CN107991652A - A kind of main passive millimeter wave compound detection system of two waveband - Google Patents
A kind of main passive millimeter wave compound detection system of two waveband Download PDFInfo
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- CN107991652A CN107991652A CN201711316549.1A CN201711316549A CN107991652A CN 107991652 A CN107991652 A CN 107991652A CN 201711316549 A CN201711316549 A CN 201711316549A CN 107991652 A CN107991652 A CN 107991652A
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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
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Abstract
The invention discloses a kind of main passive millimeter wave compound detection system of two waveband, it is related to millimeter wave detection technical field, including：Double-fed source antenna, the passive T/R components of two waveband master, passive channel signal detection circuit, active channels signal deteching circuit, main cpm signal fusion treatment circuit, the active channels of the active-passive composite detection system of the present invention and passive passage are worked at the same time in two different-wavebands, radio-frequency front-end uses the double-fed source antenna and the passive T/R components of two waveband master of transceiver, passive channel signal detection uses the high IF amplifier circuit in broadband, active channels signal detection uses arrowband zero intermediate frequency circuit, on the basis of 6mm wave bands active signal all the time sensitive target, it is adequately isolated the passive information of 3mm wave bands, avoid the passive information of the same band master interfere with each other and the interference of signal processing, enhance the interference free performance of system, improve target identification probability.
Description
Technical field
The present invention relates to millimeter wave detection technical field, and in particular to a kind of main passive millimeter wave complex probe system of two waveband
System.
Background technology：
Milimeter wave detection system is divided into active detection system, Passive Detention System and active-passive composite formula detection system
System.Active millimeter wave detection system --- i.e. millimetre-wave radar, be using target to millimeter wave reflection (or for it is secondary dissipate
Penetrate) phenomenon finds target and locates have operating distance farther out, and obtain abundant target information.But in low coverage
During from work, since target letter structure is complex, easily produced using radar sensor " angle sudden strain of a muscle effect ".Passive millimeter wave
Detection system --- i.e. millimeter wave radiometer, is to detect and identify target using the millimeter-wave radiation phenomenon of target, it is not
Launch signal, working band is wide, have the advantages that strong antijamming capability, it is hidden, without target glint.But operating distance is near, obtain
Target information amount it is few.Millimeter wave active probing technique and passive detection technology are blended, constitute active-passive composite detection
System.Detection range is so not only increased, eliminates target glint effect, and obtains more target informations.
Common millimeter wave active-passive composite detection system is divided into time division type active-passive composite from work schedule and frequency
Two major class of detection system and frequency division formula active-passive composite detection system.When the detection of time division type active-passive composite is divided into main passive priority
Fraction, main two class of follower streaming timesharing, system making is simple in structure, is easier to realize, but the system does not ensure actively
Signal sensitive target all the time, object recognition rate is relatively low and existence information utilizes insufficient situation.It is passively multiple as frequency division formula master
Close detection system, for the double frequency active-passive composite short-range detecting system published be according to working frequency it is different will actively and
Passive passage separates, and overcoming time division type active-passive composite detection system cannot work at the same time, but the cost of whole system is very high,
Worked at the same time by two groups of oscillators, power consumption is big, and design difficulty is bigger, and the poor anti-interference of signal detection processing, is unfavorable for realizing.
In order to ensure main cpm signal sensitive target at the same time all the time, enhancing system on the basis of system bulk and cost is reduced
The interference free performance of system, obtains more detection informations, and the present invention provides a kind of main passive millimeter wave complex probe of two waveband
System.The system uses double-fed source antenna, and actively and passively passage works in different wave bands respectively, overcomes the main quilt of time division type
The deficiency of dynamic compound detection system, in the state of the passive passage of master works at the same time, detects same target, avoids main passive letter
Interference between number, improves the Electromagnetic Compatibility inside the main passive system of millimeter wave, obtains more target informations, favorably
In the identification of target.
As Application No. CN201010278644.9 discloses a kind of hiding burning things which may cause a fire disaster based on passive millimeter wave radiation detection
Detection system, the purpose that fire source probing is hidden in the region is realized by the detection radiated to target area passive millimeter wave, can
Applied to urban fire control and forest fire protection, which utilizes penetrability and burning things which may cause a fire disaster and non-fire of the millimeter wave to nonelectrolyte materials
There is the characteristic of very big difference in the intensity of millimeter wave radiation in source, by being detected to the millimeter-wave radiation of target area, radiated
Intensity and the actual average temperature range being finally inversed by target area；Warm and humid sensor obtains the temperature and humidity ginseng at scene at the same time
Number, normal average temperature range when obtaining in target area without burning things which may cause a fire disaster is calculated using preset model；Target area detection is obtained
The actual average temperature range and model obtained calculates the normal average temperature range obtained and is compared, final to can be achieved to being visited
The hiding fire source probing of the target area of survey, but the system only discloses a kind of system of millimeter wave passive detection.
CN201610829046.3 discloses a kind of quickly through formula millimeter wave human body security check system and method including some
Active MMW detection device, some infrared detection devices, security check passage and control system, all active MMWs detection dress
Put and the control system is electrically connected at infrared detection device；The active MMW detection device is along the security check passage
It is uniformly distributed from front to back；The detection direction of active MMW detection device and infrared detection device leads to towards the safety check
Road, and the investigative range of all infrared detection devices covers whole security check passage.Than existing mechanical scanning type and conveyer belt
Formula human body safety check imaging system, which is not stopped since personnel walk through and real time imagery, substantially reduces inspection
The time is looked into, under adult's stream application scene, work efficiency and handling capacity can be greatly enhanced, it is easy to be efficient, but the system is simultaneously
The mode of undisclosed passive detection.
The content of the invention
It is an object of the invention to provide a kind of main passive millimeter wave compound detection system of two waveband, to solve the prior art
In caused the above-mentioned defects.
A kind of main passive millimeter wave compound detection system of two waveband, including double-feed antenna, the passive T/R components of two waveband master,
Passive channel signal detection circuit, active channels signal deteching circuit and main cpm signal fusion treatment circuit, the double-fed day
Line divides two-way to be electrically connected with the passive T/R components of two waveband master, and the passive T/R components of two waveband master divide two-way output electricity respectively
Property the passive channel signal detection circuit of connection and active channels signal deteching circuit, the passive channel signal detection circuit and master
Dynamic channel signal detection circuit is electrically connected with main cpm signal fusion treatment circuit, the main cpm signal fusion treatment electricity
Road is by the signal output after fusion.
Preferably, the passive T/R components of the two waveband master include oscillator, power splitter, circulator, active channels mixing
Device, frequency multiplier and passive channel mixer, the oscillator are electrically connected with power splitter, three tunnels of the power splitter point output difference
Circulator, active channels frequency mixer and frequency multiplier are electrically connected, the frequency multiplier is electrically connected with passive channel mixer, described
Double-feed antenna wherein exports all the way is electrically connected circulator, active channels frequency mixer and active channels signal deteching circuit successively,
The another way output of the double-feed antenna is electrically connected the passive channel signal detection circuit of passive channel mixer successively.
Preferably, the double-fed source antenna is the dual-band antenna of transceiver, shares an antenna parabolic interarea, feed
Respectively two individual components of 3mm wave bands and 6mm wave bands.
Preferably, the passive T/R components of the two waveband master are passive by 3mm audio range frequencies and two wave band master of 6mm audio range frequencies
Separation, meanwhile, the compatible transmission for being used for double-channel signal in same component, avoids the interference between active and passive signal.
Preferably, the main cpm signal fusion treatment circuit receives from active channels signal deteching circuit and passively logical
The signal of road signal deteching circuit, two signal detection passages are separate, and it is mutually isolated to detect frequency band.
Preferably, the passive channel signal detection circuit employs high IF amplifier circuit, its low-frequency cut-off frequency is remote
More than active signal detection circuit high-frequency cut-off frequency, the information processing that 3mm radiometers obtain useful signal is only detected.
Preferably, the active channels signal deteching circuit employs zero intermediate frequency circuit, its high-frequency cut-off frequency is remote small
In cpm signal detection circuit low-frequency cut-off frequency, the information processing that 6mm band radars obtain useful signal is only detected.
Preferably, the active channels signal deteching circuit is arrowband zero intermediate frequency circuit, the passive channel signal detection
Circuit is the high intermediate-frequency circuit in broadband, and the low-frequency cut-off frequency of the passive channel signal detection circuit is examined more than active channels signal
More than 10 times of the high-frequency cut-off frequency of slowdown monitoring circuit, greatly reduce the signal interference between active and passive passage.
The advantage of the invention is that：The main passive detection system of the present invention is operated in two different-wavebands, and radio-frequency front-end is adopted
With the double-fed member antenna of transceiver and the passive T/R components of two waveband master, passive channel signal detection is put using the high intermediate frequency in broadband
Big circuit, active channels signal detection use arrowband zero intermediate frequency circuit, on the basis of 6mm wave bands active signal sensitive target all the time
On, the passive information of 3mm wave bands is adequately isolated, avoids interfering with each other for the passive information of the same band master and doing for signal processing
Disturb.By the main cpm signal complicated utilization of two waveband, the interference free performance of system is enhanced, the echo signal of acquisition is more, has
Beneficial to the identification of target.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Wherein：1-double-fed member antenna, the passive T/R components of 2-two waveband master, 2a-oscillator, 2b-power splitter, 2c-
Circulator, 2d-active channels frequency mixer, 2e-frequency multiplier, 2f-passive channel mixer, 3-passive channel signal detection are electric
Road, 4-active channels signal deteching circuit, 5-main cpm signal fusion treatment circuit.
Embodiment
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention easy to understand, with reference to
Embodiment, the present invention is further explained.
As shown in Figure 1, a kind of main passive millimeter wave compound detection system of two waveband, including the main quilt of double-feed antenna 1, two waveband
Dynamic T/R components 2, passive channel signal detection circuit 3, active channels signal deteching circuit 4 and main cpm signal fusion treatment electricity
Road 5, the double-feed antenna 1 divide two-way to be electrically connected with the passive T/R components 2 of two waveband master, the passive T/R components of two waveband master
Passive channel signal detection circuit 3 and active channels signal deteching circuit 4 is electrically connected in 2 points of two-way outputs, described passive
Channel signal detection circuit 3 and active channels signal deteching circuit 4 are electrically connected with main cpm signal fusion treatment circuit 5,
The main cpm signal fusion treatment circuit 5 is by the signal output after fusion.
It is worth noting that, the passive T/R components 2 of two waveband master include oscillator 2a, power splitter 2b, circulator 2c,
Active channels frequency mixer 2d, frequency multiplier 2e and passive channel mixer 2f, the oscillator 2a and power splitter 2b are electrically connected, institute
State 2b points of three tunnels outputs of power splitter and circulator 2c, active channels frequency mixer 2d and frequency multiplier 2e, the frequency multiplication is electrically connected
Device 2e and passive channel mixer 2f are electrically connected, the double-feed antenna 1 wherein export all the way be electrically connected successively circulator 2c,
Active channels frequency mixer 2d and active channels signal deteching circuit 4, the another way output of the double-feed antenna 1 are electrically connected successively
The passive channel signal detection circuits 3 of passive channel mixer 2f.
In the present embodiment, the double-fed source antenna 1 is the dual-band antenna of transceiver, shares an antenna parabolic master
Face, feed are respectively two individual components of 3mm wave bands and 6mm wave bands.
In the present embodiment, the passive T/R components 2 of the two waveband master are by two wave band of 3mm audio range frequencies and 6mm audio range frequencies
Main passive separation, meanwhile, the compatible transmission for being used for double-channel signal in same component, avoids between active and passive signal
Interference.
In the present embodiment, the main cpm signal fusion treatment circuit 5, which receives, comes from active channels signal deteching circuit 4
With the signal of passive channel signal detection circuit 3, two signal detection passages are separate, and it is mutually isolated to detect frequency band.
In the present embodiment, the passive channel signal detection circuit 3 employs high IF amplifier circuit, its low-frequency cutoff
Frequency is much larger than 4 high-frequency cut-off frequency of active signal detection circuit, only detects 3mm radiometers and obtains at the information of useful signal
Reason.
In the present embodiment, the active channels signal deteching circuit 4 employs zero intermediate frequency circuit, its high-frequency cut-off frequency
Much smaller than 3 low-frequency cut-off frequency of cpm signal detection circuit, only to detect 6mm band radars and obtaining at the information of useful signal
Reason.
In addition, the active channels signal deteching circuit 4 is arrowband zero intermediate frequency circuit, the passive channel signal detection electricity
Road 3 is the high intermediate-frequency circuit in broadband；The low-frequency cut-off frequency of the passive channel signal detection circuit 3 is examined more than active channels signal
More than 10 times of the high-frequency cut-off frequency of slowdown monitoring circuit 4, greatly reduce the signal interference between active and passive passage.
