CN109991479A - The sudden and violent real-time detection apparatus, system and method for the Rapid Radio of multibeam receiver - Google Patents
The sudden and violent real-time detection apparatus, system and method for the Rapid Radio of multibeam receiver Download PDFInfo
- Publication number
- CN109991479A CN109991479A CN201910225392.4A CN201910225392A CN109991479A CN 109991479 A CN109991479 A CN 109991479A CN 201910225392 A CN201910225392 A CN 201910225392A CN 109991479 A CN109991479 A CN 109991479A
- Authority
- CN
- China
- Prior art keywords
- data
- cruelly
- rapid radio
- radio
- rapid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention provides a kind of sudden and violent real-time detection apparatus, system and method for the Rapid Radio of multibeam receiver, device includes: signal processing unit, high-speed data crosspoint, N number of calculate node, head node and storage unit；Signal processing unit carries out signal acquisition and frequency-domain transform to the road N beam signal, and the output road N Rapid Radio observes data cruelly, wherein N > 1；N number of calculate node is observed data to the road the N Rapid Radio after exchanging by high-speed data crosspoint respectively cruelly and is handled in real time, extracts the cruelly candidate body of Rapid Radio respectively and stores it respectively；Head node carries out subsequent signal synthesis according to the data that the temporal information stored in calculate node converges N number of calculate node same time；Differentiate that the cruelly candidate body of Rapid Radio carries out the cruelly candidate body detection of Rapid Radio and classification.The present invention effectively increases detection accuracy rate and efficiency.
Description
Technical field
The present invention relates to a kind of sudden and violent real-time detection apparatus, system and methods of the Rapid Radio of multibeam receiver, are applicable in
In sudden and violent accurate, the efficient, real-time detection of Rapid Radio and related science research.
Background technique
Before more than ten years, astronomer has received a kind of wireless pulse that energy is high suddenly, and the duration is very
It is of short duration, only several milliseconds.Astronomer is referred to as Rapid Radio cruelly (Fast RadioBurst, abbreviation FRB), later and more
It is secondary to receive.In the FRB signal being received, the electron column density anomaly of referred to as chromatic dispersion measurement (DM) is high, which results in
Conjecture of such signal originating from cosmic distance and/or extreme environment.However, it is this mystery signal source always hang and not
Solution.
In order to be observed research to this phenomenon, domestic and international many observatories all establish FRB detection system one after another.Mesh
Before be typically based on simple beam receiver and built, but since the visual field of simple beam is small, also can only to the identification of interference signal
Electromagnetic environment and limited removing method are relied on, not only detection efficient is limited, and recognition accuracy is relatively low.
It needs further to research and develop, is suitable for sudden and violent accurate, the efficient, real-time detection of Rapid Radio and related science research to meet
Needs.
Summary of the invention
(1) technical problems to be solved
The present invention provides one kind to be based on the sudden and violent real-time detection apparatus, system and method for multibeam receiver Rapid Radio, with
At least partly solve technical problem set forth above.
(2) technical solution
According to an aspect of the invention, there is provided a kind of based on the sudden and violent real-time detection dress of multibeam receiver Rapid Radio
It sets, comprising: signal processing unit carries out signal acquisition and frequency-domain transform to the road N beam signal, and the output road N Rapid Radio is seen cruelly
Measured data, wherein N > 1；The signal processing unit includes: N number of data acquisition and frequency-domain transform subelement；High-speed data is handed over
Unit is changed, the road the N Rapid Radio for receiving the signal processing unit output respectively observes data cruelly, after carrying out high-speed data exchange
Output；N number of calculate node observes data to the road the N Rapid Radio after exchanging by the high-speed data crosspoint respectively cruelly
It is handled in real time, extract the cruelly candidate body of Rapid Radio that every road Rapid Radio is observed in data cruelly respectively and is deposited it respectively
Storage；Head node carries out simultaneously according to the data that the temporal information stored in the calculate node converges N number of calculate node same time
It signals to synthesize；Differentiate that the cruelly candidate body of Rapid Radio carries out the cruelly candidate body detection of Rapid Radio and classification；Rapid Radio is waited cruelly
Body is selected link to Web Publishing unit at figure and issued；Storage unit, the head node pass through modification Redis data
Library key assignments triggers the storage unit and carries out data preservation；The storage unit reads the Redis data of the head node output
Key assignments judges whether it is the cruelly candidate body of Rapid Radio, is that the cruelly candidate body of Rapid Radio is then read from the corresponding calculate node
Access is not that the cruelly candidate body of Rapid Radio is then deleted according to being written in fast disc array.
In some embodiments disclosed by the invention, each calculate node includes: high speed packet reception and format
Conversion module, cache module, single FRB signal search module；The high speed packet receive with format converting module receive by
The Rapid Radio of the high-speed data crosspoint output observes data cruelly, and observes received Rapid Radio data progress cruelly
Format conversion；The cache module, which is temporarily stored, to be received by the high speed packet with after format converting module, and format is completed
The Rapid Radio of conversion observes data cruelly, as storage file；The single FRB signal search module, to the cache module
In Rapid Radio observe data cruelly and calculated in real time, observe in data that extract Rapid Radio cruelly candidate cruelly from Rapid Radio
Body.
In some embodiments of the invention, the single FRB signal search module includes: to read from the cache module
The data of single beam signal are taken, and by data from CPU memory copying to GPU thread；Rapid Radio is seen cruelly in GPU thread
Measured data is calculated in real time, is observed in data cruelly from Rapid Radio and is extracted the cruelly candidate body of Rapid Radio；It will extract again
The cruelly candidate body of Rapid Radio is saved from GPU memory copying to CPU memory.
In some embodiments of the invention, the head node includes: subsequent signal synthesis module, candidate body detection and divides
Generic module, real-time drawing function and trigger module；The subsequent signal synthesis module, according in the cache module storage file when
Between all calculate nodes of converging information the same time the cruelly candidate volume data of Rapid Radio；Candidate's body detects and divides
Generic module is differentiated and is classified to the cruelly candidate volume data of multiple Rapid Radios of convergence；The real-time drawing function and triggering
Module link to Web Publishing unit at figure and issued to the cruelly candidate body of Rapid Radio, while passing through modification Redis
Database key assignments triggers storage unit and carries out data preservation.
In some embodiments of the invention, in the candidate body detection and categorization module, according to the sudden and violent signal of Rapid Radio
All the case where being likely to occur, make an effective mask list, including N bit binary number in multiple wave beams, will receive
The signal of each wave beam is identified using N bit binary number 0 and 1, identification code is obtained, if detecting one in wave beam
The similar sudden and violent signal of Rapid Radio, is marked and is set as 1, is otherwise labeled as 0；In identification code 1 number is judged, if
1 number is not more than 4 in identification code, then the identification code and effective mask list is carried out same or operation；As operation result is
1, i.e., it is identical, then the cruelly candidate body mark of a Rapid Radio is added, and terminate this identification code operation, such as and in effective mask list
All mask operation results are 0, then add a false candidate body mark.
In some embodiments of the invention, the data acquisition and frequency-domain transform subelement include: sampling module, multiphase
Filter, plural FFT transform module, relevant calculation module, integration module and network encapsulation and sending module；The sampling module
Beam signal all the way is received, digitized sampling is carried out, obtains sampled data；The multiphase filter carries out the sampled data
Frequency channel divides, and obtains multi-channel sampling data；The plural number FFT transform module carries out frequency to the multi-channel sampling data
Domain transformation, obtains multichannel frequency domain data；The relevant calculation module carries out related operation to the multichannel frequency domain data, obtains
Data are observed cruelly to Rapid Radio；The integration module according to temporal resolution require Rapid Radio is observed cruelly data carry out it is tired
Add, to reduce data volume；The network encapsulation and sending module will treated that Rapid Radio is seen cruelly by the integration module
Measured data is packaged, and is sent to the high-speed data crosspoint by network.
In some embodiments of the invention, the GPU thread includes: that data copy into submodule, and Rapid Radio is seen cruelly
Measured data is from CPU memory copying to GPU memory；RFI eliminates submodule, and the Rapid Radio in the GPU memory is observed number cruelly
Interference elimination is carried out according in frequency domain；De-dispersion submodule receives after carrying out interference elimination by RFI elimination submodule
Rapid Radio observes data cruelly, carries out De-dispersion calculating；Candidate body searches submodule, in the fast of De-dispersion submodule output
The cruelly candidate body of Rapid Radio is extracted in fast radio storm observation data；Data copy out submodule, and the candidate body is searched submodule
The cruelly candidate body of the Rapid Radio that block extracts is by GPU memory copying into CPU memory.
According to an aspect of the present invention, a kind of sudden and violent real-time detection system of Rapid Radio of multibeam receiver is additionally provided
System, wherein the sudden and violent real-time detection device of Rapid Radio including multibeam receiver described in claim 1 and connect with multi-beam
The connected radio telescope of the sudden and violent real-time detection device of the Rapid Radio of receipts machine.
According to an aspect of the present invention, a kind of sudden and violent real-time detection side of Rapid Radio of multibeam receiver is additionally provided
Method, comprising: signal acquisition and frequency-domain transform are carried out to the road N beam signal, the output road N Rapid Radio observes data cruelly, carries out high
Each calculate node is distributed to after fast data exchange；Data are observed cruelly to the road N Rapid Radio respectively to be handled in real time, are mentioned respectively
It takes out the cruelly candidate body of Rapid Radio that every road Rapid Radio is observed in data cruelly and stores it respectively；According to temporal information, converge
The poly- road N Rapid Radio observes data of the cruelly candidate body of the Rapid Radio in data in the same time cruelly, carries out subsequent signal synthesis；
Differentiate that the cruelly candidate body of Rapid Radio carries out the cruelly candidate body detection of Rapid Radio and classification, to the cruelly candidate body of Rapid Radio carry out at
Figure, links to Web Publishing unit and is issued, while being triggered by modifying Redis database key assignments.
(3) beneficial effect
It can be seen from the above technical proposal that the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver of the present invention, being
System at least has the advantages that one of them or in which a part with method:
Multibeam receiver generates multiple wave beams alignment skies in primary observation, available multiple pixels, thus
Greatly improve the observed efficiency of radio telescope；Using the acquisition of N number of data and frequency-domain transform subelement and N number of calculate node pair
N number of beam signal carries out Signal acquiring and processing, keeps data shared in each intermodule by buffer circle technology, to realize
Multi-task parallel processing, each wave beam can real-time online operations；Head node is read by network mapping from each calculate node
And search result is collected according to the time, the vacation of radio frequency interference generation is then eliminated using the sudden and violent recognition strategy of multi-beam Rapid Radio
Signal improves detection accuracy rate.
Detailed description of the invention
Fig. 1 is the schematic diagram of the sudden and violent real-time detection device of Rapid Radio of multibeam receiver of the embodiment of the present invention.
Fig. 2 is that Rapid Radio searches the schematic diagram of process cruelly in single FRB signal search module in Fig. 1.
Fig. 3 is multibeam receiver beam permutation schematic diagram.
Fig. 4 is observed result schematic diagram processed by the invention.
