CN106291477B - Two-dimentional frequency mutually sweeps small target detection system - Google Patents
Two-dimentional frequency mutually sweeps small target detection system Download PDFInfo
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- CN106291477B CN106291477B CN201610725516.1A CN201610725516A CN106291477B CN 106291477 B CN106291477 B CN 106291477B CN 201610725516 A CN201610725516 A CN 201610725516A CN 106291477 B CN106291477 B CN 106291477B
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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
- G01S7/28—Details of pulse systems
Abstract
Two dimension frequency proposed by the present invention mutually sweeps small target detection system, it is desirable to provide a kind of high discovery probability, low-altitude detection performance be excellent and the target detection system of strong antijamming capability.The technical scheme is that: horizontal submatrix connects respective Microwave Net from respective T/R component respectively with the antenna of vertical submatrix, Microwave Net connects receiver by n paths, on the one hand T/R component is sent control information to through wave control device by timing and timing generator, on the other hand frequency synthesizer is controlled by timing and timing generator and generates pumping signal, Microwave Net is sent into through prime, by T component to antenna to specified detection airspace radiation beam, it controls the R component in array and receives the specified radar return of transmitting, radar return is sent into receiver to signal processing through Microwave Net after the amplification of each column R component and carries out target detection, merge the target detection data of horizontal submatrix and vertical submatrix, realize target bearing, the higher angle measurement accuracy of pitching.
Description
Technical field
The present invention relates to a kind of special type T font two dimension frequencies mutually to sweep small target detection system.
Background technique
Three-dimensional radar is as the backbone radar in short-range air defense system, and system can be divided into fixed beam, and (lamination is more
Wave beam and synthesis multi-beam) system, electronically scanning at one dimension (sweeps, mutually sweeps) system frequently and two-dimensional phase sweeps (phased array) system three classes.It is modern
So-called one-dimensional phase-scan radar, generally falls into three-dimensional radar, and two-dimentional phase-scan radar is commonly referred to as phased array.Conventional two-dimensional electricity is swept
When designing A display content, some is made at signal using primary information tracking data since data volume is big phased-array radar
Reason is limited, leads to A display echo range very little；Some searches for data using primary information, though it can show full distance echo,
But information causes to be difficult to determine the specific location of echo on A is aobvious in the aobvious upper superposition of A in orientation and pitching.Compared to traditional list
Impulsive measurement tracking radar, phased-array radar is not on the basis of losing high-acruracy survey ability while can have multiple target tracking
Ability, Larger Dynamic range, autonomous capture ability.Phased-array radar includes signal processing and the big important composition portion of data processing two
Point.Front-end processing of the signal processing as radar detection information, in clutter, noise, active or sourceless seism complex environment
Obtain distance, angle and the motion information of target；Data processing can then regard the subsequent processing of detection information as, using at signal
The information that reason obtains is filtered the data such as target position, kinematic parameter, smoothly, prediction, tracking, the operations such as interconnection, and shape
At target trajectory.Phased array technology upgraded to one-dimensional phase by the orientation in normal radar, pitching Two Dimensional Rotating antenna before this
Control battle array radar.One-dimension Phased Array is mutually swept in the realization that pitches up, but is still relied on machine in orientation and swept.With the development of science and technology
Two dimensional phased battle array radar realizes the two-dimensional phase in pitching and orientation and sweeps, it can be achieved that the electron scanning to multiple target tracks, and has
The complete characteristic of single-pulse track instrumentation radar can achieve high-precision measurement and tenacious tracking；Its beam scanning has nothing
Inertia agile ability makes phased array radar system response be exceedingly fast, while the change of target can be tracked with very high angular acceleration
Change；Furthermore in the limited situation of radar resource, money is distributed to adjust in a manner of residence time, pulse irradiation number and data transfer rate etc.
Source can realize the measurement tracking optimization of multiple target, and fast beam scanning and Wave beam forming ability and radar waveform agile to catch
Capacitation power is stronger.
