CN102955077B - Anti-interference measuring system and method for space distribution of environmental-electromagnetic radiation of mobile communication base station - Google Patents
Anti-interference measuring system and method for space distribution of environmental-electromagnetic radiation of mobile communication base station Download PDFInfo
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- CN102955077B CN102955077B CN201210445140.0A CN201210445140A CN102955077B CN 102955077 B CN102955077 B CN 102955077B CN 201210445140 A CN201210445140 A CN 201210445140A CN 102955077 B CN102955077 B CN 102955077B
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Abstract
The invention discloses an anti-interference measuring system for space distribution of environmental-electromagnetic radiation of a mobile communication base station. The anti-interference measuring system comprises a mobile-communication emergency communication system, an anti-interference measuring device and a simulated user terminal, wherein the anti-interference measuring device is arranged on a testing path between the mobile-communication emergency communication system and the simulated user terminal. The invention also discloses an anti-interference measuring method for the space distribution of the environmental-electromagnetic radiation of the mobile communication base station based on the anti-interference measuring system. The invention has the advantages that various types (2G, 3G, 4G and the like) of base stations can be simulated to shield interference of reflection, diffraction and scattering of various electromagnetic radiating sources and self signals and realize accurate measurement of the electromagnetic radiation level of the three-dimensional space of the base station. The development and the application of the invention are beneficial to obtaining the space distribution condition of the environmental-electromagnetic radiation level of various base stations and provide basic data for prediction and analysis of the influence of the electromagnetic radiation environment of the base stations.
Description
Technical field
The invention belongs to electromagnetic radiation from environment test, electromagnetic compatibility, the anti-interference field of electromagnetism, be specifically related to a kind of anti-interference measuring system and the measuring method thereof that can carry out to the electromagnetic radiation from environment level of mobile communication base station space distribution test.
Background technology
Electromagnetic radiation pollution has become the fourth-largest pollution after atmosphere, water and noise pollution.Mobile communication base station is the main electromagnetic radiation source in city, can reach every 0.09km in urban population compact district
2just have 1 base station, the public to antenna for base station produce electromagnetic radiation be concerned about very much, correspondingly environmental monitoring department has also carried out a large amount of monitorings.
Because the coverage of single base station is more and more less, 2G, 3G, the 4G communication base station of each operator distribute in less region, add other broadcast television signal, cause the electromagnetic environment of intending testing base station to tend to very complicated.As need carry out base station three-dimensional spatial distribution measurement, surveying instrument terrain clearance, the impact of the aspect such as interference and test site size and number of users of various ELECTROMAGNETIC RADIATION SIGNATURE, the reflection of intending surveying signal, diffraction, scattering around will be subject at present.
Summary of the invention
Object of the present invention is exactly in order to overcome the disturbing factor described in background technology, the anti-interference measuring system of a kind of mobile communication base station electromagnetic radiation from environment space distribution is proposed, this system can be simulated various standards (2G, 3G, 4G etc.) base station, around shielding, the interference of various electromagnetic radiation sources and self signal reflex, diffraction, scattering, realizes the Measurement accuracy to base station three dimensions electromagnetic radiation level.
The development of this system and application, be conducive to obtain the electromagnetic radiation from environment horizontal space distribution situation of various base stations, for base station electromagnetic radiation environment impact prediction and analysis provide basic data.
Another object of the present invention is exactly to propose a kind of mobile communication base station electromagnetic radiation from environment space distribution anti-jamming measurement methods based on above-mentioned anti-interference measuring system.
For achieving the above object, the present invention discloses a kind of technical scheme: the anti-interference measuring system of mobile communication base station electromagnetic radiation from environment space distribution, comprise mobile communication emergency communication system, anti-interference measurement mechanism and pseudo subscriber terminal, described anti-interference measurement mechanism is located on the test path between mobile communication emergency communication system and pseudo subscriber terminal;
Described mobile communication emergency communication system comprises mobile communication emergency communication and carries car, is located at connected mobile communication control system, feeder line, the duplexed antenna successively on this year car and is located at antenna lifting support, the antenna steering device of this year car roof;
The shield that described anti-interference measurement mechanism comprises square or rectangular parallelepiped, one side of this shield is square openings, all the other five for having the metal screen lee-side of excellent conductive performance, the whole surface of internal cavity of this shield is laid absorbing material, its bottom surface absorbing material is provided with rf integration field intensity meter, the earthing of casing of this shield;
Described pseudo subscriber terminal comprises signal attenuation device and wireless dial-out user terminal, wireless receiving user terminal, and this is wireless dial-out user terminal, wireless receiving user terminal are located at respectively in signal attenuation device separately.
Described mobile communication emergency communication is carried car and is generally added trailer by container and convert, and carrying a car can travel on ordinary highway, carries a car and is equipped with necessary power supply (generator or commercial power interface), air-conditioning and ground connection.
Described mobile communication control system is 2G, 3G or the 4G mobile communication control system of having operated at present, or be following mobile communication control system, this mobile communication control system can be linked into mobile communication operators network by microwave or optical fiber, is received or is launched mobile communication signal by duplexed antenna.Corresponding, described wireless dial-out user terminal and wireless receiving user terminal are the mobile phone of the standards such as 2G, 3G or 4G, and for intending surveying the corresponding system user terminal of base station system, these terminals can be accessed by be intended in examining system.
The preferred 2216v2 of Ericsson of described 2G mobile communication control system, emerging zXsDR B8300 during 3G or 4G mobile communication control system are preferred.
The preferred escalator of described antenna lifting support, described antenna steering device is located at the top of escalator, and described duplexed antenna is located at a side of antenna steering device.
In one embodiment, described signal attenuation device is the metal support of kalamein net, this wire netting ground connection.The preferred square box support body of described metal support, described wire netting grid the best is less than 1mm, and this wire netting the best connects ground rod ground connection by ground wire.
The present invention discloses another kind of technical scheme: the mobile communication base station electromagnetic radiation from environment space distribution anti-jamming measurement methods based on above-mentioned anti-interference measuring system, comprises the following steps:
1) choose open test site, its physical features is smooth, clear and reverberation, and mobile communication emergency communication is carried car and is located at test site, is positioned at the starting point of test path, the reverse interference without other electromagnetic radiation source of measuring route;
2) open mobile communication control system, accessing mobile communication network, anti-interference measurement mechanism is placed on test path, its square openings is aimed at duplexed antenna, be initial distance apart from the horizontal range of duplexed antenna, wireless dial-out user terminal and the wireless receiving user terminal be located in signal attenuation device are separately placed on the terminal of test path or farther place, and at test period, wireless dial-out user terminal and wireless receiving user terminal are all in active state;
3) height of adjusting antenna lifting support, make the measuring sonde of rf integration field intensity meter in duplexed antenna and anti-interference measurement mechanism form certain difference in height, adjust duplexed antenna transmit direction by antenna steering device 7, make transmit direction and the test path shape of antenna at a certain angle, record the measurement result of rf integration field intensity meter in anti-interference measurement mechanism;
4) on test path, anti-interference measurement mechanism is moved by certain step-length, return to step 3), measure the terminal to test path always.
The reverse interference without other electromagnetic radiation source of described test path refers to other reverse electromagnetic radiation source distance of test path and is less than 0.2V/m as far as the background electric field intensity level that can ensure the anti-interference measurement mechanism that is placed in test path.
Described anti-interference measurement mechanism is apart from preferably 5 meters of the initial distances of duplexed antenna.
Described certain difference in height the best is followed successively by 0,3,6,9 ... 18 meters or be followed successively by 0,0.5,1 ... 18 meters, certain angle be followed successively by 0 °, 5 °, 10 ° ... 90 °, certain step-length the best is 0.5 meter, and length the best of test path is 100-200 rice.
The present invention utilizes emergency communication to carry the feature that car has removable, antenna liftable and turns to, select to be applicable to the place of measurement, utilize signal attenuation device to decay to the signal that transmits and receives of user terminal, the signal attenuation of simulation actual environment, realizing the anti-interference measurement of base-station environment electromagnetic radiation level space distribution by anti-interference measurement mechanism, is a kind of desirable anti-interference measuring system of mobile communication base station electromagnetic radiation from environment space distribution.The present invention proposes a kind of mobile communication base station electromagnetic radiation from environment space distribution anti-jamming measurement methods based on above-mentioned anti-interference measuring system simultaneously, realizes the accurate measurement of mobile communication base station electromagnetic radiation from environment space distribution.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment;
In figure: 1. the wireless dial-out user terminal of car 4. mobile communication control system 5. feeder line 6. escalator 7. antenna steering device 8. duplexed antenna anti-interference measurement mechanism 11. signal attenuation device 12. of 9. signal transmit direction 10., wireless receiving user terminal 13. ground wire 14. ground rods are carried in test site 2. test path 3. mobile communication emergency communications.
Embodiment
Below in conjunction with accompanying drawing, most preferred embodiment of the present invention is described in detail.
As shown in Figure 1, the anti-interference measuring system of mobile communication base station electromagnetic radiation from environment space distribution of the present invention, comprise mobile communication emergency communication system, anti-interference measurement mechanism 10 and pseudo subscriber terminal, described anti-interference measurement mechanism is located on the test path between mobile communication emergency communication system and pseudo subscriber terminal.
Mobile communication emergency communication system comprises mobile communication emergency communication and carries car 3, be located at connected mobile communication control system 4, feeder line 5, the duplexed antenna 8 successively on this year car 3 and be located at escalator 6, the antenna steering device 7 of this year car 3 roofs, antenna steering device 7 is located at the top of escalator 6, and duplexed antenna 8 is located at a side of antenna steering device 7.
The shield that anti-interference measurement mechanism 10 comprises square or rectangular parallelepiped, one side of this shield is square openings, all the other five for having the metal screen lee-side of excellent conductive performance, the whole surface of internal cavity of this shield is laid absorbing material, its bottom surface absorbing material is provided with rf integration field intensity meter, rf integration field intensity meter can be selected the EMR300 of German NADAR company, and the shell of described shield connects ground rod ground connection by ground wire.The width in the shield headroom chamber in anti-interference measurement mechanism is 2 times of the long wavelength of mobile communication downlink signal, is highly 2 times of the long wavelength of mobile communication downlink signal, and length is to be more than or equal to 2 times of the long wavelength of mobile communication downlink signal.Absorbing material the best in anti-interference measurement mechanism is divided into two kinds, be lay ground plane inner side central authorities, the absorbing material of absorbing property to meet or exceed-25dB of 1GHz frequency signal, another kind be lay surrounding residue space inside ground plane, the absorbing material of absorbing property to meet or exceed-12dB of 1GHz frequency signal.The square openings of the shield in anti-interference measurement mechanism is positive, the clear distance of the probe of described rf integration field intensity meter and the left surface of shield, right flank, end face, inner side, bottom surface is more than or equal to 1 measured band wavelength, with the clear distance of inner side, the back side be 10cm.The measurement data signals of described rf integration field intensity meter is exported through optical fiber, and this fiber-optic output connects portable computer through opto-electronic conversion head.
Described pseudo subscriber terminal comprises signal attenuation device 11 and wireless dial-out user terminal, wireless receiving user terminal 12, and this is wireless dial-out user terminal, wireless receiving user terminal 12 are located at respectively in signal attenuation device 11 separately.Signal attenuation device 11 is the square box support body metal support of kalamein net, wire netting ground connection, and wire netting grid is less than 1mm, and wire netting connects ground rod 14 ground connection by ground wire 13.
The invention also discloses a kind of mobile communication base station electromagnetic radiation from environment space distribution anti-jamming measurement methods based on above-mentioned anti-interference measuring system, comprise the following steps:
1) choose open test site 1, its physical features is smooth, clear and reverberation, test site 1 can be more than or equal to 200 meters for the distance of test, mobile communication emergency communication is carried car and is located at test site 1, be positioned at the starting point of test path 2, reverse other electromagnetic radiation source distance of test path is less than 0.2V/m as far as the background electric field intensity level that can ensure the anti-interference measurement mechanism that is placed in test path, to avoid the interference of other electromagnetic radiation source identical with the transmit direction of duplexed antenna on year car.
2) mobile communication control system 4 is connected with duplexed antenna 8 by feeder line 5, open mobile communication control system 4, accessing mobile communication network, anti-interference measurement mechanism 10 is placed on test path 2, its square openings is aimed at duplexed antenna 8, be 5 meters of initial distances apart from the horizontal range of duplexed antenna 8, by the wireless dial-out user terminal of pseudo subscriber terminal 12, wireless receiving user terminal 12 is placed on respectively in two signal attenuation device 11, wireless dial-out user terminal is responsible for extracting, wireless receiving user terminal is responsible for reception, wireless dial-out user terminal, the quantity of wireless receiving user terminal 12 can need to determine according to test, be generally the maximum number of user of a certain carrier wave or time slot, wireless dial-out user terminal, wireless receiving user terminal 12 is placed on the terminal of test path 2 or farther place, at test period, wireless dial-out user terminal, wireless receiving user terminal 12 is all in active state.
3) height of adjusting escalator 6, make duplexed antenna 8 and the measuring sonde of the interior rf integration field intensity meter of anti-interference measurement mechanism 10 form certain difference in height, be made as successively 0,3,6,9 ... 18 meters, the difference in height here also can be adjusted according to actual needs, for example, be made as successively 0,0.5,1 ... 18 meters, if need to carry out precise space measurement, difference in height can determine according to the needs of oneself, such as 0,0.1,0.2,0.3 ... 18 meters, but workload can be very large! Adjust the transmit direction of duplexed antenna 8 by antenna steering device 7, make the transmit direction 9 of antenna 8 at a certain angle with test path 2 shapes, be followed successively by 0 °, 5 °, 10 ° ... 90 °, record the measurement result of the interior rf integration field intensity meter of anti-interference measurement mechanism 10.
4) on test path 2, anti-interference measurement mechanism 10 is pressed to certain step-length, be generally 0.5 meter, mobile, 0.5 meter of step-length is to found through experiments a good step-length, greatly just bad again, can test leakage some peak values, be certainly littlely also fine, meticulousr, but can greatly increase workload, be not optimized, returns to step 3), measure to the terminal of test path 2, the length of test path 2 is 100-200 rice always.
After above step completes successively, can obtain simulation mobile communication base station apart from 100-200 rice, the spacing electromagnetic radiation horizontal distribution measurement result of height in 18 meters.
Claims (10)
1. the anti-interference measuring system of mobile communication base station electromagnetic radiation from environment space distribution, it is characterized in that: comprise mobile communication emergency communication system, anti-interference measurement mechanism and pseudo subscriber terminal, described anti-interference measurement mechanism is located on the test path between mobile communication emergency communication system and pseudo subscriber terminal;
Described mobile communication emergency communication system comprises mobile communication emergency communication and carries car, is located at connected mobile communication control system, feeder line, the duplexed antenna successively on this year car and is located at antenna lifting support, the antenna steering device of this year car roof;
The shield that described anti-interference measurement mechanism comprises square or rectangular parallelepiped, one side of this shield is square openings, all the other five for having the metal screen lee-side of excellent conductive performance, the whole surface of internal cavity of this shield is laid absorbing material, its bottom surface absorbing material is provided with rf integration field intensity meter, the earthing of casing of this shield;
Described pseudo subscriber terminal comprises signal attenuation device and wireless dial-out user terminal, wireless receiving user terminal, and this is wireless dial-out user terminal, wireless receiving user terminal are located at respectively in signal attenuation device separately.
2. anti-interference measuring system according to claim 1, is characterized in that: described mobile communication control system is 2G, 3G or 4G mobile communication control system, and described wireless dial-out user terminal and wireless receiving user terminal are the mobile phone of 2G, 3G or 4G standard.
3. anti-interference measuring system according to claim 2, is characterized in that: described 2G mobile communication control system adopts the 2216v2 of Ericsson, emerging zXsDR B8300 during 3G or 4G mobile communication control system adopt.
4. anti-interference measuring system according to claim 1, is characterized in that: described antenna lifting support adopts escalator, and described antenna steering device is located at the top of escalator, and described duplexed antenna is located at a side of antenna steering device.
5. anti-interference measuring system according to claim 1, is characterized in that: described signal attenuation device is the metal support of kalamein net, this wire netting ground connection.
6. anti-interference measuring system according to claim 5, is characterized in that: described metal support is square box support body, and described wire netting grid is less than 1mm, and this wire netting connects ground rod ground connection by ground wire.
7. the mobile communication base station electromagnetic radiation from environment space distribution anti-jamming measurement methods based on above-mentioned anti-interference measuring system, comprises the following steps:
1) choose open test site, its physical features is smooth, clear and reverberation, and mobile communication emergency communication is carried car and is located at test site, is positioned at the starting point of test path, the reverse interference without other electromagnetic radiation source of test path;
2) open mobile communication control system, accessing mobile communication network, anti-interference measurement mechanism is placed on test path, its square openings is aimed at duplexed antenna, be initial distance apart from the horizontal range of duplexed antenna, wireless dial-out user terminal and the wireless receiving user terminal be located in signal attenuation device are separately placed on the terminal of test path or farther place, and at test period, wireless dial-out user terminal and wireless receiving user terminal are all in active state;
3) height of adjusting antenna lifting support, make the measuring sonde of rf integration field intensity meter in duplexed antenna and anti-interference measurement mechanism form certain difference in height, adjust duplexed antenna transmit direction by antenna steering device, make transmit direction and the test path shape of antenna at a certain angle, record the measurement result of rf integration field intensity meter in anti-interference measurement mechanism;
4) on test path, anti-interference measurement mechanism is moved by certain step-length, returns to step 3), measure the terminal to test path always.
8. anti-jamming measurement methods according to claim 7, is characterized in that: the reverse interference without other electromagnetic radiation source of described test path refers to other reverse electromagnetic radiation source distance of test path and is less than 0.2V/m as far as the background electric field intensity level that can ensure the anti-interference measurement mechanism that is placed in test path.
9. anti-jamming measurement methods according to claim 7, is characterized in that: described anti-interference measurement mechanism is 5 meters apart from the initial distance of duplexed antenna.
10. anti-jamming measurement methods according to claim 7, it is characterized in that: described certain difference in height is followed successively by 0,3,6,9 ... 18 meters or be followed successively by 0,0.5,1 ... 18 meters, certain angle be followed successively by 0 °, 5 °, 10 ° ... 90 °, certain step-length is 0.5 meter, and the length of test path is 100-200 rice.
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| CN104483583B (en) * | 2014-12-31 | 2017-08-08 | 北京森馥科技股份有限公司 | Vehicular electromagnetic radiation on-line monitoring system |
| CN106130673B (en) * | 2016-08-26 | 2019-05-17 | 北京森馥科技股份有限公司 | The monitoring method of mobile communication base station electromagnetic radiation |
| CN110995371B (en) * | 2019-12-23 | 2021-11-19 | 湘潭大学 | Base station electromagnetic radiation evaluation method in diffraction environment |
| CN111740802A (en) * | 2020-05-19 | 2020-10-02 | 重庆金美通信有限责任公司 | Signal analysis and prediction system and method based on communication network |
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