Specific embodiment
The present invention provides a kind of sudden and violent real-time detection apparatus, system and method for the Rapid Radio of multibeam receiver, dresses
Set includes: signal processing unit, high-speed data crosspoint, N number of calculate node, head node and storage unit；Signal processing list
Member carries out signal acquisition and frequency-domain transform to the road N beam signal, and the output road N Rapid Radio observes data cruelly, wherein N > 1；It is N number of
Calculate node is observed data to the road the N Rapid Radio after exchanging by high-speed data crosspoint respectively cruelly and is handled in real time,
The cruelly candidate body of Rapid Radio is extracted respectively and stores it respectively；Head node converges according to the temporal information stored in calculate node
The data for gathering N number of calculate node same time carry out subsequent signal synthesis；Differentiate that the cruelly candidate body of Rapid Radio carries out Rapid Radio
Sudden and violent candidate's body detection and classification.The present invention effectively increases detection accuracy rate and efficiency.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Certain embodiments of the invention will be done referring to appended attached drawing in rear and more comprehensively describe to property, some of but not complete
The embodiment in portion will be shown.In fact, various embodiments of the present invention can be realized in many different forms, and should not be construed
To be limited to this several illustrated embodiment；Relatively, these embodiments are provided so that the present invention meets applicable legal requirement.
In first exemplary embodiment of the invention, the Rapid Radio for providing a kind of multibeam receiver is cruelly real-time
Detection device.Fig. 1 is the schematic diagram of the sudden and violent real-time detection device of Rapid Radio of multibeam receiver of the embodiment of the present invention.Such as Fig. 1
It is shown, the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver of the present invention, comprising: signal processing unit, high-speed data are handed over
Change unit, N number of calculate node, head node and storage unit；Wherein N > 1.Each component units are described in detail below:
Signal processing unit carries out signal acquisition and frequency-domain transform to the road N beam signal, and the output road N Rapid Radio is seen cruelly
Measured data, wherein N > 1.Signal processing unit includes: N number of data acquisition and frequency-domain transform subelement.
Wherein, data acquisition and frequency-domain transform subelement include: sampling module, multiphase filter, plural FFT transform mould
Block, relevant calculation module, integration module and network encapsulation and sending module.Specifically, sampling module receives beam signal all the way,
Digitized sampling is carried out, sampled data is obtained.Multiphase filter carries out frequency channel division to sampled data, obtains multichannel and adopts
Sample data.Plural FFT transform module carries out frequency-domain transform to multi-channel sampling data, obtains multichannel frequency domain data.Correlometer
It calculates module and related operation is carried out to multichannel frequency domain data, obtain Rapid Radio and observe data cruelly.Integration module is according to the time point
Resolution requirement observes cruelly Rapid Radio data and adds up, to reduce data volume.Network encapsulation and sending module will be by products
Treated that Rapid Radio observes data cruelly is packaged for sub-module, and is sent to high-speed data crosspoint by network.
High-speed data crosspoint, the road the N Rapid Radio of receipt signal processing unit output observes data cruelly respectively, carries out
It is exported after high-speed data exchange.
N number of calculate node, respectively to by high-speed data crosspoint exchange after the road N Rapid Radio observe cruelly data into
Row processing in real time extracts the cruelly candidate body of Rapid Radio that every road Rapid Radio is observed in data cruelly respectively and deposits it respectively
Storage.
Specifically, each calculate node includes: that high speed packet receives and format converting module, cache module and single
FRB signal search module.High speed packet reception is exported with format converting module reception by high-speed data crosspoint quick
Radio storm observes data, and observes received Rapid Radio data cruelly and format.Cache module, which temporarily stores, to be passed through
High speed packet is received observes data with the Rapid Radio for after format converting module, completing format conversion cruelly, as storage file.
Single FRB signal search module is observed cruelly the Rapid Radio in cache module data and is calculated in real time, sudden and violent from Rapid Radio
The cruelly candidate body of Rapid Radio is extracted in observation data.Further, it includes 3 that high speed packet, which is received with format converting module,
Thread, respectively network receiving thread, data computational threads and data format thread, and when operation opens up 2 data buffer zones,
Network receiving thread receive the high speed network data packet from ten thousand Broadcom of computer, according to data packet format extract head information and
Valid data, and place data into data output buffer.Data processing threads read data, logarithm from data input buffer area
According to certain processing is carried out, result is then exported to data output buffer.Data format thread is from data output buffer
Data are read, production File header information is arranged according to observation, data are formatted, then output file head and data are to slow
Storing module.In order to avoid three threads execute loss of data caused by time irreversibility, multiple inputs, output buffering can be opened
Area is identified the state of per thread and buffer area, automatically writes unappropriated buffer area.
Also it should be further noted that as shown in Fig. 2, since data rate is high, computationally intensive, here simultaneously using GPU
Row processing is to improve arithmetic speed.It wherein, include: that data copy into submodule, RFI eliminates submodule, De-dispersion in GPU thread
Module, candidate body searches submodule and data copy out submodule.Data copy into submodule and Rapid Radio are observed to data cruelly from CPU
Memory copying is to GPU memory.Since the electromagnetic wave of the radiation such as communication base station, radar, satellite and electronic equipment can be to radio astronomy
Observation frequency range interferes, referred to as radio frequency interference (Radio Frequency Interference, RFI), if not to these
Interference signal is eliminated, and will affect the treatment effect of signal.Therefore, RFI eliminates submodule first to these data in frequency domain
Interference elimination is carried out, then exports again to De-dispersion submodule and carries out De-dispersion calculating.A limited bandwidth B MHz, in
Frequency of heart is time delay t in v GHzDMThe relationship of μ s and DM are as follows:
tDM=8.3 × BDMv-3(μs) (1)
Frequency v is observed at two1And v2Between time delay t2-t1It can be calculated by the following formula:
According to time delay t2-t1The data in each channel in multichannel frequency domain data are carried out in time delay or
In advance.
De-dispersion is exactly to be postponed or mentioned in time according to data of this retardation to each frequency subchannels
Before.For FRB search, DM is unknown, this value in order to obtain, the method that traversal can be used, under each DM value
Data carry out De-dispersion and calculate, and then find out best one group of effect.Such as may be assumed that DM search area Z be 100~
5000cm-3Pc, with 1cm-3Pc is interval to the De-dispersion in each DM value progress frequency channel, is calculated using direct De-dispersion
Method attempts number N in frequency channel number Nv, hits Nt, dispersion measureDMUnder computation complexity are as follows:
Tdirect=O (NtNvNDM) (3)
It then recycles candidate body to search submodule and pulse signal lookup is carried out to the time domain data under each group of dispersion values,
One threshold value is set, is more than that the threshold data is identified as the cruelly candidate body of Rapid Radio by signal-to-noise ratio, which can look in the distance according to radio
The electromagnetic environment of mirror is arranged.Since the pulse width of FRB is unknown, in order to detect the signal that the duration is greater than the sampling time,
One group of matched filter is applied to each time series, by sampled data and wn=2nThe rectangular window of a point (0≤n≤12) is rolled up
Product, and be normalized with evolution, it is wide to obtain optimum pulse by the time width of the rectangle frame of continuous Transformation Matching filter
Degree is optimum pulse width when rectangle frame just includes whole pulse profiles, and matched filter filters out out of band data, is only protected
It stays with interior data, then filtered time series is continued through to other processing of program.
Specifically, head node includes: subsequent signal synthesis module, candidate body detection and categorization module, real-time drawing function and touching
Send out module.
Subsequent signal synthesis module converges all calculate nodes same according to the temporal information of storage file in cache module
The cruelly candidate volume data of the Rapid Radio of one time.
Candidate body detection and categorization module are carried out using the cruelly candidate volume data of multiple Rapid Radios of certain strategy to convergence
Differentiate, using multi-beam RFI (radio frequency interference) recognition methods, removes spurious signal.It is remote small since FRB signal is generally point source
In the wave beam of radio telescope, when main beam is directed toward such source, other wave beams will not detect coherent signal.But this detection
It is non-tracking, i.e., the position that signal occurs is unknown, it is possible to the middle position of adjacent beams is appeared in, in this way, multiple
Wave beam is all likely to be received signal.Generally when receiver designs, when non-adjacent wave beam detects same signal, signal is strong
Degree decaying is substantially undetectable at least in 30dB or more.And the radiation angle of RFI signal may be very big, when radiation energy compared with
Qiang Shi, multiple wave beams can all receive the signal higher than given threshold.The present invention is based on above-mentioned carry out RFI eliminations, are referred to as here
It interferes and eliminates for multi-beam reference effect.
Specifically, as shown in figure 3, making one according to recognition strategy in advance in the arrangement schematic diagram of 19 wave beams
Effective mask list, is listed FRB signal all the case where being likely to occur in multi-beam, this mask can be by 19 binary systems
Number composition, respectively indicates shielding and permission with 0 and 1.Effective mask list it is specific the production method is as follows: (1) allow to own
The case where single wave beam detects signal, mask can be by 000 0,000 0,000 0,000 0001 to 000 0,001 0,000 0000
0000,1 successively moves to highest order from lowest order.(2) the case where allowing all 2 adjacent beams to detect signal, such as wave beam
1,2 or 2,3, corresponding mask is 000 0,000 0,000 0,000 0011 or 000 0,000 0,000 0,000 0110.(3) allow 3
The case where a adjacent beams detect signal, such as wave beam 1,3,4 or 6,7,12, corresponding mask are 000 0,000 0,000 0000
1101 or 000 0,000 1,000 0,110 0000.(4) the case where allowing 4 adjacent beams to detect candidate body, such as wave beam 1,
3,4,9 or 1,6,7,12, corresponding mask are 000 0,000 0,001 0,000 1101 or 000 0,000 1,000 0,110 0001.But
If having detected signal, such as 9 and 11 simultaneously in wave beam relatively far apart, this may be then to be waited due to caused by RFI signal
Selecting body is that the probability of spurious signal increases, and the situation that laterally or longitudinally wave beam reaches 3 or more is determined as false letter here
Number, limit while can receive the maximum numbers of beams of FRB signal as 4 because when wave beam number is more than 4, wave beam across
Degree has just been more than 3.
When processing, sequential binary number 0 and 1 is also used to be identified each beam signal received first,
Referred to as identification code is marked if detecting a similar signal in wave beam and is set as 1, is otherwise labeled as 0.Then
In identification code 1 number is judged, if it exceeds 4, then add a false candidate body mark.If 1 number is not
Greater than 4, then the identification code and effective mask list are subjected to same or operation, it is if operation result is 1, i.e., identical, then add one
The cruelly candidate body mark of a Rapid Radio, and terminate this identification code operation, such as with all mask operation results in effective mask list
It is 0, then adds a false candidate body mark.
For example, identification code are as follows: 000 0,000 0,001 0,000 1101, can and mask matches, then this signal is designated as fastly
Fast radio storm candidate body mark.For another example, identification code are as follows: 000 0,000 0,101 0,000 1101, detect the wave beam number of signal
More than 4, then this data is designated as false candidate body mark.
Storage unit, by modification Redis database key assignments triggering, carries out data preservation by head node；Storage unit is read
The Redis data key values of head node output judge whether it is the cruelly candidate body of Rapid Radio, are read from the calculate node believed
Otherwise access is deleted according to being written in fast disc array.
In first exemplary embodiment of the invention, the Rapid Radio for additionally providing a kind of multibeam receiver is cruelly real
When detection system, wherein the sudden and violent real-time detection device of the Rapid Radio of the multibeam receiver including claim 1 and with more waves
The connected radio telescope of the sudden and violent real-time detection device of the Rapid Radio of beam receiver.Using 19 wave beam L-band reception of double polarization machines
(RF:1050~1450MHz) has carried out observation experiment, using 10 FPGA signal processing platforms to 19 wave beams, 2 polarization totally 38 tunnels
Signal is digitized, in 1~No. 9 FPGA signal-processing board, 2 wave beams of every processing, 2 totally 4 road signals that polarize, and No. 10
FPGA signal-processing board only handles 1 wave beam, 2 polarization totally 2 road signal.Setting sampling clock is 1000MHz, and ADC is worked in
3rd nyquist sampling section: 1000~1500MHz, sampling precision 8bit.FPGA carries out multiphase filtering and 4096 to signal
The plural FFT transform of point, then sends after related, integral, network encapsulation, since FRB signal general persistence is number milli
Second, in order to see the details of FRB signal, tens microseconds will be generally set as the time of integration, in this way, FRB pulse can be by
100 or so sampled points describe.Here it is integrated using 64 microseconds, FPGA signal-processing board is exported to single calculate node
Data rate is 2048Mbit/sec, and the data rate of 19 nodes is 38Gbit/sec.Spectral resolution is 0.12207MHz,
DM search area is 100~5000cm-3Pc, searching pulsewidth can be from 1 millisecond to 128 millisecond, and all parameters all can be according to practical need
It asks and is adjusted.
The signal picture of the single pulse signal of pulsar and FRB are all to transmit from remote space, by interspace Jie seemingly
The influence of matter can generate dispersion, but the DM value of FRB is generally bigger, in order to test the system, has selected DM (dispersion measure)
It is worth biggish pulsar B1900+01, and tracking observation has been carried out to it.The period in the source is 0.7293058 second, and DM value is
245.167cm-3The flow of pc, 1400MHz frequency range is 5.5mJy, pulse width 9.9ms.The parameter setting that FRB is searched are as follows:
Signal-to-noise ratio is greater than 10, can at most detect the wave beam number of signal simultaneously no more than 4, maximum pulse is less than 16ms, per second
Most detectable events are less than 2.
The signal detected is as shown in figure 4, from the bottom up successively are as follows: the waterfall after Waterfall plot, De-dispersion without De-dispersion
Butut and time-domain diagram by each frequency channel after cumulative.It can be seen from the figure that the pulse signal DM value searched in real time is
244.71cm-3Pc, signal-to-noise ratio 1048.41, period are very close with the parameter of B1900+01 at 0.7 second or so.
In first exemplary embodiment of the invention, the Rapid Radio for additionally providing a kind of multibeam receiver is cruelly real
When detection method, comprising: signal acquisition and frequency-domain transform are carried out to the road N beam signal, the output road N Rapid Radio observes number cruelly
According to output is to each calculate node after carrying out high-speed data exchange；Data are observed cruelly to the road N Rapid Radio respectively to be located in real time
Reason extracts the cruelly candidate body of Rapid Radio that every road Rapid Radio is observed in data cruelly respectively and stores it respectively；According to depositing
The temporal information of file is stored up, the convergence road N Rapid Radio observes the cruelly candidate body of the Rapid Radio in data in the number of same time cruelly
According to progress subsequent signal synthesis；Differentiate that the cruelly candidate body of Rapid Radio carries out the cruelly candidate body detection of Rapid Radio and classification, to quick
Radio storm candidate's body link to Web Publishing unit at figure and issued, while passing through modification Redis database key assignments touching
It sends out storage unit and carries out data preservation.
So far, attached drawing is had been combined the embodiment of the present invention is described in detail.It should be noted that in attached drawing or saying
In bright book text, the implementation for not being painted or describing is form known to a person of ordinary skill in the art in technical field, and
It is not described in detail.In addition, the above-mentioned definition to each element and method be not limited in mentioning in embodiment it is various specific
Structure, shape or mode, those of ordinary skill in the art simply can be changed or be replaced to it.
According to above description, those skilled in the art should the Rapid Radio to multibeam receiver of the present invention visit in real time cruelly
Surveying apparatus, system and method has clear understanding.
In conclusion the present invention provides one kind generates multiple wave beams alignments day based on multibeam receiver in primary observation
Sky, available multiple pixels, thus a kind of multibeam receiver for greatly improving the observed efficiency of radio telescope
The sudden and violent real-time detection apparatus, system and method for Rapid Radio, suitable for being widely used in the sudden and violent related science research field of Rapid Radio.
It should also be noted that, the direction term mentioned in embodiment, for example, "upper", "lower", "front", "rear", " left side ",
" right side " etc. is only the direction with reference to attached drawing, the protection scope being not intended to limit the invention.Through attached drawing, identical element by
Same or similar appended drawing reference indicates.When may cause the understanding of the present invention and cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present invention
Content.In addition, in the claims, any reference symbol between parentheses should not be configured to the limit to claim
System.
Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.It is located in front of the element
Word "a" or "an" does not exclude the presence of multiple such elements.
The word of ordinal number such as " first ", " second ", " third " etc. used in specification and claim, with modification
Corresponding element, itself is not meant to that the element has any ordinal number, does not also represent the suitable of a certain element and another element
Sequence in sequence or manufacturing method, the use of those ordinal numbers are only used to enable an element and another tool with certain name
Clear differentiation can be made by having the element of identical name.
In addition, unless specifically described or the step of must sequentially occur, there is no restriction in the above institute for the sequence of above-mentioned steps
Column, and can change or rearrange according to required design.And above-described embodiment can be based on the considerations of design and reliability, that
This mix and match is used using or with other embodiments mix and match, i.e., the technical characteristic in different embodiments can be freely combined
Form more embodiments.
Similarly, it should be understood that in order to simplify the present invention and help to understand one or more of each open aspect,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as a separate embodiment of the present invention.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of sudden and violent real-time detection device of the Rapid Radio of multibeam receiver, comprising:
Signal processing unit carries out signal acquisition and frequency-domain transform to the road N beam signal, and the output road N Rapid Radio observes number cruelly
According to, wherein N > 1；The signal processing unit includes: N number of data acquisition and frequency-domain transform subelement；
High-speed data crosspoint, the road the N Rapid Radio for receiving the signal processing unit output respectively are observed data cruelly, are carried out
It is exported after high-speed data exchange；
N number of calculate node, respectively to by the high-speed data crosspoint exchange after the road N Rapid Radio observe cruelly data into
Row processing in real time extracts the cruelly candidate body of Rapid Radio that every road Rapid Radio is observed in data cruelly respectively and deposits it respectively
Storage；
Head node is carried out according to the data that the temporal information stored in the calculate node converges N number of calculate node same time
Subsequent signal synthesis；Differentiate that the cruelly candidate body of Rapid Radio carries out the cruelly candidate body detection of Rapid Radio and classification；It is sudden and violent to Rapid Radio
Candidate body link to Web Publishing unit at figure and issued；
Storage unit, the head node trigger the storage unit by modification Redis database key assignments and carry out data preservation；Institute
The Redis data key values that storage unit reads the head node output are stated, the cruelly candidate body of Rapid Radio is judged whether it is, is quick
Radio storm candidate body then reads data from the corresponding calculate node and is written in fast disc array, is not Rapid Radio
Sudden and violent candidate's body is then deleted.
2. the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver according to claim 1, wherein each meter
Operator node includes: that high speed packet receives and format converting module, cache module, single FRB signal search module；
The high speed packet, which is received, receives the Rapid Radio exported by the high-speed data crosspoint with format converting module
Sudden and violent observation data, and observe received Rapid Radio data cruelly and format；
The cache module, which is temporarily stored, to be received by the high speed packet and after format converting module, completes format conversion
Rapid Radio observes data cruelly, as storage file；
The single FRB signal search module is observed cruelly the Rapid Radio in the cache module data and is calculated in real time,
It is observed in data cruelly from Rapid Radio and extracts the cruelly candidate body of Rapid Radio.
3. the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver according to claim 2, wherein described single
FRB signal search module includes:
The data of single beam signal are read from the cache module, and by data from CPU memory copying to GPU thread；?
Data are observed Rapid Radio in GPU thread cruelly to be calculated in real time, is observed in data cruelly from Rapid Radio and extracts fast rapid fire
Electric sudden and violent candidate body；The cruelly candidate body of the Rapid Radio extracted is saved from GPU memory copying to CPU memory again.
4. the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver according to claim 1 is wherein, the head node
It include: subsequent signal synthesis module, candidate body detection and categorization module, real-time drawing function and trigger module；
The subsequent signal synthesis module converges all calculating according to the temporal information of storage file in the cache module
Rapid Radio cruelly candidate volume data of the node in the same time；
Candidate's body detection and categorization module are differentiated and are divided to the cruelly candidate volume data of multiple Rapid Radios of convergence
Class；
The real-time drawing function and trigger module carry out linking to the progress of Web Publishing unit at figure to the cruelly candidate body of Rapid Radio
Publication, while storage unit is triggered by modification Redis database key assignments and carries out data preservation.
5. the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver according to claim 4 is wherein, candidate's body
In detection and categorization module, according to the sudden and violent signal of Rapid Radio, all the case where being likely to occur, make one effectively in multiple wave beams
Mask list, including N bit binary number mark the signal for receiving each wave beam using N bit binary number 0 and 1
Know, obtain identification code, if detecting the similar sudden and violent signal of Rapid Radio in wave beam, is marked and be set as 1, otherwise marked
It is denoted as 0；
In identification code 1 number is judged, if 1 number is not more than 4 in identification code, by the identification code and effectively
Mask list carries out same or operation；
It is if operation result is 1, i.e., identical, then the cruelly candidate body mark of a Rapid Radio is added, and terminate this identification code operation, such as
It is 0 with mask operation results all in effective mask list, then adds a false candidate body mark.
6. the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver according to claim 1, wherein the data are adopted
Collection includes: sampling module, multiphase filter, plural FFT transform module, relevant calculation module, integral with frequency-domain transform subelement
Module and network encapsulation and sending module；
The sampling module receives beam signal all the way, carries out digitized sampling, obtains sampled data；
The multiphase filter carries out frequency channel division to the sampled data, obtains multi-channel sampling data；
The plural number FFT transform module carries out frequency-domain transform to the multi-channel sampling data, obtains multichannel frequency domain data；
The relevant calculation module carries out related operation to the multichannel frequency domain data, obtains Rapid Radio and observes data cruelly；
The integration module observes cruelly Rapid Radio data according to temporal resolution requirement and adds up, to reduce data volume；
The network encapsulation and sending module will treated that Rapid Radio observes data cruelly seals by the integration module
Dress, and the high-speed data crosspoint is sent to by network.
7. the sudden and violent real-time detection device of the Rapid Radio of multibeam receiver according to claim 3, wherein the GPU line
Journey includes:
Data copy into submodule, and Rapid Radio is observed to data cruelly from CPU memory copying to GPU memory；
RFI eliminates submodule, and the Rapid Radio in the GPU memory is observed data cruelly and carries out interference elimination in frequency domain；
De-dispersion submodule receives and observes data cruelly by the Rapid Radio that RFI elimination submodule carries out after interference elimination,
Carry out De-dispersion calculating；
Candidate body searches submodule, observes in data cruelly in the Rapid Radio of De-dispersion submodule output and extracts fast rapid fire
Electric sudden and violent candidate body；
Data copy out submodule, and the candidate body is searched the cruelly candidate body of Rapid Radio that submodule extracts and is copied by GPU memory
Shellfish is into CPU memory.
8. a kind of sudden and violent real-time detection system of the Rapid Radio of multibeam receiver, wherein including multi-beam described in claim 1
The sudden and violent real-time detection device of the Rapid Radio of receiver and real-time detection device sudden and violent with the Rapid Radio of multibeam receiver are connected
Radio telescope.
9. a kind of sudden and violent real-time detecting method of the Rapid Radio of multibeam receiver, comprising:
Signal acquisition and frequency-domain transform are carried out to the road N beam signal, the output road N Rapid Radio observes data cruelly, carries out high speed number
According to being distributed to each calculate node after exchange；
Data are observed cruelly to the road N Rapid Radio respectively to be handled in real time, are extracted every road Rapid Radio respectively and are observed data cruelly
In the cruelly candidate body of Rapid Radio and it is stored respectively；
According to temporal information, converges the road N Rapid Radio and observe the cruelly candidate body of the Rapid Radio in data cruelly in the number of same time
According to progress subsequent signal synthesis；Differentiate that the cruelly candidate body of Rapid Radio carries out the cruelly candidate body detection of Rapid Radio and classification, to quick
Radio storm candidate's body carry out at figure, link to Web Publishing unit and issued, at the same by modification Redis database key assignments into
Row triggering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225392.4A CN109991479B (en) | 2019-03-22 | 2019-03-22 | Fast radio storm real-time detection device, system and method of multi-beam receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225392.4A CN109991479B (en) | 2019-03-22 | 2019-03-22 | Fast radio storm real-time detection device, system and method of multi-beam receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109991479A true CN109991479A (en) | 2019-07-09 |
| CN109991479B CN109991479B (en) | 2020-12-11 |
Family
ID=67131029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910225392.4A Active CN109991479B (en) | 2019-03-22 | 2019-03-22 | Fast radio storm real-time detection device, system and method of multi-beam receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109991479B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110427878A (en) * | 2019-07-31 | 2019-11-08 | 中国科学院新疆天文台 | A kind of sudden and violent signal recognition method of Rapid Radio and system |
| CN110926455A (en) * | 2019-12-03 | 2020-03-27 | 中国科学院新疆天文台 | Self-adaptive radio frequency interference elimination method for radio astronomical signals |
| CN111292222A (en) * | 2020-01-22 | 2020-06-16 | 中国科学院新疆天文台 | Pulsar de-dispersion device and method |
| CN111487473A (en) * | 2020-04-16 | 2020-08-04 | 中国科学院新疆天文台 | Automatic detection system and method for rapid radio storm |
| CN111504362A (en) * | 2020-05-07 | 2020-08-07 | 中国科学院新疆天文台 | Multifunctional processing system and method for observation signals |
| CN116482449A (en) * | 2023-06-20 | 2023-07-25 | 中国科学院国家天文台 | Real-time detection method for fast electric storm |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054135A (en) * | 1990-02-13 | 1991-08-28 | 汤姆森公司综合电信研究室 | Survey and evaluate the device of the method for the emission coefficient linearity |
| JP2002278766A (en) * | 2001-03-16 | 2002-09-27 | Hitachi Ltd | Center loading method of information processor |
| JP2013212028A (en) * | 2012-03-30 | 2013-10-10 | Omron Automotive Electronics Co Ltd | Rotation information detection method of electric motor, rotation information detection device of electric motor and electric motor controller |
| CN103364645A (en) * | 2013-07-17 | 2013-10-23 | 中国船舶重工集团公司第七二四研究所 | Near-field measurement method for antenna array of virtual feed network |
| CN103901281A (en) * | 2014-03-20 | 2014-07-02 | 中国科学院云南天文台 | Channel configurable type radio astronomy radiometer based on MMIC microwave radio detection chip |
| CN106403930A (en) * | 2016-08-26 | 2017-02-15 | 中国科学院新疆天文台 | Pulsar observation device, system and method |
| CN106405583A (en) * | 2016-11-03 | 2017-02-15 | 中国科学院云南天文台 | Research and early warning platform for influence on navigation signals caused by solar radio burst, and method of research and early warning platform |
| CN106771653A (en) * | 2016-11-25 | 2017-05-31 | 中国科学院新疆天文台 | A kind of sudden and violent real-time detection devices, systems and methods of Rapid Radio |
| CN107623179A (en) * | 2017-10-11 | 2018-01-23 | 广东通宇通讯股份有限公司 | E band frequency ranges broad beam antennas and antenna equipment |
| CN109063302A (en) * | 2018-07-24 | 2018-12-21 | 山东大学 | The high-resolution solar radio radiation data processing system and method for adaptive outburst judgement |
-
2019
- 2019-03-22 CN CN201910225392.4A patent/CN109991479B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054135A (en) * | 1990-02-13 | 1991-08-28 | 汤姆森公司综合电信研究室 | Survey and evaluate the device of the method for the emission coefficient linearity |
| JP2002278766A (en) * | 2001-03-16 | 2002-09-27 | Hitachi Ltd | Center loading method of information processor |
| JP2013212028A (en) * | 2012-03-30 | 2013-10-10 | Omron Automotive Electronics Co Ltd | Rotation information detection method of electric motor, rotation information detection device of electric motor and electric motor controller |
| CN103364645A (en) * | 2013-07-17 | 2013-10-23 | 中国船舶重工集团公司第七二四研究所 | Near-field measurement method for antenna array of virtual feed network |
| CN103901281A (en) * | 2014-03-20 | 2014-07-02 | 中国科学院云南天文台 | Channel configurable type radio astronomy radiometer based on MMIC microwave radio detection chip |
| CN106403930A (en) * | 2016-08-26 | 2017-02-15 | 中国科学院新疆天文台 | Pulsar observation device, system and method |
| CN106405583A (en) * | 2016-11-03 | 2017-02-15 | 中国科学院云南天文台 | Research and early warning platform for influence on navigation signals caused by solar radio burst, and method of research and early warning platform |
| CN106771653A (en) * | 2016-11-25 | 2017-05-31 | 中国科学院新疆天文台 | A kind of sudden and violent real-time detection devices, systems and methods of Rapid Radio |
| CN107623179A (en) * | 2017-10-11 | 2018-01-23 | 广东通宇通讯股份有限公司 | E band frequency ranges broad beam antennas and antenna equipment |
| CN109063302A (en) * | 2018-07-24 | 2018-12-21 | 山东大学 | The high-resolution solar radio radiation data processing system and method for adaptive outburst judgement |
Non-Patent Citations (2)
| Title |
|---|
| 聂俊 等: "射电终端发展与110m射电望远镜终端系统", 《《中国科学》杂志社》 * |
| 裴鑫 等: "基于ROACH2的脉冲星终端研制进展", 《天文学进展》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110427878A (en) * | 2019-07-31 | 2019-11-08 | 中国科学院新疆天文台 | A kind of sudden and violent signal recognition method of Rapid Radio and system |
| CN110926455A (en) * | 2019-12-03 | 2020-03-27 | 中国科学院新疆天文台 | Self-adaptive radio frequency interference elimination method for radio astronomical signals |
| CN110926455B (en) * | 2019-12-03 | 2021-08-27 | 中国科学院新疆天文台 | Self-adaptive radio frequency interference elimination method for radio astronomical signals |
| CN111292222A (en) * | 2020-01-22 | 2020-06-16 | 中国科学院新疆天文台 | Pulsar de-dispersion device and method |
| CN111292222B (en) * | 2020-01-22 | 2023-05-12 | 中国科学院新疆天文台 | Pulsar dispersion eliminating device and method |
| CN111487473A (en) * | 2020-04-16 | 2020-08-04 | 中国科学院新疆天文台 | Automatic detection system and method for rapid radio storm |
| CN111487473B (en) * | 2020-04-16 | 2022-07-19 | 中国科学院新疆天文台 | Automatic detection system and method for rapid radio storm |
| CN111504362A (en) * | 2020-05-07 | 2020-08-07 | 中国科学院新疆天文台 | Multifunctional processing system and method for observation signals |
| CN111504362B (en) * | 2020-05-07 | 2022-03-22 | 中国科学院新疆天文台 | Multifunctional processing system and method for observation signals |
| CN116482449A (en) * | 2023-06-20 | 2023-07-25 | 中国科学院国家天文台 | Real-time detection method for fast electric storm |
| CN116482449B (en) * | 2023-06-20 | 2023-09-08 | 中国科学院国家天文台 | Real-time detection method for fast electric storm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109991479B (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109991479A (en) | The sudden and violent real-time detection apparatus, system and method for the Rapid Radio of multibeam receiver | |
| De Maio et al. | A polarimetric adaptive matched filter | |
| Yu et al. | CSSF MIMO radar: Compressive-sensing and step-frequency based MIMO radar | |
| CN106771653B (en) | A kind of sudden and violent real-time detection devices, systems, and methods of Rapid Radio | |
| Goodman et al. | Optimum and decentralized detection for multistatic airborne radar | |
| DE19511752A1 (en) | Process for high-resolution evaluation of signals for one- or two-dimensional direction or frequency estimation | |
| US8121222B2 (en) | Systems and methods for construction of time-frequency surfaces and detection of signals | |
| CN107976673A (en) | Improve the MIMO radar imaging method of large scene target imaging quality | |
| CN106556783A (en) | A kind of shelf depreciation direction-finding method in transformer station based on superfrequency phased array principle | |
| CN108828546A (en) | A kind of space-based multichannel moving-target radar receiving processing system and method | |
| CN104155629B (en) | Fewer snapshots method for estimating signal wave direction under a kind of impact noise background | |
| Slezak et al. | 60 ghz blockage study using phased arrays | |
| CN115508799A (en) | Distributed passive radar target detection method based on moment space | |
| CN114966565A (en) | Distributed radar cooperative anti-main lobe interference method and device based on blind source separation | |
| Sheikhi et al. | Model-based adaptive target detection in clutter using MIMO radar | |
| Zhang et al. | Joint design of transmit weight sequence and receive filter for improved target information acquisition in high-resolution radar | |
| CN111464215B (en) | Signal acquisition and processing system and method | |
| EP1820045B1 (en) | Antenna back-lobe rejection | |
| CN115508828A (en) | Intelligent fusion detection method for radar target under subspace interference | |
| CN115508791A (en) | Intelligent target fusion detection method in unknown dry noise environment | |
| Hellbourg et al. | Spatial filtering experiment with the askap beta array | |
| Filippini et al. | Polarimetric detection scheme for passive radar based on a 2D auto-regressive disturbance model | |
| CN112666528A (en) | Multi-station radar system interference identification method based on convolutional neural network | |
| Yarovoy et al. | Ultra-wideband technology today | |
| Worms | RF direction finding with a reduced number of receivers by sequential sampling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |