CN107229038A - A kind of clutter simulation method in kind of radio frequency based on GPU half - Google Patents
A kind of clutter simulation method in kind of radio frequency based on GPU half Download PDFInfo
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- CN107229038A CN107229038A CN201710478624.8A CN201710478624A CN107229038A CN 107229038 A CN107229038 A CN 107229038A CN 201710478624 A CN201710478624 A CN 201710478624A CN 107229038 A CN107229038 A CN 107229038A
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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
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The present invention discloses a kind of land clutter radio frequency Hardware In The Loop Simulation Method based on GPU, including builds clutter real-time semi-physical emulation platform；Clutter member is carried out to clutter based on Doppler's ring to divide；The clutter member of division is resolved parallel using GPU technologies and baseband signal is produced；Calculate guided missile and target flight parameter；Multisystem data interaction and transmission are carried out, transmitting clutter radiofrequency signal is completed.The present invention is by building clutter real-time semi-physical emulation platform, the model concurrent operation divided using CUDA threads block, the medium Doppler's ring of thread programming realization Clutter Model, equidistant ring ground, the parallel acceleration of Clutter Model is realized using GPU technologies, and realize GPU and RTX real time operating systems data interaction and transmission, improve simulation velocity, it is ensured that seeker electromagnetic environment it is true to nature.
Description
Technical field
The present invention relates to clutter radio frequency HWIL simulation.More particularly, to a kind of clutter in kind of radio frequency based on GPU half
Analogy method.
Background technology
Radar clutter is the back scattering that radar beam is formed in body surface, such as ground surface, ocean surface etc..Wherein
Including land clutter, sea clutter and meteorological clutter.Wherein, in addition to as the point clutter produced by Fabricated structures, the usual feelings of land clutter
It is a kind of distribution scattering phenomenon under condition；Sea clutter just refers to the echo on sea, and it shows stronger dynamic characteristic；Meteorological clutter
The mainly back scattering of rainfall layer.
Target seeker can be disturbed in Complex Battlefield Environments by land clutter, to regard performance under detection target seeker low latitude,
Need to detect target seeker anti-clutter performance using HWIL simulation.However, needing huge meter due to resolving Clutter Model
Calculation amount, the current model calculating speed interference simulation requirement of real-time true to nature far from height is met.Seeker performance test is real
When property requires that the emulation cycle of the frame data of trajectory one is 1ms, and the time for resolving frame Clutter Model needs is 100ms or so.
This means that the noise signal noise signal that not current time target seeker faces provided to target seeker, but before 100ms
Noise signal, this is no longer true to nature by the electromagnetic environment for causing to be supplied to target seeker.Accordingly, it would be desirable to solve model using current
The advanced parallel artificial technology of computing speed, improves simulation velocity.
Method for the parallel acceleration of model is a lot, has and is improved using software algorithm, also has and added using hardware
The method of speed.Graphics processor (GPU, Graphics Processing Unit), also known as shows core, vision processor, shows
Show chip, be a kind of special in PC, work station, game machine and some mobile device (such as tablet personal computers, smart mobile phone
Deng) microprocessor of epigraph operation.Display information required for computer system is carried out conversion driving by it, and to aobvious
Show that device provides line scan signals, control the correct display of display, be the critical elements for connecting display and PC mainboard,
It is also one of the visual plant of " human-computer dialogue ".What GPU was faced is type high unity, the mutually large-scale data without dependence
With the pure computing environment that need not be interrupted, large number of computing unit and the streamline of overlength are employed, but only
Very simple control logic simultaneously eliminates Cache, is good at large-scale concurrent calculating.
Accordingly, it is desirable to provide a kind of method accelerated based on GPU technologies to Clutter Model, and one kind can pass through
The system that GPU is constituted with windows, RTX (real time operating system), completes data of the GPU by PCI, optical fiber and hardware system
Interaction and transmission, so as to set up clutter real-time semi-physical emulation platform, realize the real-time semi-physical emulation of clutter.
