, and the remote control signal transmitter is used for transmitting a remote control command.
In one embodiment, the total length of the transmission line between all the transceiver element pairs is kept uniform.
In one embodiment, the isolation design has an isolation greater than the maximum gain value of the amplifier.
In one embodiment, the number of controllable phase-shifting amplifying modules, the number of array elements of a receiving array of an antenna array and the number of array elements of a transmitting array of the antenna array are the same, and the antenna array is preferably a Van Atta antenna array.
In one embodiment, the remote control system may generate either an analog signal or a digital signal as the control signal.
In one embodiment, the remote control system may employ a remote control means including, but not limited to, a radio remote control, an infrared remote control, a laser remote control, a microwave remote control, and the like.
In one embodiment, the phase shifter of the controllable phase shifting amplifying module and the amplifier are both controlled by the same control signal generated by the remote control command receiver.
In one embodiment, controlling the echo signal amplitude and phase modulation includes controlling the modulation frequency, timing, and duty cycle of the control signal.
According to the electronic reflector capable of being controlled remotely, the controllable phase shifting amplifying module is added to enable the phase of an echo to be programmable and configured, gain and phase shift among each group of receiving and transmitting array element pairs are adjusted, the function of modulating the signal amplitude and the phase of a radar target echo is achieved, meanwhile, remote control on the switching state of the reflector, the amplitude modulation and the phase modulation of the echo signal and the like is achieved through the addition of the remote control system, in the application of radar target characteristic regulation, the electronic reflector can be controlled remotely to achieve the amplitude modulation of the echo signal, simulate RCS change characteristics of a real target and change the phase characteristics of the echo signal, the electronic reflector capable of being modulated can be arranged in a working scene which is severe in environment and complex in terrain and the like and cannot be controlled in a short distance, only the working state of the electronic reflector is required to be controlled remotely, and in addition, the remote control on the working state of the reflector is achieved through the remote control signal transmitter, so that the control process is simpler, and the electronic reflector has the advantages of miniaturization, modulatable, wide application environment, simplicity in control and the like.
Drawings
FIG. 1 is a schematic diagram of a remotely controllable electronic reflector according to one embodiment;
FIG. 2 is a schematic flow chart of a remote control of a remotely controllable electronic reflector according to one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In one embodiment, as shown in FIG. 1, a remotely controllable electronic reflector is provided, the reflector comprising an antenna array 1, a controllable phase-shifting amplification module 3, an isolation design 4 and a remote control system;
The antenna array 1 comprises a receiving array 11 and a transmitting array 12, wherein corresponding array elements of the receiving array and the transmitting array form a group of receiving-transmitting array element pairs, and all the receiving-transmitting array element pairs meet the phase conjugation relationship;
The isolation design is positioned between a receiving array and a transmitting array of the antenna array;
the controllable phase-shifting amplifying module 3 comprises an amplifier 31 and a phase shifter 32, and is used for adjusting gain and phase shift between each group of receiving and transmitting array element pairs;
The remote control system comprises a remote control signal transmitter 7 and a remote control command receiver 6, wherein the remote control function is used for realizing a remote control function, the remote control function comprises the steps of controlling the switch state of a reflector and controlling the amplitude and phase modulation of an echo signal, the remote control command receiver 6 is positioned inside the reflector, and the remote control signal transmitter 7 is used for transmitting a remote control command.
In a specific implementation process, the antenna array 1 is connected with the controllable phase-shifting amplifying module 3 through a transmission line 21, a transmission line 22, a transmission line 23 and a transmission line 24, the transmission line 21 and the transmission line 22 connect the antenna array element on the receiving antenna array 11 with the input end of the controllable phase-shifting amplifying module 3, the transmission line 23 and the transmission line 24 connect the antenna array element on the transmitting antenna array 12 with the output end of the controllable phase-shifting amplifying module 3, and the total length of the transmission line (namely, the length sum of the transmission line 21 and the transmission line 22 and the length sum of the transmission line 23 and the transmission line 24) connecting each group of the receiving antenna array element and the transmitting antenna array element is the same 4×4 planar antenna array, and the receiving antenna array 11 and the transmitting antenna array 12 are the same. In other embodiments, different antenna elements, different numbers of the antenna elements, different array arrangement modes and the like may be adopted according to actual needs, and in general, the larger the gain of the required antenna array, the larger the number of the antenna elements. The bandwidth and the beam width of the antenna array element determine the bandwidth and the space coverage of the retroreflector, and the bandwidth and the beam width of the antenna array element can be selected according to actual needs.
The antenna array elements on the receiving antenna array 11 are connected with the input end of the controllable phase-shifting amplifying module 3 through a transmission line 21, the antenna array elements on the transmitting antenna array 12 are connected with the output end of the controllable phase-shifting amplifying module 3 through a transmission line 23, the total length of the transmission line (namely the sum of the lengths of the transmission line 21 and the transmission line 23) between each group of receiving antenna array elements and the transmitting antenna array elements is kept consistent, phase conjugation is realized, one controllable phase-shifting amplifying module 3 is loaded between each group of array elements, the total number of the controllable phase-shifting amplifying module is 16, and each controllable phase-shifting amplifying module 3 comprises an amplifier 31 and a phase shifter 32 for adjusting gain and phase shift between each group of receiving and transmitting array element pairs, so that the modulation function of signal amplitude and phase of radar target echo is realized.
The control signals output by the remote control command receiver 6 can respectively control the states of the amplifier, the phase shifter and the reflector power switch 5 in the controllable phase-shifting amplifying module 3 to be rapidly switched, the amplifiers of all the controllable phase-shifting amplifying modules 3 are controlled by the same control signal generated by the remote control command receiver 6 so as to ensure that gains among various groups of array elements of the receiving antenna array 11 and the transmitting antenna array 12 are the same, and the phase shifters of all the controllable phase-shifting amplifying modules 3 are controlled by the same control signal generated by the remote control command receiver 6 so as to ensure that the receiving antenna array 11 and the transmitting antenna array 12 are always in a phase conjugation state, so that the direction of a reflected wave beam is consistent with the direction of a radar wave incident wave beam.
Taking the above-described embodiments as an example, the remote control function mentioned in the present invention is specifically described below. The remote control system with the reflector comprises a remote control signal transmitter 7 and a remote control command receiver 6, wherein the remote control command receiver 6 outputs corresponding control signals by receiving remote control commands transmitted by the remote control signal transmitter, and the control signals can respectively control an amplifier, a phase shifter, a power switch and the like in the controllable phase-shifting amplifying module. Different buttons on the remote control signal transmitter 7 correspondingly realize different remote control functions, including control of the switch state of the reflector, control of the amplitude and phase modulation of the echo signals, and the like.
For a clearer illustration, fig. 2 shows a workflow in which the reflector of the present invention can implement a remote control function. Different buttons on the remote control signal transmitter 7 control different remote control command transmissions, and the remote control command receiver 6 outputs corresponding control signals by receiving the remote control commands transmitted by the remote control signal transmitter 7. The remote control signal transmitter 7 controls the characteristics of the frequency, the time sequence, the duty ratio and the like of the control signal output by the receiving circuit by transmitting different remote control commands, and the receiver correspondingly changes the frequency, the time sequence or the duty ratio of the output control signal according to the different received remote control commands, so that the control signal further completes multiple controls on the switch state of the reflector, the amplitude and the phase modulation of the echo signal and the like.
In one embodiment, the total length of the transmission line between all the transceiver element pairs is kept uniform.
In a specific embodiment, the total length of the transmission line between each group of array elements is kept consistent, so as to meet the phase conjugation relationship between all the transceiver array element pairs.
In one embodiment, the isolation design has an isolation greater than the maximum gain value of the amplifier.
In a specific embodiment, the isolation degree of the isolation design is larger than the maximum gain value of the amplifier, so that loop self-excitation can be avoided.
In one embodiment, the number of controllable phase-shifting amplifying modules, the number of array elements of a receiving array of an antenna array and the number of array elements of a transmitting array of the antenna array are the same, and the antenna array is preferably a Van Atta antenna array.
In one embodiment, the remote control system may generate either an analog signal or a digital signal as the control signal.
In one embodiment, the remote control system may employ a remote control means including, but not limited to, a radio remote control, an infrared remote control, a laser remote control, a microwave remote control, and the like.
In one embodiment, the phase shifter of the controllable phase shifting amplifying module and the amplifier are both controlled by the same control signal generated by the remote control command receiver.
In a specific embodiment, the phase shifters of all the controllable phase shifting amplifying modules are controlled by the same control signal generated by the remote control command receiver, so as to ensure that the phase delays of all groups of array elements between the receiving antenna array and the transmitting antenna array are consistent, and the transmitting antenna array is always in a phase conjugation state. If in a process the phase of the output wave is the complex conjugate of the phase of the input wave, this process is defined as phase conjugation;
All the amplifiers of the controllable phase-shifting amplifying modules are controlled by the same control signal generated by the remote control command receiver so as to ensure that each group of array elements between the receiving antenna array and the transmitting antenna array obtain the same gain.
In one embodiment, controlling the echo signal amplitude and phase modulation includes controlling the modulation frequency, timing, and duty cycle of the control signal.
It should be understood that, although the steps in the flowchart of fig. 2 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 2 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211222833.3A CN115436885B (en) | 2022-10-08 | 2022-10-08 | A remotely controlled electronic reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211222833.3A CN115436885B (en) | 2022-10-08 | 2022-10-08 | A remotely controlled electronic reflector |
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| Publication Number | Publication Date |
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| CN115436885A CN115436885A (en) | 2022-12-06 |
| CN115436885B true CN115436885B (en) | 2025-02-18 |
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| CN202211222833.3A Active CN115436885B (en) | 2022-10-08 | 2022-10-08 | A remotely controlled electronic reflector |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9620874D0 (en) * | 1996-10-07 | 1996-11-27 | Secr Defence | Reflector |
| CN114442059A (en) * | 2021-12-15 | 2022-05-06 | 中国人民解放军国防科技大学 | A retroreflector with highly dynamic reconfigurable RCS |
| CN218727963U (en) * | 2022-10-08 | 2023-03-24 | 天津先进技术研究院 | Electronic reflector capable of being remotely controlled |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6914554B1 (en) * | 2003-10-17 | 2005-07-05 | The United States Of America As Represented By The Secretary Of The Army | Radar beam steering with remote reflectors/refractors |
| RU2324950C1 (en) * | 2006-12-18 | 2008-05-20 | Открытое акционерное общество "Научно-производственное предприятие "Радар ммс" | Antenna transceiver system of radar |
| US9642020B2 (en) * | 2013-04-09 | 2017-05-02 | Maxlinear, Inc. | Steerable microwave backhaul transceiver |
| US10270506B2 (en) * | 2015-10-05 | 2019-04-23 | Specialized Arrays, Inc. | System and method for widely-spaced coherent transmit arraying using a remote receiver |
| CN112485764B (en) * | 2020-11-05 | 2021-08-31 | 中国人民解放军国防科技大学 | A retroreflector with echo enhancement and phase shift modulation |
| CN212965396U (en) * | 2021-03-16 | 2021-04-13 | 绵阳市游仙区创新科技产业技术研究院 | Positioning system based on millimeter wave radar |
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2022
- 2022-10-08 CN CN202211222833.3A patent/CN115436885B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9620874D0 (en) * | 1996-10-07 | 1996-11-27 | Secr Defence | Reflector |
| CN114442059A (en) * | 2021-12-15 | 2022-05-06 | 中国人民解放军国防科技大学 | A retroreflector with highly dynamic reconfigurable RCS |
| CN218727963U (en) * | 2022-10-08 | 2023-03-24 | 天津先进技术研究院 | Electronic reflector capable of being remotely controlled |
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| CN115436885A (en) | 2022-12-06 |
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