CN208255424U - A kind of low latitude unmanned plane passive detection positioning system - Google Patents
A kind of low latitude unmanned plane passive detection positioning system Download PDFInfo
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- CN208255424U CN208255424U CN201821860302.6U CN201821860302U CN208255424U CN 208255424 U CN208255424 U CN 208255424U CN 201821860302 U CN201821860302 U CN 201821860302U CN 208255424 U CN208255424 U CN 208255424U
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Abstract
The utility model discloses a kind of low latitude unmanned plane passive detection positioning system, including the detection branch of one or more, every detection branch includes array antenna elements, multi-way receiving module and detection positioning component, array antenna elements include multiple for receiving the bay of the radiofrequency signal of unmanned plane transmitting, multi-way receiving module includes multiple channel reception ends, each bay correspondence is connect with a channel reception end of multi-way receiving module, and the output end of multi-way receiving module is connect with detection positioning component.The utility model has many advantages, such as that structure is simple, at low cost, loss is small, do not influenced by space environment and detection efficient and precision are high.
Description
Technical field
The utility model relates to low latitude unmanned plane passive detection technical fields more particularly to a kind of low latitude unmanned plane passively to visit
Survey positioning system.
Background technique
Unmanned plane use scope is more and more extensive at present, has become professional equipment, the life tool of various industries, makes
The working time can greatly be saved by obtaining, and improve working efficiency.But in certain key areas, such as airport, prison, portion of government
Door etc., unmanned plane brings security risk to these sensitizing ranges.Therefore it needs to complete by anti-unmanned plane passive detection to nothing
The functions such as man-machine detection, compacting, intercepting and capturing realize the security protection guarantee to strategic point region.
In the protection of low latitude, drone flying height compares lower, and small in size, speed is slow, referred to as typical " low small
Slowly target ".At present it is usually to use following two mode for the detection of low airflight unmanned plane:
1, it is detected using conventional Active Radar detection system, but there are short-distance blind sections for radar-probing system, hold
It is influenced vulnerable to space environment, and that there are false alarm rates is high, is difficult to by number of drawbacks such as radar detection signal identification unmanned plane types；
2, unmanned plane detection and positioning are carried out using passive detection and positioning system, detects nobody by Active Arrays
Machine signal exports the signal received to receiver by the switching control of radio frequency converting switch, and receiver is usually single-pass
Road receiver, each receiver receive the detectable signal of antenna all the way by radio frequency converting switch.But such mode needs individually
Complicated radio frequency converting switch circuit is designed, and aerial signal need to be by radio frequency converting switch to receiver, so that link load
Greatly, simultaneously because UAV Communication mechanism be the period send and discontinuous transmission, i.e. unmanned plane transmitting signal period property sent out
It send, and receiver receives aerial signal all the way every time, then when the UAV Communication signal that each antenna receives enters receiver not
It is the data of synchronization, is difficult to be accurately detected unmanned plane position by the detectable signal of different moments, detection efficient is low, detects
Azimuthal error is big.
Utility model content
The technical problems to be solved in the utility model is that for technical problem of the existing technology, this is practical new
Type provide a kind of structure is simple, at low cost, loss is small, not by space environment influenced and detection efficient and low latitude with high accuracy nobody
Machine passive detection positioning system.
In order to solve the above technical problems, the utility model proposes technical solution are as follows:
A kind of low latitude unmanned plane passive detection positioning system, including the detection branch of one or more, every detection branch
Road includes array antenna elements, multi-way receiving module and detection positioning component, and the array antenna elements include multiple use
In the bay for the radiofrequency signal for receiving unmanned plane transmitting, the multi-way receiving module includes multiple channel reception ends, often
A bay correspondence is connect with a channel reception end of the multi-way receiving module, and the multichannel receives
The output end of component is connect with the detection positioning component；The array antenna elements include more than one for receiving low frequency
It the low-frequency antenna unit of signal, more than one intermediate frequency antenna element for receiving intermediate frequency signal and more than one is used for
Receive the high frequency antenna unit of high-frequency signal.
Utility model is as further improvement of the utility model: the intermediate frequency antenna element, high frequency antenna unit are integrated
It is arranged on same circuit board, constitutes medium-high frequency antenna element, each low-frequency antenna unit, each medium-high frequency antenna element
It is respectively separated specified angle arrangement.
