CN107315168A - A kind of software implementation radar signal data handling system and method - Google Patents
A kind of software implementation radar signal data handling system and method Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- 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
- G01S7/285—Receivers
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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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention relates to a kind of software implementation radar signal data handling system and method, it is intended to solves the problem of prior art has the expansion difference that the limitation of software implementation radar frame structure is caused, the application includes hardware layer, system layer, intermediate layer and application layer；Intermediate layer is to realize the versatility between different hardware platforms.It is located between application layer and system layer, provides generic service for upper strata, the routine interface with general protocol stack and standard.Middleware is shown including part in the middle of data receiver middleware, data transfer middleware, real-time storage middleware, signal transacting middleware, data processing and radar terminal；Application layer based intermediate layer builds signal-data processing framework, and radar signal data processing function is divided into many components and module, wherein containing the functions such as platform feature management and radar real time data processing.By the modification to application layer software module in system, system can be reconfigured, so as to meet the demand of other radar systems, sets up complete Radar Signal Processing flow, improves the expansion of the system, expand the system and use scope；The application is applied to software implementation field of radar.
Description
Technical field
The present invention relates to software implementation Radar Design field, it particularly relates to a kind of software implementation radar signal data processing
System and method.
Background technology
During modern operation, radar detection has become the main path of its acquisition of information.In Campaign Process, make
The rapid advances of war environment, object and countermove require the design of radar system and updated also to can adapt to this quick change
Rhythm.The characteristics of conventional radar is due to its functional performance and system hardware and software structure hard coupling, causes its construction cycle long, ties up
Shield and scaling difficulty, and software implementation radar follows open architecture, using commercial shelf product as one kind, can
Possesses the radar neomorph of consistent standard and specification.In software implementation radar, digital back-end be bearing system efficient design,
Function remodeling, the core of performance boost.Software implementation radar refers to that " based on open software/hardware platform, software implementation defines system work(
The radar system of energy ", system needs to be decomposed in strict accordance with the function of needing in radar system, generally use " radio-frequency front-end+
The system architecture of digital back-end ", under above-mentioned background, present applicant proposes based on CPU (central processing unit)+GPU (graphics process
Device) heterogeneous platform software implementation radar signal data processing platform (DPP).The application is based on typical radar signal-data processing technology institute
Comprising algorithm and the research to signal processing algorithm concurrency.Typical radar signal transacting includes four parts：Digit pulse
Compression, digit pulse accumulation, clutter processing, CFAR detection.Typical radar data processing is contained at Target dots processing and flight path
Reason.By studying existing signal parallel processing platform, with reference to software implementation radar feature, selection CPU+GPU isomeries are put down
Platform realizes radar signal data processing technique.
The content of the invention
It is an object of the invention to：Solving prior art, to there is the expansion that causes of software implementation radar frame structure limitation poor
The problem of, the invention provides a kind of fast software implementation radar signal data processing system of open, reusable, development rate
System and method.The technical solution adopted by the present invention is as follows：
The invention provides a kind of software implementation radar signal data handling system, including hardware layer, system layer, intermediate layer and
Application layer；The intermediate layer is located between application layer and system layer, is that upper strata (application layer) provides generic service, the general clothes
Business include with general protocol stack and standard routine interface, including data receiver middleware, data transfer middleware, in real time
Storage Middleware Applying, signal transacting middleware, data processing centre part and radar terminal show middleware；The application layer is in
Interbed, which builds signal-data processing framework, to be used to calculate current radar data and signal, including radio-frequency front-end data receiver, in real time
Storage, signal transacting, data processing and terminal are shown.
Specifically, the hardware layer is shown including signal transacting carrying platform, data processing carrying platform and radar terminal
Equipment；The signal transacting carrying platform, is handled in real time for carrying out intensive calculating and carrying out radar；The data processing is held
Carrying platform, for carrying out radar data processing task；The radar terminal display device, for finally showing various radar returns
Data.
Specifically, part uses the concurrent_bounder_queue in Intel tbb in the middle of the data processing
(concurrent_bounder_queue is a queue inside Intel tbb, for realizing data transfer middleware).
Specifically, the data receiver middleware, receives different types of data；The data transfer middleware, transmission
Data；The radar data of the real-time storage storage includes time point, radar control word and the radar data information of storage；It is described
Signal transacting middleware comprising pulse compression, pulse accumulation, clutter processing between part, be not limited in actual applications this it is several in
Between part；Part is that the target component information got to signal processing module carries out the pretreatment of point mark, boat in the middle of the data processing
Mark formation is handled；The terminal shows that middleware is shown to the data received.
Specifically, the radio-frequency front-end data receiver thread is initialized to receiving module initialization, data transfer middleware
And binding core cpu；The data storage threads store front end signal together with system time parameter；The signal transacting
Thread obtains the data of front end thread transmission, obtain radar return information sum according to this and storage target data buffering area ground
Location, judges whether the radar control word in radar return information changes, if changed, in the middle of the part of signal transacting
Part carries out Reparametrization；The data processing threads, obtain target data and radar information, whether judge radar control word
Change, control word changes, then the interface class to data processing is re-created, if control word does not change, obtain final
Data；The terminal shows thread, the final data of display data processing thread transmission.
Present invention also provides a kind of software implementation radar signal data processing method, comprise the following steps：Step 1：Obtain
Radio-frequency front-end echo data, obtains radar radio-frequency front-end echo data, then data are led to by radio-frequency front-end data receiver thread
Cross data transfer middleware and send signal transacting thread to；Step 2：Process signal, step 2.1：Pass through signal transacting thread pair
Signal transacting middleware is initialized, and obtain data transfer middleware transmission radio-frequency front-end echo data and according to radio frequency
Front end data setting signal processing parameter, and call part in the middle of radio-frequency front-end data to data processing to obtain again in the middle of data processing
Part transmission radar return information sum according to this and storage target data buffering area address；Step 2.2：Judge that radar return is believed
Whether the radar control word in breath changes, if changed, and parameter is carried out to signal transacting middleware and resets and calculates
Target data is simultaneously transmitted to part in the middle of data processing, if do not changed, to radar return information and target data and storage
The address computation of target data buffering area obtains target data and transmitted to part in the middle of data processing；Step 3：Processing data, passes through
Data processing threads obtain the target data that part is transmitted in the middle of data processing and judge whether radar control word changes, if changed
Become, then the interface class to data processing re-create reprocessing and transmit result to radar terminal showing middleware
It has been shown that, if do not changed, row data processing and by result transmit to radar terminal show middleware show；Step 4：It is aobvious
Show, show that thread is initialized to interface by terminal and obtain the signal-data processing of other threads transmission again and tie processing
Fruit is shown.Specifically, in addition to step：The data of data transfer middleware transmission are obtained by data storage threads and are obtained
Current time stamp is taken to store together.
Specifically, the step 2 is specially：Step 2.1.1, enabling signal processing thread is simultaneously called
InitRadarDSPSys interfaces, are initialized to signal transacting middleware, the Start letters of then waiting signal data processing
Number, after the signal is received, call front end data to transmit the Dequeue interfaces of middleware, acquisition connects from radio-frequency front-end data
The data that take-up journey is transmitted；Then the parameter for calling SetSysParamter interfaces setting signal to handle；Step 2.1.2,
Transmission objectives data to data is called to handle the GetOneBuff interfaces of thread middleware and obtain in the middle of digital echo respectively
The Dequeue interfaces of part, obtain radar return information sum according to this and storage target data buffering area address；Step 2.2.1,
Judge whether the radar control word in radar return information changes, if changed, in the middle of the part of signal transacting
Part carries out Reparametrization：ResetParameter interfaces are called, all parameters are resetted, then just called
SetSysParamter interfaces are reset to signal transacting middleware parameter, order when not changing according still further to radar control word
Signal transacting is carried out, calls SetSampleSignal interfaces to obtain digitized radar echo data and parameter first, then calls
DoProcess interfaces carry out signal transacting to data, by calling GetSignalProcOut interfaces to be obtained after data processing
Data from GPU is transferred to internal memory, then the EnQueue interfaces of transmission objectives data to data processing thread middleware will be slow
Regional address storage is rushed into queue, finally calls thread-data to transmit the RefreshBuff interfaces of middleware；If do not changed
Become, then the address computation to radar return information and target data and storage target data buffering area obtains target data and transmitted
Part in the middle of to data processing；Step 2.2.2, line is shown by the Get middlewares in call signal processing in Show interfaces, terminal
Journey and signal corresponding thereto groove simultaneously show the data image after signal transacting middleware processes in real time, circulate aforesaid operations, directly
Exited to thread.Wherein Dequeue, SetSysParamter, GetOneBuff, ResetParameter,
GetSignalProcOut, SetSampleSignal, EnQueue, RefreshBuff, read_new, GetTrackInfo,
Data_treat, PShow, RefreshBuff are interface function name.
Specifically, the step 3 is specially：Step 3.1, log-on data handles thread and the interface class to data processing is entered
Row is created and initialized, and is obtained after Start signals, the DeQueue interfaces of transmission objectives data middleware after call signal processing
Target data and radar information are obtained again；Step 3.2, judge whether radar control word changes, if control word changes, logarithm
Re-created according to the interface class of processing, control word does not change, then call read_new interfaces, read target data, then
By data_treat interfaces carry out data processing, after data duplication is come out by GetTrackInfo, recycle PShow connect
The signal groove interface that mouth calls terminal to show carries out the display of final data；Step 3.3, in the step 3.2 in processing procedure
It is intended to call the RefreshBuff interfaces of data transfer middleware, the address of buffering area is handled.
Specifically, step 4 is specially：Step 4.1, terminal shows that thread is initialized to interface；Step 4.2, pass through
Connect functions show terminal signal receiver function and groove functional link in thread get up, and set up other in application layer
Thread；Step 4.3, Start signals are got, signal-data processing is proceeded by, while the result to signal-data processing is entered
Row display.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the application can be can be reconfigured by the modification to application layer software module in system, system, so that full
The demand of other radar systems of foot, can set up complete Radar Signal Processing flow, improves the system according to practical application
Expansion, expand the use scope of the application；2. the software implementation method for processing radar signals in the application have generalization,
Modularization, parametrization, the advantage of cross-platform transplanting；3. system hardware can use the product of commercial shelf, institute in the application
Possess the features such as having standardization, easily expansion and restructural with the application system hardware module；4. all processing in radar system
Task all realizes that system has more powerful parallel processing capability, can complete many in normal radar by software
Plant the processing of signal；5. the application is focused on the decoupling of software and hardware, is passed through software definition and ginseng with open architectural framework
Number sets quick development of Radar system, flexibly realizes resource distribution, Function Extension and performance boost.
Brief description of the drawings
Fig. 1 is invention software radar system basic module structure；Fig. 2 is that invention software radar general structure is shown
It is intended to；Fig. 3 is invention software radar application layer block schematic illustration；Fig. 4 is invention software radar application layer application layer
Frame diagram；Fig. 5 is invention software radar application layer framework processing general flow chart；Fig. 6 is invention software radar radio frequency
Front end data receiving thread process chart；Fig. 7 is invention software radar data storage thread process flow chart；Fig. 8 is
Invention software Radar Signal Processing thread process flow chart；Fig. 9 is invention software radar data processing thread process
Flow chart；Figure 10 is invention software radar terminal display processing flow chart；Figure 11 is invention software radar number
Scheme according to the definition of middleware interface class is received；Figure 12 is the radar data DataBuff structure figures of invention software radar；Figure
13 be the radar control word RadarCtl structure figures of invention software radar；Figure 14 is that invention software radar data is passed
Defeated middleware structure figure；Figure 15 is invention software Transmission System of Radar Data middleware interface definition figure；Figure 16 is that the present invention is soft
Part radar data storage interface class definition figure；Figure 17 is the middleware interface definition of invention software Radar Signal Processing part
Figure；Figure 18 is invention software radar SignalToData structure figures；Figure 19 is invention software Radar Signal Processing
Function remodeling figure；Figure 20 is invention software radar data processing middleware interface definition figure；Figure 21 is invention software
Radar TrackInfo structure figures；Figure 22 is that invention software radar terminal shows middleware interface class definition figure；Figure
23 be invention software radar system interface relationship figure；Figure 24 is invention software radar signal flow chart of data processing figure；
Figure 25 is invention software radar system time schedule controller structure chart；Figure 26 is invention software radar system processing system
Building-block of logic；Figure 27 is invention software radar embodiment application layer framework schematic diagram；Figure 28 is invention software
Radar signal flow chart of data processing figure；Figure 29 is one pulse reproducibility period treatment maximum time, mean time of software implementation radar
Between, minimum time schematic diagram；Figure 30 is one pulse reproducibility period treatment time diagram plotting table of invention software radar；
Figure 31 is that invention software radar accumulates 32 pulse processing maximum times, average time, minimum time schematic diagrames；Figure 32 is
Accumulate 32 pulse processing time plotting tables；Figure 33 is that cpu resource occupies signal in CPU+GPU Software Radar signal datas
Figure.
Embodiment
A kind of software implementation radar signal data handling system and method, are specifically included：
1. the digital information processing hardware platform based on CPU+GPU
For a hardware platform, signal transacting carrying platform, data processing carrying platform and radar are respectively necessary for whole
Hold display device.The application uses the digital information processing hardware platform based on CPU+GPU.
2. based on the support of CPU+GPU heterogeneous platforms system, mainly include Redhawk systems, NightStar real-time programming works
Tool, Intel TBB concurrent developments storehouse.
3. based on the intermediate layer of CPU+GPU signal-data processing platforms, specifically include：
3.1 data receiver middlewares, unified interface should be set by realizing during data transfer middleware, according to different need
Ask and use different middlewares.Technically using the characteristic of the virtual succession in C++ different middlewares can be allowed to reflect
The interface of unified standard is mapped to, so as to realize different functions.Data receiver middleware and the interface of application layer are defined.By setting
The middleware of certain type transmission card middleware or reading echo data, can be mapped in the interface class by fixed unified interface.Carry
And DataBuff structures and RadarCtl structures define figure and see accompanying drawing.Wherein iRadar_Flag represents radar control word
Whether change, iCnt represents the orientation code of radar, iLen represents to receive the length of the single passage of data, and iChennel represents passage
Number, pRadarCtl represents the pointer of radar control character, and pBuffer represents the pointer of the echo data of radar.Wherein
PRadarCtl represents the pointer of radar control character.
3.2 data transfer middlewares, for mass data transmission using Intel tbb in CPU+GPU isomery framework
In concurrent_bounder_queue realize data transfer middleware.Data transfer middleware uses thread-safe team
Alignment builds two buffering area node address queues, and one of queue stores the buffering area node address used, another
Queue stores untapped its interface class of buffering area node address and is defined as follows, and wherein Data refers to the data of needs transmission.
For single shaping or without symbol shape data, GCC in Linux is used to compile in CPU+GPU isomery framework
Translate the atomic operation that device is carried.Pass through _ _ sync_lock_test_and_set functions transmission shape data, pass through _ _ sync_
Fetch_and_add functions receive this shape data in other threads, thereby may be ensured that data can will not be by other
Program interrupt and guarantee sequential delivery.
3.3 real-time storage middlewares, the radar data of real-time storage storage contains the time point of storage, radar control word
With radar data information, accompanying drawing is shown in the definition of its interface.
3.4 signal transacting middlewares, signal processing module is contained in the middle of pulse compression, pulse accumulation, clutter processing etc.
Part.Accompanying drawing is shown in the interface definition of its partial function.The Signal ToData structures being related to are shown in accompanying drawing.Signal ToData
It is that signal transacting thread is sent to the structure of data processing threads.It is required by being called in DoProcess function interfaces
The middleware of signal processing function, the characteristics of using software implementation radar function restructural, enters to different radar applications exploitation demand
Row quick response, reduces the development time of radar significantly.
Part in the middle of 3.5 data processings, data processing is that the target component information got to signal processing module carries out point
The processing such as mark pretreatment, Track forming.In CPU+GPU isomery frameworks, accompanying drawing is shown in the definition of its function interface.TrackInfo is tied
Structure body is shown in accompanying drawing.
3.6 radar terminals show middleware, and radar terminal is carried out in CPU+GPU isomery frameworks using QT Development Frameworks
Exploitation.The transmission to different pieces of information is needed to create different signal transfer functions, accompanying drawing is shown in the definition of its part of interface.
Display terminal is after program startup, groove function and signal transfer function inside connection.The function of other threads
By calling the interface function in upper figure, display thread is transferred data to, is then shown.
4. based on the application layer of CPU+GPU isomery architecture platforms, real-time Linux is used in CPU+GPU isomery framework
Used as system platform, therefore in application layer based on portable operating system interface (POSIX, Portable
Operating System Interface of UNIX) the Pthread threads of standard build signal-data processing framework, the line
Journey can be carried out transplanting in all class Unix operating systems and use.Its framework is shown in accompanying drawing.Application layer framework is included
Five parts, respectively radio-frequency front-end data receiver, signal transacting, real-time storage, terminal is shown and data processing.Next
Application implementation process to each part is illustrated.
4.1 radio-frequency front-end data receiver threads, after radar radio-frequency front-end data are by transmission card, are passed to processor
In.System distributes a core cpu to the thread, and transmits current thread to other threads using data transfer middleware
Data.Its handling process is shown in accompanying drawing.Data receiver thread just carries out various initialization to whole module after start up, including right
Initialization, the initialization of data transfer middleware and binding core cpu of receiving module etc., then waiting signal data processing
Start signals, after the signal is received, the middleware of transmission data just calls GetOneBuff, then will receive
In the corresponding Buff of data Cun Chudao, that is, the DataRec interface functions of data receiver middleware are called, finally by the ground of the Buff
Location pointer is put into BuffUsedQueueItem queues.Then proceed to repeat to call GetOneBuff, until thread interrupt
Exit.
4.2 real-time storage threads, real-time storage thread is that the parameters such as front end signal and system time are collectively stored in into text
Thread in part, handling process is shown in accompanying drawing.Real-time storage thread just creates the text using present system time as name upon actuation
Part as the address, then waiting signal data processing of data storage from now on Start signals, it is first after the signal is received
The function of time series is first called, is obtained after present system time stamp, the Dequeue for calling front end data to transmit middleware connects
Mouthful, the data pointer address transmitted is released from BuffUsedQueueItem, then deposited by data together with timestamp
Storage hereof, has stored after data file, has recalled RefreshBuff interface functions, by the data pointer after use
Address is pushed into BuffFreeQueueItem queues.The function for then proceeding to repeat to call time series obtains timestamp,
Until thread interrupt is exited.
4.3 signal transacting threads, the existing part run in CPU of signal transacting thread, also there is the part run in GPU,
Thread needs to bind a core cpu, the time loss such as prevent other processes from seizing.Because signal transacting middleware needs basis
The parameters such as radar control word are initialized, after radar control word changes, and the part middleware of signal transacting needs
Reset parameter.See accompanying drawing.Signal transacting thread just calls InitRadarDSPSys interfaces upon actuation, to signal transacting
Middleware is initialized, then the Start signals of waiting signal data processing；After the signal is received, front end number is called
According to the Dequeue interfaces of transmission middleware, the data transmitted from front end of line journey are obtained；Then SetSysParamter is called
The parameter of interface setting signal processing, because the first frame radar return data handle follow-up signal no any influence, therefore
Data are not handled, directly invoke the RefreshBuff interfaces that front end thread-data transmits middleware.
Then call transmission objectives data to data to handle the GetOneBuff interfaces of thread middleware respectively and obtain number
The Dequeue interfaces of word echo middleware, thus obtain radar return information sum according to this and storage target data buffering area
Address, next just judge whether the radar control word in radar return information changes, if changed, then just
Need to carry out Reparametrization to the part middleware of signal transacting.ResetParameter interfaces are called first, will be all
Parameter is resetted, and then just calls SetSysParamter interfaces to reset signal transacting middleware parameter, next
Order when just can not change according to radar control word carries out signal transacting.SetSampleSignal interfaces are called to obtain first
Digitized radar echo data and parameter are taken, then calls DoProcess interfaces to carry out signal transacting to data, by calling
GetSignalProcOut interfaces by the data obtained after data processing from GPU is transferred to internal memory, then transmission objectives data
EnQueue interfaces to data processing threads middleware store buffer zone address into queue, finally call front end thread
The RefreshBuff interface flags of data transfer middleware to be disposed to a digital echo data-signal.Can be
Signal corresponding thereto groove during Get middlewares and terminal in Show interfaces in call signal processing are shown, so as to reality
When show the data image after signal transacting middleware processes.Aforesaid operations are just finally circulated, until thread is exited.Said process
In, DoProcess is operated in GPU, and DeQueue and EnQueue are operated in CPU, and other functions are then handed in GPU and CPU
Mutually run and transmit data.
4.4 data processing threads, data processing is that the target data obtained after signal transacting is handled.When radar control
After word processed changes, data processing module, which needs to lose, does not change all target datas before control word.Data processing threads
Operate in CPU, in order to improve data-handling capacity, thread is bundled in core cpu by system, and its handling process is shown in accompanying drawing.
The interface class that data processing threads start later just to data processing is created and initialized, then outstanding message
The Start signals of processing, after the signal is obtained, transmission objectives data middleware first after call signal processing
DeQueue interfaces, thread obtains target data and radar information, judges whether radar control word changes.If control word is
Change, then the interface class to data processing is re-created.If control word does not change, read_new interfaces are called,
Target data is read, data processing is then carried out by data_treat interfaces, data are answered finally by GetTrackInfo
Make and, the signal groove interface then shown using PShow interface interchange terminals carries out the display of final data.Finally regardless of thunder
Whether change up to control word, the RefreshBuff interfaces of data transfer middleware will be called, at the address of buffering area
Reason.
4.5 radar terminals show thread, and radar terminal display is developed using QT Development Frameworks, belonged to according to QT exploitation
Property, data display is directly carried out using main thread.Its handling process is shown in accompanying drawing.Radar terminal shows that thread is carried out to interface first
Initialization, is then got up the signal receiver function and groove functional link that show in main thread by connect functions, next
Just other threads set up in application framework, wait the signal-data processing Start signals passed in interface.If received
Signal has been arrived, signal-data processing is just proceeded by, while the result to signal-data processing is shown.In summary, base
In the software implementation radar signal data handling utility layer architecture under CPU+GPU isomeries as shown in accompanying drawing.
Radio-frequency front-end receiving thread is operated in CPU, using the thread to the echo data that is transmitted from radio-frequency front-end
Received, be then respectively transmitted data to signal transacting thread and data storage line by two data transfer middlewares
Journey；Data storage threads are operated in CPU, after echo data is received, and are just stored data；Signal transacting thread was both
There is the part operated in CPU, there is the part operated in GPU again, performed first by the function in CPU and data are carried out
Receive, and transfer data to GPU operation, then data are carried out at signal by the middleware of call signal processing in GPU
Reason, transfers data to CPU after processing, data processing threads is passed data to by data transfer middleware in CPU, and
And the result of part of module is shown by showing that middleware passes to terminal show process；Data processing threads are operated in
In CPU, the target information that signal transacting is obtained is received by data transfer middleware, then calls part in the middle of data processing to carry out
Processing, finally shows that thread is shown by the target data obtained after processing by showing that middleware passes to terminal.
Under normal circumstances, when radar control word does not change, at the software implementation radar signal data based on CPU+GPU isomeries
Reason framework applications layer process chart is shown in accompanying drawing.
Embodiment one
Software implementation radar signal data handling system and method are present embodiments provided, is specifically included as follows：
1. systemic-function and tactics index, whole signal-data processing system receive 4 tunnels that radar receiver is transmitted
Intermediate-freuqncy signal, completes A/D data receivers, signal processing function, data processing function and human-computer interaction interface.
2. systemic-function major function：(1) receive the 4 tunnel intermediate-freuqncy signals transmitted from receiver carry out sidelobe cancellations and
Sidelobe blanking.In this four roads signal wherein two-way for receiver and, poor passage；Other two-way is the accessory channel of receiver；
(2) digital quadrature demodulation and pulse pressure are completed；(3) function of Moveing target indication (MTI) and moving-target detection (MTD) is included, its
Middle MTD is completed by MTI and FFT；(4) one-dimensional CFAR, two dimension CFAR and clutter map CFAR are included；(5) incoherent product is included
The function that tired and M/N is detected；(6) target, orientation and velocity can be calculated；(7) can be by human-computer interaction interface come at setting signal
The function of reason；(8) wherein clutter map needs to include static and dynamic clutter map；(9), can according to the mode of operation of radar
Solve velocity ambiguity；(10) the point mark data real-time reception that Radar Signal Processing System can be produced；(11) Data processing is needed
Carry out Plot coherence, track initiation, target following, target association, flight path benefit point and flight path extinction computing；(12) can be to data
Data after processing draw the flight path of target in real time in the concentric circles that P shows；(13) it can be provided by way of form when circle
Presence target distance and bearing data；(14) can be to CFAR, MTI, MTD, echo data, pulse pressure knot in radar system
Fruit etc. carries out having selection display in real time.
3. the tactics index of system signal data processing：(1) AD converter needs to meet sample rate more than 14MHZ, and has
There are four data channel, the resolution ratio of sampling is 16；(2) MTI is that three pulses are offseted in signal transacting；Doppler in MTD
Wave filter is completed by FFT, and wherein FFT points scope is 8K~32K；False-alarm probability wants≤10-6；M/N criterions are 2/3；(3)
Needed in clutter map comprising static and two kinds of clutters of dynamic；(4) the target points that data processing is handled in being enclosed one should not
Less than 1000 points；(5) human-computer interaction interface carry out P it is aobvious while, can be to the data of the modules such as MTI, MTD in signal transacting
Shown.
4. signal-data processing system interface, the signal-data processing system of software implementation radar system and multiple points of radar
System has close connection, and these subsystems contain receiver, the comprehensive, control and monitor console of frequency.Annexation between them is for example attached
Figure.
5. signal-data processing flow, is required according to radar system, whole signal-data processing in addition to terminal is shown,
It further comprises the signal transactings such as digital quadrature demodulation, pulse pressure, sidelobe cancellation, pulse pressure, CFAR, angle measurement, Plot coherence, data correlation
And data processing function.The frame diagram such as accompanying drawing of whole signal-data processing system.
After the original analog echo that radar is received is changed by ADC, as digital medium-frequency signal, digital medium-frequency signal is needed
Quadrature demodulation could be carried out by the conversion of floating number, twin-channel I, Q signal are become by data after demodulation.Pass through
Amplitude coincidence is high between the signal obtained after quadrature demodulation has I, Q passage, the characteristics of orthogonality is good.
Digital pulse compression has been partially completed the pulse pressure operation of linear FM signal and phase Code.CPU first is by 4 passages of AD cards
Collect data and give GPU, GPU completes the side that sidelobe cancellation suppresses antenna by two auxiliary branch signals pair and channel signal
Valve is disturbed, then by MTI either MTD clutter reductions, so as to improve signal to noise ratio.Use MTD that MTI+FFT realizes not only can be with
Improve signal to noise ratio, additionally it is possible to improve signal to noise ratio.With tributary signal after to CFAR detection and no-coherence cumulating, to detection
The signal arrived carries out angle solution by joint and passage and poor passage.Ultimately form Targets Dots.Then Targets Dots are passed
Data processing module is transported to, by carrying out Plot coherence, track initiation, monotrack and data correlation scheduling algorithm to target,
Data when front ring and the point that can stablize flight path according to formation with former number of turns are transferred to terminal module and carried out by final exclusive PCR
Display.
6. signal-data processing rear end design, software implementation radar system design uses the product of commercial shelf, i.e.,
It can be realized for hardware device all in system by way of commercial product is bought.In the present system, contain
Collection, processing, storage, control.Whole system can be so allowed to be built based on open calculating structure.The system is most
Complete eventually quantization to target echo signal, signal transacting, data processing, the record for carrying out raw radar data, to signal
Processing, the result and final result of Data processing part of module carry out terminal and the function such as show, are that radar system is carried
An efficient, open, reusable real time signal data processor is supplied.
7. data collecting system, data collecting system is ADC converters, it needs to complete four road intermediate frequency analogue echo letters
Number synchronous acquisition and conversion.According to the index of radar receiver signal, the IF-FRE of collection signal is 10.5MHz, signal
Bandwidth has 2MHz, 7MHz.Because signal is bandpass signal, so ADC sample frequency fsIt must is fulfilled for bandpass sampling law：
2fH(m+1)≤fs≤2fL/m(0≤m≤M) (1-1)
Wherein, fHFor the highest frequency of signal, fLFor the low-limit frequency of signal, M is no more than fH/ B highest positive integer.
According to signal characteristic, fLFor 7MHz, fHIt can be less than 2 positive integer for 14MHz, M with value.From systematic parameter above, m takes
Value 1, now fsFor 14MHz, therefore 14MHz is as ADC sample frequency, if while signal bandwidth is 2MHz, according to band logical
Sampling thheorem, sample frequency is also without change.
Analysis more than, the key technical indexes of ADC system and requirement are as follows：(1) 4 sampling channel number；(2)
14MHz sample rates；(3) highest 7MHz signal bandwidth；(4) resolution ratio of ADC acquisition systems is 16bit；(5) use
PCIe2.0*8 coffret.System requirements more than, and the scalability required for system, can choose use
The M4i.4411-x8 capture cards of SPECTRUM companies, highest sample rate is 130MHz, 4 passages, 16bit resolution ratio, with PCIe
2.0x8 interface is connected with computer.
8. data-storage system, signal processor needs intermediate frequency of the echo data received to radar after ADC is gathered
Signal is recorded in real time, to later stage being analyzed and being played back to data.
According to the parameter of radar system, radar horizon 120KM, 14MHz, 16bit, 4 passages of sample frequency, pulse
Repetition rate 1000Hz, then in 1 second, system needs to record 2*120e3/3e8*14e6*4*2*1000=89.5MBytes, such as
Fruit system 10 hours of record continuous to echo data, system storage capacity needs 3.25TBytes.
Meanwhile, whole record system needs the writing speed supported to be 89.5Mbytes/S, according to these analyses, data note
The leading indicator of recording system is as follows：(1) recording capacity：Not less than 4TBytes (2) writing speed：Not less than 89.5MBytes/S
According to these indexs, 12TBytes SFF SAS disk array is selected, transmission speed is 12*1024MBytes/S.
9. serial ports 422 is transmitted, the monitoring subsystem of radar monitors the working condition of radar, and it can be by the work shape of radar
State is transferred in signal-data processing system, while radar also needs to its orientation code being transferred to signal processing module, to determine
The orientation of target.In the radar system, the serial ports speed of the control word of the control subsystem transmission radar of radar and radar side
The speed of bit code transmission is different.The control word of radar is transmitted according to the 115200bps transmission rate of serial ports 422, and thunder
The orientation code reached is transmitted according to 9600bps transmission rate.Analyzed more than, the key technical indexes of Serial Port Transmission and requirement
It is as follows：The RS422 passages of (1) 2 tunnel independence；(2) transmission rate subsistence level meets 115.2Kbps；(3) coffret is
PCIe, according to system requirements, the CP-132L serial port boards that have selected Moxa carry out the transmission of orientation code and control word, and it supports two
Individual independent RS-422 mouths, using PCIe interface, peak transfer rate is 921.6Kbps, can be applied to a pair of multiple spots
Application environment.
10. system sequence controller, according to the system requirements of radar, system sequence controller needs to receive the comprehensive clock of frequency
Signal, impulse ejection starting signal, pulse frequency conversion home signal, while the sampling clock and sampling starting signal of AD cards are connect,
So as to control the overall process of the data acquisition of AD cards.Its structure chart is as follows.
System sequence controller is needed according to the trigger signal of the reference clock of radar and impulse ejection, exports AD cards
Trigger signal and collection clock.System sequence control module needs to ensure that the trigger signal of AD cards and collection clock can be same
Step, both rising edges need alignment, because if not aliging, and the data that AD is collected will stagger a collection point.System
It is 14MHz that AD, which gathers clock frequency, in system, i.e. the clock cycle is 71ns, and synchronization accuracy between the two needs to control in 35.5ns
Within, thus time schedule controller control accuracy need within 10ns.It is as follows according to above-mentioned analytical technology index and requirement：
(1) signal pulse of input system clock is 14MHz, and signal is TTL level；(2) input transmitting pulse triggering signal and
Frequency conversion home signal is all Transistor-Transistor Logic level；(3) system needs to reach within 10ns the control accuracy of time.
11. processing system, the system uses the signal processing system of CPU+GPU isomery frameworks, this system possesses radar
The real-time computing of signal transacting and data processing required for system, can carry out digital quadrature solution to target echo signal
The functions such as tune, signal transacting, data processing.
System operationally, the trigger collection signal that AD capture cards are transmitted in waiting system time schedule controller, when adopting
Collect after starting signal arrives, it is from radar receiver and, the four road intermediate frequencies letters such as gun parallax, accessory channel 1 and accessory channel 2
Signal processing system number is input to, the comprehensive clock signal of frequency is to system sequence controller, and four tunnel analog signals are by four-way track data
The sampling clock and sampling trigger signal that collector is produced using system controller under the control of cpu synchronize collection, so
Data are passed into Installed System Memory by PCIe 2.0x8 buses by CPU controls afterwards, then GPU is sent to by Installed System Memory and carry out thunder
Up to signal transacting；The control word of radar and orientation code are transferred in Installed System Memory by serial port board simultaneously, are then transmit in CPU
It is configured, control GPU carries out the Radar Signal Processing of different patterns, final system can be by control word, orientation code and number
Disk array is delivered to after the data combination of radar return after word to be stored.This is the process of signal transacting.For data
Processing and terminal show that GPU has been handled later radar data and has been transferred to CPU by Installed System Memory by system, allows CPU to signal
Data after processing carry out data processing, then show.Because the signal transacting work of whole system is completed by GPU
, therefore GPU needs the calculating card of selection performance by force.According to the demand of radar system.The system selects Nividia K40 meter
Card is calculated, its peak value single-precision floating point operational capability is 4.29TFLOPS, and the frequency of video memory is up to 6GHz.
The data processing of whole system transfers to CPU to complete, and because CPU needs to be responsible for real-time storage, gathers AD in real time
Card, control GPU carries out signal transacting, terminal and shows, receives the operation such as serial ports, wherein control GPU, which carries out signal transacting, needs one
Individual single core cpu.Wherein since it is desired that the data after signal transacting are carried out with data processing, therefore normal working frequency
Can not be too low.The system selects the intel cpu chip to strong E5-2643, and its dominant frequency is fully loaded can to reach 3.456GHz, have
There is the process performance of Multi-core.
, it is necessary to plug at least three PCIe card in whole software implementation radar signal data handling system, wherein including one
GPU card is opened, ADC capture cards, serial port board because E5 to the strong CPU inside selected by system is without integrated video card, therefore are also needed to
One common video card, therefore the processor of selection needs the slot including at least 4 PCIe.
In order to ensure whole real-time system disclosure satisfy that radar system required for operating environment requirements, system has to energy
It is enough it is determined that calculating required for emulation is completed within the time beat of timing requirements, while allowing for entering outside interruption
Row real-time response, and the switching between system neutral journey can be carried out in real time.
For general Window operating systems and common (SuSE) Linux OS, interrupt response and switching are carried out
Process needs 1ms~10ms or so time, it is impossible to meet the requirement of the signal transacting of real-time system, therefore according to chapter 4 institute
Narration, whole system meets the demand that radar system is handled in real time using real-time Redhawk operating systems.
In summary, the software implementation radar signal data handling system based on CPU+GPU is by using including CPU and GPU
High-performance server, the scheduling and data processing of various events are completed by CPU；By using the real-time behaviour based on Linux
Make system Redhawk there is provided the Real-Time Scheduling support to GPU, so as to realize the high-performance based on CPU+GPU, live signal number
According to processing.
Its main technical indicator and requirement are as follows：(1) computing capability is not less than 3TFLOPS；(2) possessing has PCIe3.0*
16 coffret, continuous transmission speed should not be below 9.5GByte/s；(3) system call delay should not be greater than 20us；
(4) there are no less than 4 PCIe interfaces；(5) the software implementation reconstruct of systemic-function can be realized；(6) storage speed should possess
More than 1.5Gb/s disk array；(7) real-time Linux operating system of GPU Real-Time Schedulings can be supported.