The content of the invention
In order to solve one of at least the above, it is an object of the invention to provide a kind of radio frequency based on GPU half is in kind
Clutter simulation method, the parallel acceleration of Clutter Model is realized using GPU technologies, and realizes GPU and RTX real time operating systems number
According to interaction and transmission, sea clutter real-time simulation is solved the problems, such as, so as to improve sea clutter HWIL simulation fidelity.
To reach above-mentioned purpose, the present invention uses following technical proposals：
A kind of clutter simulation method in kind of radio frequency based on GPU half, including：
S1：Build clutter real-time semi-physical emulation platform；
S2：Clutter member is carried out to clutter based on Doppler's ring to divide；
S3：The clutter member of division is resolved parallel using GPU technologies and baseband signal is produced；
S4：Calculate guided missile and target flight parameter；
S5：Multisystem data interaction and transmission are carried out, transmitting clutter radiofrequency signal is completed.
Preferably, clutter is land clutter and/or sea clutter.
Preferably, clutter real-time semi-physical emulation platform includes Clutter Model resolving computer, radiofrequency signal simulation source, imitated
True main control computer and optical fiber, wherein
Clutter Model resolves computer, and Clutter Model is resolved parallel using GPU technologies, produces clutter base band letter
Number, and radiofrequency signal simulation source will be sent to per frame clutter baseband signal；
Main control computer is emulated, the flight parameter for calculating current guided missile and target sends Clutter Model solution to and calculated
Calculation machine carries out Models computed；
Radiofrequency signal simulation source, generates intermediate-freuqncy signal, and believe with target seeker by clutter baseband signal by quadrature modulator
Number mixing transmitting clutter radiofrequency signal.
Carried out data transmission it is further preferred that Clutter Model resolves computer by optical fiber with emulation main control computer,
Radiofrequency signal simulation source is controlled by PCI.
Preferably, step S2 further comprises：
S201：To the clutter member in the range of identical Doppler's ring, voltage amplitude, the doppler angle of each clutter member are calculated
Resolved with phase；
S202：Power superposition is carried out in orientation apart from loop data to each；
S203：Repeat the above steps S201 and S202, the echo of all pulses in one relevant treatment time interval of emulation
Signal.
Preferably, identical Doppler's ring is that radar return doppler velocity identical is divided；
Rang ring is that radar return is divided apart from identical.
Preferably, Clutter Model is resolved in flow, and the calculating of Clutter Model includes serial computing and parallel computation, wherein,
Clutter power calculates and uses parallel computation.
Preferably, multisystem includes Windows systems, RTX systems and CUDA systems.
Preferably, clutter real-time semi-physical emulation platform be provided for data interaction between Windows and RTX it is shared in
Deposit.
It is further preferred that shared drive is additionally operable to the data interaction between CUDA and RTX.
Preferably, multisystem data interaction includes with transmission：
Pass through interaction to RTX in the CUDA clutter base band datas resolved；
The communication module of data is transmitted in exploitation with emulation main control computer by optical fiber on RTX；
The communication module that exploitation passes through PCI interaction datas with radiofrequency signal simulation source on RTX.
Beneficial effects of the present invention are as follows：
The clutter simulation method in kind of the radio frequency based on GPU half of the present invention, it is flat by building the emulation of clutter real-time semi-physical
Platform, the model divided using CUDA threads block, the medium Doppler's ring of thread programming realization Clutter Model, equidistant ring ground
Concurrent operation, and data interaction and transfer software module between CUDA, windows, RTX are developed, realize that sea clutter model data exists
Sea clutter model is modulated to intermediate frequency by interaction and transmission in many hardware and software systems, radiofrequency signal simulation source using quadrature modulator
Signal is simultaneously mixed to radio-frequency transmissions, so as to realize sea clutter analogue echoes, improves simulation velocity, it is ensured that seeker electromagnetism ring
Border it is true to nature.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the clutter simulation method and step figure in kind of the radio frequency based on GPU half.
