CN203012027U - Test system of antenna directional diagram - Google Patents
Test system of antenna directional diagram Download PDFInfo
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- CN203012027U CN203012027U CN 201220632865 CN201220632865U CN203012027U CN 203012027 U CN203012027 U CN 203012027U CN 201220632865 CN201220632865 CN 201220632865 CN 201220632865 U CN201220632865 U CN 201220632865U CN 203012027 U CN203012027 U CN 203012027U
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- 238000012360 testing method Methods 0.000 title claims abstract description 65
- 238000010586 diagram Methods 0.000 title abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims description 20
- 239000013307 optical fiber Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 7
- 230000007175 bidirectional communication Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000010354 integration Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010606 normalization Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a test system of an antenna directional diagram. The test system comprises a tested antenna control module, which mainly comprises a tested antenna and an angle measurement monitoring microcomputer for testing the turning angle of the tested antenna; a source antenna control module which comprise a source antenna and a fiber-to-GPIB circuit which are in bidirectional communication connection through interface conversion devices, the output terminal of the source antenna being connected to the input terminal of the tested antenna; and a test module comprising a tracking receiver, a control computer, a GPIB interface control card and a frequency spectrograph. Automatic test of large-scale boat-carrying antenna directional diagram can be realized. A GPIB interface is employed, which facilitates programming. Various automatic standards and average of multitime measurement requirement can be met, and the measurement is highly precise. Related measurement curve and characteristic point information are printed out by means of visualized report, and functions of a conventional instrument are expanded.
Description
Technical field
The utility model relates to a kind of test macro of antenna radiation pattern.
Background technology
The antenna pattern of antenna is called for short directional diagram, is that the radiation parameter of antenna is with the diagrammatic representation of direction in space variation.Can determine the parameters such as lobe width, beam angle, minor level and direction coefficient of antenna according to antenna radiation pattern.
Traditional radar directional diagram method of testing is selected the overhead inclined mensuration of source radar, and tested antenna is accepting state, can planar freely rotate, and source antenna is emission state, maintains static, and receives/send out to be isogonic line polarization or circular polarisation.In tested antenna rotation process, just can obtain the directional diagram of this antenna after recording data.When the precision of variable attenuator satisfies test request, can by changing the way of variable attenuator damping capacity, make antenna guarantee that in rotation process the indication of frequency spectrograph numerical value is constant.With azimuthal variation, can provide the directional diagram take decibel value as unit according to damping capacity.Its theory diagram as shown in Figure 3, system comprises two modules:
Source antenna module 1: comprise adaptation 3, attenuator 4 and signal source 5;
Target antenna module 2: comprise frequency spectrograph 6, measuring amplifier 7, wave detector 8 and variable attenuator 9.
This traditional manual directional diagram measuring method belongs to static pointwise test, the calculating of the admission of data, the drafting of directional diagram and parameter is all manual mode, its complicated operation, workload is large, complete one-shot measurement and need multiple person cooperational, test is long with the time that the data processing needs, and precision is difficult to improve.The semi-automation test of adopting at present, although can pass through frequency spectrograph real time print figure, but still need many people to coordinate, and exist data to process the problem of inconvenience.
The utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of test macro of full automatic antenna radiation pattern.
The technical solution adopted in the utility model is such: a kind of test macro of antenna radiation pattern, this system comprises: tested antenna control module, source antenna control module and test module.
Described tested antenna control module comprises test antenna and the angle measurement control microcomputer that the corner of test antenna is monitored;
Described source antenna control module comprises that source antenna and optical fiber turn the GPIB circuit, and source antenna is connected the GPIB circuit and connects by the interface switching device two-way communication with optical fiber; The output terminal of source antenna is connected with the input end of test antenna;
Described test module comprises track receiver, controls computing machine, gpib interface control card and frequency spectrograph, and the input port of described track receiver is connected with the output port of test antenna, and output port is connected with the input port of frequency spectrograph; Described gpib interface control card turns the two-way communication of GPIB circuit with optical fiber and is connected, and input interface is connected with the output port of frequency spectrograph, and output port is connected with the input port of controlling computing machine; The control output end mouth of controlling computing machine is connected with the control input end of angle measurement control microcomputer.
In above-mentioned test macro technical scheme, described frequency spectrograph is substituted by the vector analysis instrument.
In above-mentioned test macro technical scheme, described test module also comprises a printer, and this printer is connected to the control computing machine.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1. the technical solution of the utility model has realized the automatic test of large-scale boat-carrying antenna radiation pattern, and the result of test result and traditional static pointwise method test is compared, and conclusion is consistent, reaches test request.
2. the utility model adopts gpib interface, and programming is convenient, can realize various automatic standards, repeatedly measure the requirements such as average, and measuring accuracy is high.
3. the data that gather are carried out Automatic analysis, and with graphical demonstration, print relevant measurement curve and characteristic point information with the form of visual report.
4. be convenient to expand the function of traditional instrument, can complete the integration test of racon, realize various test assignments, and set up and break flexibly, easy to use, have stronger practicality and economic benefit.
Description of drawings
Fig. 1 is the test macro topological diagram of the utility model antenna radiation pattern.
Fig. 2 is the space coordinates of antenna radiation pattern.
Fig. 3 is radar directional diagram test philosophy topological diagram in prior art.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model discloses a kind of test macro of large-scale boat-carrying antenna radiation pattern, system is adopting on the overhead inclined mensuration of source radar basis, use the Instrument Control Technology in virtual instrument, complete the system integration of independent instrument, finally complete integrated Antenna Pattern Measuring Test, from theoretical and in fact made up the conventional test methodologies drawback.Native system is mainly used in the quick and precisely automatic test of boat-carrying large-scale antenna directional diagram, as shown in Figure 1, is the topological diagram of the test macro of a kind of antenna radiation pattern of the utility model.It comprises three modules: this system comprises: tested antenna control module 11, source antenna control module 12 and test module 13.
Described tested antenna control module 11 comprises test antenna 111 and the angle measurement control microcomputer 112 that the corner of test antenna 111 is monitored.Described source antenna control module 12 comprises that source antenna 121 and optical fiber turn GPIB circuit 123, and source antenna 121 is connected GPIB circuit 123 and connects by interface switching device 122 two-way communications with optical fiber; The output terminal of source antenna 121 is connected with the input end of test antenna 111.Described test module 13 comprises track receiver 131, controls computing machine 133, gpib interface control card 134 and frequency spectrograph 135, the input port of described track receiver 131 is connected with the output port of test antenna 111, and output port is connected with the input port of frequency spectrograph 135; Described gpib interface control card 134 turns 123 two-way communications of GPIB circuit with optical fiber and is connected, and input interface is connected with the output port of frequency spectrograph 135, and output port is connected with the input port of controlling computing machine 133; The control output end mouth of controlling computing machine 133 is connected with the control input end of angle measurement control microcomputer 112.
In above-mentioned technical scheme, described frequency spectrograph 135 is substituted by the vector analysis instrument.
In above-mentioned technical scheme, described test module 13 also comprises a printer 132, and this printer 132 is connected to controls computing machine 133.
Whole system can realize automatic test and the calculating of the index of multiple parabola antenna and directional diagram, poor directional diagram, radar axial ratio, radar gain, difference slope, the poor linearity, the first minor level, 3dB point lobe width and 10dB point lobe width.System can realize the automatic test to large-scale boat-carrying antenna radiation pattern.
The specific works principle:
The radiation parameter of antenna comprises power flux-density, field intensity, phase place and the polarization of radiation.Under normal conditions, antenna pattern is measured in the far field, and is expressed as the function of direction in space coordinate.
Space coordinates as shown in Figure 2.Antenna is positioned at true origin, and on the sphere of distance antenna equidistant (r=constant), the field intensity that antenna produces at each point is called field pattern with the change curve of direction in space (θ, Φ).
Antenna is in the electric field intensity of direction (θ, Φ) radiation | E (θ, Φ) | size can be write as:
|E(θ,Φ)|=A
0f(θ,Φ) (1)
In formula, A
0Constant for independent of direction; F (θ, Φ) is the field intensity directivity function.Can be got by (1):
In fact field intensity normalization commonly used represents directional diagram, claims normalized radiation pattern.
In formula, EM is the maximal value of field intensity, and F (θ, Φ) is normalization field intensity directivity function.So survey the normalization field strength pattern, as long as field intensity of each point on the sphere of measuring distance antenna.
The below introduces the Software for Design part of practical this utility model.
1. system consists of.
System adopts the Instrument Control Technology in virtual instrument, and a plurality of independent instrument that can complete fixed function are combined, and makes their exchange message, co-ordination, completes the system integration of independent instrument.System software is divided into three modules: tested antenna control module, source antenna control module and test module.
2. software is realized
Native system is a kind of directional diagram test macro of the virtual instrument technique based on the GPIB general purpose interface bus, adopt the virtual instrument modular design, by RS232, gpib bus, testing tool is controlled, the system software modules respectively with the data communication of corresponding equipment after, namely complete integrated Antenna Pattern Measuring Test.
The beneficial effects of the utility model are:
1. the technical solution of the utility model has realized the automatic test of large-scale boat-carrying antenna radiation pattern.The result of test result and traditional static pointwise method test is compared, and conclusion is consistent, reaches test request.
2. the utility model adopts gpib interface, and programming is convenient, can realize various automatic standards, repeatedly measure the requirements such as average, and measuring accuracy is high.
3. the data that gather are carried out Automatic analysis, and with graphical demonstration, print relevant measurement curve and characteristic point information with the form of visual report.
4. be convenient to expand the function of traditional instrument, can complete the integration test of racon, realize various test assignments, and set up and break flexibly, easy to use, have stronger practicality and economic benefit.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. the test macro of an antenna radiation pattern, is characterized in that, this system comprises: tested antenna control module (11), source antenna control module (12) and test module (13);
Described tested antenna control module (11) comprises test antenna (111) and the angle measurement control microcomputer (112) that the corner of test antenna (111) is monitored;
Described source antenna control module (12) comprises that source antenna (121) and optical fiber turn GPIB circuit (123), and source antenna (121) is connected GPIB circuit (123) and connects by interface switching device (122) two-way communication with optical fiber; The output terminal of source antenna (121) is connected with the input end of test antenna (111);
Described test module (13) comprises track receiver (131), controls computing machine (133), gpib interface control card (134) and frequency spectrograph (135), the input port of described track receiver (131) is connected with the output port of test antenna (111), and output port is connected with the input port of frequency spectrograph (135); Described gpib interface control card (134) turns GPIB circuit (123) two-way communication with optical fiber and is connected, and input interface is connected with the output port of frequency spectrograph (135), and output port is connected with the input port of controlling computing machine (133); The control output end mouth of controlling computing machine (133) is connected with the control input end of angle measurement control microcomputer (112).
2. the test macro of antenna radiation pattern according to claim 1, is characterized in that, described frequency spectrograph (135) is substituted by the vector analysis instrument.
3. the test macro of antenna radiation pattern according to claim 1 and 2, is characterized in that, described test module (13) also comprises a printer (132), and this printer (132) is connected to controls computing machine (133).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220632865 CN203012027U (en) | 2012-11-26 | 2012-11-26 | Test system of antenna directional diagram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220632865 CN203012027U (en) | 2012-11-26 | 2012-11-26 | Test system of antenna directional diagram |
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| CN203012027U true CN203012027U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220632865 Expired - Fee Related CN203012027U (en) | 2012-11-26 | 2012-11-26 | Test system of antenna directional diagram |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569625A (en) * | 2015-01-20 | 2015-04-29 | 中国人民解放军国防科学技术大学 | Large antenna directional diagram measuring method based on rotary auxiliary antenna |
| CN109959902A (en) * | 2018-12-26 | 2019-07-02 | 国网浙江省电力有限公司 | A Radar Polarized Antenna Calibration Curve Test Method |
-
2012
- 2012-11-26 CN CN 201220632865 patent/CN203012027U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569625A (en) * | 2015-01-20 | 2015-04-29 | 中国人民解放军国防科学技术大学 | Large antenna directional diagram measuring method based on rotary auxiliary antenna |
| CN104569625B (en) * | 2015-01-20 | 2015-11-04 | 中国人民解放军国防科学技术大学 | A large-scale antenna pattern measurement method based on a rotatable auxiliary antenna |
| CN109959902A (en) * | 2018-12-26 | 2019-07-02 | 国网浙江省电力有限公司 | A Radar Polarized Antenna Calibration Curve Test Method |
| CN109959902B (en) * | 2018-12-26 | 2021-04-09 | 国网浙江省电力有限公司 | Radar polarization antenna calibration curve test method |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20131126 |