CN105577303A - Illegal frequency space-time discrimination apparatus and method - Google Patents
Illegal frequency space-time discrimination apparatus and method Download PDFInfo
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- CN105577303A CN105577303A CN201510943649.1A CN201510943649A CN105577303A CN 105577303 A CN105577303 A CN 105577303A CN 201510943649 A CN201510943649 A CN 201510943649A CN 105577303 A CN105577303 A CN 105577303A
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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 invention relates to an illegal frequency space-time discrimination apparatus and method. The illegal frequency space-time discrimination apparatus comprises a total control center and multiple acquisition terminals. The acquisition terminals comprise frequency search modules, voice identification modules and Beidou positioning modules which are respectively connected with control modules. The control modules are the control centers of the acquisition terminals and are in charge of overall planning of the acquisition terminals. The illegal frequency space-time discrimination apparatus determines whether a radio station is an illegal radio station according to radio station content, is high in accuracy and high in practicality, and solves the problem of difficulty in searching for camouflage radio stations by use of a conventional method.
Description
Technical field
The present invention relates to the apparatus and method that a kind of illegal frequency space-time is screened, belong to speech recognition and the technical field of Big Dipper location.
Background technology
The problem long-term existence of pirate radio, remains incessant after repeated prohibition, and lawless person, by private frame radio station, plays the distribution message of medicine, health products.Pirate radio is not only upset society, economic public order but also is affected the normal use of dedicated frequency section, causes the loss of national economy.
The method of existing search pirate radio, great majority are started with from frequency, the frequency searched and legal list of frequency being compared or filter by being provided with appropriate frequency bands scope, finding illegal frequency station.The searching method of these pirate radios is all start with from frequency aspect, there is a lot of drawbacks.Such as, many pirate radios legal frequency that disguises oneself as is play, and is difficult to found.
Chinese patent CN203951480U discloses a kind of network illegal FM radio station monitoring system.This system comprises multiple terminal and server; When there is the emission spectrum do not checked and not approved or put on record, by this channel labelling, by frequency and current signal strength signal intensity, the information such as time tag are reported to server and are roughly located transmitting site and the coverage of this frequency.The demodulation function of the terminal that start signal intensity is larger, carries out record to the audio frequency of pirate radio simultaneously, convenient investigation and evidence collection and post-processed.This system is the method screening pirate radio contrasted by frequency, and roughly can only locate the transmitting site of this frequency, reliability and accuracy low.
Summary of the invention
For the deficiencies in the prior art, the invention provides the device that a kind of illegal frequency space-time is screened.This device by speech recognition technology, identifies the content in radio station, identifies whether radio station is pirate radio according to the content in radio station, accuracy and reliability higher.
The present invention also provides one to utilize said apparatus to carry out illegal frequency space-time Zhen method for distinguishing.
Technical scheme of the present invention is as follows:
The device that illegal frequency space-time is screened, comprises mster-control centre and multiple acquisition terminal; Described acquisition terminal comprises the frequency search module, sound identification module and the Big Dipper locating module that are connected with control module respectively.Control module is the control centre of acquisition terminal, is responsible for the overall planning of acquisition terminal.
Described frequency search module comprises input circuit, mixting circuit, local oscillator, intermediate frequency amplifier, detecting circuit and audio frequency amplifier.Frequency search module is carried out frequency search and the audio signal searched is transported to sound identification module.Described input circuit is shunt-resonant circuit, has frequency-selecting effect.
Sound identification module receives described audio signal, and audio signal is identified as letter signal, and the frequency in letter signal and radio station is uploaded to mster-control centre.
Described control module comprises MCU, signal strength measurement module, deflection measurement module, communication module and memory module; Communication module is communicated with grouped data (GPRS) by short message (SMS).MCU is the control centre of acquisition terminal, the stable operation of control frequency search module, sound identification module and Big Dipper locating module.Signal strength measurement module measures the signal strength signal intensity of pirate radio.Deflection measurement module is for measuring the deflection between acquisition terminal and pirate radio.Communication module is responsible for the communication between acquisition terminal and mster-control centre.The data such as signal strength signal intensity, the position of acquisition terminal, deflection acquisition terminal and pirate radio between of memory module to pirate radio store.