Fig. 2 shows clutter real-time semi-physical simulation platform structure block diagram.
Fig. 3 shows that clutter member is carried out to clutter divides schematic diagram.
Embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
Belong to " first ", " second " etc. in description and claims of this specification and above-mentioned accompanying drawing are to be used to distinguish
Different objects, rather than for describing particular order.In addition, term " comprising " and " having " and their any deformations, meaning
Figure is to cover non-exclusive include.For example contain some row steps or process, method, system, product or the equipment of unit
The step of being not limited to list or unit, but alternatively also include the step of do not list or unit, or alternatively also
Including for these processes, method or the intrinsic gas step of equipment or unit.
A kind of clutter simulation method in kind of radio frequency based on GPU half of the present invention, Clutter Model is realized using GPU technologies
It is parallel to accelerate, and realize GPU and RTX real time operating systems data interaction and transmission.The present invention is by building clutter in real time partly
Physical emulation platform, is drawn using CUDA threads block, the medium Doppler's ring of thread programming realization Clutter Model, equidistant ring ground
Model concurrent operation on point, and data interaction and transfer software module between CUDA, windows, RTX are developed, realize sea clutter
Model data interaction and transmission in many hardware and software systems, radiofrequency signal simulation source utilize quadrature modulator by sea clutter model
It is modulated to intermediate-freuqncy signal and is mixed to radio-frequency transmissions, so as to realizes sea clutter analogue echoes.
It should be noted that clutter will can be said by taking land clutter as an example below with land clutter and/or sea clutter in the present invention
It is bright.
As shown in figure 1, a kind of clutter simulation method in kind of radio frequency based on GPU half, including：
The first step builds land clutter real-time semi-physical emulation platform
As shown in Fig. 2 land clutter real-time semi-physical emulation platform is simulated by land clutter Models computed computer, radiofrequency signal
The system compositions such as source, emulation main control computer, optical fiber.Preferably, land clutter Models computed computer is high-performance computer, its
GTX780 NVIDIA video cards are housed on PCIE slots.Land clutter Models computed computer passes through optical fiber and emulation main control computer
Data are transmitted, radiofrequency signal simulation source is controlled by PCI.Land clutter Models computed computer is responsible for miscellaneous over the ground using GPU technologies
Wave pattern is resolved parallel, produces land clutter baseband signal, and will be sent to radiofrequency signal mould per frame land clutter baseband signal
Plan source.Emulation main control computer is used to calculate current guided missile and the flight parameter of target, sends the calculating of land clutter Models computed to
Machine is used for Models computed.Radiofrequency signal simulation source by land clutter baseband signal by quadrature modulator generate intermediate-freuqncy signal, and in
With guidance header signal mixing transmitting land clutter radiofrequency signal.
It should be noted that in the present invention, seeker signal is sent to radiofrequency signal simulation source, real-time semi-physical emulation is flat
Platform can also include frequency spectrograph, for being monitored to radiofrequency signal simulation source.
In the present invention, graphics processor (English：Graphics Processing Unit, abbreviation：GPU), also known as show
Core, vision processor, display chip, be it is a kind of special in PC, work station, game machine and some mobile devices (such as
Tablet personal computer, smart mobile phone etc.) epigraph operation microprocessor.RTX is that (Real Time eXpert) is that Tengxun is public
The enterprise-level real-time communication platform released is taken charge of, is directed to helping enterprise to improve operation efficiency, reduces communication cost, expands merchant
Meeting, be a kind of height can manage, low cost, the IT platforms easily disposed.RTX is integrated with abundant communication way, including text meeting
Words, voice/video exchange, SMS, file transmission, IP phone, Web conference and Application sharing, electronic whiteboard
Deng remote collaboration mode.A kind of universal parallel computing architectures released by NVIDIA of CUDA, the framework makes GPU can solve the problem that complexity
Computational problem.It contains the parallel computation engine inside CUDA instruction set architectures (ISA) and GPU.
