CN108717187A - Based on multinuclear digital signal processor through-wall radar motion target tracking imaging method - Google Patents
Based on multinuclear digital signal processor through-wall radar motion target tracking imaging method Download PDFInfo
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- CN108717187A CN108717187A CN201810501899.3A CN201810501899A CN108717187A CN 108717187 A CN108717187 A CN 108717187A CN 201810501899 A CN201810501899 A CN 201810501899A CN 108717187 A CN108717187 A CN 108717187A
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Classifications
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/66—Radar-tracking systems; Analogous systems
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
- G01S13/888—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons through wall detection
Abstract
One kind being based on multinuclear digital signal processor through-wall radar motion target tracking imaging method, is related to digital signal processing technique field, solves the problems, such as it is to meet ULTRA-WIDEBAND RADAR imaging requirement of real-time, is as follows：（1）Information data acquisition is carried out to mobile target and inputs the ends PC；（2）It carries out data encapsulation by information data and reaches multinuclear digital signal processor to handle；（3）8 parts are splitted data into, common storage area is stored in；（4）Using Core0 as main core, the initialization of control system notifies other to execute respective task from core；（5）Using Core1-7 as from core, the data of common storage area are accessed；（6）Each core reads information data and carries out time-delay calculation, and result is sent to original memory block；（7）The superposition that main core Core0 carries out last algorithm arranges, and former road returns to the ends PC.Operation efficiency of the present invention is high, meets the requirement of real-time of motion target tracking imaging.
Description
Technical field
The present invention relates to digital signal processing technique fields, and in particular to one kind is through walls based on multinuclear digital signal processor
Radar Moving Target tracks imaging method.
Background technology
With the rapid development of science and technology life, according to military affairs, national body property safety and some is safeguarded commercially to want
It asks, radar has become major research institution as a kind of high-end technology that can be detected target, track imaging and business is public
Take charge of the important topic to be studied of falling over each other.When attacking face to face geological prospecting, Post disaster relief, terroristic organization, ultra wide band
（UWB）Through-wall detection technology by its distinctive strong penetrability, high distance resolution, clearly imaging results the features such as,
It has a wide range of applications in proximity detection scene.
It with Digital Signal Processing continues to develop, target identification realizes ULTRA-WIDEBAND RADAR imaging technique with positioning
Propose the requirement of high-resolution, hard real-time so that ULTRA-WIDEBAND RADAR imaging system can handle mass data, complete complexity
Imaging algorithm, have higher data throughput capabilities.Traditional Radar Signal Processing System platform uses at monokaryon
Device is managed, device structure is complicated, and function is simple, it is difficult to meet the requirement of the live signal of high speed processing.Multinuclear is in this case
It comes into being, multinuclear compares monokaryon, possesses faster process performance, occupies smaller PCB surface product, and lower power consumption becomes
Outstanding person in digital signal processor in recent years.
The characteristics of through-wall imaging radar is that signal complexity is high, data volume is huge, processing real-time is relatively difficult to achieve.Just at present
For, realization technology mainly has field programmable gate array（Field programmable gate array, referred to as
FPGA）Technology, profession ASIC (application specific integrated circuits) chip technology technology two are big
Class.FPGA is commonly used to realize digital circuit blocks, possesses abundant logical resource, I/O resources, programmed suitable for block diagram formula,
Occasion in the case of task relatively fixation or repetition, mainly utilizes the advantage of itself to be used for bearing under the scene of signal processing
Interface Controller is blamed, the algorithm of lower complexity is completed, is generally commonly used to the collecting part of radar signal.Professional asic chip skill
The encapsulation that art possesses higher speed and area as small as possible and is entirely satisfactory, but it is flexibly poor, design cost is high
It is expensive.
Invention content
In view of the deficiencies of the prior art, problem solved by the invention is to meet ULTRA-WIDEBAND RADAR imaging requirement of real-time.
It is worn based on multinuclear digital signal processor in order to solve the above technical problems, the technical solution adopted by the present invention is one kind
Wall Radar Moving Target tracks imaging method, is as follows：
（1）The ends information data acquisition input PC are carried out to mobile target after wall using radar signal collecting device；
（2）The information data of acquired mobile target is carried out data encapsulation by the ends PC at timed intervals, pass sequentially through gigabit with
Too net is transmitted to multinuclear digital signal processor and is handled, it is preferable that the time interval is 0.01 second；
（3）The data received are divided into 8 parts by multinuclear digital signal processor, are stored in common storage area；
（4）Using Core0 as main core, the initialization of control system notifies other are executed from core respectively to appoint by IPC intercore communications
Business；
（5）The data of common storage area are accessed, according to storage after receiving main core Core0 orders using Core1-7 as from core
Read the initial data respectively needed in address；
（6）Each core reads corresponding channel information data, carries out time-delay calculation according to radar BP imaging algorithms, calculates and complete
Acquired results are sent to original memory block afterwards；
（7）The superposition that the result of each core is carried out last algorithm by main core Core0 arranges, and result is passed through gigabit Ethernet
Former road returns to the ends PC.
Step（2）, in step (7), the gigabit Ethernet utilizes NDK（Network Development Kit）Network
Development kit creates the network port, IP bindings and task process with ICP/IP protocol by bottom hardware Driver Design, adopts
It is designed with the web application of user terminal, by TCP networks, data to be treated is sent to multinuclear according to procotol
The server of digital signal processor, multinuclear digital signal processor carry out operation after receiving data, will fortune after operation
It calculates as a result, be then forwarded to client, completes the interaction between data；
The bottom hardware driver carries out mutual exclusion using hardware semaphore, and corresponding driving is used according to the demand of oneself
Function carries out parameter configuration modification；
The ICP/IP protocol uses Transmission Control Protocol；
The web application of the user terminal uses socket exploitation server, including following procedure；
1）Socket server objects are created, socket is monitored；
2）Connection is established, and client is waited for initiate active connection request；
3）Data are transmitted and received, server end is then responsible for monitoring connection request, and request starts transmission data after passing through；
4）File dialogue is closed, is disconnected.
In step (4), using multinuclear digital signal processor parallel architecture the characteristics of, by the data of calculating according to channel
Number divides, and calculates the information data in each channel, finally does a superposition；
Step（6）In, multinuclear digital signal processor selects master-slave topology structure according to the distribution of task, is interrupted and is made using IPC
For communication mode, Core0 carries out data exchange as main nuclear unit and the external world, and is led to from core progress data by internuclear interruption
Letter and state synchronized execute task by the down trigger of main core, algorithm calculating task are carried out from core；
Beneficial effects of the present invention：The data transmission between the ends PC and multinuclear digital signal processor is realized, according to principal and subordinate's mould
Type carries out mission planning to radar BP imaging algorithms, calls multinuclear to synchronize and executes calculating task, improve operation efficiency, realizes fortune
The real-time of tracking of maneuvering target imaging.
Description of the drawings
Fig. 1 is the method for the present invention flow chart；
Fig. 2 is the flow diagram of Ethernet programming of the present invention；
Fig. 3 is the flow chart of radar BP imaging algorithms in the present invention；
Fig. 4 is the master-slave model of parallel architecture of the present invention design.
Specific implementation mode
The specific implementation mode of the present invention is further described with reference to the accompanying drawings and examples, but is not to this hair
Bright restriction.
Embodiment：The TMS320C6678 multinuclears digital signal processor of TI companies is selected to illustrate.
In the present embodiment, as shown in Figure 1, the data volume in each channel is divided into a basic task data volume,
The data volume of calculating can be divided intonA basic task,nQuantity depending on radar acquisition channel.
Fig. 1 shows that one kind being based on multinuclear digital signal processor through-wall radar motion target tracking imaging method, specifically
Steps are as follows：
（1）The ends information data acquisition input PC are carried out to mobile target after wall using radar signal collecting device；
（2）The information data of acquired mobile target is carried out data encapsulation by the ends PC at timed intervals, pass sequentially through gigabit with
Too net is transmitted to multinuclear digital signal processor and is handled, it is preferable that the time interval is 0.01 second；
（3）The data received are divided into 8 parts by multinuclear digital signal processor, are stored in common storage area；
（4）Using Core0 as main core, the initialization of control system notifies other are executed from core respectively to appoint by IPC intercore communications
Business；
（5）The data of common storage area are accessed, according to storage after receiving main core Core0 orders using Core1-7 as from core
Read the initial data respectively needed in address；
（6）Each core reads corresponding channel information data, carries out time-delay calculation according to radar BP imaging algorithms, calculates and complete
Acquired results are sent to original memory block afterwards；
（7）The superposition that the result of each core is carried out last algorithm by main core Core0 arranges, and result is passed through gigabit Ethernet
Former road returns to the ends PC.
Step（2）, in step (7), the gigabit Ethernet utilizes NDK（Network Development Kit）Network
Development kit creates the network port, IP bindings and task process by bottom hardware Driver Design, with ICP/IP protocol,
It is designed using the web application of user terminal, by TCP networks, is sent to data to be treated according to procotol more
The server of check figure word signal processor, multinuclear digital signal processor carry out operation after receiving data, will after operation
Operation result is then forwarded to client, completes the interaction between data；
The bottom hardware driver carries out mutual exclusion using hardware semaphore, and corresponding driving is used according to the demand of oneself
Function carries out parameter configuration modification；
The ICP/IP protocol uses Transmission Control Protocol；
The web application of the user terminal uses socket exploitation server, including following procedure, such as Fig. 2 institutes
Show；
1）Socket server objects are created, socket is monitored；
2）Connection is established, and client is waited for initiate active connection request；
3）Data are transmitted and received, server end is then responsible for monitoring connection request, and request starts transmission data after passing through；
4）File dialogue is closed, is disconnected.
In the present embodiment, static IP is selected（StaticIP）Mode programming specifies the IP address of TMS320C6678.Multinuclear
The IP address of digital signal processor：192.168.2.100 the IP address at the ends PC：192.168.2.102.C6678 network interfaces and PC
It is to be connected by way of 100Mbps network interface card patterns between end, the IP multiport handshake agreements of the ends PC and C6678 reach rear network
Path setting starts transmission data.Since initialization program needs to complete on core 0, core 0 is elected to be realization network communication
Control core, core 0 and the data exchange of other cores are completed on common storage area.
In step (4), as shown in figure 3, using multinuclear digital signal processor parallel architecture the characteristics of, by calculating
Data are divided according to port number, calculate the information data in each channel, finally do a superposition；
In the present embodiment, the parallel architecture of the multinuclear digital signal processor uses master-slave model, as shown in figure 4, main core
Core 0 is main control core, is responsible for the initialization of system, carries out Preliminary operation to data, core 1-7 receives the finger of core 0 as subordinate core
It enables and carries out related operation, and send acquired results to core 0 and do last Data Integration.
Step（6）In, multinuclear digital signal processor selects master-slave topology structure according to the distribution of task, using in IPC
Break as communication mode, Core0 carries out data exchange as main nuclear unit with extraneous, and is interrupted and from core into line number by internuclear
It is synchronized according to communication and status, task is executed by the down trigger of main core, algorithm calculating task is carried out from core；
In the present embodiment, in target movement, movement objective orbit is tracked.The time started using moving target is base
Standard is imaged target with 0.2 second interval, with the frame per second of 6 frame per second respectively at the 0th second of target movement, 0.2 second, 0.4
Second, 0.6 second, 0.8 second, 1 second at the time of, is imaged target.Every frame image data is sequentially input as a file,
It is handled successively in multinuclear digital signal processor, gained handling result, which is carried out last superposition, can be obtained by movement
The movement locus of target, to judge target direction of motion and distance.
Detailed description is made that embodiments of the present invention above in association with attached drawing, but the present invention be not limited to it is described
Embodiment.To those skilled in the art, without departing from the principles and spirit of the present invention, these are implemented
Mode carries out various change, modification, replacement and modification and still falls in protection scope of the present invention.
Claims (8)
1. one kind being based on multinuclear digital signal processor through-wall radar motion target tracking imaging method, which is characterized in that specific
Steps are as follows：
（1）The ends information data acquisition input PC are carried out to mobile target after wall using radar signal collecting device；
（2）The information data of acquired mobile target is carried out data encapsulation by the ends PC at timed intervals, pass sequentially through gigabit with
Too net is transmitted to multinuclear digital signal processor and is handled, it is preferable that the time interval is 0.01 second；
（3）The data received are divided into 8 parts by multinuclear digital signal processor, are stored in common storage area；
（4）Using Core0 as main core, the initialization of control system notifies other are executed from core respectively to appoint by IPC intercore communications
Business；
（5）The data of common storage area are accessed, according to storage after receiving main core Core0 orders using Core1-7 as from core
Read the initial data respectively needed in address；
（6）Each core reads corresponding channel information data, carries out time-delay calculation according to radar BP imaging algorithms, calculates and complete
Acquired results are sent to original memory block afterwards；
（7）The superposition that the result of each core is carried out last algorithm by main core Core0 arranges, and result is passed through gigabit Ethernet
Former road returns to the ends PC.