Based on above-mentioned, the main passive millimeter wave compound detection system of this kind of two waveband, by double-fed source antenna 1, the main quilt of two waveband
Dynamic T/R components 2, passive channel signal detection circuit 3, active channels signal deteching circuit 4, main cpm signal fusion treatment circuit
5 compositions, the double-fed source antenna 1 are used for the transmitting-receiving work of radio-frequency front-end two-way exploring antenna, the passive T/R groups of two waveband master
Part 2 is used for the processing and transmission of radio-frequency front-end antenna receiving and transmitting signal, and the passive channel signal detection circuit 3 uses broadband senior middle school
Frequency amplifying circuit, for detecting the signal of T/R components output 3mm wave bands, the active channels signal deteching circuit 4 uses arrowband
Zero intermediate frequency circuit, for detecting the signal of T/R components output 6mm wave bands, the main cpm signal fusion treatment circuit 5 merges
The processing of two paths signal, the signal synthesis processing for two wave bands provide execution signal, therefore whole system while work
Make, in two different-wavebands, on the basis of 6mm wave bands active signal all the time sensitive target, to be adequately isolated 3mm wave bands and passively believe
Breath, avoid the passive information of the same band master interfere with each other and the interference of signal processing, enhance the interference free performance of system,
Improve target identification probability.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, all things considered, is all merely illustrative, not the only.Institute
Have within the scope of the present invention or be included in the invention in the change being equal in the scope of the present invention.
Claims (8)
1. a kind of main passive millimeter wave compound detection system of two waveband, including double-feed antenna (1), the passive T/R components of two waveband master
(2), passive channel signal detection circuit (3), active channels signal deteching circuit (4) and main cpm signal fusion treatment circuit
(5), it is characterised in that the double-feed antenna (1) divides two-way to be electrically connected with the passive T/R components (2) of two waveband master, the double wave
The main passive T/R components (2) of section divide two-way output that passive channel signal detection circuit (3) and active channels signal is electrically connected
Detection circuit (4), the passive channel signal detection circuit (3) and active channels signal deteching circuit (4) are passively believed with main
Number fusion treatment circuit (5) is electrically connected, and the main cpm signal fusion treatment circuit (5) is by the signal output after fusion.
A kind of 2. main passive millimeter wave compound detection system of two waveband according to claim 1, it is characterised in that：It is described double
The passive T/R components (2) of wave band master include oscillator (2a), power splitter (2b), circulator (2c), active channels frequency mixer (2d),
Frequency multiplier (2e) and passive channel mixer (2f), the oscillator (2a) are electrically connected with power splitter (2b), the power splitter
Circulator (2c), active channels frequency mixer (2d) and frequency multiplier (2e), the frequency multiplication is electrically connected in (2b) point three tunnels output
Device (2e) is electrically connected with passive channel mixer (2f), and the double-feed antenna (1) wherein exports all the way is electrically connected ring successively
Flow device (2c), active channels frequency mixer (2d) and active channels signal deteching circuit (4), the another way of the double-feed antenna (1)
Output is electrically connected the passive channel signal detection circuit (3) of passive channel mixer (2f) successively.
A kind of 3. main passive millimeter wave compound detection system of two waveband according to claim 2, it is characterised in that：It is described double
Feed antenna (1) is the dual-band antenna of transceiver, shares an antenna parabolic interarea, feed is respectively 3mm wave bands and 6mm
Two individual components of wave band.
A kind of 4. main passive millimeter wave compound detection system of two waveband according to claim 2, it is characterised in that：It is described double
The passive T/R components (2) of wave band master passively separate 3mm audio range frequencies and two wave band master of 6mm audio range frequencies, meanwhile, compatibility is same
It is used for the transmission of double-channel signal in one component, avoids the interference between active and passive signal.
A kind of 5. main passive millimeter wave compound detection system of two waveband according to claim 1, it is characterised in that：The master
Cpm signal fusion treatment circuit (5) receives and comes from active channels signal deteching circuit (4) and passive channel signal detection circuit
(3) signal, two signal detection passages are separate, and it is mutually isolated to detect frequency band.
A kind of 6. main passive millimeter wave compound detection system of two waveband according to claim 1, it is characterised in that：The quilt
Dynamic channel signal detection circuit (3) employs high IF amplifier circuit, its low-frequency cut-off frequency is much larger than active signal detection electricity
Road (4) high-frequency cut-off frequency, only detects the information processing that 3mm radiometers obtain useful signal.
A kind of 7. main passive millimeter wave compound detection system of two waveband according to claim 5, it is characterised in that：The master
Dynamic channel signal detection circuit (4) employs zero intermediate frequency circuit, its high-frequency cut-off frequency is much smaller than cpm signal detection circuit
(3) low-frequency cut-off frequency, only detects the information processing that 6mm band radars obtain useful signal.
A kind of 8. main passive millimeter wave compound detection system of two waveband according to claim 5, it is characterised in that：The master
Dynamic channel signal detection circuit (4) is arrowband zero intermediate frequency circuit, and the passive channel signal detection circuit (3) is the high intermediate frequency in broadband
Circuit；The low-frequency cut-off frequency of the passive channel signal detection circuit (3) is more than the height of active channels signal deteching circuit (4)
More than 10 times of frequency cutoff frequency, greatly reduce the signal interference between active and passive passage.
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| CN201711316549.1A CN107991652A (en) | 2017-12-12 | 2017-12-12 | A kind of main passive millimeter wave compound detection system of two waveband |
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Cited By (10)
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|---|---|---|---|---|
| CN108761398A (en) * | 2018-05-31 | 2018-11-06 | 南京航空航天大学 | Microwave photon two waveband radar detection method and microwave photon two waveband radar |
| CN108845369A (en) * | 2018-06-14 | 2018-11-20 | 江苏心磁超导体有限公司 | Terahertz safe examination system |
| CN108909621A (en) * | 2018-07-12 | 2018-11-30 | 芜湖博高光电科技股份有限公司 | A kind of millimeter wave detection car door anticollision safety system and its guard method outside |
| CN108966458A (en) * | 2018-07-16 | 2018-12-07 | 芜湖博高光电科技股份有限公司 | A kind of millimeter wave active-passive composite formula energy-saving street lamp control system and control method |
| CN109061624A (en) * | 2018-07-16 | 2018-12-21 | 芜湖博高光电科技股份有限公司 | A kind of military vehicle short distance positioning communication device based on millimeter wave |
| CN109212487A (en) * | 2018-09-27 | 2019-01-15 | 芜湖博高光电科技股份有限公司 | A kind of TR component of two-band one |
| CN109307864A (en) * | 2018-11-27 | 2019-02-05 | 上海航天测控通信研究所 | A kind of spaceborne active-passive integratedization detection device |
| CN109521490A (en) * | 2018-11-12 | 2019-03-26 | 北京航空航天大学 | A kind of millimeter wave array radiation meter front end of achievable analog beam figuration |
| WO2021129751A1 (en) * | 2019-12-27 | 2021-07-01 | 华为技术有限公司 | Method for determining state of frequency band, and related device |
| CN113534070A (en) * | 2021-05-26 | 2021-10-22 | 南京理工大学 | Multi-band air-feed radio frequency signal receiving and transmitting device and intensity calculating and measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108761398A (en) * | 2018-05-31 | 2018-11-06 | 南京航空航天大学 | Microwave photon two waveband radar detection method and microwave photon two waveband radar |
| CN108845369A (en) * | 2018-06-14 | 2018-11-20 | 江苏心磁超导体有限公司 | Terahertz safe examination system |
| CN108909621A (en) * | 2018-07-12 | 2018-11-30 | 芜湖博高光电科技股份有限公司 | A kind of millimeter wave detection car door anticollision safety system and its guard method outside |
| CN108909621B (en) * | 2018-07-12 | 2020-10-16 | 芜湖博高光电科技股份有限公司 | Protection method of millimeter wave detection vehicle door outer anti-collision safety system |
| CN108966458A (en) * | 2018-07-16 | 2018-12-07 | 芜湖博高光电科技股份有限公司 | A kind of millimeter wave active-passive composite formula energy-saving street lamp control system and control method |
| CN109061624A (en) * | 2018-07-16 | 2018-12-21 | 芜湖博高光电科技股份有限公司 | A kind of military vehicle short distance positioning communication device based on millimeter wave |
| CN109212487A (en) * | 2018-09-27 | 2019-01-15 | 芜湖博高光电科技股份有限公司 | A kind of TR component of two-band one |
| CN109521490A (en) * | 2018-11-12 | 2019-03-26 | 北京航空航天大学 | A kind of millimeter wave array radiation meter front end of achievable analog beam figuration |
| CN109307864A (en) * | 2018-11-27 | 2019-02-05 | 上海航天测控通信研究所 | A kind of spaceborne active-passive integratedization detection device |
| WO2021129751A1 (en) * | 2019-12-27 | 2021-07-01 | 华为技术有限公司 | Method for determining state of frequency band, and related device |
| CN113534070A (en) * | 2021-05-26 | 2021-10-22 | 南京理工大学 | Multi-band air-feed radio frequency signal receiving and transmitting device and intensity calculating and measuring method |
| CN113534070B (en) * | 2021-05-26 | 2024-02-13 | 南京理工大学 | Multiband air-feed radio frequency signal receiving and transmitting device and intensity calculating and measuring method |
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