" anti-aircraft guns hit mosquitoes " is always considered as one and wastes one's talent on a petty job, folly unable to do what one wishes.However, U.S. army and its
But there is an urgent need to " mosquito " is beaten with antiaircraft gun in Iraq and the Afghan war situation by ally.Certainly, this " mosquito " is those
The afield various shells of empty high-speed flight.Compared with traditional aerial target aircraft, being called " mosquito " not was, because
To find that one piece of 60 millimeters of mortar projectile to head on to attack means that radar allows for detecting in 4~5 kilometers of distance
To the target of 0.001 square metre of size, bird even insect in-flight may all look genuine, and return these " mosquitoes " actually not
Easily.Cannon is always killing means most threatening on battlefield, according to statistics, has 80% injures and deaths to be in World War II
Caused by artillery fire.And C-RAM is then the new concept emerged in large numbers in recent years.C-RAM is " counterrocket big gun, cannon and mortar "
English abbreviation, C-RAM system requirements radar antenna wave beam have hemisphere covering characteristic, the antenna that can be used have the frustum of a cone,
Cylinder adds the structure types such as addendum cone, polygonal pyramid, multi-panel battle array.C-RAM system used in us army relies primarily on kinetic energy force at present
Device intercepts to attack shell, although the matter of great urgency can be solved, but still has its inadequate natural endowment, not only interception probability only 70% or so, but also
The problem of still remaining collateral damage.
Summary of the invention
The purpose of the present invention is intended to provide one kind and can be improved radar detection probability and improve low-altitude detection performance, and can mention
The two dimension frequency of high anti-jamming capacity and reliability performance, changeable set battle array mutually sweeps small target detection system.
Above-mentioned purpose of the invention can be reached by following measures: it is a kind of two dimension frequency mutually sweep small target detection system, wrap
It includes: radar array antenna front, T/R component, Microwave Net, prime, receiver, frequency synthesizer, wave control device, signal processing
Device, timing and timing generator, the aobvious control data processing system of terminal and modular power, it is characterised in that: antenna arrays of radar
Three coordinate system changeable set battle array frameworks are mutually swept with the full coherent two dimension frequency of the T word orthogonal type that vertical submatrix is constituted using horizontal submatrix,
Wherein, the antenna of horizontal submatrix connects respective Microwave Net, microwave network from respective T/R component respectively with the antenna of vertical submatrix
Network connects receiver by n paths, and receiver connects the aobvious control data processing system of terminal, the aobvious control of terminal by signal processor
On the one hand pass through timing and timing generator sends control information to T/R component, another party through wave control device to data processing system
Face controls frequency synthesizer by timing and timing generator and generates pumping signal, is sent into Microwave Net through prime, passes through T component
To antenna to specified detection airspace radiation beam, controls the R component in array and receive the specified radar return of transmitting, radar return
Receiver is sent into through Microwave Net after the amplification of each column R component and carries out secondary mixing amplification, A/D transformation, passes through signal processor
Pulse pressure, FFT and constant false alarm etc. make target detection, and the aobvious control data processing system of terminal is real-time to horizontal submatrix and vertical submatrix data
Fusion is realized to the orientation of highest priority, the higher angle measurement accuracy of pitching.
The present invention has the following beneficial effects: compared with the prior art
1) have multi-functional search, lockon and follow and good anti-interference ability and high reliability.The present invention adopts
Three coordinate systems are swept with the two-dimentional electricity of extraordinary T word orthogonal type, horizontal submatrix is all made of two-dimentional frequency with vertical submatrix and mutually sweeps system,
So that flexible electron scanning, advanced power management and signal processing data processing technique can be used in radar, bring very
More brilliant performances.It, can be in the way of multipolarization, multifrequency point, information using extraordinary T word orthogonal type compared with conventional radar
Fusion realizes the energy such as the search of multi-functional and multiple target, tracking to improve the anti-interference ability and reliability performance of radar
Power, to realize the interception to multiple target.T font two dimension frequency mutually sweeps small target detection system, both has autonomous operation ability, simultaneously
Also one's own side's air defense early warning detection network can be incorporated.System has and higher level command centre and other artillery location radars, air defence mine
The air situation information interface for the electro-optical system for reaching and being installed together with radar ontology can by the fusion treatment to target information
To obtain the higher ability to dbjective state and attributes estimation.
2) it improves probability of detection and improves low-altitude detection performance, have the detectivity powerful to low latitude RAM class Small object.
