CN106255125B - A kind of spectrum regulatory system - Google Patents
A kind of spectrum regulatory system Download PDFInfo
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- CN106255125B CN106255125B CN201610880463.0A CN201610880463A CN106255125B CN 106255125 B CN106255125 B CN 106255125B CN 201610880463 A CN201610880463 A CN 201610880463A CN 106255125 B CN106255125 B CN 106255125B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The present invention relates to a kind of spectrum regulatory system, it includes：Multiple electromagnetic spectrum information sensors, one or more Node stations, data server and information management terminal.The advantage of the spectrum regulatory system of the present invention compared with prior art is, more preferable balance is reached between perceived accuracy, computation complexity and each node communication overhead, using to frequency range primary user's utilization rate statistical information, i.e. the distributed intelligence of history detection probability is modified to the thresholding of collaborative perception system, does not have the complexity and each node communication overhead that excessively increase thresholding calculating while perceived accuracy is increased substantially.This causes system to keep each sensor and the relatively low energy expenditure of Node station while can realize to frequency spectrum High Precision Monitor, so as to reduce the cost of whole monitoring network.
Description
Technical field
The present invention usually relates to wireless communication technology, and a kind of more specifically it relates to spectrum regulatory system.
Background technology
Wireless sensor network is by disposing a large amount of static or mobile sensor nodes in monitoring range, with many
Jump, Ad hoc mode carries out real-time, collaboratively perception, collection, processing, and transmit to target to the object information in overlay area
A kind of cordless communication network of user.The wireless sensor network monitored towards electromagnetic spectrum is that one kind typical case of Sensor Network should
With all being had broad application prospects in military field and civilian aspect.
It is under normal circumstances the preferred working frequency range of wireless sense network without the industry authorized, science, the free frequency range of medical treatment,
Such as 2.4GHz.In the division of usual radio frequency, limited public frequency band needs to support fixed, mobile, radio simultaneously
Positioning etc. authorizes main business.At the same time, with various, bluetooth, etc. wireless communication technology extensive use, such public frequency band
Day hastens towards saturation, and the interference and coexistence problems between various types of wireless communication systems are on the rise.There are some researches show in the influence of network
Under, while the interruption rate and retransmission rate of the network of work substantially rise, the life cycle of network is also decreased obviously.As can be seen here,
Interference and coexistence problems between the various wireless communication system of public frequency band have turned into restriction wireless sensor network future development
Bottleneck.
On the other hand, conventional wireless sensing net node working frequency range is closely related with its radio frequency chip specification.For cost
Consider, sensor node Chip scale after dispatching from the factory just has been fixed, typically can not arbitrarily changed.Therefore, conventional wireless Sensor Network
Frequency range used is also fixed allocation, if because application requirement needs to change working frequency range, sensor node need to be just changed on a large scale.This
Outside, under some frequency spectrum resources very nervous specific communication environment such as Battle Field Electromagnetic, traditional sensors network is easier
Disturbed by specific aim and cause network paralysis.
The research report in U.S.'s Berkeley is wireless research center shows, with unauthorized frequency range frequency spectrum resource nervous feelings further
Shape is on the contrary, some authorize the excellent low frequency band of frequency range, particularly propagation characteristic and are underutilized.Start for this people
Cognitive radio technology is studied, to break through the limitation of traditional static frequency spectrum distribution, realizes that the dynamic for authorizing frequency spectrum is shared to improve
Spectrum utilization efficiency.On this basis, sensor network researcher proposes to introduce cognitive radio technology, sets up and is adapted to wirelessly
The Dynamic Spectrum Management mechanism of Sensor Network, realizes that dynamically shared and orderly competition accesses frequency spectrum resource to sensor node, enhancing is passed
Wireless sense network unite to the adaptability of spectral change, already one of crucial direction as wireless sense network Future Development.
Frequency spectrum perception is to discriminate between one of traditional wireless sensor networks and the major function of wireless authentication sensing network, is also
The core of spectrum regulatory system.The cognition technology of current comparative maturity is generally single node cognition technology, such as matched filter sense
Know technology, energy measuring cognition technology, interference temperature detection senses technology and cyclostationary characteristic cognition technology.But for
During the network topology that cognitive sensor is continually changing, these technologies can not be simply directly applied on sensor limited in one's ability.
Those skilled in the art need to develop the common detection senses technology of multinode, specifically how in perceived accuracy, computation complexity
Seek balance between each node communication overhead, be the problem that those skilled in the art face.
The content of the invention
In order to solve the problem of prior art feels inadequate precision, high computation complexity and each big node communication overhead,
It is an object of the invention to provide a kind of spectrum regulatory system, it is characterised in that including：
Multiple electromagnetic spectrum information sensors, it is used to gather electromagnetic spectrum information, launches what is gathered to wireless network
Electromagnetic spectrum information, and receive in wireless network and electromagnetic spectrum information and store electromagnetic spectrum information；
One or more Node stations, its be used to gathering, handle and store adjacent electromagnetic spectrum information sensor pass through it is wireless
The electromagnetic spectrum information that network launches go out, and launch to wireless network stored electromagnetic spectrum information；
Data server, the electromagnetic spectrum that it is used to gathering, handled and storage node machine is launched by wireless network is believed
Breath, generates the history detection probability distributed intelligence of each frequency range, and to Node station launch stored electromagnetic spectrum information and
The history detection probability distributed intelligence of each frequency range；
Information management terminal, it is used to have access to the electromagnetic spectrum information stored in data server；
Experience, gather and handle wireless network by way of mixing cooperation between the electromagnetic spectrum information sensor to cover
Frequency spectrum in cover area, electromagnetic spectrum information sensor is set with two and judges thresholding ξ1And ξ2, when the frequency band signals detected
Energy be less than ξ1When, electromagnetic spectrum information sensor judges that primary user's signal is not present in the frequency range, when the frequency range letter detected
Number energy be more than ξ2When, electromagnetic spectrum information sensor judges that the frequency range has primary user's signal, when the frequency range letter detected
Number energy in ξ1And ξ2Between when, the energy information of the frequency band signals is sent to neighbouring section by electromagnetic spectrum information sensor
Point machine, as the energy information comprehensive descision of the frequency band signals collected by Node station integrates other electromagnetic spectrum information sensors；
Wherein,
N is that spectrum information samples number,
Q-1For functionInverse function,
PfaFor false-alarm probability,
σnFor actual noise power,
δnFor virtual noise power,
PSHistory detection probability for institute's frequency measurement section is distributed,
PS(t) it is the history detection probability of institute's frequency measurement section in the t periods；
The history detection probability distributed intelligence is periodically issued by data server, and Node station receives new history inspection
Broadcasted after surveying probability distribution information to the electromagnetic spectrum information sensor near it.
Further, the wireless network is 3G, GPRS or WI-FI.
Further, when the Node station receives the energy of the frequency band signals of L neighbouring electromagnetic spectrum information sensor
Measure after information, by the energy information generator matrix received and draw corresponding covariance matrix, and obtain the covariance matrix
The maximum and minimum value of characteristic value, draw the ratio of maximum and minimum value, and Node station calculates the ratio and Node station
Threshold value λ is judged, when the ratio is less than threshold value λ, then Node station judges that primary user's signal is not present in the frequency range, on the contrary
Then judge that the frequency range has primary user's signal；
Wherein,
N is that spectrum information samples number,
L is electromagnetic spectrum information sensor number,
PfaFor false-alarm probability,
PSHistory detection probability for institute's frequency measurement section is distributed,
PS(t) it is the history detection probability of institute's frequency measurement section in the t periods,
F-1For the inverse function of the Trancy-Widom distribution functions being distributed.