Second step carries out land clutter model using GPU and resolved parallel
Specifically include：
2.1 land clutter ground divide parallel computing
Divided as shown in figure 3, carrying out effective land clutter member to ground：To land clutter member in the range of identical Doppler's ring, meter
Voltage amplitude, doppler angle frequency and the phase for calculating each land clutter member are resolved；Then to it is each apart from loop data in orientation
It is overlapped；Assuming that in a relevant treatment time interval (CPI), target seeker and target location change are ignored, so that it may
To repeat the echo-signal that previous step emulates all pulses in a CPI.It is to draw on ground according to ring-type in the calculating process
It is divided into block, data are separate between ring and ring, block and block, belongs to typical Method on Dense Type of Data Using and parallel data, uses
CUDA Large-scale parallel computings accelerate.
In the present invention, identical Doppler's ring is that radar return doppler velocity identical ground is divided, the dotted line in such as Fig. 3
Divide；Each rang ring is that radar return is divided apart from identical ground, and the solid line in such as Fig. 3 is divided；Folded in orientation
Plus refer to add up the power of rang ring this circle.
2.2 land clutter Models computed flows
Employing on the basis of CUDA parallel computations accelerate ground clutter member to resolve, the calculating of land clutter model by serial and
Parallel composition, algorithm is serially performed on the whole, and the part such as land clutter power calculation therein uses parallel computation.CUDA journeys
Sequence beginning task is completed by GPU, and other parts are completed by CPU, and kernel calculating section therein needs manual compiling
Program, the interface function that FFT directly invokes CUDA SDK offers is completed.
Refer to carry out Clutter Model calculating in each clutter member is divided it should be noted that clutter member is resolved；Clutter Model
Calculating refers to calculate clutter member and radar relativeness, calculating clutter echo power.In clutter calculation process, parameter setting and
Clutter member is divided into serial execution, and the generation of clutter member power calculation and carrier (boc) modulated signals can be parallel computation.
3rd step multisystem data interaction is developed with transport module
During design effectively land clutter signal is produced in the application method, data interaction between many soft and hardware systems
With transport module.Data interaction data are interacted by opening up one piece of shared drive between Windows and RTX.Because NVIDA is public
Department provides video card or GPU calculating card drivings currently without for RTX systems, and GPU complexity is too high and interface underground,
User can not possibly be under self-developing RTX video driver, therefore data interaction between CUDA and RTX also by with Windows phases
Same shared drive carries out data interaction.CUDA resolve land clutter base band data by interaction arrive RTX, on RTX develop
The communication module of data is transmitted by optical fiber with emulation main control computer, develops and is interacted with radiofrequency signal simulation source by PCI on RTX
The communication module of data.
In the present invention, realize to be received the bullet mesh resolved by emulation main control computer by land clutter Models computed computer and flown and join
Number is inputted as land clutter Models computed, using the parallel post Clutter Models of GPU on land clutter Models computed computer, is opened
Multisystem data interaction and transport module are sent out, the software systems such as GPU, Windows, RTX, and land clutter parallel computation mould is realized
Data interaction and transmission between the hardware system such as type and optical fiber, PCI, so that by land clutter baseband signal input radio frequency signal imitation
Device, is modulated to intermediate-freuqncy signal, and be mixed to radio frequency hair with guidance header signal using quadrature modulator therein by land clutter model
Penetrate, so as to realize land clutter echo-signal 1ms real-time semi-physical emulation.
It is worth noting that, in terminal device embodiment, included unit is simply drawn according to function logic
Point, but above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, each functional unit is specific
Title is also only to facilitate mutually distinguish, the protection domain being not intended to limit the invention.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in above-mentioned each method embodiment
It can be by program to instruct the hardware of correlation to complete, corresponding program can be stored in a kind of computer-readable recording medium
In, storage medium mentioned above can be read-only storage, disk or CD etc..
