CN115436885A - Electronic reflector capable of being remotely controlled - Google Patents
Electronic reflector capable of being remotely controlled Download PDFInfo
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- CN115436885A CN115436885A CN202211222833.3A CN202211222833A CN115436885A CN 115436885 A CN115436885 A CN 115436885A CN 202211222833 A CN202211222833 A CN 202211222833A CN 115436885 A CN115436885 A CN 115436885A
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- remote control
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- reflector
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- 230000003321 amplification Effects 0.000 claims abstract description 27
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 27
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 230000010363 phase shift Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000021615 conjugation Effects 0.000 claims description 6
- 241000726103 Atta Species 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000003491 array Methods 0.000 description 2
- 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
Images
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
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- 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 present application relates to a remotely controllable electronic reflector. The reflector includes: the system comprises an antenna array, an isolation design, a plurality of controllable phase-shifting amplification modules and a remote control system; the antenna array comprises a receiving array and a transmitting array; the corresponding array elements of the receiving array and the transmitting array form a group of receiving and transmitting array element pairs, and the isolation design is positioned between the receiving array and the transmitting array of the antenna array; the controllable phase shift amplification module comprises an amplifier and a phase shifter and is used for adjusting the gain and the phase shift between each group of transmitting and 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 reflector switch state, controlling the echo signal amplitude and phase modulation; 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 remotely controlled.
Background
The reflector mainly has the functions of focusing radar wave signals and enabling the radar wave signals to be reversely reflected along the incident direction, so that the energy of backscattering echo signals can be enhanced, and the effect of regulating and controlling the radar target characteristics is achieved. The commonly used reflectors include corner reflectors, luneberg lenses, direction retrospective antenna arrays, etc., but the RCS characteristics of the reflectors only change along with the change of the structure and the size of the reflectors, and once the reflectors are processed and shaped, the RCS characteristics of the reflectors are fixed and are easy to distinguish by a radar identification system. The problem can be solved by the appearance of the modulatable electronic reflector, the RCS change characteristic of a real target can be simulated, and the modulatable electronic reflector can be used as a fake target or a radar decoy to play a role in protecting the real target; still possess the phase modulation function, be difficult to be distinguished by radar identification system.
However, although the current reflectors achieve the modulation function of the amplitude and the phase of the signal of the radar target echo to different degrees, and play a role in protecting a real target, the current reflectors do not have the capability of remotely controlling the working state of the reflectors, and cannot be well applied to working scenes where people cannot contact with the reflectors in a close distance, such as severe environments, complex terrains and the like.
Disclosure of Invention
In view of the above, there is a need to provide a modulatable electronic reflector that can be remotely controlled.
An electronic reflector capable of being remotely controlled, wherein the reflector comprises an antenna array, an isolation design, a controllable phase-shifting amplification module and a remote control system;
the antenna array comprises a receiving array and a transmitting array; the corresponding array elements of the receiving array and the transmitting array form a group of transmitting-receiving array element pairs, and all the transmitting-receiving array element pairs meet the phase conjugation relation;
the isolation design is positioned between a receiving array and a transmitting array of the antenna array;
the controllable phase-shifting amplification module comprises an amplifier and a phase shifter and is used for adjusting the gain and the phase shift between each group of transmitting and 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 reflector switch state, controlling the echo signal amplitude and phase modulation; the remote control command receiver is located inside the reflector; 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 pairs of transceiving array elements is kept the same.
In one embodiment, the isolation design has an isolation degree greater than the maximum gain value of the amplifier.
In one embodiment, the number of controllable phase-shifting amplification modules, the array element number of a receiving array of an antenna array and the array element number of a transmitting array of the antenna array are the same; 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 remote control means including, but not limited to, radio remote control, infrared remote control, laser remote control, microwave remote control, and the like.
In one embodiment, the phase shifter of the controllable phase shifting amplification module and the amplifier are both controlled by the same control signal generated by the remote control command receiver.
In one embodiment, controlling the amplitude and phase modulation of the echo signal includes controlling the modulation frequency, timing, and duty cycle of the signal.
According to the electronic reflector capable of being remotely controlled, the phase of an echo can be programmed and configured by adding the controllable phase-shifting amplification module, the gain and the phase shift between each group of receiving and transmitting array element pairs are adjusted, the modulation function of the signal amplitude and the phase of a radar target echo is realized, meanwhile, the remote control system is added, the remote control of the reflector on-off state, the amplitude and the phase of the echo signal and the like is realized, and in the regulation and control application of radar target characteristics, the electronic reflector can be remotely controlled to realize the amplitude and phase modulation of the echo signal, simulate the RCS change characteristics of a real target and change the phase characteristics of the echo signal; the modulable electronic reflector can be arranged in working scenes such as severe environment and complex terrain which cannot be controlled by people in a short distance, and the change of the working state of the modulable electronic reflector is only required to be controlled remotely; in addition, the remote control of the working state of the reflector is realized through the remote control signal transmitter, so that the control process is simpler.
