CN111030761B - Electromagnetic radiation prediction method for mountain base station - Google Patents
Electromagnetic radiation prediction method for mountain base station Download PDFInfo
- Publication number
- CN111030761B CN111030761B CN201911344381.4A CN201911344381A CN111030761B CN 111030761 B CN111030761 B CN 111030761B CN 201911344381 A CN201911344381 A CN 201911344381A CN 111030761 B CN111030761 B CN 111030761B
- Authority
- CN
- China
- Prior art keywords
- base station
- mountain
- measured
- height
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3913—Predictive models, e.g. based on neural network models
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a method for predicting electromagnetic radiation of a mountain area base station, which comprises the steps of firstly providing a base station radiation signal, obtaining power k (h) attenuated when the base station radiation signal passes through a mountain peak obstacle propagation model with the height of h, then counting the number of the mountain peaks between the base station and a point to be measured, calculating to obtain total attenuated power P (h), and finally predicting to obtain a base station electromagnetic radiation value of the point to be measured, wherein the distance from the base station to the point to be measured is r by combining a base station electromagnetic radiation intensity calculation formula S. According to the method, the radiation attenuation power of the mountain base station is calculated according to the height of the mountain peak in the mountain area, and the electromagnetic radiation intensity of the mountain base station can be accurately predicted.
Description
Technical Field
The invention relates to a method for predicting electromagnetic radiation of a mountainous area base station.
Background
The mobile communication technology is rapidly developed, a fifth generation communication system also immediately enters the visual field of people in 2019, more and more base stations are to be built, the base stations in mountainous areas are very much built along with higher and higher coverage requirements, and mountains have certain influence on the propagation energy of electromagnetic radiation of the base stations.
Aiming at the defects in the prior art, the method provides a method for predicting the electromagnetic radiation of a mountain area base station, firstly, a base station radiation signal is provided to pass through a mountain peak obstacle propagation model to obtain the power k (h) attenuated when passing through a mountain peak with the height h, then, the number of the mountain peaks between the base station and a point to be measured is counted, the total attenuation power P (h) is calculated, then, a formula S is calculated by combining the electromagnetic radiation intensity of the base station, and finally, the electromagnetic radiation value of the base station of the point to be measured, which is r away from the base station, is predicted and obtained.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for predicting electromagnetic radiation of a mountain base station.
The technical scheme for solving the technical problems comprises the following steps:
(1) establishing a base station radiation signal propagation model through a mountain peak obstacle:
wherein k (h) is the attenuation power when the base station radiates through a peak with height h, the unit is W, h is the peak height, the unit is m, e is a natural constant, and the value is 2.178;
(2) according to the power k (h) attenuated after the base station radiation passes through the peak with the height h obtained in the step (1), counting the number of the peaks between the base station and the point to be measured to obtain a total attenuation power expression P (h);
(3) and (4) obtaining total attenuation power P (h) according to the step (2), and obtaining the electromagnetic radiation intensity S of the base station to be measured by combining a far-field power density expression.
In the step (2), the power expression of the total attenuation is calculated by combining the base station radiation signal obtained in the step (1) through a mountain obstacle propagation model k (h) as follows:
where P (h) is the power of the total attenuation in W, where n1The number of peaks with the height between the base station and the point to be measured being 40 meters, and hmIs at n1The height of the mth mountain peak is m; n is2The number of peaks with the height between the base station and the point to be measured being higher than or equal to 40 meters, and hiIs at n2The height of the ith peak in m.
In the step (3), by combining the total attenuation power expression p (h) obtained in the step (2), a power density expression with a distance r between the point to be measured and the base station is as follows:
wherein S is the total radiation intensity value of the base station to the point to be measured, and the unit is W/m2R is the distance between the point to be measured and the base station, and the unit is m, G is the antenna gain of the base station, and the unit is dB, and P is the transmitting power of the base station, and the unit is W.
The invention has the beneficial effects that: the method comprises the steps of firstly providing a base station radiation signal, obtaining power k (h) attenuated when the base station radiation signal passes through a peak with the height h through a peak obstacle propagation model, then counting the number of peaks between a base station and a point to be measured, calculating to obtain total attenuated power P (h), and finally predicting to obtain a base station electromagnetic radiation value of the point to be measured, wherein the distance from the base station to the point to be measured is r by combining with a base station electromagnetic radiation intensity calculation formula S. According to the method, the radiation attenuation power of the mountain base station is calculated according to the height of the mountain peak in the mountain area, and the electromagnetic radiation intensity of the mountain base station can be accurately predicted.
Detailed Description
The implementation object of the invention is a base station of FDD-LTE, and the working frequency is as follows: 1980MHz, the test site was a mountainous area around the school, the measuring equipment used a portable spectrum analyzer (KEYSIGHT N9918A, measuring maximum frequency 26.5GHz) and a log periodic antenna (HyperLOG 60180, measuring frequency range 680 MHz-18 GHz), the antenna factor AF was 30dB/m, and the cable loss was 3 dB.
The invention discloses a method for predicting electromagnetic radiation of a mountainous area base station, which comprises the following steps:
(1) establishing a base station radiation signal propagation model through a mountain peak obstacle:
wherein k (h) is the attenuation power when the base station radiates through a peak with height h, the unit is W, h is the peak height, the unit is m, e is a natural constant, and the value is 2.178;
(2) according to the power k (h) of the attenuation of the base station radiation after the peak height h is obtained in the step (1), counting the number of the peaks between the base station and the point to be measured to obtain a total attenuation power expression P (h);
(3) and (3) obtaining the electromagnetic radiation intensity S of the base station to be measured according to the total attenuation power P (h) obtained in the step (2) and a far-field power density expression.
In the step (2), the number of buildings less than or equal to 40m is obtained according to the height and the number of the peaks between the mountain area base station and the point to be measuredQuantity n1Number of buildings n of 1, height 33m, above 40m2And 2, the heights are 57m and 69m respectively, the power expression P (h) of the total attenuation is calculated according to the propagation model k (h) of the base station radiation passing peak obstacles obtained in the step 1, and the power expression P (h) is as follows:
in the step (3), a power expression p (h) of the total attenuation is calculated according to the step (2), where the antenna gain G of the base station of the FDD-LTE is 13dB 20, the transmission power of the base station is 15W, and the power density expression where the distance between the point to be measured and the base station is 45m is as follows:
the predicted power density s obtained from the above predicted point is 0.015W/m2To demonstrate the effectiveness of the invention, we obtained a measurement of 0.013W/m after field measurements with a spectrometer at a location 45m from the base station2，；
Through comparison, the predicted value of the electromagnetic radiation intensity of the mountainous area base station is very consistent with the actual measured value, and the validity of the content of the invention is verified.
Claims (1)
1. A method for predicting electromagnetic radiation of a mountain base station is characterized by comprising the following steps:
(1) establishing a base station radiation signal propagation model through a mountain peak obstacle:
wherein k (h) is the attenuation power when the base station radiates through a peak with height h, the unit is W, h is the peak height, the unit is m, e is a natural constant, and the value is 2.178;
(2) according to the power k (h) of attenuation after the base station radiates through a peak with the height h, which is obtained in the step (1), the number of peaks between the base station and a point to be measured is counted to obtain a total attenuation power expression P (h):
where P (h) is the power of the total attenuation in W, where n1The number of peaks with the height between the base station and the point to be measured being less than 40 meters, and hmIs at n1The height of the mth mountain peak is m; n is2The number of peaks with the height between the base station and the point to be measured being higher than or equal to 40 meters, and hiIs at n2The height of the ith peak is m;
(3) and (3) according to the total attenuated power P (h) obtained in the step (2), combining a far-field power density expression to obtain the electromagnetic radiation intensity S of the base station to be measured:
wherein S is the total radiation intensity value of the base station to the point to be measured, and the unit is W/m2R is the distance between the point to be measured and the base station, and the unit is m, G is the antenna gain of the base station, and the unit is dB, and P is the transmitting power of the base station, and the unit is W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911344381.4A CN111030761B (en) | 2019-12-23 | 2019-12-23 | Electromagnetic radiation prediction method for mountain base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911344381.4A CN111030761B (en) | 2019-12-23 | 2019-12-23 | Electromagnetic radiation prediction method for mountain base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111030761A CN111030761A (en) | 2020-04-17 |
| CN111030761B true CN111030761B (en) | 2022-02-11 |
Family
ID=70211954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911344381.4A Active CN111030761B (en) | 2019-12-23 | 2019-12-23 | Electromagnetic radiation prediction method for mountain base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111030761B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115078850B (en) * | 2022-07-19 | 2023-01-31 | 沸蓝建设咨询有限公司 | Communication base station radiation detection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016196231A1 (en) * | 2015-05-29 | 2016-12-08 | Gradient Dynamics Llc | Systems, apparatuses, and methods for generating and/or utilizing scalar-longitudinal waves |
| CN106454918A (en) * | 2016-09-18 | 2017-02-22 | 广东智环创新环境技术研究有限公司 | Method for predicting electromagnetic radiation level of surrounding environment of TD-LTE mobile communication base station |
| CN106879016A (en) * | 2017-03-28 | 2017-06-20 | 湘潭大学 | A kind of base station electromagnetic radiation Forecasting Methodology based on user distribution |
| CN109459640A (en) * | 2018-12-12 | 2019-03-12 | 湘潭大学 | A kind of scenic spot origin base station electromagnetic radiation prediction technique |
| CN109474946A (en) * | 2018-12-11 | 2019-03-15 | 湘潭大学 | A kind of rural areas base station electromagnetic radiation prediction technique |
| CN109586821A (en) * | 2018-11-27 | 2019-04-05 | 湘潭大学 | A kind of urban area base station electromagnetic radiation prediction technique |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0105910D0 (en) * | 2001-03-09 | 2001-04-25 | Cellular Design Services Ltd | Measurement-based prediction method for radiation path loss |
| CN109547123B (en) * | 2018-12-27 | 2021-06-22 | 湘潭大学 | Electromagnetic radiation prediction method for TD-LTE base station |
-
2019
- 2019-12-23 CN CN201911344381.4A patent/CN111030761B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016196231A1 (en) * | 2015-05-29 | 2016-12-08 | Gradient Dynamics Llc | Systems, apparatuses, and methods for generating and/or utilizing scalar-longitudinal waves |
| CN106454918A (en) * | 2016-09-18 | 2017-02-22 | 广东智环创新环境技术研究有限公司 | Method for predicting electromagnetic radiation level of surrounding environment of TD-LTE mobile communication base station |
| CN106879016A (en) * | 2017-03-28 | 2017-06-20 | 湘潭大学 | A kind of base station electromagnetic radiation Forecasting Methodology based on user distribution |
| CN109586821A (en) * | 2018-11-27 | 2019-04-05 | 湘潭大学 | A kind of urban area base station electromagnetic radiation prediction technique |
| CN109474946A (en) * | 2018-12-11 | 2019-03-15 | 湘潭大学 | A kind of rural areas base station electromagnetic radiation prediction technique |
| CN109459640A (en) * | 2018-12-12 | 2019-03-12 | 湘潭大学 | A kind of scenic spot origin base station electromagnetic radiation prediction technique |
Non-Patent Citations (2)
| Title |
|---|
| The Duty Cycle Analysis for Electromagnetic Field Exposure From WLAN in a Busy Period;wanchun yang 等;《IEEE Transactions on Electromagnetic Compatibility》;20160721;1772-1775 * |
| 通信基站附近电磁环境预测系统的研制;张艳芳;《中国优秀硕士学位论文全文数据库 信息科技辑》;20120415;I136-723 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111030761A (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109738710B (en) | Base station indoor electromagnetic radiation estimation method based on path loss | |
| Greenberg et al. | Comparison of deterministic, empirical and physical propagation models in urban environments | |
| CN107087286A (en) | A kind of indoor electromagnetic radiation Forecasting Methodology of window towards communication base station | |
| CN111030761B (en) | Electromagnetic radiation prediction method for mountain base station | |
| Bilgehan et al. | Multiplicative based path loss model | |
| Emeruwa et al. | Investigation of the variability of signal strength of wireless services in Umuahia, Eastern Nigeria | |
| CN109459640B (en) | Scenic spot area base station electromagnetic radiation prediction method | |
| Montenegro-Villacieros et al. | Clutter loss measurements and simulations at 26 GHz and 40 GHz | |
| Ewona et al. | Measurement and performance assessment of GSM networks using received signal level | |
| CN111010248A (en) | Base station electromagnetic radiation prediction method based on building | |
| CN109474946A (en) | A kind of rural areas base station electromagnetic radiation prediction technique | |
| Li et al. | Measurement and simulation of 28 GHz millimeter-wave propagation characteristics in the corridor environment | |
| Adekunle et al. | Radio wave detection using cost 231-Hata model for wireless network planning; a case study of senate building environs of Unilag, Nigeria | |
| Martinez-Gonzalez et al. | Practical procedure for verification of compliance of digital mobile radio base stations to limitations of exposure of the general public to electromagnetic fields | |
| CN110988498A (en) | Base station electromagnetic radiation prediction method for building dense area | |
| Montenegro-Villacieros et al. | Clutter loss measurements in suburban environment at 26 GHz and 40 GHz | |
| Santos et al. | Channel characterization in V2I system inside a tunnel in 5.8 GHz | |
| Acar et al. | Comparison of computer-based propagation models with experimental data collected in an urban area at 1800 MHz | |
| Elshafie et al. | Measurement of UHF signal propagation loss under different altitude in hilly environment | |
| Shoewu et al. | Path Loss Measurement and Modeling for Lagos State GSM Environments | |
| Naderi et al. | Investigating the Effect of Construction Type of BTS Antennas and the Type of Buildings around Them on the Microwave Radiation-A Case Study in Maragheh City | |
| Ching et al. | Radio propagation simulation and measurement inside a curved and sloped subway tunnel | |
| CN111030770B (en) | Electromagnetic radiation prediction method for mountain area base station | |
| Hou et al. | Radio-wave propagation in a curved tunnel with a semicircle cross section [Measurements Corner] | |
| CN110932804A (en) | Method for predicting average electromagnetic radiation of base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |