CN108809450A - A kind of distributed frequency spectrum monitoring method - Google Patents
A kind of distributed frequency spectrum monitoring method Download PDFInfo
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- CN108809450A CN108809450A CN201810862704.8A CN201810862704A CN108809450A CN 108809450 A CN108809450 A CN 108809450A CN 201810862704 A CN201810862704 A CN 201810862704A CN 108809450 A CN108809450 A CN 108809450A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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Abstract
The present invention provides a kind of distributed frequency spectrum synergic monitoring system, including a monitoring and controlling center for issuing monitoring task A and multiple acquisitions and the monitoring receiver for returning frequency spectrum data, a monitoring processor is connected between monitoring and controlling center and monitoring receiver comprising cooperative approach formulates module and data analysis and processing module；Cooperative approach formulates module and formulates scheduling monitoring scheme B and monitoring order C according to the requirement of monitoring task A, and selected, be grouped according to scheduling monitoring scheme B, label, synchronization, monitoring receiver acquires frequency spectrum data according to monitoring order C；Data Analysis Services module receives and the frequency spectrum data of research and application receiver passback, and signal data by analysis is back to monitoring and controlling center.The spectrum monitoring method based on the system that the present invention also provides a kind of.The spectrum monitoring method of the present invention has preferable scan period, spectral resolution and receiving sensitivity simultaneously.
Description
Technical field
The present invention relates to a kind of spectrum monitoring methods, and in particular to a kind of distributed frequency spectrum monitoring method.
Background technology
Wireless frequency spectrum is a kind of non-renewable natural resources, be wireless communication base support, total amount be it is limited,
Also determine the development of the entire communications industry.The use of wireless frequency spectrum is all by interference between communication environments, communication equipment etc.
Multifactor influence so that really practical frequency spectrum is few less.
Spectrum monitoring refers to detection, searches for, intercepts and captures electromagnetic environment and electromagnetic spectrum signal in monitoring region, and to radio
Signal such as is analyzed, is identified, being monitored, counting electromagnetic spectrum parameter and operating characteristic at the movable general designation.Monitoring includes mainly letter
Number detection, search and intercepting and capturing, display, signal spectrum parameter measurement, signal identification etc..Spectrum monitoring is carried out, mainly there is following meaning
Justice.First, to the spectrum monitoring of electromagnetic environment, foundation can be provided for the division and distribution of frequency band, the assignment of frequency.Secondly,
Spectrum monitoring is positioning, investigates and prosecutes illegal unknown radio signal basis means, contributes to the order for maintaining radio wave in air.
Finally, the radio subscriber that spectrum monitoring contributes to management and control legal makes them be operated in specified frequency, carries out specified industry
Business.
Currently, more and more using for radio transmission facility make the difficulty of monitoring radio-frequency spectrum increasing,
The frequency range used is wider, channel capacity fluctuating bigger, and time change is stronger.This requires the frequency ranges of receiver more
Extensively, narrowband is narrower, and broadband also needs wider.In face of various bursts, faster sweep speed and shorter scanning week are needed
Phase；In face of various small-signals, stronger receiving sensitivity and more effective signal detecting method are needed.In short, to new one
For receiver it is real-time monitoring etc. it is various require it is higher and higher.Meanwhile with the development of integrated circuit, receiver also facing
Miniaturization, digitlization, functionalization direction are developed.
In short, for various reasons so that electromagnetic background becomes increasingly complex, and prodigious difficulty is brought for the monitoring of signal.
Continually changing application environment and diversified monitoring task, the requirement to receiver are also higher and higher in real work.
Meanwhile in order to towards under complex electromagnetic environment future battlefield, the anti-terrorism disaster relief, overseas action etc. application scenarios, to meet frequency spectrum
" a wide range of, fast deployment, low-power consumption " actual demand of monitoring, is highly desirable to build distributed intelligence spectrum monitoring net.Distribution
Formula spectrum monitoring net have the characteristics that monitoring accuracy is high, System Error-tolerance Property is good and can remote monitoring, be to set up full region to cover
Lid, full frequency-domain is seamless, all the period of time is uninterrupted, the effective way of the electromagnetic spectrum monitoring net of all weather operations.
Therefore, establish and improve wireless frequency spectrum monitoring means, enhanced radio spectrum monitoring work, to having effectively utilized
The frequency spectrum resource of limit, the spectrum management for implementing science have important practical significance.
Currently, existing frequency spectrum monitoring system mainly uses spectrum fragmentation step-searching pattern as shown in Figure 1, that is, connect
Receipts machine is scanned for according to parameters such as the initial frequencies, termination frequency, step frequency interval of pre-set search frequency range, stepping
Frequency interval (monitoring bandwidth) is generally up to system maximum process bandwidth, and representative value is 10MHz, 20MHz at present.Such as Fig. 1 institutes
Show, by scanning band fstart-fendRange is divided into m frequency sub-band, is then carried out at intermediate-freuqncy signal to each frequency sub-band respectively
Reason, is then handled each frequency sub-band frequency spectrum, then is spliced into final spectrum scan processing data.
Distributed frequency spectrum monitoring method used by above-mentioned existing frequency spectrum monitoring system is primarily present following defect and not
Foot [under the bright complexity electromagnetic backgrounds of Cui Wei signal interception and classification [D] liberation army information engineering university, 2007.]：
(1) system can not simultaneously monitor all frequency ranges, there are the blind area of search, be easy to omit except Current Scan frequency range
The important transient signal occurred.For example, current spectral is scanning frequency sub-band 1, while this is engraved in frequency sub-band m presence signals, so
And when receiver is scanned to frequency sub-band m, which has disappeared, then this signal is not captured.
(2) signal frequency search range is very wide (generally reaching GHz or more) under complicated electromagnetic background, but wider frequency is searched
Rope range and high frequency resolution (low RBW) and there are certain contradictory relations between the search cycle.In certain frequency search
In range, if FFT points are fixed, increases monitoring bandwidth and the search cycle may make to shorten, but the drop of frequency resolution can be caused
Low (RBW analyzes bandwidth and increases), therefore, it is difficult to coordinate the contradictory relation between search cycle and frequency resolution.
(3) for the monitoring of channel noise floor level fluctuation larger frequency range and small-signal, search effect also compares
It is poor.There are mainly two types of small-signals, and one is signal energy itself is smaller, the signal that receiver is listened at this time is very micro-
It is weak；It is exactly for second to interfere excessive, useful signal is mingled in a large amount of very noisies, and groundwork at this time is noise to be inhibited
Interference, so as to the small-signal being tested with from interference.Whether which kind of, if the receiving sensitivity of monitoring receiver is not
Enough height, can all significantly affect the reception and judgement of weaker signal.
In brief, existing monitoring method can not possibly have simultaneously the shorter scan period, higher spectral resolution, compared with
Good receiving sensitivity is difficult to be carried out at the same time effectively to instantaneous signal/burst/narrowband Overlapped Spectrum Signals/small-signal
Monitoring.
Invention content
The purpose of the present invention is to provide a kind of distributed frequency spectrum monitoring methods of new intelligence, so that distributed frequency spectrum is assisted
Met simultaneously in the performance indicators such as scan period, spectral resolution, receiving sensitivity with monitoring system.
To achieve the goals above, the present invention provides a kind of distributed frequency spectrum synergic monitoring system, including one is used to issue
The monitoring and controlling center of monitoring task A and multiple acquisitions and the monitoring receiver for returning frequency spectrum data, the monitoring and controlling center
A monitoring processor is connected between monitoring receiver, which includes that cooperative approach formulates module and data analysis
Processing module；The cooperative approach formulates requirement of the module according to monitoring task A, formulates scheduling monitoring scheme B and multiple monitorings
Order C, and the monitoring receiver selected, be grouped according to scheduling monitoring scheme B, label, synchronization, the monitoring reception
Machine orders C to acquire frequency spectrum data according to the monitoring；The Data Analysis Services module receives and the passback of research and application receiver
Frequency spectrum data, and signal data by analysis is back to monitoring and controlling center.
The monitoring processor further includes communication module, and the cooperative approach is formulated module and received by the communication module
Monitoring task A orders C with monitoring is issued, and the Data Analysis Services module passes through the communication module and receives monitoring receiver
Data described in the frequency spectrum data of passback and passback by analysis.
On the other hand, the present invention provides a kind of distributed frequency spectrum monitoring method, which is characterized in that including：S1：There is provided one
According to distributed frequency spectrum synergic monitoring system as claimed in claim 1 or 2；S2：Monitoring and controlling center is generated according to the instruction of user
And issue monitoring task A；S3：According to the requirement of monitoring task A, the cooperative approach for monitoring processor formulates module formulation scheduling prison
Survey option b and monitoring order C；S4：Cooperative approach formulate module according to the scheduling monitoring scheme B to multiple monitoring receivers into
Row selection, grouping, label, synchronization；S5：Monitoring receiver orders C to acquire frequency spectrum data according to the monitoring, and by frequency spectrum data
It is back to Data Analysis Services module；S6：Data Analysis Services module receives and the frequency spectrum data of research and application receiver passback,
Signal data by analysis is back to monitoring and controlling center simultaneously；S7：Monitoring and controlling central store is received with display
Signal data；S8：Monitoring task A terminates；Wherein, the scheduling monitoring scheme B includes：Selection sets a benchmark monitoring and receives
Machine, the monitoring multiple monitoring receivers of processor scheduling cooperate with the benchmark monitoring receiver in the first collaboration mode and/or second
It cooperates under pattern and/or third collaboration mode.
First collaboration mode is frequency dividing collaboration scan pattern, and second collaboration mode is with frequency collaboration splicing mould
Formula, and the third collaboration mode is synchronous merging patterns with frequency.
The quantity of the monitoring receiver to cooperate under the first collaboration mode with benchmark monitoring receiver is m,
If Tr>=T, then m=0, conversely,Wherein, TrMonitoring method is required to complete a full frequency band for monitoring task A
Scan required shortest time, unit s；T is that single monitoring receiver carries out the required duration of full band scan, unit
For s；The quantity of the monitoring receiver to cooperate under the second collaboration mode with benchmark monitoring receiver is l, if
Wr>=w, then l=0, conversely,Wherein, WrFor the frequency resolution of the desired monitoring methods of monitoring task A, unit
For Hz；W is the spectral resolution of monitoring receiver, unit Hz；It is cooperateed under third collaboration mode with benchmark monitoring receiver
The quantity of the monitoring receiver of work is p, if Sr>=s, then p=0, conversely,Wherein, SrFor prison
Requirements of the survey task A to the sensitivity of monitoring method, unit dB；S is the sensitivity of monitoring receiver, unit dB.
The sum of the monitoring receiver is at least m+l+p+1.
The monitoring order C includes Cij,
Wherein CijIndicate that the monitoring order issued to the monitoring receiver marked as ij, ij then indicate the i-th collaboration mode
J-th of monitoring receiver, i=1,2,3, fijIndicate the scanning initial frequency of monitoring receiver, fij' indicate to sweep in monitoring task A
Retouch the lower limit of frequency, fij" indicate the upper limit of scan frequency in monitoring task A.
Described in S4 to multiple monitoring receivers carry out selection be by way of generating random number by monitoring processor into
Row is specified, or is specified by monitoring processor according to the remaining capacity or location distribution of monitoring receiver.
Grouping and label described in S4 be randomly assigned in a manner of generating random number or according to monitoring receiver residue
Electricity is allocated specified.
The distributed frequency spectrum synergic monitoring system of the present invention, can be to avoid sweeping by the cooperating between multiple receivers
Retouch it is conflicting between period, spectral resolution and receiving sensitivity, in addition, distributed frequency spectrum monitoring method of the present invention can be with
It carries out cooperating to meet distributed frequency spectrum by the monitoring receiver in flexible dispatching distributed frequency spectrum synergic monitoring system
The different task demand of synergic monitoring system.Wherein, scheduling monitoring receiver helps to lower complete with the work of the first collaboration mode
The scan period of frequency range, the reduction in full band scan period can effectively improve the catch probability of monitoring system instantaneous signal.
Scheduling monitoring receiver is worked with the second collaboration mode so that multiple monitoring receivers are time domains in the synergic monitoring of same frequency
Continuously, then can take certain processing method that such frequency spectrum data is carried out splicing, and then spectral resolution obtains
It improves and meets, can preferably realize the monitoring to narrowband Overlapped Spectrum Signals and differentiation.Monitoring receiver is dispatched with third cooperation mould
The signal-to-noise ratio of system can be required to reduce by formula work.In addition, the selection and grouping of monitoring receiver can be according to the surplus of receiver
Remaining electricity it is determining or by way of generating random number it is specified, so as to according to the reasonable assigned tasks of remaining capacity, make point
The work of cloth frequency spectrum synergic monitoring system is more longlasting.
Description of the drawings
Fig. 1 is the schematic diagram of the spectrum fragmentation scan pattern of the prior art；
Fig. 2 is the system architecture diagram of distributed frequency spectrum synergic monitoring system；
Fig. 3 is the structural schematic diagram of the monitoring processor of distributed frequency spectrum synergic monitoring system as shown in Figure 2；
Fig. 4 is a kind of flow chart of distributed frequency spectrum monitoring method；
Fig. 5 is the principle of the first collaboration mode of the scheduling monitoring scheme of distributed frequency spectrum monitoring method as shown in Figure 4
Figure；
Fig. 6 is the principle of the second collaboration mode of the scheduling monitoring scheme of distributed frequency spectrum monitoring method as shown in Figure 4
Figure.
Specific implementation mode
Below in conjunction with the accompanying drawings, presently preferred embodiments of the present invention is provided, and is described in detail, makes to be better understood when this hair
Bright function, feature.
It is illustrated in figure 2 the distributed frequency spectrum synergic monitoring system according to an embodiment of the invention, is mainly wrapped
Sequentially connected monitoring and controlling center 1, monitoring processor 2 and multiple monitoring receivers 3 are included, as shown in Figure 2.Assuming that monitoring net is total
Deploy Z monitoring receiver 3.
Wherein, monitoring and controlling center 1 be used for monitor task A issue and information processing work.
Monitoring receiver 3 is distributed, mainly undertakes the acquisition of frequency spectrum data, is set as collected time domain data
It carries out FFT to change to obtain frequency spectrum data, and frequency spectrum data is back to monitoring processor 2.Its with it is small, low in energy consumption, at
The advantages of this low, easy deployment.
The monitoring receiver 3 all has characterisitic parameter Ri=[f1,f2,fs, w, s], these parameters are all receivers itself
Characteristic.Wherein, f1For the lower limit of frequency scanning, f2For the upper limit of frequency scanning, frequency sweeping ranges f=f is defined2-f1It can be with
It is very wide, it will be appreciated that at 30Hz-3GHz frequency spectrums；fsFor the sample rate (unit of monitoring receiver 3：Hz), general in receiver at present
No more than 20MHz；W is the spectral resolution (unit of monitoring receiver 3：Hz), it can be several hertz and arrive several kHz；S is to connect
Sensitivity (the unit of receipts machine：dB).Assuming that the frequency sweeping ranges f of all monitoring receivers1-f2, sample rate fs, FFT sampled points
Number, spectral resolution w, sensitivity s all sames, and assume that sampling number when receiver carries out spectrum analysis FFT is NFFT, then
The frequency interval of receiver single sweep operation is Δ f=fs, sampling time Δ t=NFFT·Ts=NFFT/fs, frequency resolution w=
fs/NFFT=1/ Δ t.Individually receiver scan period all the period of time is
In addition, the sum of monitoring receiver 3 is Z, the monitoring required receiver numbers of task A every time can be met, and every
The frequency sweeping ranges of a monitoring receiver also cover mission requirements.
Monitoring processor 2 be deployed in monitoring receiver periphery and using wirelessly communicate or wire communication by the way of and monitoring
Control centre 1 connects.Processor 2 is monitored as shown in figure 3, be the gateway aggregation node for having certain communication capacity and processing capacity,
23 3 module 21, Data Analysis Services module 22 and communication module parts are formulated including cooperative approach.Cooperative approach formulates mould
Block 21 calculates and formulates scheduling monitoring scheme B and monitoring order C, and according to scheduling monitoring scheme according to the requirement of monitoring task A
B selects the monitoring receiver 3, is grouped, label, synchronization, the monitoring receiver 3 orders C to adopt according to the monitoring
Collect frequency spectrum data；Interaction of the communication module 23 for signaling and data between monitoring and controlling center 1, monitoring receiver 3, institute
It states cooperative approach to formulate module 21 by the communication module 23 reception monitoring task A and issue monitoring order C, and the data point
Processing module 22 is analysed to receive described in the frequency spectrum data and passback that monitoring receiver 3 returns by analysis by the communication module 23
Data.
According to distributed frequency spectrum synergic monitoring system described above, the present invention provides a kind of distributed frequency spectrum monitoring sides
Method, quickly to provide region electromagnetic spectrum Informational support for military field and civil field.As shown in figure 4, the distributed frequency spectrum
Monitoring method specifically includes：
S1：One is provided according to distributed frequency spectrum synergic monitoring system described above；
S2：Monitoring and controlling center 1 generates according to the instruction of user and issues monitoring task A；
Wherein, monitoring task A=[Fstart,Fend,Tr,Wr,Sr]。FstartFor the starting of full scan frequency range in monitoring task A
Frequency, FendFor the termination frequency of full scan frequency range in monitoring task A, it is defined as the range F=of monitoring frequency in monitoring task A
Fend-Fstart；TrMonitoring method is required to complete the required shortest time (unit of a full band scan for monitoring task A：S),
TrThat characterize is the ability that monitoring method captures instantaneous signal, burst, TrIt is smaller, then the monitoring method capture instantaneous signal/
The ability of burst is stronger；WrFor the frequency resolution (unit of the desired monitoring methods of monitoring task A：Hz), WrIt is smaller, then
The spectral resolution of the monitoring method is higher, and the recognition capability of narrowband Overlapped Spectrum Signals is stronger；SrIt is to monitor task A to monitoring method
Sensitivity requirement (unit：DB), the ability of monitoring method monitoring weak signal, S are characterizedrNumerical value is lower, illustrates sensitive
Degree is higher, which identifies that the ability of small-signal is stronger.
S3：According to the requirement of monitoring task A, Data Analysis Services module 22 formulates scheduling monitoring scheme B and monitoring is ordered
C, and calculate the quantity of the monitoring receiver 3 needed for scheduling monitoring scheme B.
Monitoring scheme B=[m, l, p] is dispatched, that is, dispatching monitoring scheme B includes：Monitor selection one base of setting of processor 2
Quasi- monitoring receiver (i.e. #0 monitoring receivers 3), m monitoring receiver 3 of scheduling cooperate with benchmark monitoring receiver first
Pattern cooperates, and l monitoring receiver 3 of scheduling cooperates with benchmark monitoring receiver under the second collaboration mode, dispatches p
A monitoring receiver 3 cooperates with benchmark monitoring receiver under third collaboration mode.Wherein, benchmark monitoring receiver scans
Initial frequency be fixed as FstartAnd scanning range is F.Therefore, the sum of monitoring receiver 3 is at least m+l+p+1.
Wherein：
First collaboration mode is frequency dividing collaboration scan pattern.Three monitoring receivers 3 are illustrated in figure 5 to sweep in frequency dividing collaboration
The cooperation schematic diagram under pattern is retouched, #0, #1, #2 respectively illustrate the scan pattern of these three monitoring receivers 3.Assuming that first
The sum of the monitoring receiver 3 to cooperate under collaboration mode is m+1, then first collaboration mode enables these monitoring receivers 3
Scanning initial frequency between be divided into F/ (m+1) (unit：Hz) and the scanning range of each monitoring receiver 3 is F/ (m+1),
In, F is the range of monitoring frequency in monitoring task A.In m monitoring receiver 3 and reference receiver under the first collaboration mode
Collaboration scanning under, the scan period of full frequency band is then reduced to T/m+1 (units by T：Hz).In Figure 5, reference receiver frequency spectrum
The initial frequency of scanning is Fstart, the initial frequency of #1 receiver spectrum scans is Fstart+ F/3, #2 receiver frequency spectrum are swept
The initial frequency retouched is Fstart+2F/3.Under the collaboration scanning of 3 monitoring receivers 3, the scan period of full frequency band is reduced by T
To T/3.The reduction in full band scan period can effectively improve the catch probability of monitoring system instantaneous signal.
The number m of the monitoring receiver 3 to cooperate with benchmark monitoring receiver 3 under the first collaboration mode can be according to prison
The parameter T of survey task ArSpecific requirement calculate：If Tr>=T, then m=0, conversely,Wherein, T is single
Monitoring receiver 3 carries out the required duration of full band scan, that is, scan period, unit s；It indicates to T/Tr
Round up number.The initial frequency that then each monitoring receiver 3 scans is spaced F/ (m+1) (unit successively：Hz), specifically, often
The initial frequency f of a monitoring receiver 31jFor：
f1j=Fstart+ jF/m+1, j ∈ [1, m] ... (1)
f1j：The scanning initial frequency of j-th of monitoring receiver, unit under first collaboration mode：Hz；Fstart：Monitoring task
The initial frequency of the lower limit of monitoring frequency namely benchmark monitoring receiver, unit in A：Hz；F：Monitoring frequency in monitoring task A
Range；m：The number of the monitoring receiver 3 to cooperate with benchmark monitoring receiver 3 under the first collaboration mode.
Second collaboration mode is to cooperate with Splicing model with frequency.It is illustrated in figure 6 two monitoring receivers 3 and cooperates with spelling in same frequency
Connect the cooperation schematic diagram under pattern, it is assumed that the sum of the monitoring receiver 3 to cooperate under the second collaboration mode is l, then should
The scanning initial frequency interval F of these monitoring receivers 3 is enabled with frequency collaboration Splicing models(i.e. fs), and each monitoring receiver 3
Scanning range be F, wherein FsFor the sample rate (unit of monitoring receiver 3：Hz), F is monitoring frequency in monitoring task A
Range.This makes multiple monitoring receivers 3 in the synergic monitoring of same frequency be that time domain is continuous, then certain place can be taken
Reason method by such frequency spectrum data carry out splicing, such as can to each receiver same frequency FFT result Xi[k] is carried out
IFFT obtains xi(n), then by l+1 groups xi(n) it is (l+1) N that points are done after mergingFFTFFT.Cooperate with spliced analysis
The long Δ t ' of window=(l+1) Δ t, spliced spectral resolution are w '=(l+1) w.As shown in fig. 6, monitoring processor 2 can
The same frequency of #1 monitoring receivers 3 and #4 monitoring receivers 3 processing data are subjected to splicing analysis.In turn, it monitors and connects at l
With under the cooperative work mode of benchmark monitoring receiver 3, the spectral resolution of distributed frequency spectrum synergic monitoring system obtains receipts machine 3
It improves and meets, can preferably realize the monitoring to narrowband Overlapped Spectrum Signals and differentiation.
The number l of the monitoring receiver 3 to cooperate with benchmark monitoring receiver 3 under the second collaboration mode can be according to prison
The parameter W of survey task ArSpecific requirement calculate：If Wr>=w, then l=0, explanation need not cooperate with other monitoring receivers 3 into
Row splices with frequency collaboration, conversely,Wherein, w is the spectral resolution (unit of monitoring receiver 3：Hz).Enable prison
Survey the scanning initial frequency interval F of receiver 3s, specifically, the initial frequency f of each receiver2jFor：
f2j=Fstart+j·Fs, j ∈ [1, l]
f2j：The scanning initial frequency of j-th of monitoring receiver 3, unit under second collaboration mode：Hz；Fstart：Monitoring is appointed
The lower limit of monitoring frequency namely the initial frequency of benchmark monitoring receiver 3 in business A, unit：Hz；Fs：Monitoring receiver 3 is adopted
Sample rate, also as monitoring receiver 3 carry out single sweep operation frequency range, unit：Hz.
Third collaboration mode is synchronous merging patterns with frequency, and as multiple monitoring receivers 3 synchronize simultaneously monitors with frequency, this
0 is divided between the scanning initial frequency of a little monitoring receivers 3, and the scanning range of each monitoring receiver 3 is F, wherein F is prison
The range of monitoring frequency in survey task A.According to Calculation of Sensitivity formula S=- 114dB+10lgBn+10lgF0+ SNR, it is known that, it connects
Receive clever sensitivity and noise coefficient F0, receiver bandwidth BnIt is related to the minimum Signal to Noise Ratio (SNR) needed for monitoring task A.Receiver
Noise coefficient is with bandwidth it has been determined that the sensitivity for therefore improving system is mainly the signal-to-noise ratio requirement of reduction system.
According to incoherent feature between the independent sample of same signal in wireless propagation environment, and assume each receiver
The signal-to-noise ratio of output is all equal, and it is synchronous under third collaboration mode to merge gain using maximum-ratio combing criterion for we
Monitoring receiver 3 number p+1 it is directly proportional.Therefore, often increase a synchrodyne, then the signal-to-noise ratio of system can be required
Reduce 3dB.
The number p of the monitoring receiver 3 to cooperate with benchmark monitoring receiver 3 under third collaboration mode can be according to prison
The parameter S of survey task ArSpecific requirement calculate：If Sr>=s, i.e. 3 sensitivity of monitoring receiver meet monitoring mission requirements,
Then p=0, conversely,S is the sensitivity (unit of monitoring receiver 3：dB).The p monitoring receiver 3 is enabled to sweep
The initial frequency retouched is Fstart, then pass through the synchronous synergetic monitoring of p monitoring receiver 3 and benchmark monitoring receiver 3, system
Receiving sensitivity be satisfied and improve, preferably realize the monitoring and identification to small-signal.
S4：Cooperative approach formulate module 21 monitoring receiver 3 is selected according to the scheduling monitoring scheme B, is grouped,
Label, synchronization.Wherein, the selection carried out to multiple monitoring receivers 3 can be by way of generating random number by supervising
It surveys processor 2 to be specified, or according to the remaining capacity or location distribution of monitoring receiver 3 by the monitoring processor 2
It is specified；The grouping and label can also be to be connect according to monitoring either being randomly assigned in a manner of generating random number
The remaining capacity of receipts machine 3 be allocated it is specified (if reference electric quantity, can allow receiver feed back remaining capacity to processor, and
How much preprocessor is grouped and specifies according to electricity) etc..Synchronizing for receiver can take GPS to synchronize, or monitoring
Processor sends synchronic command by broadcast band.
S5：The monitoring receiver 3 synchronously completed orders C to acquire frequency spectrum data according to the monitoring, and frequency spectrum data is returned
Reach Data Analysis Services module 22.
The monitoring order C includes CijOr C0,
Wherein, CijIndicate the monitoring order issued to the receiver marked as ij, Cij=[fij,fij′,fij"],
Wherein i indicates collaboration mode, and i=1,2,3, ij then indicate that collaboration mode is j-th of receiver of i, fijIndicate prison
Survey the scanning initial frequency of receiver 3, fijThe lower limit of scan frequency, f in ' expression monitoring task AijIt " indicates in monitoring task A
The upper limit of scan frequency.
C0For the monitoring order to reference receiver, C0=[Fstart, Fstart, Fend]。
S6：The frequency spectrum data that Data Analysis Services module 22 receives and research and application receiver 3 returns, while by analysis
Signal data be back to monitoring and controlling center 1 according to intervals.
S7：Monitoring and controlling center 1 stores the signal data received with display, and judges whether monitoring task A ties simultaneously
Beam.
S8：Monitoring task A terminates, and monitoring and controlling center 1 issues monitoring END instruction.
Experimental result
Parametric assumption：Monitoring task A=[100MHz, 200MHz, 0.5s, 2Hz, -99dB], the routine of monitoring receiver 3
Parameter R=[30MHz, 3000MHz, 10MHz, 10Hz, -90dB] then calculates the full band scan time of single monitoring receiver 3According to the calculating step of above-mentioned monitoring method B, obtains B=[Isosorbide-5-Nitrae, 2], that is, mean
It：Monitoring processor selects one monitoring receiver 3 of setting as benchmark monitoring receiver, dispatches 1 monitoring receiver 3 and base
Quasi- monitoring receiver carries out the cooperation of the first collaboration mode, dispatches 4 monitoring receivers 3 and carries out second with benchmark monitoring receiver
The cooperation that 2 monitoring receivers 3 carry out third collaboration mode with benchmark monitoring receiver is dispatched in the cooperation of collaboration mode.
After dispatching monitoring scheme B formulations, the cooperative approach of monitoring processor 2 is formulated module 21 and is carried out to monitoring receiver 3
Selection with grouping, label with it is synchronous.Then monitoring order C is issued to monitoring receiver 3ij=[fij,fij′,fij"], i=1,2,
3, specifically, show that the monitoring order to monitoring receiver 3 is as follows according to scheme elaboration：
C0=[100MHz, 100MHz, 200MHz]
C11=[150MHz, 100MHz, 200MHz]
C21=[110MHz, 100MHz, 200MHz]
C22=[120MHz, 100MHz, 200MHz]
C23=[120MHz, 100MHz, 200MHz]
C24=[120MHz, 100MHz, 200MHz]
C31=C32=C0=[100MHz, 100MHz, 200MHz]
Monitoring receiver 3 starts to execute the monitoring order after receiving monitoring order, and is on time back to frequency spectrum data
Processor is monitored, processor carries out frequency spectrum data different splicings according to different collaboration modes, then will handle well
Frequency spectrum data be back to monitoring center.
Above-described, only presently preferred embodiments of the present invention is not limited to the scope of the present invention, of the invention is upper
Stating embodiment can also make a variety of changes.Made by i.e. every claims applied according to the present invention and description
Simply, equivalent changes and modifications fall within the claims of patent of the present invention.The not detailed description of the present invention is
Routine techniques content.
Claims (9)
1. a kind of distributed frequency spectrum synergic monitoring system, including a monitoring and controlling center (1) for issuing monitoring task A and more
A acquisition and the monitoring receiver (3) for returning frequency spectrum data, which is characterized in that
A monitoring processor (2), the monitoring processor are connected between the monitoring and controlling center (1) and monitoring receiver (3)
(2) include that cooperative approach formulates module (21) and data analysis and processing module (22)；
The cooperative approach formulates requirement of the module (21) according to monitoring task A, formulates scheduling monitoring scheme B and multiple monitorings life
Enable C, and the monitoring receiver (3) is selected according to scheduling monitoring scheme B, is grouped, label, synchronization, the monitoring connects
Receipts machine (3) orders C to acquire frequency spectrum data according to the monitoring；The Data Analysis Services module (22) receives and research and application connects
The frequency spectrum data of receipts machine (3) passback, and signal data by analysis is back to monitoring and controlling center (1).
2. distributed frequency spectrum synergic monitoring system according to claim 1, which is characterized in that the monitoring processor (2)
Further include communication module (23), the cooperative approach formulates module (21) and receives monitoring task A by the communication module (23)
C is ordered with monitoring is issued, and the Data Analysis Services module (22) passes through the communication module (23) and receives monitoring receiver
(3) data described in the frequency spectrum data returned and passback by analysis.
3. a kind of distributed frequency spectrum monitoring method, which is characterized in that including：
S1：One distributed frequency spectrum synergic monitoring system according to claim 1 or 2 is provided；
S2：Monitoring and controlling center (1) generates according to the instruction of user and issues monitoring task A；
S3：According to the requirement of monitoring task A, the cooperative approach of monitoring processor (2) formulates module (21) and formulates scheduling monitoring side
Case B and monitoring order C；
S4：Cooperative approach formulate module (21) multiple monitoring receivers (3) are selected according to the scheduling monitoring scheme B,
Grouping, label, synchronization；
S5：Monitoring receiver (3) orders C to acquire frequency spectrum data according to the monitoring, and frequency spectrum data is back to data analysis
Processing module (22)；
S6：Data Analysis Services module (22) receives and the frequency spectrum data of research and application receiver (3) passback, while will be through excessive
The signal data of analysis is back to monitoring and controlling center (1)；
S7：Monitoring and controlling center (1) stores the signal data received with display；
S8：Monitoring task A terminates；
Wherein, the scheduling monitoring scheme B includes：Selection one benchmark monitoring receiver of setting, monitoring processor (2) is dispatched more
A monitoring receiver (3) cooperates with the benchmark monitoring receiver in the first collaboration mode and/or the second collaboration mode and/or third
It cooperates under pattern.
4. distributed frequency spectrum monitoring method according to claim 3, which is characterized in that first collaboration mode is frequency dividing
It is to cooperate with Splicing model with frequency, and the third collaboration mode is synchronous with frequency to cooperate with scan pattern, second collaboration mode
Merging patterns.
5. distributed frequency spectrum monitoring method according to claim 4, which is characterized in that with benchmark monitoring receiver first
The quantity of the monitoring receiver (3) to cooperate under collaboration mode is m, if Tr>=T, then m=0, conversely,Wherein, TrMonitoring method is required to complete a full band scan required shortest time for monitoring task A, it is single
Position is s；T is that single monitoring receiver (3) carries out the required duration of full band scan, unit s；
The quantity of the monitoring receiver (3) to cooperate under the second collaboration mode with benchmark monitoring receiver is l, such as
Fruit Wr>=w, then l=0, conversely,Wherein, WrIt is single for the frequency resolution of the desired monitoring methods of monitoring task A
Position is Hz；W is the spectral resolution of monitoring receiver (3), unit Hz；
The quantity of the monitoring receiver (3) to cooperate under third collaboration mode with benchmark monitoring receiver (3) is p
It is a, if Sr>=s, then p=0, conversely,Wherein, SrTo monitor wanting for sensitivity of the task A to monitoring method
It asks, unit dB；S is the sensitivity of monitoring receiver (3), unit dB.
6. distributed frequency spectrum monitoring method according to claim 5, which is characterized in that the monitoring receiver (3) it is total
Number is at least m+l+p+1.
7. distributed frequency spectrum monitoring method according to claim 5, which is characterized in that the monitoring order C includes Cij,
Wherein CijIndicate the monitoring order that is issued to the monitoring receiver (3) marked as ij, ij then indicates the of the i-th collaboration mode
J monitoring receiver (3), i=1,2,3, fijIndicate the scanning initial frequency of monitoring receiver (3), fij' indicate monitoring task A
The lower limit of middle scan frequency, fij" indicate the upper limit of scan frequency in monitoring task A.
8. distributed frequency spectrum monitoring method according to claim 3, which is characterized in that multiple monitoring receivers described in S4
(3) selection carried out is specified by monitoring processor (2) by way of generating random number, or according to monitoring receiver
(3) remaining capacity or location distribution is specified by monitoring processor (2).
9. distributed frequency spectrum monitoring method according to claim 3, which is characterized in that grouping and label described in S4 be with
The mode for generating random number is randomly assigned or is allocated according to the remaining capacity of monitoring receiver (3) specified.
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