CN113163436A - Method for measuring and calculating space isolation - Google Patents
Method for measuring and calculating space isolation Download PDFInfo
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- CN113163436A CN113163436A CN202110314944.6A CN202110314944A CN113163436A CN 113163436 A CN113163436 A CN 113163436A CN 202110314944 A CN202110314944 A CN 202110314944A CN 113163436 A CN113163436 A CN 113163436A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
The invention discloses a measuring and calculating method of space isolation, which comprises the following steps of selecting an object, selecting two base station antennas needing to be measured, measuring the horizontal distance of the two base station antennas, recording the horizontal distance as X, respectively measuring the heights of the two base station antennas, and marking the heights of the two base station antennas as y1、y2Calculating the height difference Y between two base station antennas1‑y2. The invention can calculate the included angle between the base station antennas and substitute the included angle into the formula for calculating the space isolation, thereby not only measuring and calculating the value of the space isolation, but also knowing the type of the space isolation, and after the value of the space isolation is calculated, the invention also provides a corresponding detection method, which utilizes the sensitivity of the observation receiver to detect whether the value of the space isolation meets the actual requirement, and eliminates the interference condition of the receiver in the detection process, thereby ensuring that the detection result is more accurate.
Description
Technical Field
The invention relates to the technical field of space isolation, in particular to a method for measuring and calculating space isolation.
Background
The space isolation estimation is an important stage of interference judgment, theoretical space isolation is obtained through calculation of the distance between antennas among systems, the main lobe direction and the like, preparation can be made for the following interference certainty calculation, the interference degree of the system is determined theoretically, in mobile communication, the space isolation is the coupling loss of the antennas, in the traditional space isolation measurement and calculation process, the accuracy of the measurement result cannot be improved, and after the measurement is finished, secondary inspection cannot be performed on the measurement value, so that the measurement result can be influenced in the later period.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a method for measuring and calculating spatial isolation.
The invention provides a method for measuring and calculating space isolation, which comprises the following steps:
selecting an object, selecting two base station antennas needing to be measured, measuring the horizontal distance of the two base station antennas, recording the horizontal distance as X, measuring the heights of the two base station antennas respectively, and marking the heights of the two base station antennas as y1、y2Calculating the height difference Y between two base station antennas1-y2；
Calculating the angle, namely, because the horizontal distance X and the height difference Y can be obtained by measurement, a certain included angle exists between the two base station antennas, the included angle is named as theta, and the included angle is calculated by combining a trigonometric function formula
So that a value of θ can be derived;
step three: measuring data, namely measuring the gain of a transmitting antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the transmitting antenna as Gt, measuring the gain of a receiving antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the receiving antenna as Gr, and measuring the wavelength corresponding to the central frequency as lambda;
step four: calculation of formula, using formula
And calculating a numerical value of the space isolation degree, wherein the calculation steps are as follows:
preferably, the value of the included angle θ calculated in the second step is in the range of 0 ° to 90 °, and the measured spatial interval is a horizontal interval when θ is 0 °, a vertical interval when θ is 90 °, and an oblique interval when 0 ° < θ < 90 °.
Preferably, after the spatial separation degree in the fourth step is calculated, in order to detect whether the spatial separation degree meets the condition, the sensitivity of the receiver may be observed, during which in-band interference and out-of-band channel noise are filtered out first, and when the two interference items are eliminated, the sensitivity of the receiver is observed to judge whether the spatial separation degree meets the condition, because out-of-band signals or in-band strong signals generated by transmitters located at the same base station or nearby base stations will raise or block the noise floor of the receiver.
Preferably, the antenna gain measured in step three is operated as follows:
a. firstly, radiating an antenna by using an approximately ideal power supply, adding power, then testing the received power by using a sweep generator or receiving equipment at a position with a certain distance from the antenna, wherein the measurement times are more than three times, averaging the power measured for multiple times, and recording the power as P1；
b. Changing to the antenna to be tested, adding the same power, repeating the test at the same position for more than three times, averaging the power measured for multiple times, and recording the power as P2；
c. And (3) calculating gain:
the receiving antenna gain and the transmitting antenna gain are calculated using the formula.
The invention has the beneficial effects that:
the invention firstly calculates the included angle between the base station antennas and substitutes the included angle into a formula for calculating the space isolation, thereby not only measuring and calculating the value of the space isolation, but also knowing the type of the space isolation, and after the value of the space isolation is calculated, a corresponding detection method is also provided, whether the value of the space isolation meets the actual requirement is detected by observing the sensitivity of the receiver, and the interference condition of the receiver in the detection process is eliminated, thereby leading the detection result to be more accurate.
Drawings
Fig. 1 is a schematic flow structure diagram of a method for measuring and calculating spatial isolation according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Embodiment 1, horizontal isolation, referring to fig. 1, a method for measuring and calculating spatial isolation, comprising the following steps:
selecting an object, selecting two base station antennas needing to be measured, measuring the horizontal distance of the two base station antennas, recording the horizontal distance as X, measuring the heights of the two base station antennas respectively, and marking the heights of the two base station antennas as y1、y2Calculating the height difference Y between two base station antennas1-y2；
Calculating the angle, namely, because the horizontal distance X and the height difference Y can be obtained by measurement, a certain included angle exists between the two base station antennas, the included angle is named as theta, and the included angle is calculated by combining a trigonometric function formula
The calculated included angle theta is in the range of 0 deg. -90 deg., and when theta is 0 deg., the measured spatial separation is horizontal separation;
step three: measuring data, namely measuring the gain of a transmitting antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the transmitting antenna as Gt, measuring the gain of a receiving antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the receiving antenna as Gr, and measuring the wavelength corresponding to the central frequency as lambda;
the antenna gain is measured, and the operation method is as follows:
a. firstly, radiating an antenna by using an approximately ideal power supply, adding power, then testing the received power by using a sweep generator or receiving equipment at a position with a certain distance from the antenna, wherein the measurement times are more than three times, averaging the power measured for multiple times, and recording the power as P1；
b. Changing to the antenna to be tested, adding the same power, repeating the test at the same position for more than three times, averaging the power measured for multiple times, and recording the power as P2；
c. And (3) calculating gain:
calculating the gain of the receiving antenna and the gain of the transmitting antenna by using the formula;
step four: calculation of formula, using formula
And calculating a numerical value of the space isolation degree, wherein the calculation steps are as follows:
after the spatial isolation is calculated, in order to detect whether the spatial isolation meets the condition, the sensitivity of the receiver can be observed, in the process, in-band interference and out-of-band channel noise are filtered, and when the two interference items are eliminated, the sensitivity of the receiver is observed to judge whether the spatial isolation meets the condition, because out-of-band signals or in-band strong signals generated by transmitters located in the same base station or nearby base stations and the like cause the noise bottom of the receiver to be lifted or blocked.
Embodiment 2, oblique isolation, referring to fig. 1, a method for measuring and calculating spatial isolation, comprising the following steps:
selecting an object, selecting two base station antennas needing to be measured, measuring the horizontal distance between the two base station antennas, and levelingThe distance is marked as X, then the heights of the two base station antennas are respectively measured, and the heights of the two base station antennas are marked as y1、y2Calculating the height difference Y between two base station antennas1-y2；
Calculating the angle, namely, because the horizontal distance X and the height difference Y can be obtained by measurement, a certain included angle exists between the two base station antennas, the included angle is named as theta, and the included angle is calculated by combining a trigonometric function formula
The calculated included angle theta is in the range of 0-90 DEG, and when theta is more than 0 DEG and less than 90 DEG, the measured spatial interval is the inclination interval;
step three: measuring data, namely measuring the gain of a transmitting antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the transmitting antenna as Gt, measuring the gain of a receiving antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the receiving antenna as Gr, and measuring the wavelength corresponding to the central frequency as lambda;
the antenna gain is measured, and the operation method is as follows:
a. firstly, radiating an antenna by using an approximately ideal power supply, adding power, then testing the received power by using a sweep generator or receiving equipment at a position with a certain distance from the antenna, wherein the measurement times are more than three times, averaging the power measured for multiple times, and recording the power as P1；
b. Changing to the antenna to be tested, adding the same power, repeating the test at the same position for more than three times, averaging the power measured for multiple times, and recording the power as P2；
c. And (3) calculating gain:
calculating the gain of the receiving antenna and the gain of the transmitting antenna by using the formula;
step four: calculation of formula, using formula
And calculating a numerical value of the space isolation degree, wherein the calculation steps are as follows:
after the spatial isolation is calculated, in order to detect whether the spatial isolation meets the condition, the sensitivity of the receiver can be observed, in the process, in-band interference and out-of-band channel noise are filtered, and when the two interference items are eliminated, the sensitivity of the receiver is observed to judge whether the spatial isolation meets the condition, because out-of-band signals or in-band strong signals generated by transmitters located in the same base station or nearby base stations and the like cause the noise bottom of the receiver to be lifted or blocked.
Embodiment 3, vertical isolation, referring to fig. 1, a method for measuring and calculating spatial isolation, comprising the following steps:
selecting an object, selecting two base station antennas needing to be measured, measuring the horizontal distance of the two base station antennas, recording the horizontal distance as X, measuring the heights of the two base station antennas respectively, and marking the heights of the two base station antennas as y1、y2Calculating the height difference Y between two base station antennas1-y2；
Calculating the angle, namely, because the horizontal distance X and the height difference Y can be obtained by measurement, a certain included angle exists between the two base station antennas, the included angle is named as theta, and the included angle is calculated by combining a trigonometric function formula
The calculated included angle theta is in the range of 0 deg. -90 deg., and the measured spatial separation is the vertical separation when theta is 90 deg.;
step three: measuring data, namely measuring the gain of a transmitting antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the transmitting antenna as Gt, measuring the gain of a receiving antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the receiving antenna as Gr, and measuring the wavelength corresponding to the central frequency as lambda;
the antenna gain is measured, and the operation method is as follows:
a. firstly, radiating an antenna by using an approximately ideal power supply, adding power, then testing the received power by using a sweep generator or receiving equipment at a position with a certain distance from the antenna, wherein the measurement times are more than three times, averaging the power measured for multiple times, and recording the power as P1；
b. Changing to the antenna to be tested, adding the same power, repeating the test at the same position for more than three times, averaging the power measured for multiple times, and recording the power as P2；
c. And (3) calculating gain:
calculating the gain of the receiving antenna and the gain of the transmitting antenna by using the formula;
step four: calculation of formula, using formula
And calculating a numerical value of the space isolation degree, wherein the calculation steps are as follows:
after the spatial isolation is calculated, in order to detect whether the spatial isolation meets the condition, the sensitivity of the receiver can be observed, in the process, in-band interference and out-of-band channel noise are filtered, and when the two interference items are eliminated, the sensitivity of the receiver is observed to judge whether the spatial isolation meets the condition, because out-of-band signals or in-band strong signals generated by transmitters located in the same base station or nearby base stations and the like cause the noise bottom of the receiver to be lifted or blocked.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A method for measuring and calculating space isolation is characterized by comprising the following steps:
selecting an object, selecting two base station antennas needing to be measured, measuring the horizontal distance of the two base station antennas, recording the horizontal distance as X, measuring the heights of the two base station antennas respectively, and marking the heights of the two base station antennas as y1、y2Calculating the height difference Y between two base station antennas1-y2；
Calculating the angle, namely, because the horizontal distance X and the height difference Y can be obtained by measurement, a certain included angle exists between the two base station antennas, the included angle is named as theta, and the included angle is calculated by combining a trigonometric function formula
So that a value of θ can be derived;
step three: measuring data, namely measuring the gain of a transmitting antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the transmitting antenna as Gt, measuring the gain of a receiving antenna of the base station antenna by using the calibrated sweep generator, recording the gain of the receiving antenna as Gr, and measuring the wavelength corresponding to the central frequency as lambda;
step four: calculation of formula, using formula
And calculating a numerical value of the space isolation degree, wherein the calculation steps are as follows:
2. the method for measuring and calculating spatial separation according to claim 1, wherein the angle θ calculated in step two is in a range of 0 ° -90 °, and when θ is 0 °, the measured spatial separation is horizontal separation, when θ is 90 °, the measured spatial separation is vertical separation, and when θ < 0 ° < θ < 90 °, the measured spatial separation is oblique separation.
3. The method for measuring and calculating spatial isolation according to claim 1, wherein after the spatial isolation of step four is calculated, in order to detect whether the spatial isolation satisfies the condition, the sensitivity of the receiver can be observed, during which the in-band interference and the out-of-band channel noise are filtered, and when the two interferences are eliminated, the sensitivity of the receiver is observed to determine whether the spatial isolation satisfies the condition, because the out-of-band signal or the in-band strong signal generated by the transmitter located in the same base station or a nearby base station will raise or block the receiver noise floor.
4. The method for measuring and calculating spatial isolation according to claim 1, wherein the antenna gain measured in the third step is operated as follows:
a. firstly, radiating an antenna by using an approximately ideal power supply, adding power, then testing the received power by using a sweep generator or receiving equipment at a position with a certain distance from the antenna, wherein the measurement times are more than three times, averaging the power measured for multiple times, and recording the power as P1；
b. Changing to the antenna to be tested, adding the same power, repeating the test at the same position for more than three times, averaging the power measured for multiple times, and recording the power as P2；
c. And (3) calculating gain:
the receiving antenna gain and the transmitting antenna gain are calculated using the formula.
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| CN202110314944.6A CN113163436A (en) | 2021-03-24 | 2021-03-24 | Method for measuring and calculating space isolation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793140A (en) * | 2022-06-21 | 2022-07-26 | 深圳粤讯通信科技有限公司 | 5G antenna interface board port isolation measurement system |
| CN115118364A (en) * | 2022-08-02 | 2022-09-27 | 三峡智控科技有限公司 | Method and system for analyzing and early warning interference of different 5G signal systems |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486775A (en) * | 2015-01-08 | 2015-04-01 | 西安电子科技大学 | Active antenna array beam optimization method based on tracking and prediction of user position |
| CN109980331A (en) * | 2019-03-27 | 2019-07-05 | 吉林吉大通信设计院股份有限公司长春分院 | A kind of aerial mounting structure and communication tower |
| CN110346655A (en) * | 2019-07-12 | 2019-10-18 | 嘉兴诺艾迪通信科技有限公司 | A kind of the polarization parameter measuring device and method of antenna |
| CN111371515A (en) * | 2020-03-12 | 2020-07-03 | 电子科技大学 | Equivalent test method for isolation between base station antennas |
-
2021
- 2021-03-24 CN CN202110314944.6A patent/CN113163436A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486775A (en) * | 2015-01-08 | 2015-04-01 | 西安电子科技大学 | Active antenna array beam optimization method based on tracking and prediction of user position |
| CN109980331A (en) * | 2019-03-27 | 2019-07-05 | 吉林吉大通信设计院股份有限公司长春分院 | A kind of aerial mounting structure and communication tower |
| CN110346655A (en) * | 2019-07-12 | 2019-10-18 | 嘉兴诺艾迪通信科技有限公司 | A kind of the polarization parameter measuring device and method of antenna |
| CN111371515A (en) * | 2020-03-12 | 2020-07-03 | 电子科技大学 | Equivalent test method for isolation between base station antennas |
Non-Patent Citations (1)
| Title |
|---|
| 豆丁账号LHWR9093: "《空间隔离度计算[方案]》", 《豆丁网》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793140A (en) * | 2022-06-21 | 2022-07-26 | 深圳粤讯通信科技有限公司 | 5G antenna interface board port isolation measurement system |
| CN114793140B (en) * | 2022-06-21 | 2022-09-13 | 深圳粤讯通信科技有限公司 | 5G antenna interface board port isolation measurement system |
| CN115118364A (en) * | 2022-08-02 | 2022-09-27 | 三峡智控科技有限公司 | Method and system for analyzing and early warning interference of different 5G signal systems |
| CN115118364B (en) * | 2022-08-02 | 2022-12-13 | 三峡智控科技有限公司 | Method and system for analyzing and early warning interference of 5G signal different system |
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