Drawings
FIG. 1 is a schematic diagram of a remotely controllable electronic reflector in one embodiment;
fig. 2 is a schematic flow chart illustrating a process for remotely controlling an electronic reflector according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in FIG. 1, there is provided a remotely controllable electronic 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; the corresponding array elements of the receiving array and the transmitting array form a group of transmitting-receiving array element pairs, and all the transmitting-receiving 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 amplification module 3 comprises an amplifier 31 and a phase shifter 32, and is used for adjusting the gain and phase shift between each group of transmit-receive array element pairs;
the remote control system comprises a remote control signal transmitter 7 and a remote control command receiver 6, and is used for realizing a remote control function; the remote control function comprises controlling the reflector switch state, controlling the echo signal amplitude and phase modulation; the remote control command receiver 6 is located inside the reflector; the remote control signal transmitter 7 is used for transmitting remote control commands.
In the specific implementation process, the antenna array 1 is connected to the controllable phase-shifting amplification module 3 through the transmission line 21, the transmission line 22, the transmission line 23 and the transmission line 24, the transmission line 21 and the transmission line 22 connect the antenna elements on the receiving antenna array 11 with the input end of the controllable phase-shifting amplification module 3, the transmission line 23 and the transmission line 24 connect the antenna elements on the transmitting antenna array 12 with the output end of the controllable phase-shifting amplification module 3, the total length of the transmission lines connecting each group of receiving antenna elements and transmitting antenna elements (that is, the length of the transmission line 21 and the transmission line 22 is the same as the length of the transmission line 23 and the transmission line 24), and the receiving antenna array 11 and the transmitting antenna array 12 are the same 4 × 4 planar antenna array. In other embodiments, different antenna elements, different numbers of 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 is, the larger the number of antenna elements is. The bandwidth and the beam width of the antenna array element determine the bandwidth and the space coverage range of the retro-reflector, 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 amplification 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 amplification module 3 through a transmission line 23, the total length of the transmission lines between each group of receiving antenna array elements and each group of transmitting antenna array elements (namely the sum of the lengths of the transmission line 21 and the transmission line 23) is kept consistent, phase conjugation is realized, one controllable phase-shifting amplification module 3 is loaded between each group of array elements, and 16 antenna array elements are obtained in total; each controllable phase shift amplification module 3 comprises an amplifier 31 and a phase shifter 32 therein, and is used for adjusting the gain and phase shift between each group of transmit-receive array element pairs, thereby realizing the modulation function of the signal amplitude and phase of the radar target echo.
The control signal output by the remote control command receiver 6 can respectively control the amplifier, the phase shifter and the reflector power switch 5 in the controllable phase-shifting amplification module 3 to rapidly switch states; all amplifiers of the controllable phase-shifting amplification module 3 are controlled by the same control signal generated by the remote control command receiver 6, so as to ensure that the gains of each group of array elements of the receiving antenna array 11 and the transmitting antenna array 12 are the same; the phase shifters of all the controllable phase shift amplifying modules 3 are controlled by the same control signal generated by the remote control command receiver 6 to ensure that the receiving antenna array 11 and the transmitting antenna array 12 are always in a phase conjugate state, so that the direction of the reflected beam is consistent with the direction of the incident beam of the radar wave.
Taking the above embodiment as an example, the remote control function according to the present invention will be described in detail below. The remote control system added to the reflector consists of a remote control signal transmitter 7 and a remote control command receiver 6; the remote control command receiver 6 outputs a corresponding control signal by receiving a remote control command transmitted by the remote control signal transmitter; the control signal can respectively control the amplifier, the phase shifter, the power switch and the like in the controllable phase-shifting amplification module. Different buttons on the remote control signal transmitter 7 correspondingly realize different remote control functions, including control of the reflector on-off state, control of the amplitude and phase modulation of the echo signal, and the like.
For clarity of illustration, fig. 2 shows the workflow of the remote control function that can be implemented by the reflector of the present invention. Different buttons on the remote control signal transmitter 7 control the transmission of different remote control commands, 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 frequency, the time sequence, the duty ratio and other characteristics of the output control signal of the receiving circuit by transmitting different remote control commands; the receiver correspondingly changes the frequency, the time sequence or the duty ratio of the output control signal according to the difference of the received remote control commands, and the control signal further completes multiple items of control on the reflector switch state, the echo signal amplitude, the phase modulation and the like.
In one embodiment, the total length of the transmission line between all pairs of transceiving array elements is kept the same.
In a specific embodiment, the total length of the transmission lines between each group of array elements is consistent, and phase conjugation relations between all the transmitting and receiving array element pairs are satisfied.
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 self-excitation of the loop can be avoided.
In one embodiment, the number of controllable phase-shifting amplification modules, the array element number of a receiving array of an antenna array and the array element number of a transmitting array of the antenna array are the same; 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 remote control means including, but not limited to, radio remote control, infrared remote control, laser remote control, microwave remote control, and the like.
In one embodiment, the phase shifter of the controllable phase shifting amplification 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 controllable phase shift amplification modules are controlled by the same control signal generated by the remote control command receiver, so as to ensure that the phase delays of each array element group between the receiving antenna array and the transmitting antenna array are consistent, and the receiving and transmitting antenna arrays are 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 the phase conjugate;
the amplifiers of all controllable phase-shifting amplification 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 amplitude and phase modulation of the echo signal includes controlling the modulation frequency, timing, and duty cycle of the signal.
It should be understood that, although the steps in the flowchart of fig. 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a portion of the steps in fig. 2 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A remotely controllable electronic reflector, said reflector comprising: the system comprises an antenna array, an isolation design, a controllable phase-shifting amplification module and a remote control system;
the antenna array comprises a receiving array and a transmitting array; the corresponding array elements of the receiving array and the transmitting array form a group of transmitting-receiving array element pairs, and all the transmitting-receiving 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 amplification module comprises an amplifier and a phase shifter and is used for adjusting the gain and the phase shift between each group of transmitting and 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 reflector switch state, controlling the echo signal amplitude and phase modulation; the remote control command receiver is located inside the reflector; the remote control signal transmitter is used for transmitting a remote control command.
2. The electronic reflector of claim 1, wherein the total length of the transmission lines between all of the transceiver array element pairs is uniform.
3. The electronic reflector of claim 1, wherein the isolation design has an isolation greater than a maximum gain value of the amplifier.
4. The electronic reflector of any of claims 1 to 3, wherein the number of controllable phase-shifting amplification modules, the number of array elements of the receiving array of the antenna array and the number of array elements of the transmitting array of the antenna array are the same; the antenna array is preferably a Van Atta antenna array.
5. The electronic reflector of claim 3, wherein the remote control system is capable of generating either an analog signal or a digital signal as the control signal.
6. The electronic reflector of claim 5, wherein the remote control system is capable of remote control including, but not limited to, radio remote control, infrared remote control, laser remote control, microwave remote control, and the like.
7. The electronic reflector of claim 1, wherein the phase shifter and the amplifier of the controllable phase-shifting amplification module are both controlled by the same control signal generated by the remote control command receiver.
8. The electronic reflector of claim 1, wherein the control echo signal amplitude and phase modulation comprises a modulation frequency, timing, and duty cycle of a control signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211222833.3A CN115436885A (en) | 2022-10-08 | 2022-10-08 | Electronic reflector capable of being remotely controlled |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211222833.3A CN115436885A (en) | 2022-10-08 | 2022-10-08 | Electronic reflector capable of being remotely controlled |
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| CN115436885A true CN115436885A (en) | 2022-12-06 |
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| CN202211222833.3A Pending CN115436885A (en) | 2022-10-08 | 2022-10-08 | Electronic reflector capable of being remotely controlled |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9620874D0 (en) * | 1996-10-07 | 1996-11-27 | Secr Defence | Reflector |
| 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 |
| US20140347222A1 (en) * | 2013-04-09 | 2014-11-27 | Maxlinear, Inc. | Steerable microwave backhaul transceiver |
| US20170099091A1 (en) * | 2015-10-05 | 2017-04-06 | Specialized Arrays, Inc. | System and method for widely-spaced coherent transmit arraying using a remote receiver |
| CN112485764A (en) * | 2020-11-05 | 2021-03-12 | 中国人民解放军国防科技大学 | Retro-reflector with echo enhancement and phase shift modulation functions |
| 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 |
| CN114442059A (en) * | 2021-12-15 | 2022-05-06 | 中国人民解放军国防科技大学 | Retro-reflector with high 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 |
-
2022
- 2022-10-08 CN CN202211222833.3A patent/CN115436885A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9620874D0 (en) * | 1996-10-07 | 1996-11-27 | Secr Defence | Reflector |
| 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 |
| US20140347222A1 (en) * | 2013-04-09 | 2014-11-27 | Maxlinear, Inc. | Steerable microwave backhaul transceiver |
| US20170099091A1 (en) * | 2015-10-05 | 2017-04-06 | Specialized Arrays, Inc. | System and method for widely-spaced coherent transmit arraying using a remote receiver |
| CN112485764A (en) * | 2020-11-05 | 2021-03-12 | 中国人民解放军国防科技大学 | Retro-reflector with echo enhancement and phase shift modulation functions |
| 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 |
| CN114442059A (en) * | 2021-12-15 | 2022-05-06 | 中国人民解放军国防科技大学 | Retro-reflector with high 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 |
Non-Patent Citations (1)
| Title |
|---|
| 闫秀刚: "导轨直线度无线自动精密光电检测技术研究", 《中国优秀硕士学位论文全文数据库 (工程科技Ⅱ辑)》, 15 March 2019 (2019-03-15), pages 031 - 64 * |
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