According to the above technical indicator, to whole processing server signal, HP ProLiant DL580 Gen8 are selected,
This server includes 9 PCI-e slots, wherein including 5 x16 of PCI-e 3.0 slot, fully meets the various boards of system
Demand.And because whole system leaves unnecessary slot, more GPU cards can be placed and completed at increasingly complex signal
Reason task.Signal processing algorithm is carried out in systems, GPU software, therefore reconstruction signal Processing Algorithm is all based on, and is only needed
Establishment is reconstructed to GPU algorithm.It is the whole SECO of signal processing system for system clock control card
Device, and this card is upper to being produced by FPGA, even if therefore change radar system or
Change radar working method, it is only necessary to the FPGA programs on clock control card are reconstructed, you can produce required for when
Sequence control signal.In a word, the reconfigurability of whole system can be realized by changing software.And for the autgmentability of system,
Only needing to the GPU card more than addition can complete.Therefore system fully meets the requirement of expansibility.
12. application framework
Due to using the real time operating system based on Linux, and because the module of software implementation radar in the radar system
The features such as change.The system builds the application layer framework of radar system using the POSIX threads for meeting POSIX standard.
For the data transfer between different threads, the biography built using the Intel TBB described in being saved in 4.1.3
Data are transmitted in defeated queue.The system carries out the exploitation at display terminal interface using QT Development of Graphical Interfaces framework.Pass through POSIX lines
Journey, can call in application layer and meet the middleware that radar develops demand, so that system has good expansion and spirit
Activity, can be with the different radar system exploitation demands of quick response.
The application system schema test result is as follows：
Radar signal data handling system needs to meet real-time processing to signal, it is achieved that after CPU+GPU letter
Number processing system has to meet the demand of real-time.
In whole flow process, signal transacting is carried out in GPU.For signal transacting, it is necessary to meet the real-time of radar system
Property demand, below we will to GPU processing time performance analyze.
Analysis radar efforts parameter needs to be designed according to the highest running parameter of radar, wherein radar work ginseng
Number is as follows：Operating distance 120KM, pulse recurrence frequency 1000Hz, IF-FRE 10.5MHz, sample frequency is 14MHz,
It is 32 that 16bit, MTD, which carry out FFT points, that is, needs 32 pulses of accumulation to be and MTD computings are just carried out after MTI.The GPU of calculating
Using K40.
Under these conditions, signal data processor kind is always divided into two parts, an arteries and veins to the part of signal transacting
Rush 32 postimpulse processing of period treatment and accumulation of repeatability.The saddlebag done in one pulse repetition period contains in ADC
Data-moving into GPU, floating number conversion, digital quadrature demodulation, sidelobe cancellation be that weights are solved, apart from pulse pressure, three pulses
MTI.The postimpulse processing of accumulation 32 is included：MTD, modulus, CFAR, Dynamic Clutter Map resolve, seek angle.
According to system operational parameters, system is in a pulse, and the data acquisition points of a passage are 22.4K, due to
Digit is 16bit, then the size of data of collection is 22.4x2x4=179.2KBytes, and in system A/D cards bus bandwidth
For 3.4GBytes/s, GPU bus bandwidth is 9.5GBytes/s, and transmission data need 71.2us.
The GPU in the period treatment of a pulse reproducibility of 5000 times is carried out is measured by NightStar instruments to complete
Time is 0.3ms to the maximum, and the repetition period of system is 1ms, so whole operation system fully meets performance requirement.And I
Can from Fig. 5-8 it is known that GPU carry out data processing during, be always maintained at the shape of high-performance, high concurrent
State, it may be possible in the reliable signal-data processing for software implementation radar signal data processing.Pass through NightStar instruments
Measure and be 0.6ms to the maximum to carrying out the GPU deadlines in the postimpulse processing 5000 times of accumulation 32, and be far longer than accumulation 32
Individual pulse needs 32ms, therefore the calculating time fully meets the demand of system.And in actual process, based on CPU+
Real resource consumption of the GPU software implementation radar signal data handling system to CPU is not high.Carrying out at radar signal data
During reason, only need all to take CPU resource when carrying out the display of QT graphical interfaces, other processing are for CPU core
Occupation rate it is not high, i.e. CPU can be easily accomplished the task that application program is specified.
The application is realized and is based on by the research to the data processing of software implementation radar signal and parallel processing technique
CPU+GPU software implementation radar signal data processor.Using the commercial shelf product such as ADC, CPU, GPU, based on open
Computer configuation builds the platform of Radar Signal Processing and data processing.Complete quantization to target echo signal, signal transacting
And data processing, and record in real time and the real-time display to result are carried out to raw radar data, so as to provide one
Open, reusable, high performance live signal and data processor.By being carried out to system architecture improvement and digital back-end
Software implementation is defined so that the type radar system possesses the feature of software implementation radar.
Signal data processor possesses open computer architecture compared to traditional signal-data processing system, more flexible
Restructural characteristic and stronger disposal ability.The characteristics of its is main has：
(1) system hardware is using the product of commercial shelf, therefore hardware module possesses and have standardization, easily expand and can weigh
The features such as structure；(2) it can be can be reconfigured by the modification to application layer software module in system, system, so as to meet it
The demand of his radar system；(3) all processing tasks in radar system are all realized by software；(4) system has
More powerful parallel processing capability, can complete the processing of the multi-signal in normal radar.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.
Claims (10)
1. a kind of software implementation radar signal data handling system, it is characterised in that including hardware layer, system layer, intermediate layer and should
With layer；
The intermediate layer is used to provide generic service for application layer, including data receiver middleware, data transfer middleware, real-time
Storage Middleware Applying, signal transacting middleware, data processing centre part and radar terminal show middleware；
The application layer builds signal-data processing framework by intermediate layer to be used to calculate current radar data and signal, including is penetrated
The reception of frequency front end data, real-time storage, signal transacting, data processing and terminal are shown.
2. a kind of software implementation radar signal data handling system as claimed in claim 1, it is characterised in that the hardware layer bag
Include signal transacting carrying platform, data processing carrying platform and radar terminal display device；
The signal transacting carrying platform, is handled in real time for carrying out intensive calculating and carrying out radar；
The data processing carrying platform, for carrying out radar data processing task；
The radar terminal display device, for finally showing various radar return data.
