CN108051867A - A kind of anti-interference millimeter wave detector of binary channels - Google Patents
A kind of anti-interference millimeter wave detector of binary channels Download PDFInfo
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- CN108051867A CN108051867A CN201711148450.5A CN201711148450A CN108051867A CN 108051867 A CN108051867 A CN 108051867A CN 201711148450 A CN201711148450 A CN 201711148450A CN 108051867 A CN108051867 A CN 108051867A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/005—Prospecting or detecting by optical means operating with millimetre waves, e.g. measuring the black losey radiation
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Abstract
The present invention proposes a kind of anti-interference millimeter wave detector of binary channels, it is characterized in that, including millimeter wave channel element, power splitter, exchange low noise amplification passage, direct current low noise amplification passage, detection module, target identification circuit, local oscillator module, detection module analyzes and determines the direct current signal of forward direction amplification, when wave character is consistent with interference signal feature, detection module does not export the signal of identification for one to target identification circuit, and changes input to the voltage of local oscillator module；When target identification circuit does not receive the signal for not exporting identification, the amplitude and width of high pulse signal in amplified AC signal are analyzed, and the signal received and identification storehouse are compared, exports final identification signal.The anti-interference millimeter wave detector of binary channels of the present invention adds direct current channel module compared to traditional millimeter wave detector, can effectively exclude influence of the active interference to millimeter wave detector.
Description
Technical field
The present invention relates to target acquisition fields, particularly a kind of anti-interference millimeter wave detector of binary channels.
Background technology
Millimeter wave detector is the device for detecting armored target on battlefield, and millimeter wave is located at microwave band and infrared waves
Among section, wavelength is 1mm to 10mm, and frequency is from 300GHz to 30GHz.At present using tank as main representative on modern battlefield
Various armored target is occupying increasingly consequence, and starts leading Battlefield.Such armored target is implemented accurate
Effective strike becomes the main direction of development of current ammunition weapon, and at the same time, various perturbation techniques are also flourishing, this
Battlefield requirement can not then be met using traditional millimeter wave detector by also implying that.
Traditional millimeter wave detector can provide identification signal when detecting target only comprising communication channel module, however
When active interference effect is to the detector, which can provide identification signal, and the millimeter wave detector made is to mesh
Target recognition capability substantially reduces, and causes it that can not effectively be identified to armored target.
The content of the invention
The present invention proposes a kind of anti-interference millimeter wave detector of binary channels.
Realize that technical solution of the invention is：A kind of anti-interference millimeter wave detector of binary channels is believed including millimeter wave
Road component, power splitter, exchange low noise amplification passage, direct current low noise amplification passage, detection module, target identification circuit, sheet
It shakes module, wherein：
Millimeter wave channel element receives the millimeter-wave signal from measured piece and the local oscillation signal progress of local oscillator module output
Mixing, and after enhanced processing after output to power splitter；
Power splitter will treated that millimeter-wave signal is divided into two-way millimeter-wave signal through millimeter wave channel element, all the way millimeter
Ripple signal is inputted to exchange low noise amplification passage, and another way millimeter-wave signal is inputted to direct current low noise amplification passage；
Direct current low noise amplification passage retains the direct current signal in millimeter-wave signal and is inputted after being carried out positive amplification
Detection module；
Exchange low noise amplification passage retains the AC signal in millimeter-wave signal and is inputted after being carried out positive amplification
Target identification circuit；
Detection module analyzes and determines the direct current signal of forward direction amplification, when wave character is consistent with interference signal feature
When, detection module does not export the signal of identification for one to target identification circuit, while changes input to the voltage of local oscillator module；
When target identification circuit does not receive the signal for not exporting identification, analyze high impulse in amplified AC signal and believe
Number amplitude and width and by itself and identification storehouse compare, export final identification signal.
Preferably, millimeter wave channel element includes sequentially connected antenna, frequency mixer, intermediate frequency amplifier, square law detection
Device, low-noise amplifier.
Preferably, detection module includes input module, output module, STM32 processing and control modules and download module, direct current
The direct current signal of low noise amplification passage output is inputted through input module to STM32 processing and control modules, STM32 processing control moulds
Root tuber is it is judged that result exports corresponding signal to VCO amplifying circuits and target identification circuit, the download mould from output module
Block is used for STM32 processing and control module Loading Control programs.
Preferably, direct current low noise amplification passage includes sequentially connected low noise amplification chip AD8599 and bandwidth is amplified
The input terminal of device OP484, the low noise amplification chip AD8599 and the output terminal of power splitter connect, the bandwidth amplifier
The input terminal of OP484 is connected output terminal and the detection of bandwidth amplifier OP484 with the output terminal of low noise amplification chip AD8599
The input terminal connection of module.
Compared with prior art, the present invention its remarkable advantage is：1) the anti-interference millimeter wave detector of binary channels of the invention
Direct current channel module is added compared to traditional millimeter wave detector, can effectively exclude active interference to millimeter wave detector
It influences；2) the anti-interference millimeter wave detector of binary channels of the invention compares traditional millimeter wave detector to the discrimination of armored target
Higher can effectively find armored target and implement to hit；3) present invention selects low-power chip, substantially reduces the work(of the present invention
Consumption adequately achieves the design concept of low-power consumption.
Further detailed description is done to the present invention below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is a kind of system global structure block diagram of the anti-interference millimeter wave detector of binary channels of the present invention.
Fig. 2 is direct current low noise amplification channel circuit schematic diagram of the present invention.
Fig. 3 is the work flow diagram of detection module of the present invention and VCO amplifying circuits.
Fig. 4 is the structure chart of detection module of the present invention.
Fig. 5 is the circuit diagram of detection module of the present invention.
When Fig. 6 detects armored target for a kind of anti-interference millimeter wave detector of binary channels of the present invention in direct current channel module
Signal waveform.
When Fig. 7 detects active interference for a kind of anti-interference millimeter wave detector of binary channels of the present invention in direct current channel module
Signal waveform.
Specific embodiment
A kind of anti-interference millimeter wave detector of binary channels, including millimeter wave channel element, power splitter, exchange low noise amplification
Passage, direct current low noise amplification passage, detection module, target identification circuit, local oscillator module, wherein：
Millimeter wave channel element receives the millimeter-wave signal from measured piece and the local oscillation signal progress of local oscillator module output
Mixing, and after enhanced processing after output to power splitter；
Power splitter will treated that millimeter-wave signal is divided into two-way millimeter-wave signal through millimeter wave channel element, all the way millimeter
Ripple signal is inputted to exchange low noise amplification passage, and another way millimeter-wave signal is inputted to direct current low noise amplification passage；
Direct current low noise amplification passage retains the direct current signal in millimeter-wave signal and is inputted after being carried out positive amplification
Detection module；
Exchange low noise amplification passage retains the AC signal in millimeter-wave signal and is inputted after being carried out positive amplification
Target identification circuit；
Detection module analyzes and determines the direct current signal of forward direction amplification, when wave character is consistent with interference signal feature
When, detection module does not export the signal of identification for one to target identification circuit, while changes input to the voltage of local oscillator module；
When target identification circuit does not receive the signal for not exporting identification, analyze high impulse in amplified AC signal and believe
Number amplitude and width and by itself and identification storehouse compare, export final identification signal.
In further embodiment, millimeter wave channel element include sequentially connected antenna, frequency mixer, intermediate frequency amplifier,
Square law wave detector, low-noise amplifier.
In further embodiment, detection module include input module, output module, STM32 processing and control modules and under
Module is carried, the direct current signal of direct current low noise amplification passage output is inputted through input module to STM32 processing and control modules,
STM32 processing and control modules export corresponding signal to VCO amplifying circuits and target identification according to judging result from output module
Circuit, the download module are used for STM32 processing and control module Loading Control programs.
In further embodiment, direct current low noise amplification passage includes sequentially connected low noise amplification chip AD8599
With bandwidth amplifier OP484, the input terminal of the low noise amplification chip AD8599 and the output terminal of power splitter connect, the band
The input terminal of wide amplifier OP484 is connected the output of bandwidth amplifier OP484 with the output terminal of low noise amplification chip AD8599
End is connected with the input terminal of detection module.
With reference to shown in Fig. 2, the anti-interference millimeter wave detector direct current low noise amplification passage of binary channels of the invention includes low
Noise amplification chip AD8599 and bandwidth amplifier OP484, the two level output port of low noise amplification chip AD8599 are linked into
The input terminal of bandwidth amplifier OP484.The signal of power splitter output carries out two-stage amplification by low noise amplification chip AD8599
After export and give bandwidth amplifier OP484, which is filtered and amplifies using bandwidth amplifier OP484, amplifies through bandwidth
Device OP484 is filtered and amplified signal output enters detection module.
The output terminal of power splitter is connected with the second pin-INA of low noise amplification chip AD8599, the output terminal of power splitter
Simultaneously with second resistance R5One end connection, second resistance R5The other end and low noise amplification chip AD8599 second pin-
INA connections, second resistance R5The other end simultaneously with first resistor R1One end connection, first resistor R1The other end simultaneously with
The first pin outA connections of low noise amplification chip AD8599, the first pin outA of low noise amplification chip AD8599 is simultaneously
For level-one output port out1, the 3rd pin+INA and 3rd resistor R of low noise amplification chip AD859922One end connection,
3rd resistor R22Other end ground connection, the 4th pin-V of low noise amplification chip AD8599 is connected with -5V power supplys, and low noise is put
The 4th pin-V of large chip AD8599 is connected simultaneously with one end of the first capacitance C1, the second capacitance C2, the first capacitance C1, second
The other end ground connection of capacitance C2；The 8th pin+V of low noise amplification chip AD8599 is connected with+5V power supplys, while passes through
Three capacitance E14, the 4th capacitance C25, the 5th capacitance C15 are connected to ground, the 7th pin-outB of low noise amplification chip AD8599
It is connected with one end of the first capacitance E22, the other end of the first capacitance E22 is level-one output port out1, low noise amplification chip
The 7th pin-outB of AD8599 simultaneously with the 4th resistance R4One end connection, the 4th resistance R4The other end and low noise amplification
The 6th pin-INB connections of chip AD8599, the 4th resistance R4The other end simultaneously with the 5th resistance R7One end connection, the 5th
Resistance R7The other end be low noise amplification chip AD8599 two level output port out2, low noise amplification chip AD8599's
5th pin-INB is connected to ground by the 5th resistance R8.
With reference to shown in Fig. 3, the detection module of the anti-interference millimeter wave detector of binary channels of the invention is micro- using STM32 series
Controller, detection module output primary voltage, two different voltage values of 4.7V and 7V are exported extremely after the amplification of VCO amplifying circuits
Local oscillator module exports two fixed local frequency 32.4GHz and 34.4Gz, two local frequency intervals by local oscillator module
2GHz.Microcontroller carries out A/D acquisitions to the signal that direct current low noise amplification passage exports, and it is defeated to judge to carry out glide filter
Whether the amplitude and width of the signal entered are consistent with interference signal feature, when inconsistent with interference signal feature, again to defeated
Enter signal and carry out A/D acquisitions and judgement；When input signal is consistent with interference signal feature, change output voltage, then by VCO
Amplifying circuit is amplified output so that and the frequency of local oscillator changes, while to target identification circuit sending signal so that mesh
Mark identification circuit does not export identification signal.
In active interference effect, direct current channel is input to after intermediate frequency amplifier amplification and square law detector
In signal retain direct current signal, amplify by forward direction, the variation tendency of waveform is high impulse, this is mainly by " heat " of decoy
Target property causes, and the A/D modules of the STM32 microcontrollers in module are acquired signal, analyze and determine after testing, waveform
Feature is consistent with interference signal feature, and can determine whether to detect is active decoy, and detection module is by controlling VCO amplifying circuits
Export another voltage value, the local oscillator made changes, due to detector bandwidth be 50MHz~550MHz, active interference signal
It will effectively be filtered out；When detecting armored target, signal intensity trend is low pulse in direct current channel module, and output is not
It is impacted；Communication channel module then exports identification signal, shows to detect target.
With reference to Fig. 4 and Fig. 5, the detection module of the anti-interference millimeter wave detector of binary channels of the present invention of the invention mainly by
Input module, output module, STM32 processing and control modules, download module and power module composition.
With reference to Fig. 6, when arriving real armored target of the anti-interference millimeter wave detector scanning of binary channels of the invention, signal
After intermediate frequency amplifier and square law wave detector, all the way into direct current channel module, since " cold " target of armored target is special
Property and circuit positive amplification, input signal by AD8599 low-noise amplifiers amplify 200 times after using OP484 into
The filtered signal of row is the low pulse signal comprising direct current, and output is unaffected；The identification electricity of another way communication channel module
Road then normally judges output identification signal, and this increased direct current channel module of design will not generate shadow to the detection of real goal
It rings.
With reference to Fig. 7, during the decoy for arriving active interference of binary channels of the invention anti-interference millimeter wave detector scanning, believe
Number after intermediate frequency amplifier and square law wave detector, all the way into direct current channel module, due to " heat " target of decoy
Characteristic causes the variation tendency of direct current channel mould signal in the block, and for high impulse, wave character is consistent with interference signal feature, sentences
The target of disconnected scanning is active decoy, by the way that VCO amplifying circuits is controlled to export different voltage values, passes through VCO and frequency multiplier
Four times of frequencys multiplication change the local frequency of front ends of millimeter waves, while to one signal of identification circuit module, make identification circuit module not
Export identification signal.
So as to which the anti-interference millimeter wave detector of binary channels disclosed by the invention can effectively exclude active interference to millimeter wave
The influence of detector, it is effective to find armored target and implement to hit.
It is described in more detail with reference to embodiment.
Embodiment 1
Its output frequency is 8.1GHz, 8.6GHz to voltage access VCO (voltage controlled oscillator) afterwards, by four times of frequencys multiplication of frequency multiplier
It is respectively 32.4GHz, 34.4GHz to export local frequency respectively afterwards.When local oscillator module local frequency takes 32.4GHz, bandwidth range
For 31.9GHz~32.9GHz active interference effect when the millimeter wave detector, identification circuit judges mesh in communication channel module
Real goal is designated as, signal intensity trend is high impulse in direct current channel module, and wave character is consistent with interference signal feature；It visits
It surveys device judgement and detects active decoy, control VCO amplifying circuits export different voltage values, pass through four times of VCO and frequency multiplier
Frequency multiplication output local oscillator is 34.4GHz, while to one signal of identification circuit, identification circuit is made not export identification signal, due to visiting
The bandwidth range of device is surveyed as 50MHz~550MHz, detectable range of target frequencies is 33.9GHz~34.9GHz, and
The active interference of 31.9GHz~32.9GHz is filtered out, this can effectively exclude active interference, realize anti-jamming effectiveness.
Claims (5)
1. a kind of anti-interference millimeter wave detector of binary channels, which is characterized in that including millimeter wave channel element, power splitter, exchange
Low noise amplification channel, direct current low noise amplification passage, detection module, target identification circuit, local oscillator module, wherein：
The millimeter wave channel element receives the millimeter-wave signal from measured piece and the local oscillation signal progress of local oscillator module output
Mixing, and exported after enhanced processing to power splitter；
The power splitter will treated that millimeter-wave signal is divided into two-way millimeter-wave signal through millimeter wave channel element, all the way millimeter
Ripple signal is inputted to exchange low noise amplification passage, and another way millimeter-wave signal is inputted to direct current low noise amplification passage；
The direct current low noise amplification passage retains the direct current signal in millimeter-wave signal and is inputted after being carried out positive amplification
Detection module；
The exchange low noise amplification passage retains the AC signal in millimeter-wave signal and is inputted after being carried out positive amplification
Target identification circuit；
The detection module analyzes and determines the direct current signal of forward direction amplification, when wave character is consistent with interference signal feature
When, detection module does not export the signal of identification for one to target identification circuit, while changes input to the voltage of local oscillator module；
When the target identification circuit does not receive the signal for not exporting identification, analyze high impulse in amplified AC signal and believe
Number amplitude and width and by itself and identification storehouse compare, export final identification signal.
2. the anti-interference millimeter wave detector of binary channels according to claim 1, which is characterized in that the millimeter wave channel group
Part includes sequentially connected antenna, frequency mixer, intermediate frequency amplifier, square law wave detector, low-noise amplifier.
3. the anti-interference millimeter wave detector of binary channels according to claim 1, which is characterized in that the detection module includes
Input module, output module, STM32 processing and control modules and download module, the direct current letter of direct current low noise amplification passage output
It number is inputted through input module to STM32 processing and control modules, STM32 processing and control modules are defeated from output module according to judging result
Go out corresponding signal to VCO amplifying circuits and target identification circuit, the download module is used to add to STM32 processing and control modules
Carry control program.
4. the anti-interference millimeter wave detector of binary channels according to claim 1, which is characterized in that the direct current low noise is put
Big passage includes sequentially connected low noise amplification chip AD8599 and bandwidth amplifier OP484, the low noise amplification chip
The input terminal of AD8599 and the output terminal of power splitter connect, input terminal and the low noise amplification core of the bandwidth amplifier OP484
The output terminal of output terminal connection bandwidth amplifier OP484 and the input terminal of detection module of piece AD8599 connects.
5. the anti-interference millimeter wave detector of binary channels according to claim 4, which is characterized in that the low noise amplification core
The second pin (- INA) of piece AD8599 is connected with the output terminal of power splitter, the output terminal of power splitter simultaneously with second resistance (R5)
One end connection, second resistance (R5) the other end be connected with the second pin (- INA) of low noise amplification chip AD8599,
Two resistance (R5) the other end simultaneously with first resistor (R1) one end connection, first resistor (R1) the other end simultaneously and low noise
The first pin (outA) connection of sound amplification chip AD8599, the first pin (outA) of low noise amplification chip AD8599 is simultaneously
For level-one output port (out1), the 3rd pin (+INA) and the 3rd resistor (R of low noise amplification chip AD859922) one end
Connection, 3rd resistor (R22) other end ground connection, the 4th pin (- V) of low noise amplification chip AD8599 connects with -5V power supplys
It connects, the 4th pin-V of low noise amplification chip AD8599 while respectively one end with the first capacitance (C1), the second capacitance (C2)
Connection, the first capacitance (C1), the other end ground connection of the second capacitance (C2)；Low noise amplification chip AD8599 the 8th pin (+
V) it is connected with+5V power supplys, while is connected to ground by the 3rd capacitance (E14), the 4th capacitance (C25), the 5th capacitance (C15), it is low
The 7th pin (- outB) of noise amplification chip AD8599 is connected with one end of the first capacitance (E22), the first capacitance (E22)
The other end be level-one output port (out1), the 7th pin (- outB) of low noise amplification chip AD8599 at the same with the 4th electricity
Hinder (R4) one end connection, the 4th resistance (R4) the other end and low noise amplification chip AD8599 the 6th pin (- INB) even
It connects, the 4th resistance (R4) the other end simultaneously with the 5th resistance (R7) one end connection, the 5th resistance (R7) the other end be low noise
The two level output port (out2) of sound amplification chip AD8599, the 5th pin (- INB) of low noise amplification chip AD8599 pass through
5th resistance (R8) is connected to ground.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021121124A1 (en) * | 2019-12-17 | 2021-06-24 | 中兴通讯股份有限公司 | Local oscillator control method and system, signal transceiving method, and terminal |
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