Further, the history detection probability distributed intelligence is periodically issued by data server, and Node station is received
It can be broadcasted after new history detection probability distributed intelligence to the electromagnetic spectrum information sensor near it.
Further, the Node station to multiple electromagnetic spectrum information sensors are broadcasted near described when using distribution
Tree-shaped Radio Broadcasting Agreements.Node is, it is necessary to first set up the broadcast tree of oneself before being broadcasted, and broadcast tree one is set up, and node can
To be used always in broadcast behind, if network topology structure changes, it is only necessary to carry out local updating, without
Re-establish.It is as follows that what broadcast was set specifically sets up process：
(1) node of transmission broadcast packet is needed, the neighbor node of oneself of random selection one sends broadcast training package, neighbours
Node is received after broadcast training package, is replied and is confirmed bag, and in bag is confirmed, informs whether this node of sending node is to receive first
This broadcast packet；
(2) the confirmation bag that sending node analysis is received, if receiving node is to receive this broadcast training package first, just will
Receiving node is added in the transmission sequence of oneself, if not receiving first, illustrates the own warp of receiving node from other nodes
This broadcast training package is received, this node need not be added in the transmission sequence of oneself by sending node；
(3) receive broadcast training package node, take with sending node identical strategy, at random to the neighbor node of oneself
Broadcast message is forwarded, and sets up according to the confirmation of receiving node the transmission sequence on sending node of oneself, Zhi Daoxiang
All neighbor nodes have all forwarded broadcast training package；
(4) after first run training package is sent, sending node initiate again the second wheel broadcast training package, sending node first to
Oneself send the node in sequence and send broadcast training package, and the information for confirming bag according to receiving is adjusted to sending sequence,
I.e. when receiving node is to receive broadcast packet first, sending node is stayed in transmission sequence, if receiving node is not
This broadcast training package is received first, then will remove, all sent out when sending sequence interior nodes in its transmission sequence from oneself
Send after broadcast training package, then broadcast training package, and the information pair for confirming bag according to receiving are sent to remaining node in neighbor table
Send sequence to be adjusted, i.e., when receiving node is to receive broadcast training package first, sending node adds it to oneself
Transmission sequence in, if receiving node be not receive first this broadcast training package, the hair of oneself is not added it to
Send in sequence；
(5) receive broadcast training package node, take with sending node identical strategy, first to oneself send sequence in
Node send broadcast training package, and the transmission sequence of oneself is adjusted according to the confirmation received, then again to hair
Send the neighbor node beyond sequence to send broadcast training package, and the transmission sequence of oneself is carried out according to the confirmation received
Adjustment；
(6) node that sending node is repeatedly sent in broadcast training package, network is repeatedly adjusted to the transmission sequence of oneself
Whole, the transmission sequence of final each node can gradually tend towards stability, and so, the node in network is with the transmission sequence of oneself
Node be child node, set up a broadcast tree on sending node.
Further, the electromagnetic spectrum information sensor has solar charging device.Using it is solar powered can be with
Improve the stability of sensor, reduction monitoring device is built a station the requirement of environment so that a large amount of build a station is possibly realized.
Further, the data server is according to the electromagnetic spectrum information processing collected and generates Monitoring Data history
Archives, early warning daily record, emission parameter and administration information.Monitoring Data historical archives are long-term, continuous, continual
Stand or signal intensity monitoring record and the conclusion of statistical analysis and judgement on this basis, common example has degree (day
Degree, moon degree, year degree, specify duration degree etc.), emissivity (normal transmission proportion), fault rate (hair
Penetrate failure proportion), jamming rate (interference proportion) K line charts etc..For a long time, continuous, continual monitoring is by counting, dividing
Analysis, judgement conclusion, will obtain a series of electromagnetism event, such as interference incident, event of failure, these events will be recorded one by one
Among early warning daily record.The user that has the right can ask for early warning daily record, client from server and can automatically generate early warning daily record, pass through
Cloud printer can be with automatic printing early warning daily record.In the present invention, emission parameter includes centre frequency, frequency shift (FS), 3dB occupancy
Bandwidth, maximum level, minimum levels, average level, modulation system and modulation degree.In the present invention, administration information includes
Examination and approval authority, using unit, approval frequency, use scope, useful life, delineation of activities, approval bandwidth, network usage.
Further, described information management terminal is selected from LED screen, laptop computer, tablet personal computer, cloud printer, mobile phone.
PfaFalse-alarm probability is the value set when spectrum systems are built, usually, PfaScope is between 0.01-0.1, specifically
Value depends on the number of sensor.As a rule, the number of sensor is more, and the value of false-alarm probability can be higher.
The spectrum regulatory system advantage compared with prior art of the present invention is, perceived accuracy, computation complexity and
More preferable balance is reached between each node communication overhead, using to frequency range primary user's utilization rate statistical information, i.e. history detection is general
Rate distributed intelligence is modified to the thresholding of collaborative perception system, is not increased excessively while perceived accuracy is increased substantially
Complexity and each node communication overhead that thresholding is calculated.This causes system while can realize to frequency spectrum High Precision Monitor
Each sensor and the relatively low energy expenditure of Node station can also be kept, so as to reduce the cost of whole monitoring network.
Brief description of the drawings
Fig. 1 is monitored the history obtained by one embodiment of the present of invention and tests probability distribution；
Fig. 2 is the network topology of one embodiment of the present of invention；
Fig. 3 is the network topology of the preferred embodiment of the present invention.
Embodiment
The present invention is done in this part to some technical terms in the present invention further to be explained, and provides some effects
Fruit preferably embodiment.
As described in front portion of the invention, PSIt is according in special frequency channel frequency spectrum for the history detection probability distribution of institute's frequency measurement section
The probability cumulative statistics distribution that primary user's signal occursMonitor duration coefficient TsAnd statistical correlation coefficients R integrates what is drawn.
I.e.
0≤Ts≤1,0≤R≤1。
For a simplified example, the electromagnetic spectrum information sensor in certain region is fixed daily monitored A every two hours
Whether with the presence of primary user's signal in frequency range frequency spectrum, continuous monitoring integrates each sensor electromagnetic spectrum information after 7 days is obtained
The probability statistical distribution of top half in Fig. 1, continuous monitoring obtains the probability statistical distribution of the latter half in Fig. 1 after 30 days.One
As for, the probability distribution of primary user's signal tends towards stability with monitoring duration, and this is due to that primary user is that the mandate of frequency range is used
Family, its communication activity depends primarily on primary user's self-demand and determined without considering other presence from user.Cause
This, monitoring duration it is longer, the probability statistical distribution drawn will closer to primary user authentic activity, monitor duration coefficient
It will more level off to 1, i.e., judge that the accuracy of primary user's authentic activity can be higher by probability statistical distribution.
However, in monitoring process, there is also another situation, i.e. primary user's activity and start in monitoring process
It is not inconsistent with probability statistical distribution.The reason for this situation occur is probably due to primary user's change or the change of primary user's communication activity
More cause.When this occurs, the probability statistical distribution certainty and probability before of new electromagnetic spectrum information accumulation
The degree of correlation that statistical distribution has kind of the statistical distribution of larger difference, i.e., two is not high.When frequency spectrum detection system senses to statistical correlation
When degree is reduced to threshold value set in advance, the mechanism that the distribution of history detection probability is reset then is triggered, i.e., first probability statistics
Distribution is deleted zero, and new electromagnetic spectrum information to form new probability statistical distribution by being accumulated.
In general, presently disclosed spectrum regulatory system is when for civil areas such as industry, agriculturals, its electromagnetism
Spectrum information Sensor monitoring period t, or monitoring interval, are maintained at 1-2 hours, its statistical correlation degree threshold value is set in 0.7-
In the range of 0.85, you can obtain very high perceived accuracy.Such as should in the application of military or special medical for other specific uses
Spectrum regulatory system then needs the perceived accuracy more increased, and this can be by shortening monitoring interval and/or improving statistics phase
Pass degree threshold value reaches.Certainly, each inter-node communication band will necessarily be given by shortening monitoring interval and/or improving statistical correlation degree threshold value
Carry out more expenses, so as to increase the cost and unstability of spectrum regulatory system.
Embodiment 1
As shown in Fig. 2 embodiment 1 have multiple electromagnetic spectrum information sensors 111,112,113,...And 11N, it is used
In collection electromagnetic spectrum signal, launch gathered electromagnetic spectrum information to wireless network, and receive electromagnetism in wireless network
Spectrum information and storage information；
One Node station 121, it, which is used to gathering, handle and store adjacent electric frequency spectrum magnetic information sensor, passes through wireless network
The electromagnetic spectrum information launched, and launch to wireless network stored information；
Data server 130, the electromagnetic spectrum that it is used to gathering, handled and storage node machine is launched by wireless network
Information, generates the history detection probability distributed intelligence of each frequency range, and launch stored information and each frequency to Node station
The history detection probability distributed intelligence of section；
Information management terminal 140, it is used to have access to the information stored in data server 130.
Embodiment 2
As shown in figure 3, embodiment 2 have multiple electromagnetic spectrum information sensors 211,212,213,...And 21N, it is used
In collection electromagnetic spectrum signal, launch gathered electromagnetic spectrum information to wireless network, and receive electromagnetism in wireless network
Spectrum information and storage information；
Two Node stations 221 and 222, it, which is used to gathering, handle and store adjacent electric frequency spectrum magnetic information sensor, passes through nothing
The electromagnetic spectrum information that gauze network is launched, and launch to wireless network stored information；
Data server 230, the electromagnetic spectrum that it is used to gathering, handled and storage node machine is launched by wireless network
Information, generates the history detection probability distributed intelligence of each frequency range, and launch stored information and each frequency to Node station
The history detection probability distributed intelligence of section；
Information management terminal 240, it is used to have access to the information stored in data server 230.
Each electromagnetic spectrum information sensor according to default monitoring period of time since rest period revive and experience, gather and
Handle the frequency spectrum status information in its overlay area.When the energy of the frequency band signals detected is less than its pre-determined threshold ξ1When, should
Electromagnetic spectrum information sensor judges that institute frequency measurement section is not present primary user's signal, and this result is locally-stored and going through all over each
Concentrated after frequency range and be sent to Node station；When the energy of the frequency band signals detected is more than its pre-determined threshold ξ2When, electromagnetic spectrum letter
Breath sensor judges that institute frequency measurement section has primary user's signal, and this result is locally-stored and hair is concentrated after each frequency range going through
Give Node station；When the energy of the frequency band signals detected is in ξ1And ξ2Between when, electromagnetic spectrum information sensor is then by the frequency range
The energy of signal is simultaneously locally-stored and be sent to Node station going through to concentrate after each frequency range this result, and it is integrated by Node station
Informix collected by his electromagnetic spectrum information sensor judges.
After Node station 221 or 222 receives the band information of L neighbouring electromagnetic spectrum information sensor, on the one hand
Store the band information locally judged by each electromagnetic spectrum information sensor, you can with by each electromagnetic spectrum information sensor
Assert whether frequency range has the information of primary user at once；On the other hand, for the energy information of the frequency range received, by the letter received
Breath generator matrix simultaneously draws corresponding covariance matrix, and obtain the maximum and minimum value of the covariance matrix characteristic value, obtains
Go out the ratio of maximum and minimum value, Node station is judged the threshold value λ that the ratio is calculated with Node station, when the ratio is small
When threshold value λ, then Node station judges that primary user's signal is not present in the frequency range, on the contrary then judge that the frequency range has primary user's letter
Number.After Node station travels through all frequency ranges, all band informations are locally stored and data server 230 is sent to.
Above-mentioned matrix X is as follows, wherein xl(t) be l (l=1,2 ..., L) individual electromagnetic spectrum information sensor when
The signal sampling that t (t=1,2 ..., T) is received is carved,
Its corresponding covariance matrix RXObtained by following formula, wherein subscript H is the conjugate transposition computing of matrix,
RX(T)=(1/T) XXH。
The electromagnetism frequency that data server 230 is gathered, handled and storage node machine 221 and 222 is launched by wireless network
Spectrum information, generates history detection probability according to these information and is distributed PSAnd its periodicity is distributed to Node station 221 and 222.Section
Point machine 221 and 222 is according to the history detection probability distribution P newly issuedSIts threshold value λ is adjusted in real time, and the history is detected general
Rate is distributed PSBy using distributed tree-shaped Radio Broadcasting Agreements broadcast to each electromagnetic spectrum information sensor 211,212,213,...With
21N, each electromagnetic spectrum information sensor is distributed P according to the history detection probability newly issuedSIts threshold value ξ is adjusted in real time1With
ξ2。
Data server 230 according to the electromagnetic spectrum information processing that collects and can also generate Monitoring Data history shelves
Case, early warning daily record, emission parameter and administration information.Monitoring Data historical archives are long-term, continuous, the continual stations
Or signal intensity monitoring record and the conclusion of statistical analysis and judgement on this basis, common example has degree, and (day accounts for
Expenditure, moon degree, year degree, specify duration degree etc.), emissivity (normal transmission proportion), fault rate (transmitting
Failure proportion), jamming rate (interference proportion) K line charts etc..For a long time, continuous, continual monitoring is by counting, dividing
Analysis, judgement conclusion, will obtain a series of electromagnetism event, such as interference incident, event of failure, these events will be recorded one by one
Among early warning daily record.The user that has the right can ask for early warning daily record, client from server and can automatically generate early warning daily record, pass through
Cloud printer can be with automatic printing early warning daily record.In the present invention, emission parameter includes centre frequency, frequency shift (FS), 3dB occupancy
Bandwidth, maximum level, minimum levels, average level, modulation system and modulation degree.In the present invention, administration information includes
Examination and approval authority, using unit, approval frequency, use scope, useful life, delineation of activities, approval bandwidth, network usage.
The operating personnel of spectrum regulatory system can be had access in data server 230 by information management terminal 240 and be stored
Information.Information management terminal 240 is selected from LED screen, laptop computer, tablet personal computer, cloud printer, mobile phone.
Although the principle of the present invention has specific descriptions herein, it will be appreciated by those of skill in the art that this
It is individual to describe only to carry out by way of example, and not as the limitation on the scope of the present invention.Except shown herein
Outside the exemplary embodiment of description, pass through the modification and replacement of one of ordinary skill in the art within the scope of the invention
Other embodiment, be regarded as within the scope of the invention.
Claims (7)
1. a kind of spectrum regulatory system, it is characterised in that including：
Multiple electromagnetic spectrum information sensors, it is used to gather electromagnetic spectrum information, launches gathered electromagnetism to wireless network
Spectrum information, and receive in wireless network and electromagnetic spectrum information and store electromagnetic spectrum information；
One or more Node stations, it, which is used to gathering, handle and store adjacent electromagnetic spectrum information sensor, passes through wireless network
The electromagnetic spectrum information launched, and launch to wireless network stored electromagnetic spectrum information；
Data server, the electromagnetic spectrum information that it is used to gathering, handled and storage node machine is launched by wireless network is raw
Launch stored electromagnetic spectrum information and each frequency into the history detection probability distributed intelligence of each frequency range, and to Node station
The history detection probability distributed intelligence of section；
Information management terminal, it is used to have access to the electromagnetic spectrum information stored in data server；
Experience, gather and handle area of wireless network coverage by way of mixing cooperation between the electromagnetic spectrum information sensor
Frequency spectrum in domain, electromagnetic spectrum information sensor is set with two and judges thresholding ξ1And ξ2, when the energy of the frequency band signals detected
Amount is less than ξ1When, electromagnetic spectrum information sensor judges that primary user's signal is not present in the frequency range, when the frequency band signals detected
Energy is more than ξ2When, electromagnetic spectrum information sensor judges that the frequency range has primary user's signal, when the frequency band signals detected
Energy is in ξ1And ξ2Between when, the energy information of the frequency band signals is sent to neighbouring Node station by electromagnetic spectrum information sensor,
As the energy information comprehensive descision of the frequency band signals collected by Node station integrates other electromagnetic spectrum information sensors；
Wherein,
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N is that spectrum information samples number,
Q-1For functionInverse function,
PfaFor false-alarm probability,
σnFor actual noise power,
δnFor virtual noise power,
PSHistory detection probability for institute's frequency measurement section is distributed,
PS(t) it is the history detection probability of institute's frequency measurement section in the t periods；
The history detection probability distributed intelligence is periodically issued by data server, and it is general that Node station receives new history detection
Broadcasted after rate distributed intelligence to the electromagnetic spectrum information sensor near it.
2. spectrum regulatory system according to claim 1, it is characterised in that：The wireless network is 3G, GPRS or WI-
FI。
3. spectrum regulatory system according to claim 1, it is characterised in that：L near the Node station is received is individual
After the energy information of the frequency band signals of electromagnetic spectrum information sensor, by the energy information generator matrix received and draw corresponding
Covariance matrix, and obtain the maximum and minimum value of the covariance matrix characteristic value, draw the ratio of maximum and minimum value
Value, Node station is judged the threshold value λ that the ratio is calculated with Node station, when the ratio is less than threshold value λ, then Node station
Judge that primary user's signal is not present in the frequency range, it is on the contrary then judge that the frequency range has primary user's signal；
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</mrow>
<mfrac>
<mn>2</mn>
<mn>3</mn>
</mfrac>
</msup>
<msup>
<mrow>
<mo>(</mo>
<mi>N</mi>
<mi>L</mi>
<mo>)</mo>
</mrow>
<mfrac>
<mn>1</mn>
<mn>6</mn>
</mfrac>
</msup>
</mfrac>
<msup>
<mi>F</mi>
<mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>P</mi>
<mrow>
<mi>f</mi>
<mi>a</mi>
</mrow>
</msub>
<mo>)</mo>
</mrow>
<msqrt>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>+</mo>
<msub>
<mi>P</mi>
<mi>S</mi>
</msub>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
<mo>)</mo>
</mrow>
</msqrt>
<mo>&rsqb;</mo>
<mo>,</mo>
</mrow>
1
N is that spectrum information samples number,
L is electromagnetic spectrum information sensor number,
PfaFor false-alarm probability,
PSHistory detection probability for institute's frequency measurement section is distributed,
PS(t) it is the history detection probability of institute's frequency measurement section in the t periods,
F-1For the inverse function of the Trancy-Widom distribution functions being distributed.
4. spectrum regulatory system according to claim 3, it is characterised in that：The Node station is to multiple electricity near described
Using distributed tree-shaped Radio Broadcasting Agreements when magnetic spectrum information sensor is broadcasted.
5. spectrum regulatory system according to claim 1, it is characterised in that：The electromagnetic spectrum information sensor has too
Positive energy charging device.
6. spectrum regulatory system according to claim 1, it is characterised in that：The data server is according to the electricity collected
Magnetic spectrum information handles and generates Monitoring Data historical archives, early warning daily record, emission parameter and administration information.
7. spectrum regulatory system according to claim 1, it is characterised in that：Described information management terminal is selected from LED screen, hand
Carry computer, tablet personal computer, cloud printer and mobile phone.
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