3. a kind of software implementation radar signal data handling system as claimed in claim 1, it is characterised in that the data processing
Middleware uses the concurrent_bounder_queue in Intel tbb.
4. a kind of software implementation radar signal data handling system as claimed in claim 1, it is characterised in that：
The data receiver middleware, receives different types of data；
The data transfer middleware, transmits data；
The radar data of the real-time storage storage includes time point, radar control word and the radar data information of storage；
The signal transacting middleware includes pulse compression, pulse accumulation, clutter processing middleware；
Part is that the target component information got to signal processing module carries out the pretreatment of point mark, flight path in the middle of the data processing
Formation is handled；
The terminal shows that middleware is shown to the data received.
5. a kind of software implementation radar signal data handling system as claimed in claim 1, it is characterised in that：
The radio-frequency front-end data receiver thread is initialized and binding CPU to receiving module initialization, data transfer middleware
Core；
The data storage threads store front end signal together with system time parameter；
The signal transacting thread obtains the data of front end thread transmission, obtains radar return information sum according to this and storage target
The address of data buffer zone, judges whether the radar control word in radar return information changes, if changed, to signal
The part middleware of processing carries out Reparametrization；
The data processing threads, obtain target data and radar information, judge whether radar control word changes, control word changes
Become, then the interface class to data processing is re-created, if control word does not change, obtains final data；
The terminal shows thread, the final data of display data processing thread transmission.
6. a kind of software implementation radar signal data processing method, it is characterised in that comprise the following steps：
Step 1：Obtain radio-frequency front-end echo data
By radio-frequency front-end data receiver thread obtain radar radio-frequency front-end echo data, then by data by data transfer in the middle of
Part sends signal transacting thread to；
Step 2：Process signal
Step 2.1：Signal transacting middleware is initialized by signal transacting thread, and obtains data transfer middleware biography
Defeated radio-frequency front-end echo data and according to radio-frequency front-end data setting signal processing parameter, and radio-frequency front-end data are called to number
The radar return information sum of part transmission in the middle of data processing is obtained again according to this according to processing middleware and storage target data is buffered
The address in area；
Step 2.2：Judge whether the radar control word in radar return information changes, if changed, in the middle of signal transacting
Part carries out parameter and resets and calculate target data and transmit to part in the middle of data processing, if do not changed, to radar
Echo information and target data and the address computation of storage target data buffering area obtain target data and transmitted to data processing
Middleware；
Step 3：Processing data
The target data of data processing centre part transmission is obtained by data processing threads and judges whether radar control word changes,
If changed, the interface class to data processing re-create reprocessing and transmit result to radar terminal showing
Middleware is shown, if do not changed, row data processing and by result transmit to radar terminal show middleware show；
Step 4：Display
Show that thread is initialized to interface by terminal and obtain the signal-data processing of other threads transmission again and will handle
As a result shown.
7. a kind of software implementation radar signal data processing method as claimed in claim 6, it is characterised in that also including step：
Obtain the data of data transfer middleware transmission by data storage threads and obtain current time stamp and store together.
8. a kind of software implementation radar signal data processing method as claimed in claim 6, it is characterised in that the step 2 has
Body is：
Step 2.1.1, enabling signal processing thread simultaneously calls InitRadarDSPSys interfaces, and signal transacting middleware is carried out
Initialization, then the Start signals of waiting signal data processing, after the signal is received, are called in the middle of front end data transmission
The Dequeue interfaces of part, obtain the data transmitted from radio-frequency front-end data receiver thread；Then call
The parameter of SetSysParamter interfaces setting signal processing；
Step 2.1.2, calls transmission objectives data to data to handle GetOneBuff interfaces and the acquisition of thread middleware respectively
The Dequeue interfaces of digital echo middleware, obtain radar return information sum according to this and storage target data buffering area
Address；
Step 2.2.1, judges whether the radar control word in radar return information changes, if changed, to signal
The part middleware of processing carries out Reparametrization：ResetParameter interfaces are called, all parameters are resetted, so
Just call SetSysParamter interfaces to reset signal transacting middleware parameter afterwards, do not change according still further to radar control word
When order carry out signal transacting, call SetSampleSignal interfaces to obtain digitized radar echo data and parameter first,
Then DoProcess interfaces are called to carry out signal transacting to data, by calling GetSignalProcOut interfaces by data
The data obtained after reason are from GPU is transferred to internal memory, and then transmission objectives data to data handles the EnQueue of thread middleware
Interface stores buffer zone address into queue, finally calls thread-data to transmit the RefreshBuff interfaces of middleware；Such as
Fruit does not change, then the address computation to radar return information and target data and storage target data buffering area obtains target data
And transmit to part in the middle of data processing；
Step 2.2.2, shows thread by the Get middlewares in call signal processing in Show interfaces, terminal and corresponds to therewith
Signal groove and show the data image after signal transacting middleware processes in real time, circulate aforesaid operations, until thread is exited.
9. a kind of software implementation radar signal data processing method as claimed in claim 6, it is characterised in that the step 3 has
Body is：Step 3.1, log-on data handles thread and the interface class to data processing is created and initialized, and obtains Start letters
After number, the DeQueue interfaces of transmission objectives data middleware obtain target data and radar information again after call signal processing；Step
Rapid 3.2, judge whether radar control word changes, if control word changes, the interface class to data processing is re-created,
Control word does not change, then calls read_new interfaces, reads target data, then carry out at data by data_treat interfaces
Reason, after data duplication is come out by GetTrackInfo, recycle the signal groove interface that shows of PShow interface interchange terminals to enter
The display of row final data；Step 3.3, it is intended to call data transfer middleware in processing procedure in the step 3.2
RefreshBuff interfaces, are handled the address of buffering area.
10. a kind of software implementation radar signal data processing method as claimed in claim 6, it is characterised in that step 4 is specific
For：Step 4.1, terminal shows that thread is initialized to interface；Step 4.2, terminal is shown by thread by connect functions
In signal receiver function and groove functional link get up, other threads set up in application layer；Step 4.3, Start letters are got
Number, signal-data processing is proceeded by, while the result to signal-data processing is shown.
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Cited By (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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