2. according to claim 1 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging method,
It is characterized in that, step（2）In, the time interval is 0.01 second.
3. according to claim 1 or 2 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging side
Method, which is characterized in that step（2）, in step (7), the gigabit Ethernet utilizes NDK（Network Development
Kit）Network development external member creates the network port by bottom hardware Driver Design with ICP/IP protocol, IP is bound and is appointed
Business process is designed using the web application of user terminal, by TCP networks, according to procotol by data to be treated
It is sent to the server of multinuclear digital signal processor, multinuclear digital signal processor carries out operation, operation after receiving data
After by operation result, be then forwarded to client, complete the interaction between data.
4. according to claim 3 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging method,
It is characterized in that, the bottom hardware driver carries out mutual exclusion using hardware semaphore, phase is used according to the demand of oneself
The driving function answered carries out parameter configuration modification.
5. according to claim 3 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging method,
It is characterized in that, the ICP/IP protocol uses Transmission Control Protocol.
6. according to claim 3 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging method,
It is characterized in that, the web application of the user terminal uses socket exploitation server, including following procedure；
1）Socket server objects are created, socket is monitored；
2）Connection is established, and client is waited for initiate active connection request；
3）Data are transmitted and received, server end is then responsible for monitoring connection request, and request starts transmission data after passing through；
4）File dialogue is closed, is disconnected.
7. according to claim 1 or 2 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging side
Method, which is characterized in that in step (4), using multinuclear digital signal processor parallel architecture the characteristics of, the data of calculating are pressed
It is divided according to port number, calculates the information data in each channel, finally do a superposition.
8. according to claim 1 or 2 be based on multinuclear digital signal processor through-wall radar motion target tracking imaging side
Method, which is characterized in that step（6）In, multinuclear digital signal processor selects master-slave topology structure according to the distribution of task, utilizes
IPC, which is interrupted, is used as communication mode, and Core0 carries out data exchange as main nuclear unit with extraneous, and by internuclear interruption with from core
Data communication and status synchronization is carried out, task is executed by the down trigger of main core, algorithm calculating task is carried out from core.
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| CN109976893A (en) * | 2019-03-29 | 2019-07-05 | 北京润科通用技术有限公司 | The sequential control method and device of real time operating system |
| CN111221770A (en) * | 2019-12-31 | 2020-06-02 | 中国船舶重工集团公司第七一七研究所 | Kernel correlation filtering target tracking method and system |
| CN111327356A (en) * | 2020-02-26 | 2020-06-23 | 航天恒星科技有限公司 | Demodulation device |
| CN111400069A (en) * | 2020-03-23 | 2020-07-10 | 北京经纬恒润科技有限公司 | Method, device and system for realizing KCF tracking algorithm |
| CN111967475A (en) * | 2020-06-28 | 2020-11-20 | 北京大学 | Software hardware method based on remote sensing image SIFT processing |
| CN114826849A (en) * | 2022-03-19 | 2022-07-29 | 西安电子科技大学 | DSP local reconstruction method and system for communication signal identification processing |
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| CN111327356A (en) * | 2020-02-26 | 2020-06-23 | 航天恒星科技有限公司 | Demodulation device |
| CN111400069A (en) * | 2020-03-23 | 2020-07-10 | 北京经纬恒润科技有限公司 | Method, device and system for realizing KCF tracking algorithm |
| CN111400069B (en) * | 2020-03-23 | 2024-01-26 | 北京经纬恒润科技股份有限公司 | Method, device and system for realizing KCF tracking algorithm |
| CN111967475A (en) * | 2020-06-28 | 2020-11-20 | 北京大学 | Software hardware method based on remote sensing image SIFT processing |
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Application publication date: 20181030 |
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