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms, all embodiments can not be exhaustive here, it is every to belong to this hair
Row of the obvious changes or variations that bright technical scheme is extended out still in protection scope of the present invention.
Claims (10)
1. a kind of land clutter radio frequency Hardware In The Loop Simulation Method based on GPU, it is characterised in that including：
S1：Build clutter real-time semi-physical emulation platform；
S2：Clutter member is carried out to clutter based on Doppler's ring to divide；
S3：The clutter member of division is resolved parallel using GPU technologies and baseband signal is produced；
S4：Calculate guided missile and target flight parameter；
S5：Multisystem data interaction and transmission are carried out, transmitting clutter radiofrequency signal is completed.
2. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 1, it is characterised in that the clutter is land clutter
And/or sea clutter.
3. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 1, it is characterised in that the clutter is partly real in real time
Thing emulation platform includes Clutter Model and resolves computer, radiofrequency signal simulation source, emulation main control computer and optical fiber, wherein
The Clutter Model resolves computer, and Clutter Model is resolved parallel using GPU technologies, produces clutter base band letter
Number, and the radiofrequency signal simulation source will be sent to per frame clutter baseband signal；
The emulation main control computer, the flight parameter for calculating current guided missile and target sends the Clutter Model solution to
Calculate computer and carry out Models computed；
The radiofrequency signal simulation source, generates intermediate-freuqncy signal, and believe with target seeker by clutter baseband signal by quadrature modulator
Number mixing transmitting clutter radiofrequency signal.
4. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 1, it is characterised in that the Clutter Model is resolved
Computer is carried out data transmission by optical fiber with the emulation main control computer, and the radiofrequency signal simulation source is controlled by PCI.
5. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 1, it is characterised in that the step S2 is further
Including：
S201：To the clutter member in the range of identical Doppler's ring, voltage amplitude, doppler angle and the phase of each clutter member are calculated
Position is resolved；
S202：Power superposition is carried out in orientation apart from loop data to each；
S203：Repeat the above steps S201 and S202, the echo-signal of all pulses in one relevant treatment time interval of emulation.
6. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 5, it is characterised in that
Identical Doppler's ring is that radar return doppler velocity identical is divided；
The rang ring is that radar return is divided apart from identical.
7. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 5, it is characterised in that Clutter Model resolves flow
In, the calculating of Clutter Model includes serial computing and parallel computation, wherein, clutter power calculates and uses parallel computation.
8. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 1, it is characterised in that the multisystem includes
Windows systems, RTX systems and CUDA systems.
9. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 1, it is characterised in that the clutter is partly real in real time
Thing emulation platform is provided for the shared drive of data interaction between Windows and RTX, the shared drive be additionally operable to CUDA with
Data interaction between RTX.
10. land clutter radio frequency Hardware In The Loop Simulation Method according to claim 8, it is characterised in that the multisystem data
Interaction includes with transmission：
Pass through interaction to RTX in the CUDA clutter base band datas resolved；
The communication module of data is transmitted in exploitation with emulation main control computer by optical fiber on RTX；
The communication module that exploitation passes through PCI interaction datas with radiofrequency signal simulation source on RTX.
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| CN112415482A (en) * | 2020-09-30 | 2021-02-26 | 中国人民解放军63892部队 | Radio frequency injection type digital signal synthesis simulation test system |
| CN112578346A (en) * | 2020-11-25 | 2021-03-30 | 中国人民解放军63892部队 | Broadband radar target echo signal simulation system and simulation method |
| CN112578346B (en) * | 2020-11-25 | 2023-07-18 | 中国人民解放军63892部队 | Broadband radar target echo signal simulation system and simulation method |
| CN112816951A (en) * | 2020-12-24 | 2021-05-18 | 北京仿真中心 | Vehicle-mounted radar simulation internal field testing device and method |
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