CN105577303B - A kind of apparatus and method that illegal frequency space-time is screened - Google Patents
A kind of apparatus and method that illegal frequency space-time is screened Download PDFInfo
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- CN105577303B CN105577303B CN201510943649.1A CN201510943649A CN105577303B CN 105577303 B CN105577303 B CN 105577303B CN 201510943649 A CN201510943649 A CN 201510943649A CN 105577303 B CN105577303 B CN 105577303B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/27—Monitoring; Testing of receivers for locating or positioning the transmitter
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Abstract
The present invention relates to a kind of apparatus and method that illegal frequency space-time is screened.The device that the illegal frequency space-time is screened, including mster-control centre and multiple acquisition terminals；The acquisition terminal includes frequency search module, sound identification module and the Beidou positioning module being connect respectively with control module.Control module is the control centre of acquisition terminal, is responsible for the overall planning of acquisition terminal.The device that illegal frequency space-time of the present invention is screened judges whether radio station is pirate radio according to radio content, and accuracy is high, solves the problems, such as to be difficult to find camouflage radio station in existing method, practicability is high.
Description
Technical field
The present invention relates to a kind of apparatus and method that illegal frequency space-time is screened, and belong to the Big Dipper positioning of speech recognition sum
Technical field.
Background technology
The problem of pirate radio long-term existence, remain incessant after repeated prohibition, criminal pass through private frame radio station, play drug, health products
Distribution message.Pirate radio not only upsets society, economic public order but also the normal use for influencing dedicated frequency section, causes
The loss of national economy.
The method of existing search pirate radio, it is most of to start with from frequency, by the frequency searched and legal frequency
Rate list is compared or the filter by being provided with appropriate frequency bands range, finds illegal frequency station.These illegal electricity
The searching method of platform is started in terms of frequency, and there are many disadvantages.The legal frequency for example, many pirate radios disguise oneself as
It plays out, it is difficult to be found.
Chinese patent CN203951480U discloses a kind of network-based illegal radio station FM monitoring system.The system includes
Multiple terminal and servers；When the emission spectrum for occurring not checking and approving or putting on record, by the channel labelling, by frequency and current letter
Number intensity, the information such as time tag are reported to server and substantially position transmitting position and the coverage area of the frequency.It opens simultaneously
The demodulation function for opening the larger terminal of signal strength records the audio of pirate radio, facilitates investigation and evidence collection and at the later stage
Reason.The system is to screen pirate radio by the method for frequency comparison, and can only substantially position the transmitting position of the frequency, reliably
Property and accuracy are low.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of device that illegal frequency space-time is screened.The device passes through language
Sound identification technology identifies the content in radio station, identifies whether radio station is pirate radio according to the content in radio station, accuracy and can
By property higher.
The present invention also provides a kind of illegal frequency space-time Zhen method for distinguishing is carried out using above-mentioned apparatus.
Technical scheme is as follows：
A kind of device that illegal frequency space-time is screened, including mster-control centre and multiple acquisition terminals；The acquisition terminal
Including frequency search module, sound identification module and the Beidou positioning module being connect respectively with control module.Control module is to adopt
Collect the control centre of terminal, is responsible for the overall planning of acquisition terminal.
The frequency search module includes input circuit, mixting circuit, local oscillator, intermediate frequency amplifier, detecting circuit
And audio-frequency amplifier.Frequency search module carries out frequency search and the audio signal searched is transported to sound identification module.
The input circuit is shunt-resonant circuit, has frequency-selecting effect.
Sound identification module receives the audio signal, and audio signal is identified as letter signal, and by letter signal and
The frequency in radio station uploads to mster-control centre.
The control module includes MCU, signal strength measurement module, deflection measurement module, communication module and storage mould
Block；Communication module is communicated by short message (SMS) and grouped data (GPRS).MCU is the control centre of acquisition terminal, control
The stable operation of frequency search module, sound identification module and Beidou positioning module processed.Signal strength measurement module measures illegal
The signal strength in radio station.Deflection measurement module is used to measure the deflection between acquisition terminal and pirate radio.Communication module
The communication being responsible between acquisition terminal and mster-control centre.Memory module is to the signal strength of pirate radio, the position of acquisition terminal
It sets, the data such as deflection between acquisition terminal and pirate radio are stored.
The mster-control centre includes server, computing module, mster-control centre's communication module, total memory module and comparison
Database.Mster-control centre judges whether radio station is pirate radio, and assigns instruction to all acquisition terminals.Server assigns phase
Close instruction, the operation in the mster-control centre that makes overall planning.Computing module carries out algorithm calculating, when communication module is received from acquisition
Terminal, the location information of deflection and acquisition terminal between the signal strength of pirate radio, acquisition terminal and pirate radio
When, computing module is calculated according to certain algorithm, calculates the location information of pirate radio, and carry out on the electronic map
Display.Total memory module is the place that mster-control centre carries out information storage, the information sent of storage acquisition terminal and total
The operating status of control centre's modules.
Preferably, the Beidou positioning module includes Big Dipper generation chip and Beidou II chip.Big Dipper generation chip is logical
Low noise amplification, power amplification, Up/Down Conversion and the Base-Band Processing of Big Dipper short message receiving and transmitting signal are crossed, realizes that Big Dipper short message is received
Hair and active location function.Beidou II chip realizes the passive location as GPS, is optimized using Kalman filtering and is calculated
Method can keep outstanding acquisition and tracking ability under various complex environments, export continuous reliable positioning result.
Preferably, the number of the acquisition terminal is 3-10.
Preferably, the control module further includes power supply and power management chip.The acquisition terminal uses cruising ability
Strong and volume and the small power supply of quality.Power management chip ensures device work by controlling the power supply break-make of each module
Make under the pattern of low-power consumption, to reach the ability persistently continued a journey.
Preferably, the control module further includes working station indicator；Working station indicator is the LED of different colours
Lamp.Pass through the working condition of the LED light instruction device of different colours.
Preferably, the comparison data library includes lteral data library and frequency database.
A kind of illegal frequency space-time Zhen method for distinguishing, including steps are as follows：
1) self-check of device：Control module in each acquisition terminal checks coupled frequency search module, language
Whether sound identification module and Beidou positioning module work normally, if some above-mentioned module cisco unity malfunction, i.e. self-test is unsuccessful,
Mster-control centre is then reported to by communication module, and stops the work of the acquisition terminal；Otherwise self-test success, enters step
2)；
2) initiation culture search module searches for radio station, converts the radio signals in each radio station searched to audio signal
And it is transported to sound identification module；The audio signal in each radio station persistently plays one minute；
3) audio signal is identified as letter signal by sound identification module, and letter signal and pirate radio frequency are passed through
Communication module uploads to mster-control centre；
4) mster-control centre compares letter signal and pirate radio frequency with lteral data library and frequency database respectively,
Judge whether radio station is pirate radio；
If not finding pirate radio, mster-control centre's frequency of notification search module continues search for next radio station；
If it was found that pirate radio, each acquisition terminal by the signal strength of pirate radio, acquisition terminal and pirate radio it
Between deflection and acquisition terminal reporting position to mster-control centre, mster-control centre calculates pirate radio according to location algorithm
Position；Mster-control centre's frequency of notification search module continues search for next radio station.
Preferably, the method in frequency search block search radio station is to be scanned for successively toward high-frequency from low frequency, until
Maximum frequency values T.
Preferably, the location algorithm the specific steps are the signals for the pirate radio that more each acquisition terminal uploads
Intensity, and strongest three acquisition terminals of pirate radio signal strength are filtered out, it is uploaded using these three acquisition terminals illegal
The position of deflection and acquisition terminal between the signal strength in radio station, acquisition terminal and pirate radio, is calculated by triangulation location
Method obtains the position of pirate radio；
It is further preferred that the triangle polyester fibre algorithm includes that steps are as follows：
Assuming that the latitude and longitude coordinates of 3 strongest acquisition terminals of pirate radio signal strength are respectively (X1,Y1),(X2,
Y2),(X3,Y3)；The latitude and longitude coordinates of pirate radio are (Xμ,Yμ)；The distance of 3 acquisition terminals of pirate radio distance is respectively
R1,R2, and R3(R1,R2, and R3It is obtained respectively by rssi technology measurements；Rssi technologies are surveyed by the signal strength received
Signaling point is determined at a distance from receiving point, and then a kind of location technology of location Calculation is carried out according to corresponding data), then：
(X is solved using the maximum-likelihood method used in polygon estimationμ,Yμ)；
R1 2=(X1-Xμ)2+(Y1-Yμ)2
R2 2=(X2-Xμ)2+(Y2-Yμ)2
R3 2=(X3-Xμ)2+(Y3-Yμ)2
According to polygon estimation, can obtain：
Preferably, it is that the frequency is searched by the method that the radio signals in each radio station searched are converted into audio signal
Rope module selects radio signals by input circuit, is sent to mixting circuit, the high frequency constant amplitude wave generated by local oscillator
Signal is also fed into mixting circuit；Radio signals and high frequency constant amplitude wave signal are sent to intermediate frequency amplification successively after mixting circuit
Device and detecting circuit are amplified and amplitude detection, is exported finally by audio-frequency amplifier, obtains audio signal.
The usefulness of the invention is：
1, the device that illegal frequency space-time of the present invention is screened, judges whether radio station is illegal electricity according to radio content
Platform, accuracy is high, solves the problems, such as to be difficult to find camouflage radio station in existing method, practicability is high；
2, the device that illegal frequency space-time of the present invention is screened, using speech recognition technology；With traditional comparison frequency
The method for finding pirate radio is compared, high using speech recognition technology reliability, it can be found that the camouflage that frequency is packed
Radio station；
3, the device that illegal frequency space-time of the present invention is screened passes through the Big Dipper using Beidou II Satellite Navigation Technique
Two generation satellite positionings obtain the parameters such as longitude, latitude, speed of research object, to obtain acquisition terminal on the electronic map
The position of pirate radio is further found in position.
Description of the drawings
Fig. 1 is acquisition terminal structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram in mster-control centre of the present invention；
Fig. 3 is the work flow diagram of acquisition terminal of the present invention；
Fig. 4 is the work flow diagram of illegal frequency space-time screening device of the present invention.
Specific implementation mode
The present invention is described in detail with reference to embodiment and Figure of description, but not limited to this.
Embodiment 1
As shown in Figs 1-4.
A kind of device that illegal frequency space-time is screened, including mster-control centre and 5 acquisition terminals；The acquisition terminal packet
Include frequency search module, sound identification module and the Beidou positioning module being connect respectively with control module.Control module is acquisition
The control centre of terminal is responsible for the overall planning of acquisition terminal.
The frequency search module includes input circuit, mixting circuit, local oscillator, intermediate frequency amplifier, detecting circuit
And audio-frequency amplifier.Frequency search module carries out frequency search and the audio signal searched is transported to sound identification module.
The input circuit is shunt-resonant circuit, has frequency-selecting effect.
Sound identification module receives the audio signal, and audio signal is identified as letter signal, and by letter signal and
The frequency in radio station uploads to mster-control centre.
The control module includes MCU, signal strength measurement module, deflection measurement module, communication module and storage mould
Block；Communication module is communicated by short message (SMS) and grouped data (GPRS).MCU is the control centre of acquisition terminal, control
The stable operation of frequency search module, sound identification module and Beidou positioning module processed.Signal strength measurement module measures illegal
The signal strength in radio station.Deflection measurement module is used to measure the deflection between acquisition terminal and pirate radio.Communication module
The communication being responsible between acquisition terminal and mster-control centre.Memory module is to the signal strength of pirate radio, the position of acquisition terminal
It sets, the data such as deflection between acquisition terminal and pirate radio are stored.
The mster-control centre includes server, computing module, mster-control centre's communication module, total memory module and comparison
Database.Mster-control centre judges whether radio station is pirate radio, and assigns instruction to all acquisition terminals.Server assigns phase
Close instruction, the operation in the mster-control centre that makes overall planning.Computing module carries out algorithm calculating, when communication module is received from acquisition
Terminal, the location information of deflection and acquisition terminal between the signal strength of pirate radio, acquisition terminal and pirate radio
When, computing module is calculated according to certain algorithm, calculates the location information of pirate radio, and carry out on the electronic map
Display.Total memory module is the place that mster-control centre carries out information storage, the information sent of storage acquisition terminal and total
The operating status of control centre's modules.
Embodiment 2
The device that illegal frequency space-time is screened as described in Example 1, difference lies in the control module further includes electricity
Source and power management chip.The acquisition terminal is strong using cruising ability and volume adds lithium battery with the small solar energy of quality
Charge-discharge circuit.Power management chip ensures that device is operated in the mould of low-power consumption by controlling the power supply break-make of each module
Under formula, to reach the ability persistently continued a journey.
Embodiment 3
The device that illegal frequency space-time is screened as described in Example 1, difference lies in the control module further includes work
Make status indicator lamp；Working station indicator is the LED light of different colours.Pass through the work of the LED light instruction device of different colours
Make state.
Embodiment 4
The device that illegal frequency space-time is screened as described in Example 1, difference lies in the comparison data library includes text
Numerical data base and frequency database.
Embodiment 5
The device that illegal frequency space-time is screened as described in Example 1, difference lies in the Beidou positioning module includes
Big Dipper generation chip and Beidou II chip.Low noise amplification, work(of the Big Dipper generation chip by Big Dipper short message receiving and transmitting signal
Rate amplification, Up/Down Conversion and Base-Band Processing realize Big Dipper short message transmitting-receiving and active location function.Beidou II chip realizes
Passive location as GPS under various complex environments, can be kept outstanding and caught using Kalman filtering optimization algorithm
Ability of tracking is obtained, continuous reliable positioning result is exported.
Embodiment 6
The device that a kind of illegal frequency space-time using described in embodiment 1-5 is screened carries out the side that illegal frequency space-time is screened
Method, including steps are as follows：
1) self-check of device：Control module in each acquisition terminal checks coupled frequency search module, language
Whether sound identification module and Beidou positioning module work normally, if some above-mentioned module cisco unity malfunction, i.e. self-test is unsuccessful,
Mster-control centre is then reported to by communication module, and stops the work of the acquisition terminal；Otherwise self-test success, enters step
2)；
2) initiation culture search module searches for radio station, converts the radio signals in each radio station searched to audio signal
And it is transported to sound identification module；The audio signal in each radio station persistently plays one minute；
3) audio signal is identified as letter signal by sound identification module, and letter signal and pirate radio frequency are passed through
Communication module uploads to mster-control centre；
4) mster-control centre compares letter signal and pirate radio frequency with lteral data library and frequency database respectively,
Judge whether radio station is pirate radio；
If not finding pirate radio, mster-control centre's frequency of notification search module continues search for next radio station；
If it was found that pirate radio, each acquisition terminal by the signal strength of pirate radio, acquisition terminal and pirate radio it
Between deflection and acquisition terminal reporting position to mster-control centre, mster-control centre calculates pirate radio according to location algorithm
Position；Mster-control centre's frequency of notification search module continues search for next radio station.
Embodiment 7
Illegal frequency space-time discriminates method for distinguishing as described in Example 6, and difference lies in frequency search block search radio station
Method be to be scanned for successively toward high-frequency from low frequency, until maximum frequency values T, T=108MHz.
Embodiment 8
Illegal frequency space-time discriminates method for distinguishing as described in Example 6, and difference lies in the specific steps of the location algorithm
Suddenly it is the signal strength for the pirate radio that more each acquisition terminal uploads, and it is strongest to filter out pirate radio signal strength
Three acquisition terminals, using these three acquisition terminals upload pirate radio signal strength, acquisition terminal and pirate radio it
Between deflection and acquisition terminal position, the position of pirate radio is obtained by triangle polyester fibre algorithm.
Embodiment 9
Illegal frequency space-time discriminates method for distinguishing as described in Example 8, and difference lies in the triangle polyester fibre algorithm includes
Steps are as follows：
Assuming that the latitude and longitude coordinates of 3 strongest acquisition terminals of pirate radio signal strength are respectively (X1,Y1),(X2,
Y2),(X3,Y3) (X is longitude coordinate, and Y is latitude coordinate), the latitude and longitude coordinates of pirate radio are (Xμ,Yμ)；Pirate radio distance
The distance of 3 acquisition terminals is R respectively1,R2, and R3, then：
(X is solved using the maximum-likelihood method used in polygon estimationμ,Yμ)；
R1 2=(X1-Xμ)2+(Y1-Yμ)2
R2 2=(X2-Xμ)2+(Y2-Yμ)2
R3 2=(X3-Xμ)2+(Y3-Yμ)2
According to polygon estimation, can obtain：
Embodiment 10
Illegal frequency space-time discriminates method for distinguishing as described in Example 6, and difference lies in by each radio station searched
The method that radio signals are converted into audio signal is that the frequency search module selects radio signals by input circuit, by it
It is sent into mixting circuit, the high frequency constant amplitude wave signal generated by local oscillator is also fed into mixting circuit；Radio signals and high frequency etc.
Amplitude wave signal is sent to intermediate frequency amplifier and detecting circuit is amplified and amplitude detection, finally successively after mixting circuit
It is exported by audio-frequency amplifier, obtains audio signal.
Claims (6)
1. a kind of carrying out illegal frequency space-time Zhen method for distinguishing, realized based on a kind of device that illegal frequency space-time is screened, it is described
Device, including mster-control centre and multiple acquisition terminals；Each acquisition terminal includes the frequency being connect respectively with control module
Rate search module, sound identification module and Beidou positioning module；The frequency search module include input circuit, mixting circuit,
Local oscillator, intermediate frequency amplifier, detecting circuit and audio-frequency amplifier；The control module includes MCU, signal strength measurement mould
Block, deflection measurement module, communication module and memory module；Communication module is carried out by short message SMS and grouped data GPRS
Communication；The mster-control centre includes server, computing module, mster-control centre's communication module, total memory module and compares logarithm
According to library；The comparison data library includes lteral data library and frequency database；It is characterised in that it includes steps are as follows：
1) self-check of device：Control module in each acquisition terminal checks that coupled frequency search module, voice are known
Whether other module and Beidou positioning module work normally, if some above-mentioned module cisco unity malfunction, i.e. self-test is unsuccessful, then leads to
It crosses communication module and is reported to mster-control centre, and stop the work of the acquisition terminal；Otherwise 2) self-test success, enters step；
2) initiation culture search module searches for radio station, converts the radio signals in each radio station searched to audio signal and defeated
It is sent to sound identification module；The audio signal in each radio station persistently plays the set time；
3) audio signal is identified as letter signal by sound identification module, and letter signal and pirate radio frequency are passed through communication
Module uploads to mster-control centre；
4) mster-control centre compares letter signal and pirate radio frequency with lteral data library and frequency database respectively, judges
Whether radio station is pirate radio；
If not finding pirate radio, mster-control centre's frequency of notification search module continues search for next radio station；
If it was found that pirate radio, each acquisition terminal will be between the signal strength of pirate radio, acquisition terminal and pirate radio
The reporting position of deflection and acquisition terminal calculates the position of pirate radio according to location algorithm to mster-control centre, mster-control centre
It sets；Mster-control centre's frequency of notification search module continues search for next radio station；
The location algorithm the specific steps are, the signal strengths for the pirate radio that more each acquisition terminal uploads, and screen
Go out strongest three acquisition terminals of pirate radio signal strength, the signal using the pirate radio of these three acquisition terminals upload is strong
The position of deflection and acquisition terminal between degree, acquisition terminal and pirate radio, illegal electricity is obtained by triangle polyester fibre algorithm
The position of platform；It is the frequency search module by the method that the radio signals in each radio station searched are converted into audio signal
Radio signals are selected by input circuit, are sent to mixting circuit, the high frequency constant amplitude wave signal generated by local oscillator,
It is sent into mixting circuit；Radio signals and high frequency constant amplitude wave signal are sent to intermediate frequency amplifier and inspection successively after mixting circuit
Wave circuit is amplified and amplitude detection, is exported finally by audio-frequency amplifier, obtains audio signal.
2. illegal frequency space-time according to claim 1 discriminates method for distinguishing, which is characterized in that the Beidou positioning module packet
Include Big Dipper generation chip and Beidou II chip.
3. illegal frequency space-time according to claim 1 discriminates method for distinguishing, which is characterized in that the control module further includes
Power supply and power management chip.
4. illegal frequency space-time according to claim 1 discriminates method for distinguishing, which is characterized in that the control module further includes
Working station indicator；Working station indicator is the LED light of different colours.
5. illegal frequency space-time according to claim 1 discriminates method for distinguishing, which is characterized in that frequency search block search electricity
The method of platform is to be scanned for successively toward high-frequency from low frequency, until maximum frequency values T.
6. illegal frequency space-time according to claim 1 discriminates method for distinguishing, which is characterized in that the triangle polyester fibre algorithm packet
Include that steps are as follows：
Assuming that the latitude and longitude coordinates of 3 strongest acquisition terminals of pirate radio signal strength are respectively (X1,Y1),(X2,Y2),(X3,
Y3), the latitude and longitude coordinates of pirate radio are (Xμ,Yμ)；The distance of 3 acquisition terminals of pirate radio distance is R respectively1,R2, and
R3, then：
(X is solved using the maximum-likelihood method used in polygon estimationμ,Yμ)；
R1 2=(X1-Xμ)2+(Y1-Yμ)2
R2 2=(X2-Xμ)2+(Y2-Yμ)2
R3 2=(X3-Xμ)2+(Y3-Yμ)2
According to polygon estimation, obtain：
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| CN203951480U (en) * | 2014-07-21 | 2014-11-19 | 西安航空学院 | Network illegal FM radio station monitoring system |
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| CN203951480U (en) * | 2014-07-21 | 2014-11-19 | 西安航空学院 | Network illegal FM radio station monitoring system |
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