The present invention is using multiple antennas, multipolarization, multifrequency in data fusion, including this radar system when system inside and outside two classes high-precision real
Fusion between the data fusion and this system and other sensors of point.By Data Fusion, improve
To low latitude RAM class small target detection performance, further increases probability of detection and obtain the tenacious tracking to target, to be conducive to
Realize the accurate tracking and strike to target.
3) realize that different airspaces cover by the single gust of combination of multiple T fonts, it is flexible in application.The present invention uses orientation, pitching
Full electricity sweeps lightweight design, each equal modularization of component part, can form Dan Zhen, the spirits such as more gusts by changing antenna element modes of emplacement
Changeable combination living.Constitute "Shape ", "Shape ", "Shape ", "Shape ", "Polymorphic Dan Zhen such as shape ".
The changeable set battle array of multiple single gust of combining forms, can be with 60 ° of covering orientation, 120 °, 180 °, 240 ° of even 360 ° of airspaces.
Detailed description of the invention
Fig. 1 is the working principle block diagram that two dimension frequency of the invention mutually sweeps small target detection system.
Fig. 2 is horizontal submatrix and the polymorphic embodiment schematic diagram of vertical submatrix of the invention.
Fig. 3 is changeable set battle array embodiment schematic diagram of the present invention.
Specific embodiment
Refering to fig. 1.In the embodiment described below, two dimension frequency mutually sweep small target detection system mainly by array antenna,
T/R component, Microwave Net, prime, receiver, frequency synthesizer, wave control device, signal processor, timing and timing generator, end
The aobvious control data processing system in end and modular power composition.The aobvious control data processing system of terminal provides man-machine for radar system work
Interface has the function of tracking and handling more batches of maneuvering targets, completes the scheduling feature of the radars event such as search and tracking, can be certainly
Adaptively change the related technical parameter of radar, effectively to the running parameter of radar and operating mode carry out reasonable control with
Arrange, adapt to the environment of variation, data through signal processor processes complete to target to build boat, cataloguing, prediction, identification etc. more
Kind task.Modular power provides required power supply for radar system work.
Two-dimentional frequency mutually sweep small target detection system be a completions air target search for, lockon and follow, provide target away from
Three coordinates, full coherent two dimension electronically scanned radar system from information such as, the elevation angle, orientation, intensity and attributes.Antenna arrays of radar uses
Horizontal submatrix mutually sweeps three coordinate system changeable set battle array frameworks with the full coherent two dimension frequency of the T word orthogonal type that vertical submatrix is constituted, horizontal
Submatrix and vertical submatrix are all made of two-dimentional frequency and mutually sweep system, and both horizontal submatrix and vertical submatrix route and the complete phase of structure
Together.Horizontal submatrix connects respective Microwave Net from respective T/R component respectively with vertical submatrix, and Microwave Net passes through n paths
Receiver is connected, receiver connects the aobvious control data processing system of terminal by signal processor, while passing through prime, frequency synthesis
Device is connected to the aobvious control data processing system of terminal.Wherein, Microwave Net connection T/R component, prime and receiver, it is main realize by
The function point and target echo of prime to T/R component transmitting signal are blended into receiver.Frequency synthesizer connect prime, when
Sequence and the aobvious control data processing system of timing generator, receiver and terminal, mainly mutually sweep small target detection system for two-dimentional frequency
High stable local oscillator, coherent transmitting pumping signal and timing and timing generator reference signal are provided.Prime connect Microwave Net and
Frequency synthesizer completes the pumping signal sent to frequency synthesizer and carries out pulse amplifying, is the transmitting of T/R component through Microwave Net
Branch provides enough exciting powers.Wave control device is connected between the aobvious control data processing system of T/R component and terminal, and when passing through
Sequence and the aobvious control data processing system of timing generator connection terminal, major function are by controlling the phase shifter of T/R component and declining
Subtract device to control the scheduled position of antenna beam pointing system.On the one hand the aobvious control data processing system of terminal passes through timing and timing
Generator sends control information to T/R component through wave control device, on the other hand controls frequency by timing and timing generator and closes
It grows up to be a useful person and generates pumping signal, be sent into Microwave Net through prime, by T component to antenna to specified detection airspace radiation beam, control
R component in array processed receives the specified radar return of transmitting, and radar return is sent into after the amplification of each column R component through Microwave Net
Receiver carries out secondary mixing amplification, A/D transformation, makees target detection by signal processor pulse pressure, FFT and constant false alarm etc., eventually
The aobvious control data processing system in end realizes orientation to highest priority, pitching to horizontal submatrix and vertical submatrix data real time fusion
Higher angle measurement accuracy.
