CN207249103U - A kind of displacement radar repeater - Google Patents
A kind of displacement radar repeater Download PDFInfo
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- CN207249103U CN207249103U CN201720258970.0U CN201720258970U CN207249103U CN 207249103 U CN207249103 U CN 207249103U CN 201720258970 U CN201720258970 U CN 201720258970U CN 207249103 U CN207249103 U CN 207249103U
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Abstract
The utility model discloses a kind of displacement radar repeater, and an active refelction antenna array is formed by 1 control signal generator (3), element circuit 1 and N element circuit 2；Control signal generator (3) is used to produce frequency control signal and phase control signal；Element circuit 1 is used to carry out frequency conversion, amplification forwarding to received signal；Element circuit 2 is used to dock collect mail number progress phase shift, frequency conversion, an amplification forwarding；After the radio-frequency carrier signal that the active refelction antenna array comes displacement monitoring radar emission carries out frequency conversion, amplification, phase shift processing, it is set to return to displacement monitoring radar along the direction opposite with incident path.The displacement radar repeater of the utility model has the characteristics that plug and play, without carrying out manual aiming, can save install debug time, and with multi-point displacement at the same time measurement capability, it can be achieved that telemeasurement.
Description
Technical field
The utility model belongs to radar surveying technical field, is related to a kind of displacement radar repeater.
Background technology
Electric force pole tower, skyscraper, bridge, dam, expressway slope etc. are often subjected to displacement deformation in use,
To ensure the safety of these infrastructure, it is necessary to be monitored in real time to it, displacement monitoring radar is one of main monitoring means.
The basic principle of displacement monitoring radar is：Passive corrner reflector is installed on measured object surface to reflect as displacement radar target
Device, displacement monitoring radar is arranged in distal end, by measure radiofrequency signal travel to and fro between displacement monitoring radar and passive corrner reflector it
Between phase difference measure the displacement of corner reflector.Common corner reflector is trihedral corner reflector, respectively by three centers of circle
The isosceles right triangle that angle is 90 degree is formed.There are problems with actual use for this corner reflector：(1) radar acts on
It is closer to the distance：If corner reflector size is small, Radar Cross Section also can be smaller, so can only close-in measurement；Increase
Add the size of corner reflector, its Radar Cross Section can be increased, but limited by mounting condition, it is impossible in actual use
Unrestrictedly increase size；(2) install debug time is longer：In the installation and debugging stage, it is necessary to adjusting angle reflector center axis
It is directed toward so that corner reflector central shaft is overlapped with radar line of sight direction, this needs is taken a long time to be aimed at；(3)
It can not achieve automatic aiming：In actual use, when three-dimensional deformation may occur for testee, installed in testee
On the central shaft of corner reflector be directed toward and will change, deviate radar line of sight direction, if the deviation from larger, then radar line of sight
Displacement measurement error on direction increases, or even cannot obtain correct result；(4) there is no multimetering ability：Corner reflector
Simply merely reflected signal, no signal processing function, displacement monitoring radar cannot distinguish between each corner reflector, it is impossible to realize more
Point measurement.
The content of the invention
In view of this, it is used to substitute existing displacement monitoring radar system the utility model proposes a kind of displacement radar repeater
Passive corrner reflector in system, to overcome shortcoming present in existing scheme.
To reach above-mentioned purpose, the utility model provides following technical solution：
As shown in Figure 1, the utility model discloses a kind of displacement radar repeater, by control signal generator (3), unit electricity
Road 1 and N-1 element circuit 2 form an active refelction antenna array；The active refelction antenna array is to displacement monitoring radar emission
After the radio-frequency carrier signal to come over carries out frequency conversion, amplification, phase shift processing, it is set to be returned to along the direction opposite with incident path
Displacement monitoring radar.
Control signal generator (3) is made of frequency control signal generator and phase control signal generator.Frequency control
It is f that signal generator processed, which is used to produce frequency,iFrequency control signal sf(t).Phase control signal generator is used to calculate and lock
Memory cell circuit 2 and 1 received frequency of element circuit are fRRadio-frequency carrier signal phase difference θ12, generate 3 phase controls
Signal k processed23、k21、 k22。
1 frequency of use control signal s of element circuitf(t) frequency conversion is carried out to its received radio-frequency carrier signal, generates frequency
Respectively (fR+fi) and (fR-fi) two-way radiofrequency signal, forwarded back again after being then amplified.
Element circuit 2 uses wherein 1 phase control signal k23Phase shift processing is carried out to its received radio-frequency carrier signal,
Then frequency control signal s is reusedf(t) frequency conversion is carried out to the signal after phase shift, generation frequency is respectively (fR+fi) and (fR-
fi) two-way radiofrequency signal, this two paths of signals is amplified, then reuses other 2 phase control signal k21、k22Respectively
Forwarded back again after carrying out phase shift processing to this two paths of signals.The phase-shift phase of this 3 phase shifters is-Δ θ12, this 3 phase shifters
Working frequency be respectively：fR、(fR+fi) and (fR-fi)。
The beneficial effects of the utility model are：The displacement radar repeater of the utility model and traditional corner reflector phase
Than there is plug and play, without carrying out manual aiming, install debug time can be saved；It is and same with multi-point displacement
When measurement capability, it can be achieved that telemeasurement.
Brief description of the drawings
In order to make the purpose of this utility model, technical solution and beneficial effect clearer, the utility model provides as follows
Attached drawing illustrates：
Fig. 1 is the circuit system structure diagram of the utility model；
Embodiment
Below in conjunction with attached drawing, the preferred embodiment of the utility model is described in detail.
Fig. 1 is the circuit system structure diagram of the utility model.As shown in the figure, displacement radar repeater is active anti-for one
Antenna array is penetrated, is made of control signal generator (3), element circuit 1 and N-1 element circuit 2.
The control signal generator (3) is by frequency control signal generator (301) and phase control signal generator
(302) form；It is f that frequency control signal generator (301), which is used to produce frequency,iFrequency control signal sf(t), phase controlling
Signal generator (302) is used for computing unit circuit 1 and couples the radio-frequency carrier signal s to comec1(t) coupled with element circuit 2
The radio-frequency carrier signal s comec2(t) the phase difference θ between12, and latch, generate 3 phase control signal k23、k21、
k22, give element circuit 2.
Element circuit 1 is f using the frequency that first antenna (101) reception displacement monitoring radar emission comesRRadio frequency carry
Ripple signal, if phase is θ1；The 3rd bandpass filter (103) and the first low-noise amplifier are sent to through first annular device (102)
(104) handle, through connect signal s is divided into by the first coupler (105)d1(t) and coupled signal sc1(t)；Coupled signal sc1(t)
Control signal generator (3) is sent to, the frequency that the first frequency converter (106) is sent using control signal generator (3) is fiFrequency
Rate control signal sf(t) to through connect signal sd1(t) frequency-conversion processing is carried out, generation frequency is (fR+fi) upper side band radiofrequency signal and
Frequency is (fR-fi) lower sideband radiofrequency signal, two paths of signals, upper side band radiofrequency signal are divided into after the first power splitter (107)
The first bandpass filter (1081), the first power amplifier (1091) processing are sent to, lower sideband radiofrequency signal is sent to the second band logical
Wave filter (1082), the second power amplifier (1092) processing, are then sent to the first power combing by the two paths of signals after processing
Device (110), then first antenna (101) radiation is sent to by first annular device (102) and is gone back.
Element circuit 2 is f using the frequency that the second antenna (201) reception displacement monitoring radar emission comesRRadio frequency carry
Ripple signal, if phase is θ2；The 6th bandpass filter (203) and the second low-noise amplifier are sent to through the second circulator (202)
(204) handle, through connect signal s is divided into by the second coupler (205)d2(t) and coupled signal sc2(t)；Coupled signal sc2(t)
It is sent to control signal generator (3), the phase control signal that the 3rd phase shifter (214) is brought in control signal generator (3)
k23Control under, by through connect signal sd2(t) phase shift-Δ θ12, the second frequency converter (206) sent using control signal generator (3)
Frequency be fiFrequency control signal sf(t) frequency-conversion processing is carried out to the signal after phase shift, generation frequency is (fR+fi) it is upper
Sideband radiofrequency signal and frequency are (fR-fi) lower sideband radiofrequency signal, be divided into two paths of signals after the second power splitter (207), on
Sideband radiofrequency signal be sent to the 4th bandpass filter (2081), the 3rd power amplifier (2091) and the first phase shifter (2151) into
Row processing, lower sideband radiofrequency signal are sent to the 5th bandpass filter (2082), the 4th power amplifier (2092) and the second phase shift
Device (2152) is handled；First phase shifter (2151) is by phase control signal k21Control, the second phase shifter (2152) is by phase
Control signal k22Control, the phase-shift phase of the two phase shifters is-Δ θ12；Then the two paths of signals after processing is sent to second
Power combiner (210), then the second antenna (201) radiation is sent to by the second circulator (202) and is gone back.
Finally illustrate, preferred embodiment above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent
Pipe has been described in detail the utility model by above preferred embodiment, but those skilled in the art should manage
Solution, in the form and details can make it various changes, without departing from the utility model claims book institute
The scope of restriction.
Claims (4)
- A kind of 1. displacement radar repeater, it is characterised in that：A kind of displacement radar repeater is active refelction antenna array, by unit Circuit 1 and N-1 element circuit 2, control signal generator (3) are formed；It is f that control signal generator (3), which is used to produce frequency,i Frequency control signal sf(t), for producing 3 phase control signal k23、k21、k22；1 frequency of use of element circuit control letter Number it is f to its received frequencyRRadio-frequency carrier signal carry out frequency conversion, generation frequency be respectively (fR+fi) and (fR-fi) two-way Radiofrequency signal, forwards back again after being then amplified；Element circuit 2 uses phase control signal k23It is to its received frequency fRRadio-frequency carrier signal carry out phase shift processing, then reuse frequency control signal and frequency conversion carried out to the signal after phase shift, it is raw It is respectively (f into frequencyR+fi) and (fR-fi) two-way radiofrequency signal, this two-way radiofrequency signal is amplified, is then reused Other 2 phase control signal k21、k22Forwarded back again after carrying out phase shift processing to this two-way radiofrequency signal respectively.
- A kind of 2. displacement radar repeater according to claim 1, it is characterised in that：The control signal generator (3) it is made of frequency control signal generator (301) and phase control signal generator (302)；Frequency control signal generator (301) it is f to be used to produce frequencyiFrequency control signal sf(t), phase control signal generator (302) is used for computing unit electricity Road 1 couples the radio-frequency carrier signal s to comec1(t) and element circuit 2 couples the radio-frequency carrier signal s to comec2(t) phase between Potential difference Δ θ12, and latch, generate 3 phase control signal k23、k21、k22, give element circuit 2.
- A kind of 3. displacement radar repeater according to claim 1, it is characterised in that：The element circuit 1 uses the It is f that one antenna (101), which receives the frequency that displacement monitoring radar emission comes,RRadio-frequency carrier signal, if phase is θ1；Through first Circulator (102) is sent to the 3rd bandpass filter (103) and the first low-noise amplifier (104) processing, passes through the first coupler (105) it is divided into through connect signal sd1(t) and coupled signal sc1(t)；Coupled signal sc1(t) control signal generator (3) is sent to, the The frequency that one frequency converter (106) is sent using control signal generator (3) is fiFrequency control signal sf(t) to through connect signal sd1(t) frequency-conversion processing is carried out, generation frequency is (fR+fi) upper side band radiofrequency signal and frequency be (fR-fi) lower sideband radio frequency Signal, is divided into two paths of signals after the first power splitter (107), upper side band radiofrequency signal be sent to the first bandpass filter (1081), First power amplifier (1091) processing, lower sideband radiofrequency signal are sent to the second bandpass filter (1082), the second power amplification Device (1092) processing, is then sent to the first power combiner (110) by the two-way radiofrequency signal after processing, then by first annular Device (102) is sent to first antenna (101) radiation and goes back.
- A kind of 4. displacement radar repeater according to claim 1, it is characterised in that：The element circuit 2 uses the It is f that two antennas (201), which receive the frequency that displacement monitoring radar emission comes,RRadio-frequency carrier signal, if phase is θ2；Through second Circulator (202) is sent to the 6th bandpass filter (203) and the second low-noise amplifier (204) processing, passes through the second coupler (205) it is divided into through connect signal sd2(t) and coupled signal sc2(t)；Coupled signal sc2(t) control signal generator (3) is sent to, the The phase control signal k that three phase shifters (214) are brought in control signal generator (3)23Control under, by through connect signal sd2 (t) phase shift-Δ θ12, the frequency that the second frequency converter (206) is sent using control signal generator (3) is fiFrequency control signal sf(t) frequency-conversion processing is carried out to the signal after phase shift, generation frequency is (fR+fi) upper side band radiofrequency signal and frequency be (fR- fi) lower sideband radiofrequency signal, two paths of signals is divided into after the second power splitter (207), upper side band radiofrequency signal is sent to the 4th band Bandpass filter (2081), the 3rd power amplifier (2091) and the first phase shifter (2151) are handled, lower sideband radiofrequency signal The 5th bandpass filter (2082), the 4th power amplifier (2092) and the second phase shifter (2152) is sent to be handled；First Phase shifter (2151) is by phase control signal k21Control, the second phase shifter (2152) is by phase control signal k22Control, the two The phase-shift phase of phase shifter is-Δ θ12；Then the two paths of signals after processing is sent to the second power combiner (210), then passed through Second circulator (202) is sent to the second antenna (201) radiation and goes back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258970.0U CN207249103U (en) | 2017-03-16 | 2017-03-16 | A kind of displacement radar repeater |
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| CN201720258970.0U CN207249103U (en) | 2017-03-16 | 2017-03-16 | A kind of displacement radar repeater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023014658A1 (en) * | 2021-08-05 | 2023-02-09 | Qualcomm Incorporated | Signal forwarding |
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2017
- 2017-03-16 CN CN201720258970.0U patent/CN207249103U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023014658A1 (en) * | 2021-08-05 | 2023-02-09 | Qualcomm Incorporated | Signal forwarding |
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