CN113125861A - Space unmanned aerial vehicle antenna near-far field measurement system - Google Patents
Space unmanned aerial vehicle antenna near-far field measurement system Download PDFInfo
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- CN113125861A CN113125861A CN202010040774.2A CN202010040774A CN113125861A CN 113125861 A CN113125861 A CN 113125861A CN 202010040774 A CN202010040774 A CN 202010040774A CN 113125861 A CN113125861 A CN 113125861A
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- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 9
- 230000006978 adaptation Effects 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 3
- 230000005855 radiation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 3
- 101000840267 Homo sapiens Immunoglobulin lambda-like polypeptide 1 Proteins 0.000 description 2
- 102100029616 Immunoglobulin lambda-like polypeptide 1 Human genes 0.000 description 2
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- 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
- G01R29/10—Radiation diagrams of antennas
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- 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
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/10—Simultaneous control of position or course in three dimensions
- G05D1/101—Simultaneous control of position or course in three dimensions specially adapted for aircraft
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Abstract
The invention discloses a space unmanned aerial vehicle antenna near-far field measuring system in the technical field of space unmanned aerial vehicle antenna near-far field measuring systems, wherein a measured object is connected with a ground central control platform in a bidirectional output manner, the ground central control platform is connected with an unmanned aerial vehicle flight control system in a bidirectional output manner, the unmanned aerial vehicle flight control system is connected with the ground central control platform in a bidirectional output manner, the unmanned aerial vehicle flight control system comprises a RTK positioning system matched with an RTK positioning base station, a holder, a flight control unit, a target ball matched with a signal source transmitting module, a probe and a data transmission module, the equipment cost is greatly reduced, the measured object can be accurately positioned by corresponding detecting equipment carried on an unmanned aerial vehicle, meanwhile, the unmanned aerial vehicle can be detected and calibrated according to longitude and latitude, height and three-dimensional attitude information of the unmanned aerial vehicle, and the accurate, the device simplifies the measurement operation and equipment investment and simultaneously has high-precision measurement results.
Description
Technical Field
The invention relates to the technical field of space unmanned aerial vehicle antenna near-far field measurement systems, in particular to a space unmanned aerial vehicle antenna near-far field measurement system.
Background
In recent years, with the wide application of antennas in the fields of communication systems, navigation systems, radar systems, etc., the antenna measurement technology has been rapidly developed, the far field measurement of the antenna is performed in a far field region that satisfies the test distance of the far field of the antenna, thereby directly obtaining the radiation characteristic of the antenna, the antenna measurement technology mainly includes far field measurement and near field measurement, for a low-frequency antenna, it is difficult for the existing facility to directly measure its directional pattern, if an outdoor far field measurement facility is adopted, the area of the required field is very large due to the large wavelength, and now a standard test field satisfying this condition can be rarely found, if a near field measurement darkroom is adopted, because the size of a single antenna is very long, such an antenna or antenna array cannot be accommodated by the ordinary near field measurement darkroom at all, in the prior art, for the low-frequency antenna measurement, the measurable size range is small, the measurement of a large-size antenna or an antenna array cannot be realized, and the requirement on measurement facilities is high, so that a space unmanned aerial vehicle antenna near-far field measurement system is provided.
Disclosure of Invention
The invention aims to provide a space unmanned aerial vehicle antenna near-far field measurement system to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: space unmanned aerial vehicle antenna near far field measurement system, including the two-way output connection measured object of unmanned aerial vehicle flight control system, ground central control platform is connected to the two-way output of measured object, the two-way output connection unmanned aerial vehicle flight control system of ground central control platform, just ground central control platform is connected to the two-way output of unmanned aerial vehicle flight control system, unmanned aerial vehicle flight control system includes the target ball, the probe and the data transmission module with RTK positioning base station looks adaptation's RTK positioning system, cloud platform, flight control unit and signal source emission module looks adaptation.
Preferably, the RTK positioning system, the holder, the target ball and the probe are all electrically connected with a ground central control platform in an output connection mode, the ground central control platform is electrically connected with the flight control unit in an output connection mode, and the ground central control platform is electrically connected with the data transmission module.
Preferably, the cloud platform fixed mounting is in unmanned aerial vehicle's bottom, RTK positioning system fixes at unmanned aerial vehicle's top.
Preferably, the ground central control platform comprises a sweep frequency receiving module and a peak detection module which are electrically connected with the data transmission module, the sweep frequency receiving module and the peak detection module are both electrically connected with the single chip microcomputer controller in output, and the single chip microcomputer controller is electrically connected with the display module in output.