In antenna arrays of radar using in T word orthogonal type framework, horizontal submatrix is that two-dimentional frequency mutually sweeps battle array with vertical submatrix
Column, the two route is identical with structure, and the latter is only that the former overturns the form after 90 °.2 ° of horizontal submatrix azimuth beamwidth,
Using phasescan, 60 ° of scanning range；5 ° of pitching beam angle, using frequency scanning, 0 °~60 ° of scanning range.Vertical submatrix
Modes of emplacement is different from horizontal submatrix, and exactly the opposite, and 5 ° of azimuth beamwidth, using frequency scanning, 60 ° of scanning range；It bows
2 ° of beam angle are faced upward, using phasescan, 0 °~60 ° of scanning range.T font two dimension frequency mutually sweeps the level of small target detection system
Submatrix and vertical submatrix can work independently, can also work in combination.By taking horizontal submatrix as an example, in the course of work, first by end
The aobvious control data processing system control frequency synthesizer in end generates pumping signal, from Microwave Net through T component to antenna to specified spy
Airspace radiation beam is surveyed, the R component in secondary control array receives the specified radar return of transmitting, and echo is put through each column R component
Signal processor is sent into after Microwave Net, secondary mixing amplification, A/D transformation after big.Signal processor is through pulse pressure, FFT and perseverance
False-alarm etc. makees target detection, if discovery target, can emit confirmation wave beam and adjudicate again, if target need to be detected, then start-up trace
Wave beam tracks target；If not finding target, change transmitted wave position to set airspace scanning probe.The work of vertical submatrix
It is identical as horizontal submatrix working principle to make principle.When search, if intercept probability can be reduced suitably, radiated from saving energy, reducing
Angle set out can working level submatrix or vertical submatrix, complete target acquisition to set airspace.When tracking, it can open simultaneously
It moves horizontal submatrix and vertical submatrix and tracking is irradiated to highest priority, due to the horizontal narrow angle precision of submatrix azimuth beamwidth
High, the vertical narrow angle precision of submatrix pitching beam angle is high, through the aobvious control processing system of data terminal to horizontal submatrix and vertical son
Battle array data high-precision real time fusion, is realized to the orientation of highest priority, the higher angle measurement accuracy of pitching.
Refering to Fig. 2.It is mutually swept in small target detection system in two-dimentional frequency, three seats is swept using the two-dimentional electricity of extraordinary T word orthogonal type
Standard type system, each equal modularization of component part, wherein horizontal submatrix and vertical submatrix can fight separately, work independently.It can also be with
Radar is improved using the data information fusion of multiple antennas, multipolarization, multifrequency point in radar system using distributed combination
Anti-interference ability and unfailing performance, thus can by changing antenna element modes of emplacement, composition figure a) shown in level it is sub
Battle array and vertical submatrix polarization mode it is different "Shape ", "Shape ", "Shape ", "Shape ", "Shape " etc. organizes formation formula；Also it constitutes
Figure b) shown in horizontal submatrix and vertical submatrix polarization mode it is identical "Shape ", "Shape " is all horizontal polarization or vertical polarization etc.
Flexible and changeable combining form, to adapt to the demand of different mounting platforms." one " type array is horizontal submatrix or X submatrix and hangs down
Straight submatrix or Y submatrix just overturn 90 °, and horizontal subarray sweeps range with the array orientation of vertical submatrix and pitching electricity and is
60°.Six " T " font arrays can be 360 ° of covering orientation, the airspace that 0 °~60 ° of pitching.
Refering to Fig. 3.It mutually sweeps in small target detection system, can be realized different by the group battle array of different modes in two-dimentional frequency
Airspace covering.Using in changeable set battle array, one to six array combination can be used, can 60 ° of covering orientation, 120 °, 180 °,
240 ° even 360 °, the airspace that 0 °~60 ° of pitching.Wherein, figure a) shown in one single gust can 60 ° of covering orientation, 60 ° of pitching sky
Domain.Figure b) shown in by the combination of two single gust of bevel edge T fonts, can 120 ° of covering orientation, 60 ° of pitching airspace, figure c) shown in three
It is a single gust composition half hexagon combination can 180 ° of covering orientation, 60 ° of pitching airspace, and so on, can form
Figure d) shown in the hexagonal array combination that constitutes of six single gust of combinations, realize comprehensive 360 °, the covering of 60 ° of airspaces of pitching.
Array antenna is mainly made of radiating element, coupler, slow wave line and feeding network, T/R component is connected, by T group
The radiofrequency signal of part output forms launching beam in space, while receiving target echo to R component.T/R component connects array day
Line, wave control device and Microwave Net, during emitting pulse by prime through Microwave Net feeding come pumping signal put
Greatly, it is radiated from array antenna to space, the reflection echo signal of target is carried out low noise through array antenna in reception period and is put
It is big to receive.Receiver connects Microwave Net, frequency synthesizer and signal processor, and the radiofrequency signal from Microwave Net is carried out
Sensitivity-frequency control, amplification, filtering, down-converted to intermediate frequency are sent into mould after intermediate-freuqncy signal amplification, numerical control attenuation, filtering
Number converter sampling transformation is digital signal, is then sent through field programmable gate array and carries out Digital Down Convert processing, the number of output
After word i/q signal is converted by small plug-in type optical transceiving integrated module, signal processor is given through optical fiber.Signal processor connects
Receiver, timing and timing generator and the aobvious control data processing system of terminal are connect, by optical fiber and digital synthesis unit, Multibeam synthesis
With processing unit form, receive receiver output signal, through optical fiber and digital synthesis unit synthesize be sent into beam forming unit into
Row of channels amplitude and phase correction coefficient calculates, Adaptive beamformer weight computing completes amplitude and phase correction, the Wave beam forming in channel, data
It is packaged, distributes and be sent to signal-processing board, complete to send after the functions such as the pulse compression, FIR filtering, constant false alarm of data aobvious to terminal
Control data processing system.Timing and timing are connected to the aobvious control data of wave control device, frequency synthesizer, signal processor and terminal
Between processing system, the synchronization that is mainly responsible between generation system working sequence and horizontal submatrix and two arrays of vertical submatrix
Signal.
Claims (10)
1. a kind of two dimension frequency mutually sweeps small target detection system, comprising: radar array antenna front,T/RIt is component, Microwave Net, preceding
Grade, receiver, frequency synthesizer, wave control device, signal processor, timing and timing generator, the aobvious control data processing system of terminal
And modular power, it is characterised in that: antenna arrays of radar is constituted using horizontal submatrix and vertical submatrixTThe full coherent of word orthogonal type
Two-dimentional frequency mutually sweeps three coordinate system changeable set battle array frameworks, wherein the antenna of horizontal submatrix and the antenna of vertical submatrix are using two dimension
Frequency mutually sweeps system, respectively from respectiveT/RComponent connects respective Microwave Net, and Microwave Net passes throughnPaths connect receiver,
Receiver connects the aobvious control data processing system of terminal by signal processor, when the aobvious control data processing system of terminal passes through on the one hand
Sequence and timing generator are sent control information to through wave control deviceT/ROn the other hand component passes through timing and timing generator control
Frequency synthesizer processed generates pumping signal, is sent into Microwave Net through prime, passes throughTComponent is radiated to antenna to specified detection airspace
Wave beam controls in arrayRComponent receives the specified radar return of transmitting, and radar return is through each columnRThrough microwave after component amplification
Network feeding receiver progress secondary mixing amplification,A/DTransformation, by signal processor pulse pressure,FFTAnd constant false alarm makees target inspection
It surveys, the aobvious control data processing system of terminal is to multiple antennas in horizontal submatrix and vertical submatrix data real time fusion, this radar system, more
Fusion between polarization, the data fusion of multifrequency point and this system and other sensors is realized to low latitudeRAMThe orientation of class emphasis Small object, the higher detection of pitching angle measurement accuracy.
2. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: antenna arrays of radar usesT
Word orthogonal type framework, wherein horizontal submatrix and vertical submatrix are all made of two-dimentional frequency and mutually sweep system, and horizontal submatrix and vertical submatrix
The two route is identical with structure, and the latter is only that the former overturns the form after 90 °.
3. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: horizontal submatrix azimuth beam is wide
2 ° of degree, using phasescan, 60 ° of scanning range；5 ° of pitching beam angle, using frequency scanning, 0 ° ~ 60 ° of scanning range；Vertically
Submatrix modes of emplacement is different from horizontal submatrix, and exactly the opposite, and 5 ° of azimuth beamwidth, using frequency scanning, scanning range
60°；2 ° of pitching beam angle, using phasescan, 0 ° ~ 60 ° of scanning range.
4. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: prime connect Microwave Net and
Frequency synthesizer completes the pumping signal sent to frequency synthesizer and carries out pulse amplifying, is through Microwave NetT/RComponent transmitting
Branch provides exciting power.
5. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: wave control device is connected toT/RGroup
Between part and the aobvious control data processing system of terminal, and the aobvious control data processing system of terminal is connected by timing and timing generator,
Major function is to pass through controlT/RThe phase shifter and attenuator of component control the scheduled position of antenna beam pointing system.
6. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: receiver will come from microwave network
The radiofrequency signal of network carries out sensitivity-frequency control, amplification, filtering, down-converted to intermediate frequency, and intermediate-freuqncy signal amplification, numerical control decline
It is digital signal that analog-digital converter sampling transformation is sent into after subtracting, filtering, and is then sent through field programmable gate array and become under number
Frequency is handled, the number of outputI/QAfter signal is converted by plug-in optical transceiving integrated module, signal processor is given through optical fiber.
7. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: the signal warp of receiver output
The synthesis of optical fiber and digital synthesis unit is sent into beam forming unit and carries out the calculating of channel amplitude and phase correction coefficient, Adaptive beamformer power
Value calculates amplitude and phase correction, the Wave beam forming for completing channel, and data are packaged, are distributed and be sent to signal-processing board, completes the arteries and veins of data
It is sent after punching press contracting, FIR filtering and constant false alarm function to the aobvious control data processing system of terminal.
8. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: signal processor through pulse pressure,FFTAnd constant false alarm makees target detection, if discovery target, transmitting confirmation wave beam adjudicate again, if target need to be detected, then starting with
Track wave beam tracks target；If not finding target, change transmitted wave position to set airspace scanning probe.
9. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: change antenna element and place
Mode constitutes horizontal submatrix and different " ┻ shape ", " ┗ shape ", " ┓ shape ", " the ┏ shape ", " ┛ of vertical submatrix polarization mode
Shape " organizes formation formula or the horizontal submatrix of composition and vertical submatrix polarization mode identical " ┃ ▏ shape ", " 〓 shape " organize formation formula.
10. two dimension frequency as described in claim 1 mutually sweeps small target detection system, it is characterised in that: use one to six array
Combination, 60 ° of covering orientation, 120 °, 180 °, 240 ° even 360 °, the airspace that 0 ° ~ 60 ° of pitching, wherein single gust of covering orientation
60 °, 60 ° of pitching of airspace, two single gust of bevel edgesTFont combination, 120 ° of covering orientation, 60 ° of pitching airspace, three single gust of structures
At half hexagon combination, 180 ° of covering orientation, 60 ° of pitching airspace, and so on, six single gust combination constitute
60 ° of comprehensive 360 °, pitching airspace coverings are realized in hexagonal array combination.
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| CN204177963U (en) * | 2014-11-15 | 2015-02-25 | 安徽四创电子股份有限公司 | A kind of active phased array Weather radar system based on digital array |
| CN104569967A (en) * | 2015-01-28 | 2015-04-29 | 芜湖航飞科技股份有限公司 | 8 mm one-dimensional phase scanning system cruise radar |
| CN104865567A (en) * | 2015-03-12 | 2015-08-26 | 零八一电子集团有限公司 | Missile-borne frequency modulated continuous wave miss distance measurement radar system |
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