CN105467380A - Method for measuring azimuth angle with application of sum and difference beam antennas and artificial satellite signals - Google Patents
Method for measuring azimuth angle with application of sum and difference beam antennas and artificial satellite signals Download PDFInfo
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- CN105467380A CN105467380A CN201510979515.5A CN201510979515A CN105467380A CN 105467380 A CN105467380 A CN 105467380A CN 201510979515 A CN201510979515 A CN 201510979515A CN 105467380 A CN105467380 A CN 105467380A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
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Abstract
The invention provides a method for measuring an azimuth angle with application of sum and difference beam antennas and artificial satellite signals, wherein antenna units or antenna arrays which are used to generate two forms of wave beams including a sum beam and a difference beam are arranged at a base station antenna position as receiving antennas; the antennas are used to simultaneously or successively receive the signals of an artificial satellite; intensity changes of the output signals of the two wave beams are compared; and a direction faced by a receiving trough of the different beam is the azimuth angle of the satellite when the difference between the output signal intensity of the different beam and the output signal intensity of the sum beam reaches a maximum value. The method provided by the invention replaces the sun by the artificial satellite such as a GPS and a Beidou satellite and takes the satellite as a signal source, wherein a carrier phase of the satellite signals needs not to be measured, and the system has the advantages that the structure is simple, and the cost is greatly reduced.
Description
Technical field
The invention belongs to antenna technical field, particularly a kind of method utilizing He er bu tong antenna and satellite signal to carry out measurement of azimuth.
Background technology
The position angle of antenna for base station refer to aerial radiation actinal surface towards.In the network optimization process of mobile communication, the position angle of antenna for base station and the angle of pitch are two most important Antenna Operation parameters.Existing antenna for base station position angle method of testing has two large classes in the world, and a class utilizes magnetic compass, another kind ofly utilizes gps satellite signal.The principle of work of magnetic compass is the directivity utilizing terrestrial magnetic field.Utilize magnetic compass to carry out direction finding and have that cost is low, the simple advantage of system.But magnetic compass is easily subject to the impact of iron and steel around, and measuring accuracy is lower.Gps satellite direction finding utilizes two gps antennas to receive the signal of a space centre halfback group of stars, by measuring the carrier phase difference that each satellite outputs signal on two gps antennas.Combine the measurement data for multiple satellite again, the position angle of antenna for base station can be calculated.The advantage of gps satellite direction finding is that precision is high, and shortcoming is that system cost is high, size is large.
Recently occurred utilizing sunshine to carry out the invention of direction finding.This invention utilizes the accuracy of solar orbit, realizes the high-acruracy survey of antenna azimuth, can meet or exceed the measuring accuracy of double antenna GPS direction-finding equipment.The program adopts discontinuous direction finding scheme, and only measure on discrete time point, compare with the position of sun testing apparatus of existing continuous coverage mode, precision increases substantially, and cost significantly reduces.Program structure is simple, volume is little, cost is low.The shortcoming of sunshine direction finding is exactly need good illumination just can position, and in the area that illumination condition is poor, locating speed is slower.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of method utilizing He er bu tong antenna and satellite signal to carry out measurement of azimuth, the artificial satellite such as GPS, the Big Dipper is utilized to replace the sun as signal source, compared with existing GPS, Big Dipper direction finding scheme, the present invention does not need the carrier phase of instrumented satellite signal, system architecture is simple, and cost significantly reduces.
To achieve these goals, the technical solution used in the present invention is:
A kind of method utilizing He er bu tong antenna and satellite signal to carry out measurement of azimuth, base station antenna positions arrange for generation of with the antenna element of wave beam 1 and difference beam 2 two kinds of form wave beams or aerial array as receiving antenna, the signal of artificial satellite 3 is received simultaneously or successively, the relatively output signal strength change of two wave beams, difference beam 2 output signal strength with and the difference of output signal strength of wave beam 1 reaches maximum time, the reception concave point 4 of difference beam 2 faced by direction be exactly the position angle of satellite.
In Practical Project, the angle received corresponding to concave point 4 can be alignd with the position angle of antenna for base station, and the position angle now corresponding to concave point 4 just equals the position angle of antenna for base station.Also a fixed angle difference can be there is with the position angle of antenna for base station in the angle received corresponding to concave point 4.After now recording the position angle received corresponding to concave point 4, add or deduct this fixed angle poor, just can obtain the position angle of antenna for base station.
By adopting different feeding classification to produce to two same antennas and wave beam 1 and difference beam 2; Or produced and wave beam 1 and difference beam 2 by two kinds of patterns of an antenna, or, produced and wave beam 1 and difference beam 2 by two or more different antenna.
Such as, receiving antenna can adopt following structure:
At the edge of one piece of sheet metal 7, place dipole antenna 1 and dipole antenna 29, when dipole antenna 1 and dipole antenna 29 are by homophase feed, the synthesis wave beam of two antennas is and wave beam 1, when being inverted feed, the synthesis wave beam of two antennas is difference beam 2.
Described azimuthal measuring accuracy is determined by the degree of depth of the reception concave point 4 of difference beam 2 and width, and what receive that concave point 4 designs is more precipitous, then measuring accuracy is higher.
Compared with prior art, the invention has the beneficial effects as follows:
1. the present invention utilizes the accuracy of satellite orbit, realizes azimuthal high-acruracy survey.
2. the present invention is not by the impact of surrounding iron and steel, and measuring accuracy is far above magnetic compass direction finding sensor.
3. the present invention does not need to adopt sunshine as signal source, not by weather effect, and can all weather operations.
4. structure of the present invention is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram utilizing He er bu tong antenna and satellite signal to carry out measurement of azimuth.
Fig. 2 is when satellite is in different azimuth and wave beam, difference beam output signal strength curve.
Fig. 3 is a kind of specific implementation of the present invention and wave beam, difference beam.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further detailed.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Artificial satellite and the sun similar, there is locus and continue mobile and that track is accurately known feature.Be there is by design the antenna of short transverse angular selectivity, the event of any artificial satellite by antenna specific direction just can be detected.Due to the angle of pitch of artificial satellite and position angle known, so the position angle of antenna can be calculated.And the relative position relation of antenna and equipment is known, the position angle of equipment just can be calculated further.
As shown in Figure 1, a kind of method utilizing He er bu tong antenna and satellite signal to carry out measurement of azimuth of the present invention, first base station antenna positions arrange for generation of with the antenna element of wave beam 1 and difference beam 2 two kinds of form wave beams or aerial array as receiving antenna, the signal of artificial satellite 3 is received simultaneously.
In Practical Project, namely can to two same antennas adopt different feeding classification to produce and, difference beam, wherein because the difference of amplitude, phase place can make the concave point orientation of generation change; Also can by two of an antenna kind of pattern produce and, difference beam; Also can be produced by two different antennas and, difference beam, as long as antenna directional diagram with concave point can as difference beam; Also can be produced by more antenna element composition aerial array and, difference beam.
Then utilize the signal of this receiving antenna to the aerial artificial satellite 3 in sky to receive, due to different with the pattern shapes of wave beam 1 and difference beam 2, for same satellite, the output signal strength of two kinds of wave beams changes with the difference of satellite position.By the change of the output signal absolute strength and relative intensity that compare two wave beams, just can judge that whether satellite is by the reception concave point 4 of difference beam 2.
Particularly, as shown in Figure 2, when satellite moves in space, and the Received signal strength amplitude curve 5 of wave beam 1, the Received signal strength amplitude curve 6 of difference beam 2.Receive concave point 4 because difference beam 2 exists, when the passing of satelline receives the dead ahead of concave point 4, and wave beam 1, difference beam 2 amplitude output signal difference reach maximum.Because the orbit parameter of satellite is known, so now the position angle of satellite is known, the reception concave point 4 of difference beam 2 faced by direction be exactly the position angle of satellite.
Direction finding precision of the present invention is determined by the degree of depth of the reception concave point 4 of difference beam 2 and width.Due to the reception concave point of difference beam 2 can design very precipitous, so the present invention has very high direction finding precision.Be used for judging that satellite is in the front of difference beam 2 with wave beam 1, fall to get rid of the received signal strength produced when satellite is in other direction of difference beam 2.
For conventional gps antenna, if be greater than thresholding with the signal of wave beam 1, as CN value is greater than 50dB (concrete thresholding depends on system), illustrate that the rough position of satellite is in the high-gain overlay area with wave beam 1.And if now the CN output valve of difference beam 2 is less than 30dB, the relative difference arrival 20dB that two wave beams export, illustrates that satellite is in the reception concave point 4 of difference beam 2.If now the deflection of satellite is
and the angle of pitch is θ.So the position angle of reception concave point 4 correspondence of antenna difference beam 2 is exactly
pitching angle theta can be used for improving measuring accuracy further, and the angle of pitch is too high, too low all can affect precision, usually should choose the satellite of pitching angle theta between 15 degree to 60 degree and measure.
For the conventional receiver such as GPS, the Big Dipper, the output signal of receiver comprises the signal intensity CN value of every satellite, the pitching angle theta that satellite is current and position angle
so do not need to carry out orbit computation separately.Can directly judge according to CN value, then with the position angle that receiver exports
as concave point 4 corresponding some position angle.
Shown in Fig. 3 is a kind of specific implementation of a present invention and wave beam 1 He er bu tong 2.At the edge of one piece of sheet metal 7, place dipole antenna 1 and dipole antenna 29, when dipole antenna 1 and dipole antenna 29 are by homophase feed, the synthesis wave beam of two antennas is and wave beam 1, when being inverted feed, the synthesis wave beam of two antennas is difference beam 2.
Claims (5)
1. the method utilizing He er bu tong antenna and satellite signal to carry out measurement of azimuth, it is characterized in that, base station antenna positions arrange for generation of with the antenna element of wave beam (1) and difference beam (2) two kinds of form wave beams or aerial array as receiving antenna, the signal of artificial satellite (3) is received simultaneously or successively, the relatively output signal strength change of two wave beams, when the output signal strength of difference beam (2) reaches maximum with the difference of the output signal strength with wave beam (1), the reception concave point (4) of difference beam (2) faced by direction be exactly the position angle of satellite.
2. utilize He er bu tong antenna and satellite signal to carry out the method for measurement of azimuth according to claim 1, it is characterized in that, described receiving antenna adopts following structure:
At the edge of one piece of sheet metal (7), place dipole antenna one (8) and dipole antenna two (9), when dipole antenna one (8) and dipole antenna two (9) are by homophase feed, the synthesis wave beam of two antennas is and wave beam (1), when being inverted feed, the synthesis wave beam of two antennas is difference beam (2).
3. utilize He er bu tong antenna and satellite signal to carry out the method for measurement of azimuth according to claim 1, it is characterized in that, adopt different feeding classification to produce to two same antennas and wave beam (1) and difference beam (2).
4. utilize He er bu tong antenna and satellite signal to carry out the method for measurement of azimuth according to claim 1, it is characterized in that, produced and wave beam (1) and difference beam (2) by two kinds of patterns of an antenna, or, produced and wave beam (1) and difference beam (2) by two or more different antenna.
5. utilize He er bu tong antenna and satellite signal to carry out the method for measurement of azimuth according to claim 1, it is characterized in that, described azimuthal measuring accuracy is determined by the degree of depth of the reception concave point (4) of difference beam (2) and width, it is more precipitous that reception concave point (4) designs, then measuring accuracy is higher.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510979515.5A CN105467380A (en) | 2015-12-23 | 2015-12-23 | Method for measuring azimuth angle with application of sum and difference beam antennas and artificial satellite signals |
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| CN201510979515.5A CN105467380A (en) | 2015-12-23 | 2015-12-23 | Method for measuring azimuth angle with application of sum and difference beam antennas and artificial satellite signals |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289154A (en) * | 2016-07-19 | 2017-01-04 | 中国科学院重庆绿色智能技术研究院 | A kind of communication base station antenna azimuth monitoring method |
| CN107888237A (en) * | 2016-09-30 | 2018-04-06 | 北京三星通信技术研究有限公司 | It is initially accessed the method, base station equipment and user equipment with Stochastic accessing |
| CN108205137A (en) * | 2016-12-20 | 2018-06-26 | 北京行易道科技有限公司 | Lens radar and the vehicles |
| CN109658532A (en) * | 2019-02-20 | 2019-04-19 | 深圳成谷科技有限公司 | A kind of ETC charging method and system based on multibeam antenna |
| CN110266616A (en) * | 2019-05-28 | 2019-09-20 | 上海交通大学 | A kind of channel estimation methods based on difference beam angle-measuring method |
| CN110869806A (en) * | 2017-05-17 | 2020-03-06 | 方达齐奥内连接公司-引导社会创新知识 | Apparatus and method for receiving satellite positioning signals |
| WO2024037069A1 (en) * | 2022-08-16 | 2024-02-22 | 深圳Tcl数字技术有限公司 | Method and apparatus for monitoring orientation of signal source, storage medium, and smart device |
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| JP3552202B2 (en) * | 1999-08-04 | 2004-08-11 | 株式会社東芝 | Direction measurement device |
| US6937186B1 (en) * | 2004-06-22 | 2005-08-30 | The Aerospace Corporation | Main beam alignment verification for tracking antennas |
| WO2008082434A2 (en) * | 2006-05-31 | 2008-07-10 | Lockheed Martin Corporation | Method and apparatus for detecting em energy using surface plasmon polaritons |
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| JP3552202B2 (en) * | 1999-08-04 | 2004-08-11 | 株式会社東芝 | Direction measurement device |
| US20030218569A1 (en) * | 2001-09-28 | 2003-11-27 | Matsushita Electric Industrial Co., Ltd. | Radio direction and position finding apparatus |
| US6937186B1 (en) * | 2004-06-22 | 2005-08-30 | The Aerospace Corporation | Main beam alignment verification for tracking antennas |
| WO2008082434A2 (en) * | 2006-05-31 | 2008-07-10 | Lockheed Martin Corporation | Method and apparatus for detecting em energy using surface plasmon polaritons |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289154A (en) * | 2016-07-19 | 2017-01-04 | 中国科学院重庆绿色智能技术研究院 | A kind of communication base station antenna azimuth monitoring method |
| CN107888237A (en) * | 2016-09-30 | 2018-04-06 | 北京三星通信技术研究有限公司 | It is initially accessed the method, base station equipment and user equipment with Stochastic accessing |
| CN107888237B (en) * | 2016-09-30 | 2022-06-21 | 北京三星通信技术研究有限公司 | Initial access and random access method, base station equipment and user equipment |
| CN108205137A (en) * | 2016-12-20 | 2018-06-26 | 北京行易道科技有限公司 | Lens radar and the vehicles |
| CN108205137B (en) * | 2016-12-20 | 2024-03-01 | 北京行易道科技有限公司 | Lens radar and vehicle |
| CN110869806A (en) * | 2017-05-17 | 2020-03-06 | 方达齐奥内连接公司-引导社会创新知识 | Apparatus and method for receiving satellite positioning signals |
| CN109658532A (en) * | 2019-02-20 | 2019-04-19 | 深圳成谷科技有限公司 | A kind of ETC charging method and system based on multibeam antenna |
| CN110266616A (en) * | 2019-05-28 | 2019-09-20 | 上海交通大学 | A kind of channel estimation methods based on difference beam angle-measuring method |
| CN110266616B (en) * | 2019-05-28 | 2020-06-19 | 上海交通大学 | Channel estimation method based on sum and difference beam angle measurement method |
| WO2024037069A1 (en) * | 2022-08-16 | 2024-02-22 | 深圳Tcl数字技术有限公司 | Method and apparatus for monitoring orientation of signal source, storage medium, and smart device |
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Application publication date: 20160406 |