Preferably, the single chip microcomputer controller is composed of a semiconductor integrated microprocessor, a memory, a counter and input and output interfaces, and the single chip microcomputer controller adopts sixteen groups of I/O interfaces.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has reasonable structural design, and the distance between the antenna and the antenna is more than 2D2The system comprises a data transmission module, a ground central control platform, an RTK positioning base station, a tripod head, a signal source transmitting module, a target ball, a data transmission module, a signal source receiving module, a signal transmitting module, a signal receiving module, a signal transmitting module and a data transmitting module, wherein the distance of/lambda or 3 lambda-5 lambda is used for flight sampling, when the unmanned aerial vehicle reaches a preset hovering position, the tripod head is used for ensuring the stability of a transmitting antenna when the unmanned aerial vehicle is influenced by the outside world and vibrates, the signal source transmitting module in a measured object can transmit corresponding radiated electromagnetic wave signals, and the electromagnetic waves can be received through;
2. analyzing and processing the data through a ground central control platform, generating final directional diagram information based on a linear fitting method, and giving the maximum radiation direction of the measured object on a plane to be measured by using a directional diagram, so that magnetic field numerical values of different positions of the measured object can be measured at different distance positions from the measured object through an unmanned aerial vehicle, and then performing near-far field transformation restoration on the acquired data through the ground central control platform by using a Nyquist sampling law to obtain near-far field radiation performance parameters of the measured antenna;
3. can jump off the place restriction through unmanned aerial vehicle in this device, thereby the too big requirement to capital construction structure and equipment of wavelength among the prior art has been reduced, simple equipment has been adopted, reduce equipment cost by a wide margin, corresponding check out test set through carrying on the unmanned aerial vehicle can the measured object realize the accurate positioning, can also carry out unmanned aerial vehicle's longitude and latitude to unmanned aerial vehicle simultaneously, height and three-dimensional attitude information's detection and calibration, cooperation unmanned aerial vehicle carries on measuring equipment and realizes the precision measurement, still possess the high accuracy measuring result when simplifying measurement operation and equipment input.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. an unmanned aerial vehicle flight control system; 2. a measured object; 3. a ground central control platform; 4. an RTK positioning base station; 5. a signal source transmitting module; 6. an RTK positioning system; 7. a holder; 8. a flight control unit; 9. a target ball; 10. a probe; 11. and a data transmission module.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: space unmanned aerial vehicle antenna near far field measurement system, including 1 two-way output connection measured object 2 of unmanned aerial vehicle flight control system, ground central control platform 3 is connected to 2 two-way output of measured object, 3 two-way output connection unmanned aerial vehicle flight control system 1 of ground central control platform, and 1 two-way output connection ground central control platform 3 of unmanned aerial vehicle flight control system, unmanned aerial vehicle flight control system 1 includes RTK positioning system 6 with 4 looks adaptations of RTK location basic station, cloud platform 7, flight control unit 8, and the target ball 9 of 5 looks adaptations of signal source emission module, probe 10 and data transmission module 11.
The RTK positioning system 6, the holder 7, the target ball 9 and the probe 10 are electrically connected with the ground central control platform 3 in an output mode, the ground central control platform 3 is electrically connected with the flight control unit 8 in an output mode, and the ground central control platform 3 is electrically connected with the data transmission module 11;
the tripod head 7 is fixedly installed at the bottom of the unmanned aerial vehicle, the RTK positioning system 6 is fixed at the top of the unmanned aerial vehicle, the tripod head 7 is used for ensuring the stability of the transmitting antenna when the unmanned aerial vehicle is influenced by the outside and vibrates, and the RTK positioning system 6 is used for obtaining the differential longitude and latitude information of the unmanned aerial vehicle relative to the ground station;
the ground central control platform 3 comprises a sweep frequency receiving module and a peak detection module which are electrically connected with the data transmission module 11, the sweep frequency receiving module and the peak detection module are both electrically connected with the single chip microcomputer controller in an output mode, the single chip microcomputer controller is electrically connected with the display module in an output mode, the sweep frequency receiving module can reserve any point of sweep frequency within signal receiving time, each test frequency point is added with a GPS time mark, the peak detection module only stores a receiving power level value and a corresponding frequency value at the peak in single sweep frequency trace measurement, each test value is added with the GPS time mark, then the single chip microcomputer controller can realize data analysis, and the result is displayed on the display module;
the single chip microcomputer controller consists of a semiconductor integrated microprocessor, a memory, a counter, an input interface and an output interface, and the single chip microcomputer controller adopts sixteen groups of I/O interfaces, so that the data analysis efficiency of the single chip microcomputer controller is improved;
the working principle is as follows:
s1: the method comprises the following steps that an unmanned aerial vehicle flight control system 4 is unfolded, a transmitting antenna, namely a measured object 2, is installed, an RTK positioning base station 4 is erected, power-on debugging is carried out, the fact that the working state of the system is normal is determined through flight control software on a ground central control platform 3, the output state of a corresponding output frequency, output power and pulse width signal source is set, and a flight control unit 8 is used for setting that the unmanned aerial vehicle inputs a flight mission mode before carrying out a flight mission each time and comprises a flight area, flight height and flight times;
s2: greater than 2D through range antenna2The method comprises the steps that a/lambda or 3 lambda-5 lambda distance flight sampling is carried out, when an unmanned aerial vehicle reaches a preset spiral position, a cloud deck 7 is used for ensuring stability of a transmitting antenna when the unmanned aerial vehicle vibrates due to external influence, a signal source transmitting module 5 in a measured object 2 can transmit corresponding radiation electromagnetic wave signals, electromagnetic wave receiving can be achieved through a target ball 9, an RTK positioning system 6 is used for obtaining difference longitude and latitude information of the unmanned aerial vehicle relative to a ground station, a data transmission module 11 packs longitude and latitude, height and three-dimensional attitude information of the unmanned aerial vehicle and sends the packed information to the ground central control platform 3, in the process, an RTK positioning base station 4 can calibrate the position of the unmanned aerial vehicle and sends the packed information to the groundThe transmission module 11 transmits the data to the ground central control platform 3;
s3: analyzing and processing the data through the ground central control platform 3, generating final directional diagram information based on a linear fitting method, and giving the maximum radiation direction of the measured object 2 on a plane to be measured by using the directional diagram, so that magnetic field values of different positions of the measured object 2 can be measured at different distance positions from the measured object 2 through the unmanned aerial vehicle, and then performing near-far field transformation restoration on the acquired data through the ground central control platform 3 by using a Nyquist sampling law to obtain near-far field radiation performance parameters of the measured antenna;
s4: can jump off the place restriction through unmanned aerial vehicle in this device to reduced the too big requirement to capital construction structure and equipment of wavelength among the prior art, adopted succinct equipment, reduce equipment cost by a wide margin, can realize accurate positioning through unmanned aerial vehicle by measured object 2, can also carry out unmanned aerial vehicle's longitude and latitude simultaneously, height and three-dimensional attitude information's detection and calibration, cooperation unmanned aerial vehicle carries on measuring equipment and realizes the precision measurement, still possess the high accuracy measuring result when simplifying measurement operation and equipment input.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Space unmanned aerial vehicle antenna near far field measurement system, its characterized in that: including unmanned aerial vehicle flight control system (1) two-way output connection measured object (2), ground central control platform (3) is connected in measured object (2) two-way output, ground central control platform (3) two-way output connection unmanned aerial vehicle flight control system (1), just ground central control platform (3) is connected in unmanned aerial vehicle flight control system (1) two-way output, unmanned aerial vehicle flight control system (1) include with RTK positioning base station (4) looks adaptation RTK positioning system (6), cloud platform (7), flight control unit (8) and target ball (9), probe (10) and data transmission module (11) of signal source emission module (5) looks adaptation.
2. The spatial drone antenna near-far field measurement system of claim 1, characterized in that: the RTK positioning system (6), the holder (7), the target ball (9) and the probe (10) are electrically output and connected with the ground central control platform (3), the ground central control platform (3) is electrically output and connected with the flight control unit (8), and the ground central control platform (3) is electrically connected with the data transmission module (11).
3. The spatial drone antenna near-far field measurement system of claim 2, characterized in that: cloud platform (7) fixed mounting is in unmanned aerial vehicle's bottom, RTK positioning system (6) are fixed at unmanned aerial vehicle's top.
4. The spatial drone antenna near-far field measurement system of claim 1, characterized in that: the ground central control platform (3) comprises a sweep frequency receiving module and a peak detection module which are electrically connected with the data transmission module (11), the sweep frequency receiving module and the peak detection module are both electrically connected with the single chip microcomputer controller in output, and the single chip microcomputer controller is electrically connected with the display module in output.
5. The spatial drone antenna near-far field measurement system of claim 4, characterized in that: the single chip controller is composed of a semiconductor integrated microprocessor, a memory, a counter, an input interface and an output interface, and sixteen groups of I/O interfaces are adopted.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184852A (en) * | 2021-11-30 | 2022-03-15 | 南京理工大学 | Antenna directional pattern active and passive combined type measuring system based on aerial platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975621A (en) * | 2019-04-11 | 2019-07-05 | 西安电子科技大学 | A kind of multi-rotor unmanned aerial vehicle large-scale antenna scene pattern measurement system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109975621A (en) * | 2019-04-11 | 2019-07-05 | 西安电子科技大学 | A kind of multi-rotor unmanned aerial vehicle large-scale antenna scene pattern measurement system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184852A (en) * | 2021-11-30 | 2022-03-15 | 南京理工大学 | Antenna directional pattern active and passive combined type measuring system based on aerial platform |
| CN114184852B (en) * | 2021-11-30 | 2024-06-11 | 南京理工大学 | Aerial platform-based antenna pattern active and passive combined type measurement system |
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Application publication date: 20210716 |