As further improvement of the utility model: each medium-high frequency antenna element and each low-frequency antenna unit it
Between interlaced arrangement one by one.
As further improvement of the utility model: described low-frequency antenna unit arrangement N1, and N1=360/a1, wherein
A1 is the half-power beam width of single low-frequency antenna array element, and each low-frequency antenna unit is arranged according to interval 360/N1 degree,
Described medium-high frequency antenna element arrangement N2, and N2=360/a2, wherein a2 is single intermediate frequency bay or high frequency antenna array element
Half-power beam width, each medium-high frequency antenna element according to interval 360/N2 degree arrange.
As further improvement of the utility model: the low-frequency antenna unit, intermediate frequency antenna element, high frequency antenna unit
It include bay and RF front-end circuit, the bay and RF front-end circuit are integrally disposed.
As further improvement of the utility model: every detection branch further includes the communication set for being used for transmission data
Part, the communication component are connect with the detection positioning component.
As further improvement of the utility model: every detection branch further includes GPS positioning component, the GPS
Positioning component is connect with the detection positioning component.
As further improvement of the utility model: further including server, the server is detected with described in each item respectively
Branch communication connection.
As further improvement of the utility model: the multi-way receiving module, which uses, is based on SDR(Soft ware
Defined Radio, software radio) multichannel receiver, the multichannel receiver has been internally integrated multiple one-out-threes
RF switch is accessed in the low frequency, intermediate frequency, high frequency of the array antenna elements output by one-out-three RF switch control
The multi channel signals of any one frequency range.
Compared with the prior art, the advantages of the utility model are:
1, the utility model low latitude unmanned plane passive detection positioning system receives unmanned plane by array antenna elements simultaneously
The radiofrequency signal of transmitting, by the synchronous signal for receiving each bay and receiving of multi-way receiving module, then through detecting positioning group
Part realizes the Detection location of unmanned plane target, and individually designed complicated radio frequency converting switch circuit, each antenna institute are not necessarily in system
The signal received can synchronize and be sent to multi-way receiving module, so that low, detection range is lost in system link radio-frequency front-end
It far, is the data of synchronization when and the UAV Communication signal that receives of each antenna enters receiver, it can be in order to accurate, high
Effect detects unmanned plane, improves unmanned plane detection accuracy and efficiency.
2, the utility model low latitude unmanned plane passive detection positioning system need to only be arranged receiver and emit without being arranged
Machine can reduce cost of implementation relative to traditional radar-probing system, while relative to photoelectric detecting system, not by severe day
Gas influences, and can be realized round-the-clock continuous work.
3, the utility model low latitude unmanned plane passive detection positioning system, no great-power electromagnetic wave radiation, concealment is strong, no
Adverse effect can be interfered etc. to human body and other equipment.
4, the utility model low latitude unmanned plane passive detection positioning system, by configuring the antenna of three frequency ranges simultaneously, together
When arrange according to different frequency range bay size, small slow unmanned plane low in low latitude can be carried out comprehensive positioning and with
Track meets to the demands such as the security protection guarantee of desired zone and unmanned plane confrontation, interference, while making the integrated level of whole system
Height, overall volume is small, space utilization rate is big, and mounting structure is simple, detection range is remote and detection accuracy is high.
5, the utility model low latitude unmanned plane passive detection positioning system, by using Active Arrays, while by day
Linear array member and RF front-end circuit carry out integrated setting, and bay is no longer needed to through radio-frequency cable and RF front-end circuit phase
Even, the space utilization rate of antenna assembly can be improved, reduce the volume of antenna assembly, so that topology layout is more compact, into one
Step reduces system link loss.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 1 low-to-medium altitude unmanned plane passive detection positioning system of the utility model embodiment.
Fig. 2 is the arrangement schematic illustration of each bay of array antenna elements in the utility model embodiment 1.
Fig. 3 is principle schematic diagram of 1 detecting and locating system of the utility model embodiment in concrete application embodiment.
Fig. 4 is 1 detecting and locating system of the utility model embodiment multi-way receiving module in concrete application embodiment
Structural schematic diagram.
Fig. 5 is the structural schematic diagram of array antenna elements in the utility model embodiment 2.
Marginal data: 1, array antenna elements；11, low-frequency antenna unit；12, medium-high frequency antenna element；111, low frequency day
Linear array member；112, low frequency radio frequency front-end circuit；123, high frequency antenna array element；124, high-frequency radio frequency front-end circuit；2, multichannel connects
Receive component；13, chassis；14, center fixing piece；3, positioning component is detected；4, communication component；5, GPS positioning component；6, it services
Device.
Specific embodiment
The utility model is further described below in conjunction with Figure of description and specific preferred embodiment, but not because
This and limit the protection scope of the utility model.
Embodiment 1:
As shown in Figure 1, the present embodiment low latitude unmanned plane passive detection positioning system includes n item detection branch, n > 1, n are specific
It can be configured by actual demand, every detection branch includes array antenna elements 1, multi-way receiving module 2 and detection positioning group
Part 3, array antenna elements 1 include multiple for receiving the bay of unmanned plane transmitting, and multi-way receiving module 2 includes multiple
Channel reception end, each bay correspondence are connect with a channel reception end of multi-way receiving module 2, each bay tool
Body is connect by radio frequency coaxial-cable with multi-way receiving module 2, the output end and detection positioning component of multi-way receiving module 2
3 connections；Each bay receives the radiofrequency signal of unmanned plane transmitting in array antenna elements 1, and synchronism output is received to multichannel
Component 2；Multi-way receiving module 2 receives the detectable signal that each bay is sent, and output is to detection after being converted to desired signal
Positioning component 3；Detection positioning component 3 carries out target detection, positioning, when detecting target, output according to the signal received
The position of the unmanned plane target and unmanned plane that recognize.
The present embodiment receives unmanned plane by mutiple antennas array element by above system, using array antenna elements 1 simultaneously
The radiofrequency signal of transmitting, by the synchronous signal for receiving each bay and receiving of multi-way receiving module 2, then through detecting positioning group
Part 3 realizes the Detection location of unmanned plane target, and individually designed complicated radio frequency converting switch circuit, each antenna institute are not necessarily in system
The signal received, which can synchronize, is sent to multi-way receiving module 2, so that low, detection range is lost in system link radio-frequency front-end
It far, is the data of synchronization when and the UAV Communication signal that receives of each antenna enters receiver, it can be in order to accurate, high
Effect detects unmanned plane, improves unmanned plane detection accuracy and efficiency.
The specified partial region of each bay covering, each bay cover in the present embodiment array antenna elements 1
Cover area can be configured according to actual needs, and the overlay area between adjacent antenna array element is configurable to not be overlapped,
It is configurable to overlapped to improve detection accuracy, total coverage area of all bays is configurable to full airspace,
The target airspace monitored needed for being configurable to only.
Multi-way receiving module 2, detection positioning component 3 specifically use multichannel receiver in the present embodiment, and multichannel connects
Receipts machine, which is internally integrated to be provided with, receives circuit and the detection localization process circuit for realizing detection positioning function, and multichannel connects
Receipts machine passes through radio frequency coaxial-cable respectively and is attached with each bay in array antenna elements 1, receives circuit and receives respectively
After the signal of each bay, the target detection and positioning of unmanned plane are carried out by detection localization process circuit, when detecting target
When, export the position of the unmanned plane target and unmanned plane that recognize.Multichannel receiver specifically can be used in zero based on SDR
Frequency multi-channel receiver realizes that 0.1-6GHz wide bandwidth receives, and can cover low small slow all reception bandwidths.It is understood that
It is that multi-way receiving module 2 can also use other types multichannel receiver according to actual needs, detects positioning component 3
It can use and the independent circuit structure of receiver.
In the present embodiment, detection localization process circuit specifically includes sequentially connected characteristic parameter extraction unit, identification list
Member and positioning unit, characteristic parameter extraction unit receive the signal of each bay output, export and give after extraction characteristic parameter
Recognition unit, recognition unit match the characteristic parameter of extraction with characteristic parameter template, detect whether there are unmanned plane, with
And identify that the type (such as model) of unmanned plane, positioning obtain the specific position of unmanned plane when detecting the signal of unmanned plane transmitting
Output is set, the standard signal training that characteristic parameter template is specifically emitted by different type unmanned plane in advance obtains.Detect positioning group
Part 3 can also use other detection, positioning methods to improve unmanned machine testing positioning accuracy.
In concrete application embodiment, is passively intercepted and captured by each bay in array antenna elements 1, receives unmanned plane or nothing
The radiofrequency signal of observing and controlling, the figure biography of human-machine operation person transmitting etc., the signal that each bay detects, which synchronizes, is sent to multichannel
Receiver is received in multichannel receiver after circuit receives each channel signal and is handled the signal received, frequency conversion zero
Intermediate-freuqncy signal, and by detect localization process circuit zero intermediate frequency signals are detected and are positioned, identify unmanned plane type with
And orientation, reference distance information of unmanned plane etc..
In the present embodiment, array antenna elements 1 specifically include more than one for receiving the low-frequency antenna of low frequency signal
Unit 11, more than one intermediate frequency antenna element for receiving intermediate frequency signal and more than one for receiving high-frequency signal
High frequency antenna unit, by being simutaneously arranged the aerial array of three low frequency, intermediate frequency and high frequency frequency ranges in a set of antenna assembly,
It can be realized simultaneously the detection of three low frequency, intermediate frequency and high frequency frequency range unmanned plane signals, the bay area of coverage of each frequency range
Domain can configure according to actual needs.
In the present embodiment, low-frequency antenna unit 11, intermediate frequency antenna element, high frequency antenna unit include integrally disposed day
Linear array member and RF front-end circuit, i.e. low-frequency antenna unit 11 include integrally disposed low-frequency antenna array element and low frequency radio frequency
Front-end circuit, intermediate frequency antenna element include integrally disposed intermediate frequency bay and intermediate frequency RF front-end circuit, high frequency antenna
Unit includes integrated high frequency antenna array element and high-frequency radio frequency front-end circuit.By using the Active Antenna Configurations of integrated form, often
A Active Arrays are made of low-noise amplifier, bandpass filter, by bay and corresponding RF front-end circuit
Carry out integrated, bay no longer needs to be connected by radio-frequency cable with RF front-end circuit, and antenna assembly can be improved
Space utilization rate, reduce the volume of antenna assembly so that topology layout is more compact, and system link loss can be reduced.
As shown in Fig. 2, the present embodiment intermediate frequency antenna element, high frequency antenna unit are integrally disposed on same circuit board, structure
At medium-high frequency antenna element 12, each low-frequency antenna unit 11, each medium-high frequency antenna element 12 are respectively separated specified angle arrangement.By
It is low in low-frequency antenna array element frequency, wavelength is big, the size of low-frequency antenna is larger, and the frequency of medium, high frequency antenna is high, wavelength is small,
The size of medium, high frequency antenna is smaller, and the present embodiment considers three band antenna characteristics simultaneously, by by intermediate frequency antenna and high frequency day
Line progress is integrally disposed, can reduce the size difference between intermediate frequency antenna, high frequency antenna and low-frequency antenna, so that low-frequency antenna
It can be arranged in same sheaf space with medium, high frequency antenna, without carrying out layering setting, and whole omnidirectional's detection day can be reduced
The array element quantity of line can improve the space utilization of antenna assembly in conjunction with above-mentioned integrated form Active Antenna Configurations to greatest extent
Compactedness, the integration degree of rate, lift structure layout, to reduce the volume of antenna assembly to greatest extent.
The present embodiment specifically make each low-frequency antenna unit 11, each medium-high frequency antenna element 12 around a center of circle arranged for interval in
On same circumference, so that omnidirectional's exploring antenna of arranged simultaneously on the same circumference three medium-high frequency, low frequency frequency ranges, Ke Yishi
The unmanned plane omnidirectional detection of existing three frequency ranges, further increases the compact layout and space utilization rate of entire antenna assembly.For
Realize the switching of three frequency band signals, this example multichannel receiver has been internally integrated multiple one-out-three RF switches, has passed through three
Select the multichannel letter of any one frequency range in the low frequency, intermediate frequency, high frequency of the RF switch control access output of array antenna elements 1
Number, without individually designed complicated radio frequency converting switch circuit, reduce the loss of system link radio-frequency front-end, different interchannels are into one
Step is by phase compensation, gain compensation, to guarantee each channel amplitude and phase equalization.
The present embodiment specifically may be configured so that low-frequency antenna unit 11 is equal with the size dimension of medium-high frequency antenna element 12,
I.e. medium, high frequency antenna it is integrated after size and low-frequency antenna it is equal sized, then in device all active antenna array antenna
Size is all the same, is conducive to carry out space layout and structure simplifies, naturally it is also possible to which configuration is so that low frequency according to actual needs
Antenna element 11, the size of medium-high frequency antenna element 12 are not exactly the same, to reduce realization difficulty, such as may make the size of the two
Size differs in a certain range.
In the present embodiment, interlaced arrangement one by one between each low-frequency antenna unit 11 and each medium-high frequency antenna element 12,
I.e. each low-frequency antenna unit 11 and each 12 interlaced arrangement of medium-high frequency antenna element, each low-frequency antenna unit 11 are arranged in two
Between a medium-high frequency antenna element 12, each medium-high frequency antenna element 12 is arranged between two low-frequency antenna units 11, is passed through
The isolation being interspersed between signal may be implemented reduces the coupling between low frequency, intermediate frequency, high frequency antenna array element.
The quantity of low-frequency antenna unit 11 and medium-high frequency antenna element 12 can according to the search coverage of required covering with
And the mode of overlay area is configured, it is identical to be configurable to quantity, and it is not identical to be also configurable to quantity.Active array day
The quantity of line is related to the 3dB lobe width of bay, and difference and antenna are directed toward in the installation of each identical Active Arrays
The 3dB lobe width of array element is identical, and the quantity of bay is arranged with specific reference to the beam angle of bay for the present embodiment, if
It is required that the azimuth of investigative range is 360 °, the beam angle of bay is a °, then calculates bay according to formula N=360/a
Requirement, N are positive integer.Specifically arrangement N1, and N1=360/a1 of the present embodiment low-frequency antenna unit 11, wherein a1 is single
The half-power beam width of a low-frequency antenna array element, each low-frequency antenna unit 11, can be just according to interval 360/N1 degree arrangement
Cover 360 degree of full airspace investigative ranges；Medium-high frequency antenna element 12 arranges N2, and N2=360/a2, and wherein a2 is single intermediate frequency
The half-power beam width of bay or high frequency antenna array element, each medium-high frequency antenna element 12 is according to interval 360/N2 degree cloth
It sets, can just cover 360 degree of full airspace investigative ranges.
As described in Figure 2, the azimuth of the present embodiment specific requirement array antenna investigative range is 360 °, the antenna of each frequency range
The beam angle of array element is 60 °, then takes N=6, i.e., each band antenna is required to 6 slave antennas in 60 ° of angle circle distributions, into one
Step by it is above-mentioned using medium, high frequency antenna as one and with low-frequency antenna intersection 30 ° be placed on sustained height, can be maximum
Improve the compactedness of antenna.
In the present embodiment, every detection branch further includes the communication component 4 for being used for transmission data, communication component 4 and detection
Positioning component 3 connects, and realizes that the data of data are transmitted by communication component 4.The present embodiment communication component 4 specifically communicates mould using 4G
Block uploads detection target information by 4G communication network, so that avoiding the communications band of unmanned plane, signal enters receiver
When, the communications band of unmanned plane is shielded, can be interfered to avoid detection, so that receiver sensitivity is higher, direction finding distance
It is farther, reduce detection false alarm rate.
In the present embodiment, every detection branch further includes GPS positioning component 5, GPS positioning component 5 and detection positioning component 3
Connection obtains GPS positioning signal by GPS positioning component 5 in real time, can be so as in conjunction with the unmanned plane position that detects of detection branch
In the accurate unmanned plane positioning of realization.GPS positioning component 5 specifically uses GPS double antenna orientation module, exports corresponding detection branch
Position GPS coordinate, and each detection 0 ° of detection of branch can be corrected automatically to physics direct north, may be implemented positioning,
The orientation of the directional bearing and geographical map that detect branch automatically corrects and each item detects the function such as the object synchronization between branch
Can, further increase the DF and location precision of system.
It further include server 6 in the present embodiment, server 6 detects branch with each item respectively by each communication component 4 and communicates
Connection, server 6 may be implemented to detect the data communication between branch with each item by communication component 4, and each item detection branch is visited
After measuring unmanned plane target, detection information is uploaded to server 6, server 6 can carry out further according to target acquisition information
Control command data can be also transmitted to each item detection branch by Data Management Analysis, server 6.
It is also loaded with cross bearing module in the present embodiment server 6, receives the detection that each item detection branch detects
After target information, by being associated with same target information come the specific location of cross bearing unmanned plane target, the essence of unmanned plane is realized
Quasi- coordinate detection, positioning and tracking.In concrete application embodiment, terminal device can be further set, pass through terminal device handle
It is shown on physics map reference from the target position that server 6 obtains, convenient for observing position and the state of unmanned plane in real time,
And then the flight path of unmanned plane can be estimated in advance.
As shown in figure 3, the utility model low latitude unmanned plane passive detection positioning system includes in concrete application embodiment
A plurality of detection branch, every detection branch include array antenna, multichannel recipient processor, 4G communication module and double antenna
GPS module, every detection branch and TCP server, terminal device are by wireless network connection, and wherein multichannel receiver is defeated
Serial ports is connected with double antenna GPS module all the way out, serial ports is connected with 4G communication module all the way, while make can for reserved network interface all the way
Device configuration is carried out to connect by cable with local terminal.Multichannel recipient processor receiving array antenna is sent out when system works
The multi-channel detection signal sent detects unmanned plane target type and azimuth information, double antenna GPS module output position GPS
The angle α in coordinate and equipment 0 ° of orientation and due north, above-mentioned detection information upload to TCP server by 4G network, and terminal is set
It is standby to obtain the location information of more equipment from TCP server and with the azimuth information of target, carry out cross bearing and export target
More specific location information.
When above system works, is specifically passively intercepted and captured and is received by array antenna observing and controlling that unmanned plane and operator emit with
Figure passes radiofrequency signal, and multichannel recipient processor handles the echo signal received, and frequency conversion is zero intermediate frequency signals, and is led to
It crosses detection localization process circuit to detect zero intermediate frequency signals, identifies orientation, the reference of unmanned plane type and unmanned plane
Range information etc., GPS double antenna orientation module realize that the orientation of equipment positioning, equipment directional bearing and geographical map automatically corrects
And the object synchronization of more equipment；4G communication module uploads detection target information by 4G communication network, avoids the logical of unmanned plane
Believe frequency range, the target information of each item detection branch is sent to TCP server, server is by calculating multisystem association with a mesh
Information is marked, realizes backstage cross bearing；Terminal device obtains targeting information by internet or 4G network and is shown in ground
On figure, further such that in map subscript improving eyesight mark motion track, and configuration is so that support to include that map supports ***, hundred
Degree, Microsoft, the seamless switching of all types of map applications such as Amap.
6 channels are realized using SDR integrated circuit as shown in figure 4, receiving circuit in the present embodiment band-wise processing receiver
Synchronous to receive, integrated one 3 is selected 1 switch before each channel input, three inputs of switch respectively with three frequencies of basic, normal, high frequency
Section antenna is connected, and selects by 3 and is down-converted to zero intermediate frequency IQ two-way by broadband LNA after 1 switch, successively by low-pass filter,
ADC sampling becomes two-way I Q digital information；Detection localization process circuit uses the heterogeneous processor for being internally integrated FPGA+ARM
SOC, wherein FPGA receives every channel IQ digital signal by high speed LVDS bus, and the acquisition that data are completed inside FPGA is located in advance
Preprocessed data, is transferred to ARM by ARM is partially completed the identification of unmanned plane target by the high-speed bus inside SOC by reason
And orientation calculates, and the location information of double antenna GPS is received when orientation calculates to carry out position correction, target identification result and
Orientation calculated result is transmitted by 4G communication module, is also wirelessly connected with terminal device etc. by wireless network.
The above-mentioned low latitude unmanned plane passive detection positioning system of the utility model can carry out small slow unmanned plane low in low latitude
Comprehensive positioning and tracking meet to the demands such as the security protection guarantee of desired zone and unmanned plane confrontation, interference, and whole system
Integrated level it is high, overall volume is small, space utilization rate is big, while mounting structure is simple, detection range is remote and detection accuracy is high.
Embodiment 2:
As shown in figure 5, the present embodiment is substantially the same manner as Example 1, wherein low-frequency antenna unit 11 includes being integrally disposed in
Low-frequency antenna array element 111 and low frequency radio frequency front-end circuit 112 on same circuit board, medium-high frequency antenna element 12 include integrated
Intermediate frequency bay 121, intermediate frequency RF front-end circuit 122 and high frequency antenna array element 123 on same circuit board, high are set
Frequency RF front-end circuit 124, the difference is that further including chassis 13 and center fixing piece 14 in array antenna elements 1, respectively
Low-frequency antenna unit 11, each medium-high frequency antenna element 12 carry out interval, interlaced arrangement centered on center fixing piece 14 respectively, i.e.,
Each low-frequency antenna unit 11, the equal arranged for interval of medium-high frequency antenna element 12 are in the same circumference with center fixing piece 14 for the center of circle
On, interlaced arrangement one by one between each low-frequency antenna unit 11, medium-high frequency antenna element 12.By the way that each antenna element is consolidated
Surely it is set on chassis 13 and center fixing piece 14, the reliability of entire antenna assembly can be improved.
The present embodiment center fixing piece 14 is specific cylindrical, is vertically fixed on the center on chassis 13, each low frequency
Antenna element 11, medium-high frequency antenna element 12 are respectively center of circle certain angular interval arrangement, each low frequency with center fixing piece 14
Antenna element 11, medium-high frequency antenna element 12 a side be fixed on center fixing piece 14, bottom is fixed on chassis 13.
Further each low-frequency antenna unit 11, each medium-high frequency antenna element 12 are fixedly installed on a support frame to the present embodiment
In 15, to further increase the stability of antenna.
The other antenna fixing process of the present embodiment also further progress, such as each low-frequency antenna unit 11, each medium-high frequency
Antenna element 12 is fixed on chassis 13, on center fixing piece 14 by locating slot respectively, to improve the stabilization of antenna as far as possible
Reliability.Certainly it can also increase other fixing process according to actual needs.
The preferred embodiment of above-mentioned only the utility model, does not impose any limitation on the present invention.Though
So the utility model has been disclosed with preferred embodiment as above, however is not intended to limit the utility model.Therefore, it is all without departing from
The content of technical solutions of the utility model any is simply repaired according to the utility model technical spirit is made to the above embodiment
Change, equivalent variations and modification, should all fall in the range of technical solutions of the utility model protection.
Claims (9)
1. a kind of low latitude unmanned plane passive detection positioning system, it is characterised in that: including the detection branch of one or more, every institute
Stating detection branch includes array antenna elements (1), multi-way receiving module (2) and detection positioning component (3), the array day
Line component (1) includes multiple for receiving the bay of the radiofrequency signal of unmanned plane transmitting, the multi-way receiving module (2)
Including multiple channel reception ends, each corresponding channel with the multi-way receiving module (2) of the bay
Receiving end connection, the output end of the multi-way receiving module (2) are connect with the detection positioning component (3)；The array day
Line component (1) includes the more than one low-frequency antenna unit (11) for receiving low frequency signal, more than one for receiving
The intermediate frequency antenna element of intermediate-freuqncy signal and the more than one high frequency antenna unit for being used to receive high-frequency signal.
2. unmanned plane passive detection positioning system in low latitude according to claim 1, it is characterised in that: the intermediate frequency antenna list
Member, high frequency antenna unit are integrally disposed on same circuit board, are constituted medium-high frequency antenna element (12), each low-frequency antenna list
First (11), each medium-high frequency antenna element (12) are respectively separated specified angle arrangement.
3. unmanned plane passive detection positioning system in low latitude according to claim 2, it is characterised in that: each medium-high frequency day
Interlaced arrangement one by one between line unit (12) and each low-frequency antenna unit (11).
4. unmanned plane passive detection positioning system in low latitude according to claim 3, it is characterised in that: the low-frequency antenna list
First (11) arrangement N1, and N1=360/a1, wherein a1 is the half-power beam width of single low-frequency antenna array element, each described low
Frequency antenna element (11) is according to interval 360/N1 degree arrangement, and medium-high frequency antenna element (12) the arrangement N2 is a, and N2=360/
A2, wherein a2 is the half-power beam width of single intermediate frequency bay or high frequency antenna array element, each medium-high frequency antenna list
First (12) are according to interval 360/N2 degree arrangement.
5. unmanned plane passive detection positioning system in low latitude described according to claim 1~any one of 4, it is characterised in that:
The low-frequency antenna unit (11), intermediate frequency antenna element, high frequency antenna unit include bay and RF front-end circuit,
The bay and RF front-end circuit are integrally disposed.
6. unmanned plane passive detection positioning system in low latitude described according to claim 1~any one of 4, it is characterised in that:
Every detection branch further includes the communication component (4) for being used for transmission data, and the communication component (4) and the detection position
Component (3) connection.
7. unmanned plane passive detection positioning system in low latitude described according to claim 1~any one of 4, it is characterised in that:
Every detection branch further includes GPS positioning component (5), the GPS positioning component (5) and the detection positioning component (3)
Connection.
8. unmanned plane passive detection positioning system in low latitude described according to claim 1~any one of 4, it is characterised in that:
It further include server (6), the server (6) communicates to connect with detection branch described in each item respectively.
9. unmanned plane passive detection positioning system in low latitude described according to claim 1~any one of 4, it is characterised in that:
The multi-way receiving module (2) uses the multichannel receiver based on SDR, and the multichannel receiver has been internally integrated multiple
One-out-three RF switch, by one-out-three RF switch control access the array antenna elements (1) output low frequency, in
Frequently, in high frequency any one frequency range multi channel signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109521402A (en) * | 2018-11-13 | 2019-03-26 | 湖南华诺星空电子技术有限公司 | A kind of low latitude unmanned plane passive detection positioning system |
| CN109917327A (en) * | 2019-03-07 | 2019-06-21 | 青岛国数信息科技有限公司 | A kind of passive type unmanned plane detection system and algorithm based on radio link |
| CN110658494A (en) * | 2019-09-27 | 2020-01-07 | 北京理工全盛科技有限公司 | Passive unmanned aerial vehicle positioning method and server |
| CN111884735A (en) * | 2020-07-30 | 2020-11-03 | 北京环境特性研究所 | Frequency spectrum-based unmanned aerial vehicle detection method and detection system thereof |
| RU2752235C1 (en) * | 2020-09-22 | 2021-07-23 | Акционерное общество "НИИ измерительных приборов - Новосибирский завод имени Коминтерна" /АО "НПО НИИИП-НЗиК"/ | Method for measuring angle of low-altitude target and device for its implementation |
| CN115616479A (en) * | 2022-12-19 | 2023-01-17 | 成都空御科技有限公司 | Fixed unmanned aerial vehicle monitoring facilities and system |
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| CN109521402A (en) * | 2018-11-13 | 2019-03-26 | 湖南华诺星空电子技术有限公司 | A kind of low latitude unmanned plane passive detection positioning system |
| CN109521402B (en) * | 2018-11-13 | 2022-06-07 | 湖南华诺星空电子技术有限公司 | Passive detection positioning system for low-altitude unmanned aerial vehicle |
| CN109917327A (en) * | 2019-03-07 | 2019-06-21 | 青岛国数信息科技有限公司 | A kind of passive type unmanned plane detection system and algorithm based on radio link |
| CN109917327B (en) * | 2019-03-07 | 2021-04-20 | 青岛国数信息科技有限公司 | Passive unmanned aerial vehicle detection system and algorithm based on radio link |
| CN110658494A (en) * | 2019-09-27 | 2020-01-07 | 北京理工全盛科技有限公司 | Passive unmanned aerial vehicle positioning method and server |
| CN110658494B (en) * | 2019-09-27 | 2021-10-01 | 理工全盛(北京)科技有限公司 | Passive unmanned aerial vehicle positioning method and server |
| CN111884735A (en) * | 2020-07-30 | 2020-11-03 | 北京环境特性研究所 | Frequency spectrum-based unmanned aerial vehicle detection method and detection system thereof |
| CN111884735B (en) * | 2020-07-30 | 2022-04-01 | 北京环境特性研究所 | Frequency spectrum-based unmanned aerial vehicle detection method and detection system thereof |
| RU2752235C1 (en) * | 2020-09-22 | 2021-07-23 | Акционерное общество "НИИ измерительных приборов - Новосибирский завод имени Коминтерна" /АО "НПО НИИИП-НЗиК"/ | Method for measuring angle of low-altitude target and device for its implementation |
| CN115616479A (en) * | 2022-12-19 | 2023-01-17 | 成都空御科技有限公司 | Fixed unmanned aerial vehicle monitoring facilities and system |
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