Described mster-control centre comprises server, computing module, mster-control centre's communication module, total memory module and comparison data storehouse.Mster-control centre judges whether radio station is pirate radio, and assigns instruction to all acquisition terminals.Server assigns dependent instruction, the operation in overall planning mster-control centre.Computing module carries out algorithm calculating, when communication module receives from acquisition terminal, during the positional information of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and acquisition terminal, computing module calculates according to certain algorithm, calculate the positional information of pirate radio, and show on electronic chart.Described total memory module is the place that mster-control centre carries out information storage, the running status of the information that storage of collected terminal is sent and mster-control centre's modules.
Preferably, described Big Dipper locating module comprises Big Dipper generation chip and Beidou II chip.Big Dipper generation chip, by the low noise amplification of Big Dipper short message receiving and transmitting signal, power amplification, Up/Down Conversion and Base-Band Processing, realizes the transmitting-receiving of Big Dipper short message and active location function.Beidou II chip achieves with the same passive location of GPS, adopts Kalman filtering optimized algorithm, under various complex environment, can keep outstanding acquisition and tracking ability, exports continuously positioning result reliably.
Preferably, the number of described acquisition terminal is 3-10.
Preferably, described control module also comprises power supply and power management chip.Described acquisition terminal adopts flying power strong and volume and the little power supply of quality.Power management chip passes through the power supply break-make controlling each module, under assurance device is operated in the pattern of low-power consumption, to reach the ability of lasting continuation of the journey.
Preferably, described control module also comprises working station indicator; Working station indicator is the LED of different colours.By the operating state of the LED indicating device of different colours.
Preferably, described comparison data storehouse comprises lteral data storehouse and frequency database.
A kind of illegal frequency space-time discriminates method for distinguishing, comprises step as follows:
1) self-check of device: the control module in each described acquisition terminal checks whether coupled frequency search module, sound identification module and Big Dipper locating module normally work, if certain module cisco unity malfunction above-mentioned, namely self-inspection is unsuccessful, then report mster-control centre by communication module, and stop the work of this acquisition terminal; Otherwise self-inspection success, enters step 2);
2) initiation culture search module search radio station, is converted into audio signal by the radio signals in each radio station searched and is transported to sound identification module; The audio signal in each radio station continues broadcasting one minute;
3) audio signal is identified as letter signal by sound identification module, and letter signal and pirate radio frequency are uploaded to mster-control centre by communication module;
4) mster-control centre by letter signal and pirate radio frequency respectively with lteral data storehouse and frequency database comparison, judge whether radio station is pirate radio;
If do not find pirate radio, mster-control centre's frequency of notification search module continues the next radio station of search;
If discovery pirate radio, each acquisition terminal is by the reporting position of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and acquisition terminal to mster-control centre, and mster-control centre calculates the position of pirate radio according to location algorithm; Mster-control centre's frequency of notification search module continues the next radio station of search.
Preferably, the method in frequency search block search radio station is search for toward high-frequency successively from low frequency, until maximum frequency values T.
Preferably, the concrete steps of described location algorithm are, the signal strength signal intensity of the pirate radio that more each acquisition terminal is uploaded, and filter out three the strongest acquisition terminals of pirate radio signal strength signal intensity, the position of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and the acquisition terminal that utilize these three acquisition terminals to upload, obtains the position of pirate radio by triangle polyester fibre algorithm;
Preferred further, it is as follows that described triangle polyester fibre algorithm comprises step:
Suppose that the latitude and longitude coordinates of the acquisition terminal that 3 pirate radio signal strength signal intensities are the strongest is respectively (X
1, Y
1), (X
2, Y
2), (X
3, Y
3); The latitude and longitude coordinates of pirate radio is (X
μ, Y
μ); The distance of pirate radio distance 3 acquisition terminals is R respectively
1, R
2, and R
3(R
1, R
2, and R
3obtain respectively by rssi commercial measurement; Rssi technology is the distance of the strong and weak measured signal point of signal by receiving and acceptance point, and then positions a kind of location technology of calculating according to corresponding data), then:
The maximum-likelihood method used in polygon estimation is adopted to solve (X
μ, Y
μ);
R
1 2＝(X
1-X
μ)
2+(Y
1-Y
μ)
2
R
2 2＝(X
2-X
μ)
2+(Y
2-Y
μ)
2
R
3 2＝(X
3-X
μ)
2+(Y
3-Y
μ)
2
According to polygon estimation, can obtain:
Preferably, be that described frequency search module selects radio signals by input circuit, is sent into mixting circuit by the method that the radio signals in each radio station searched is converted into audio signal, the high frequency constant amplitude ripple signal produced by local oscillator, also sends into mixting circuit; Radio signals and high frequency constant amplitude ripple signal, after mixting circuit, are sent to intermediate frequency amplifier and detecting circuit carries out amplifying and amplitude detection successively, export, obtain audio signal finally by audio frequency amplifier.
The usefulness of this invention is:
1, the device of illegal frequency space-time examination of the present invention, judge whether radio station is pirate radio, and accuracy is high according to radio content, solve in existing method the difficult problem being difficult to find camouflage radio station, practicality is high;
2, the device of illegal frequency space-time examination of the present invention, adopts speech recognition technology; Compared with the method finding pirate radio with traditional comparison frequency, adopt speech recognition technology reliability high, the camouflage radio station of frequency being carried out packing can be found;
3, the device of illegal frequency space-time examination of the present invention, adopt Beidou II Satellite Navigation Technique, obtained the parameter such as longitude, latitude, speed of research object by Beidou II satellite fix, thus obtain the position of acquisition terminal on electronic chart, find the position of pirate radio further.
Accompanying drawing explanation
Fig. 1 is acquisition terminal structural representation of the present invention;
Fig. 2 is the structural representation in mster-control centre of the present invention;
Fig. 3 is the workflow diagram of acquisition terminal of the present invention;
Fig. 4 is the workflow diagram of illegal frequency space-time screening device of the present invention.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited thereto.
Embodiment 1
As Figure 1-4.
The device that illegal frequency space-time is screened, comprises mster-control centre and 5 acquisition terminals; Described acquisition terminal comprises the frequency search module, sound identification module and the Big Dipper locating module that are connected with control module respectively.Control module is the control centre of acquisition terminal, is responsible for the overall planning of acquisition terminal.
Described frequency search module comprises input circuit, mixting circuit, local oscillator, intermediate frequency amplifier, detecting circuit and audio frequency amplifier.Frequency search module is carried out frequency search and the audio signal searched is transported to sound identification module.Described input circuit is shunt-resonant circuit, has frequency-selecting effect.
Sound identification module receives described audio signal, and audio signal is identified as letter signal, and the frequency in letter signal and radio station is uploaded to mster-control centre.
Described control module comprises MCU, signal strength measurement module, deflection measurement module, communication module and memory module; Communication module is communicated with grouped data (GPRS) by short message (SMS).MCU is the control centre of acquisition terminal, the stable operation of control frequency search module, sound identification module and Big Dipper locating module.Signal strength measurement module measures the signal strength signal intensity of pirate radio.Deflection measurement module is for measuring the deflection between acquisition terminal and pirate radio.Communication module is responsible for the communication between acquisition terminal and mster-control centre.The data such as signal strength signal intensity, the position of acquisition terminal, deflection acquisition terminal and pirate radio between of memory module to pirate radio store.
Described mster-control centre comprises server, computing module, mster-control centre's communication module, total memory module and comparison data storehouse.Mster-control centre judges whether radio station is pirate radio, and assigns instruction to all acquisition terminals.Server assigns dependent instruction, the operation in overall planning mster-control centre.Computing module carries out algorithm calculating, when communication module receives from acquisition terminal, during the positional information of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and acquisition terminal, computing module calculates according to certain algorithm, calculate the positional information of pirate radio, and show on electronic chart.Described total memory module is the place that mster-control centre carries out information storage, the running status of the information that storage of collected terminal is sent and mster-control centre's modules.
Embodiment 2
The device of illegal frequency space-time examination as described in Example 1, its difference is, described control module also comprises power supply and power management chip.Described acquisition terminal adopts flying power strong and volume and the little solar energy of quality add the charge-discharge circuit of lithium battery.Power management chip passes through the power supply break-make controlling each module, under assurance device is operated in the pattern of low-power consumption, to reach the ability of lasting continuation of the journey.
Embodiment 3
The device of illegal frequency space-time examination as described in Example 1, its difference is, described control module also comprises working station indicator; Working station indicator is the LED of different colours.By the operating state of the LED indicating device of different colours.
Embodiment 4
The device of illegal frequency space-time examination as described in Example 1, its difference is, described comparison data storehouse comprises lteral data storehouse and frequency database.
Embodiment 5
The device of illegal frequency space-time examination as described in Example 1, its difference is, described Big Dipper locating module comprises Big Dipper generation chip and Beidou II chip.Big Dipper generation chip, by the low noise amplification of Big Dipper short message receiving and transmitting signal, power amplification, Up/Down Conversion and Base-Band Processing, realizes the transmitting-receiving of Big Dipper short message and active location function.Beidou II chip achieves with the same passive location of GPS, adopts Kalman filtering optimized algorithm, under various complex environment, can keep outstanding acquisition and tracking ability, exports continuously positioning result reliably.
Embodiment 6
The device utilizing the illegal frequency space-time described in embodiment 1-5 to screen carries out illegal frequency space-time and discriminates a method for distinguishing, comprises step as follows:
1) self-check of device: the control module in each described acquisition terminal checks whether coupled frequency search module, sound identification module and Big Dipper locating module normally work, if certain module cisco unity malfunction above-mentioned, namely self-inspection is unsuccessful, then report mster-control centre by communication module, and stop the work of this acquisition terminal; Otherwise self-inspection success, enters step 2);
2) initiation culture search module search radio station, is converted into audio signal by the radio signals in each radio station searched and is transported to sound identification module; The audio signal in each radio station continues broadcasting one minute;
3) audio signal is identified as letter signal by sound identification module, and letter signal and pirate radio frequency are uploaded to mster-control centre by communication module;
4) mster-control centre by letter signal and pirate radio frequency respectively with lteral data storehouse and frequency database comparison, judge whether radio station is pirate radio;
If do not find pirate radio, mster-control centre's frequency of notification search module continues the next radio station of search;
If discovery pirate radio, each acquisition terminal is by the reporting position of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and acquisition terminal to mster-control centre, and mster-control centre calculates the position of pirate radio according to location algorithm; Mster-control centre's frequency of notification search module continues the next radio station of search.
Embodiment 7
Illegal frequency space-time discriminates method for distinguishing as described in Example 6, and its difference is, the method in frequency search block search radio station is search for toward high-frequency successively 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, its difference is, the concrete steps of described location algorithm are, the signal strength signal intensity of the pirate radio that more each acquisition terminal is uploaded, and filter out three the strongest acquisition terminals of pirate radio signal strength signal intensity, the position of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and the acquisition terminal that utilize these three acquisition terminals to upload, obtains the position of pirate radio by triangle polyester fibre algorithm.
Embodiment 9
Illegal frequency space-time discriminates method for distinguishing as described in Example 8, and its difference is, it is as follows that described triangle polyester fibre algorithm comprises step:
Suppose that the latitude and longitude coordinates of the acquisition terminal that 3 pirate radio signal strength signal intensities are the strongest is respectively (X
1, Y
1), (X
2, Y
2), (X
3, Y
3) (X is longitude coordinate, and Y is latitude coordinate), the latitude and longitude coordinates of pirate radio is (X
μ, Y
μ); The distance of pirate radio distance 3 acquisition terminals is R respectively
1, R
2, and R
3, then:
The maximum-likelihood method used in polygon estimation is adopted to solve (X
μ, Y
μ);
R
1 2＝(X
1-X
μ)
2+(Y
1-Y
μ)
2
R
2 2＝(X
2-X
μ)
2+(Y
2-Y
μ)
2
R
3 2＝(X
3-X
μ)
2+(Y
3-Y
μ)
2
According to polygon estimation, can obtain:
Embodiment 10
Illegal frequency space-time discriminates method for distinguishing as described in Example 6, its difference is, by the method that the radio signals in each radio station searched is converted into audio signal be, described frequency search module selects radio signals by input circuit, sent into mixting circuit, the high frequency constant amplitude ripple signal produced by local oscillator, also sends into mixting circuit; Radio signals and high frequency constant amplitude ripple signal, after mixting circuit, are sent to intermediate frequency amplifier and detecting circuit carries out amplifying and amplitude detection successively, export, obtain audio signal finally by audio frequency amplifier.
Claims (10)
1. a device for illegal frequency space-time examination, is characterized in that, comprise mster-control centre and multiple acquisition terminal; Each described acquisition terminal comprises the frequency search module, sound identification module and the Big Dipper locating module that are connected with control module respectively;
Described frequency search module comprises input circuit, mixting circuit, local oscillator, intermediate frequency amplifier, detecting circuit and audio frequency amplifier;
Described control module comprises MCU, signal strength measurement module, deflection measurement module, communication module and memory module; Communication module is communicated with grouped data GPRS by short message SMS;
Described mster-control centre comprises server, computing module, mster-control centre's communication module, total memory module and comparison data storehouse.
2. the device of illegal frequency space-time examination according to claim 1, it is characterized in that, described Big Dipper locating module comprises Big Dipper generation chip and Beidou II chip.
3. the device of illegal frequency space-time examination according to claim 1, it is characterized in that, described control module also comprises power supply and power management chip.
4. the device of illegal frequency space-time examination according to claim 1, it is characterized in that, described control module also comprises working station indicator; Working station indicator is the LED of different colours.
5. the device of illegal frequency space-time examination according to claim 1, it is characterized in that, described comparison data storehouse comprises lteral data storehouse and frequency database.
6. the device utilizing the illegal frequency space-time in claim 1-5 described in any one to screen carries out illegal frequency space-time and discriminates a method for distinguishing, it is characterized in that, comprises step as follows:
1) self-check of device: the control module in each described acquisition terminal checks whether coupled frequency search module, sound identification module and Big Dipper locating module normally work, if certain module cisco unity malfunction above-mentioned, namely self-inspection is unsuccessful, then report mster-control centre by communication module, and stop the work of this acquisition terminal; Otherwise self-inspection success, enters step 2);
2) initiation culture search module search radio station, is converted into audio signal by the radio signals in each radio station searched and is transported to sound identification module; The audio signal in each radio station continues to play the set time;
3) audio signal is identified as letter signal by sound identification module, and letter signal and pirate radio frequency are uploaded to mster-control centre by communication module;
4) mster-control centre by letter signal and pirate radio frequency respectively with lteral data storehouse and frequency database comparison, judge whether radio station is pirate radio;
If do not find pirate radio, mster-control centre's frequency of notification search module continues the next radio station of search;
If discovery pirate radio, each acquisition terminal is by the reporting position of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and acquisition terminal to mster-control centre, and mster-control centre calculates the position of pirate radio according to location algorithm; Mster-control centre's frequency of notification search module continues the next radio station of search.
7. illegal frequency space-time according to claim 6 discriminates method for distinguishing, and it is characterized in that, the method in frequency search block search radio station is search for toward high-frequency successively from low frequency, until maximum frequency values T.
8. illegal frequency space-time according to claim 6 discriminates method for distinguishing, it is characterized in that, the concrete steps of described location algorithm are, the signal strength signal intensity of the pirate radio that more each acquisition terminal is uploaded, and filter out three the strongest acquisition terminals of pirate radio signal strength signal intensity, the position of the signal strength signal intensity of pirate radio, the deflection between acquisition terminal and pirate radio and the acquisition terminal that utilize these three acquisition terminals to upload, obtains the position of pirate radio by triangle polyester fibre algorithm.
9. illegal frequency space-time according to claim 8 discriminates method for distinguishing, and it is characterized in that, it is as follows that described triangle polyester fibre algorithm comprises step:
Suppose that the latitude and longitude coordinates of the acquisition terminal that 3 pirate radio signal strength signal intensities are the strongest is respectively (X
1, Y
1), (X
2, Y
2), (X
3, Y
3), the latitude and longitude coordinates of pirate radio is (X
μ, Y
μ); The distance of pirate radio distance 3 acquisition terminals is R respectively
1, R
2, and R
3, then:
The maximum-likelihood method used in polygon estimation is adopted to solve (X
μ, Y
μ);
R
1 2＝(X
1-X
μ)
2+(Y
1-Y
μ)
2
R
2 2＝(X
2-X
μ)
2+(Y
2-Y
μ)
2
R
3 2＝(X
3-X
μ)
2+(Y
3-Y
μ)
2
According to polygon estimation:
10. illegal frequency space-time according to claim 6 discriminates method for distinguishing, it is characterized in that, by the method that the radio signals in each radio station searched is converted into audio signal be, described frequency search module selects radio signals by input circuit, sent into mixting circuit, the high frequency constant amplitude ripple signal produced by local oscillator, also sends into mixting circuit; Radio signals and high frequency constant amplitude ripple signal, after mixting circuit, are sent to intermediate frequency amplifier and detecting circuit carries out amplifying and amplitude detection successively, export, obtain audio signal finally by audio frequency amplifier.
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| CN201510943649.1A CN105577303B (en) | 2015-12-16 | 2015-12-16 | A kind of apparatus and method that illegal frequency space-time is screened |
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| CN109756285A (en) * | 2019-01-29 | 2019-05-14 | 云南大学 | Unauthorized broadcast singal monitoring device and monitoring method based on audio acoustic feature |
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| CN105577303B (en) | 2018-10-23 |
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