CN112327061A - Horn antenna directional pattern calibration system and method - Google Patents
Horn antenna directional pattern calibration system and method Download PDFInfo
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- CN112327061A CN112327061A CN202011005003.6A CN202011005003A CN112327061A CN 112327061 A CN112327061 A CN 112327061A CN 202011005003 A CN202011005003 A CN 202011005003A CN 112327061 A CN112327061 A CN 112327061A
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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
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
Abstract
The embodiment of the invention discloses a horn antenna directional diagram calibration system, which comprises: the device comprises a scanning probe, a rectangular scanning plane, a horn antenna to be tested, a vector network analyzer, a spread spectrum module, a control computer and an optical platform, wherein the scanning probe and the horn antenna to be tested are simultaneously oppositely arranged and coaxially erected on an antenna frame under a horizontal polarization condition, and the antenna frame is erected on the optical platform; the control computer is used for controlling a scanning frame for erecting the scanning probe, so that the scanning probe performs bow-shaped movement along a first direction parallel to the surface of the optical platform and a second direction vertical to the first direction in a stepping manner with a certain value to scan the electromagnetic wave signals on each grid point on the rectangular scanning plane; the vector network analyzer is used for receiving the electromagnetic wave signals passing through the spread spectrum module, measuring the amplitude and phase values of the frequency points to be measured on the rectangular scanning plane and recording the amplitude and phase values; and the control computer converts the measured value and the corresponding position coordinate into a far-field directional pattern of the horn antenna to be detected.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a system and method for calibrating a horn antenna pattern.
Background
The IEEE Std 149 standard specifies an antenna pattern calibration method, in which antenna calibration is performed in a microwave anechoic chamber, a transmitting antenna and a receiving antenna are directly opposite to each other and coaxially erected on an antenna support, the distance between the transmitting antenna and the receiving antenna is d, and d satisfies a far-field condition. Adjusting the phase center of the horn antenna to be measured to coincide with the center of the turntable,
the amplitude directional diagram is measured by adopting the IEEE Std 149 standard for the horn antenna of 75 GHz-110 GHz, and the following defects exist:
1. when the horn antenna directional diagram to be measured is carried out each time, the phase center of the antenna under the frequency point needs to be found, the phase center is overlapped with the rotating shaft center of the rotating platform, the position of the phase center can be found only by repeatedly moving for many times under the general condition, and therefore time consumption is very long.
2. The phase centers of the horn antennas to be tested at each test frequency point are different, so that when the amplitude directional diagram is measured at each test frequency point, the operation of repeatedly searching the phase centers at each test frequency point is required, the process is very complicated and time-consuming, and if the directional diagrams at more test frequency points are tested, the efficiency is lower.
3. A75 GHz-110 GHz far-field measurement directional diagram is long in distance between a transmitting antenna and a receiving antenna, signal attenuation is large under the unit distance of a 75 GHz-110 GHz frequency band, so that a measurement signal is small, in addition, a main beam of a horn antenna with high frequency is narrow, strict alignment of the transmitting and receiving antennas is required, and due to the fact that the size of a horn is small, remote alignment is difficult, and the uncertainty of antenna directional diagram measurement is increased due to the factors.
Disclosure of Invention
To solve one of the above problems, a first embodiment of the present invention provides a horn antenna pattern calibration system, including: the device comprises a scanning probe, a rectangular scanning plane, a horn antenna to be tested, a vector network analyzer, a spread spectrum module, a control computer and an optical platform, wherein the scanning probe and the horn antenna to be tested are simultaneously oppositely arranged and coaxially erected on an antenna frame under a horizontal polarization condition, and the antenna frame is erected on the optical platform; the optical platform is used for ensuring the flatness of the measuring instrument and enabling the emitted electromagnetic wave signals to move to the designated direction;
the rectangular scanning plane is used for receiving electromagnetic wave signals transmitted by the horn antenna to be detected;
the control computer is used for controlling a scanning frame for erecting the scanning probe, so that the scanning probe performs bow-shaped movement along a first direction parallel to the surface of the optical platform and a second direction vertical to the first direction in a stepping mode with a preset value to scan the electromagnetic wave signals on each grid point on the rectangular scanning plane;
the spread spectrum module is used for spreading the electromagnetic wave signals scanned by the scanning probe;
the vector network analyzer is used for receiving the electromagnetic wave signals passing through the spread spectrum module, measuring the amplitude and phase values of the frequency points to be measured on the rectangular scanning plane, and recording the measured values and the corresponding position coordinates;
and the control computer converts the measured value and the corresponding position coordinate into a far-field directional pattern of the horn antenna to be detected.
In a specific embodiment, the predetermined value is 1/2 of the wavelength of the electromagnetic wave signal emitted by the horn antenna to be tested.
In one embodiment, the control computer runs an antenna pattern measurement control program to control a gantry on which the scanning probe is mounted.
In a specific embodiment, the control computer uses FFT transformation and a probe compensation algorithm to convert the measured values and corresponding position coordinates into a far-field pattern of the horn antenna to be measured.
A second embodiment of the present invention provides a method for calibrating a horn antenna pattern, including:
s10, the scanning probe and the horn antenna to be detected are simultaneously oppositely arranged and coaxially erected on an antenna frame under the horizontal polarization condition, and the antenna frame is erected on the optical platform;
s20, receiving an electromagnetic wave signal emitted by the horn antenna to be tested by the rectangular scanning plane;
s30, controlling a computer to control a scanning frame for erecting the scanning probe to enable the scanning probe to perform bow-shaped movement along a first direction parallel to the surface of the optical platform and a second direction vertical to the first direction by stepping with a preset value so as to scan the electromagnetic wave signal on each grid point on the rectangular scanning plane;
s40, the spread spectrum module spreads the spectrum of the electromagnetic wave signal scanned by the scanning probe;
s50, the vector network analyzer receives the electromagnetic wave signal passing through the spread spectrum module, measures the amplitude and phase values of the frequency point to be measured on the rectangular scanning plane, and records the measured values and the corresponding position coordinates;
and S60, converting the measured value and the corresponding position coordinate into a far-field directional pattern of the horn antenna to be measured by the control computer.
In a specific embodiment, the predetermined value is 1/2 of the wavelength of the electromagnetic wave signal emitted by the horn antenna to be tested. In one embodiment, the control computer runs an antenna pattern measurement control program to control a gantry on which the scanning probe is mounted.
In a specific embodiment, the control computer uses FFT transformation and a probe compensation algorithm to convert the measured values and corresponding position coordinates into a far-field pattern of the horn antenna to be measured.
A third embodiment of the invention provides a computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the method according to the second embodiment.
A fourth embodiment of the present invention provides a computing device comprising a processor, wherein the processor executes a program to implement the method according to the second embodiment.
The invention has the following beneficial effects:
the horn antenna directional pattern calibration system and method provided by the embodiment of the invention can quickly and accurately calibrate the antenna directional pattern and can meet the measurement guarantee requirements of the antenna.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic diagram of a feedhorn pattern calibration system according to an embodiment of the present invention.
Fig. 2 shows a flowchart of a horn antenna pattern calibration method according to an embodiment of the present invention.
Fig. 3 shows a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The principle of the scheme is that the degree of freedom of a receiving antenna frame in the X and Y directions is increased, so that a scanning probe erected on the receiving antenna frame realizes scanning in the X and Y directions, a horn antenna to be detected is erected on a transmitting antenna support, in a planar near-field rectangular area range which is 5 lambda away from the horn antenna to be detected and parallel to the mouth surface of the horn antenna to be detected, the scanning probe is used for scanning and acquiring amplitude phase information of a test point step by taking lambda/2 as scanning, and a far-field directional diagram is calculated through an algorithm.
Fig. 1 shows a schematic diagram of a feedhorn pattern calibration system according to an embodiment of the present invention, the system comprising: the device comprises a scanning probe, a rectangular scanning plane, a horn antenna to be tested, a vector network analyzer, a spread spectrum module, a control computer and an optical platform, wherein the scanning probe, the rectangular scanning plane, the horn antenna to be tested, the vector network analyzer, the spread spectrum module, the control computer and the optical platform are arranged as shown in figure 1, a cable connected with the horn antenna to be tested is a port 1, a cable connected with the scanning probe is a port 2, after the vector network analyzer is started and preheated, a frequency range is adjusted to a test frequency range, and; connecting instrument equipment, a horn antenna to be measured and a scanning probe, and setting the vector network analyzer to S21 parameter measurement;
the scanning probe and the horn antenna to be detected are simultaneously opposite to each other under the horizontal polarization condition and coaxially erected on an antenna frame, and the antenna frame is erected on the optical platform.
In a preferred example, the distance between the scanning probe and the horn antenna to be tested is the near field of the horn antenna to be tested, and the coupling influence between the probe and the horn antenna to be tested is controllable, for example, 5 λ and 4 λ are wavelengths for transmitting electromagnetic wave signals.
The optical platform is used for ensuring the flatness of the measuring instrument and enabling the emitted electromagnetic wave signals to move to the designated direction; optical platforms are widely used in optics because to ensure the accuracy of the optical path, all optical instruments are often placed on the optical platform, and leveling and shock-proof are provided to avoid affecting the light propagation path. Electromagnetic waves with high frequency, such as terahertz frequency, also have certain optical characteristics, so that the optical platform is applied to the electromagnetic waves.
The rectangular scanning plane is used for receiving electromagnetic wave signals transmitted by the horn antenna to be detected;
and the control computer is used for controlling a scanning frame for erecting the scanning probe, so that the scanning probe performs bow-shaped motion to scan the electromagnetic wave signals on each grid point on the rectangular scanning plane by stepping with a certain value along a first direction parallel to the surface of the optical platform and a second direction perpendicular to the first direction.
In one example, the control computer runs an antenna pattern measurement control program to control a gantry on which the scanning probe is mounted.
And the spread spectrum module is used for spreading the electromagnetic wave signals scanned by the scanning probe.
The spread spectrum module is used for spreading the electromagnetic wave signal, the maximum frequency of the electromagnetic wave signal emitted by a general signal source is about 50G, and if a signal with terahertz frequency is to be emitted or received, the spread spectrum module is required to spread the frequency.
And the vector network analyzer is used for receiving the electromagnetic wave signals passing through the spread spectrum module, measuring the amplitude and phase values of the frequency points to be measured on the rectangular scanning plane, and recording the measured values and the corresponding position coordinates.
And the control computer converts the measured value and the corresponding position coordinate (the information of the near-field scanning surface of the horn antenna to be detected) into a far-field directional diagram of the horn antenna to be detected.
In a preferred example, the control computer uses FFT transformation and a probe compensation algorithm to convert the measured values and corresponding position coordinates (information of the near-field scanning plane of the horn antenna to be measured) into a far-field pattern of the horn antenna to be measured.
The calibration is performed according to a horn antenna pattern calibration method as shown in fig. 2, and the method comprises the following steps:
s10, the scanning probe and the horn antenna to be detected are simultaneously oppositely arranged and coaxially erected on an antenna frame under the horizontal polarization condition, and the antenna frame is erected on the optical platform;
in one example, the distance between the scanning probe and the horn antenna to be tested is the near field of the horn antenna to be tested, and the coupling influence between the probe and the horn antenna to be tested is controllable, for example, 5 λ and 4 λ are wavelengths for transmitting electromagnetic wave signals.
S20, receiving an electromagnetic wave signal emitted by the horn antenna to be tested by the rectangular scanning plane;
s30, controlling the computer to control the scanning frame for erecting the scanning probe to make the scanning probe step by a certain value along a first direction parallel to the surface of the optical platform and a second direction vertical to the first direction, and making a bow-shaped motion to scan the electromagnetic wave signal on each grid point on the rectangular scanning plane;
in one example, the control computer runs an antenna pattern measurement control program to control a gantry on which the scanning probe is mounted.
In one example, a step of λ/2 is used to make a "bow" movement, and the step value is selected to be generally half of the wavelength or smaller than half of the wavelength, and the smaller the step, the longer the test time, and therefore generally half of the wavelength is selected, λ being the wavelength of the electromagnetic wave signal.
S40, the spread spectrum module spreads the spectrum of the electromagnetic wave signal scanned by the scanning probe;
s50, the vector network analyzer receives the electromagnetic wave signal passing through the spread spectrum module, measures the amplitude and phase values of the frequency point to be measured on the rectangular scanning plane, and records the measured values and the corresponding position coordinates;
and S60, converting the measured value and the corresponding position coordinate (information of the near-field scanning surface of the horn antenna to be tested) into a far-field directional pattern of the horn antenna to be tested by the control computer.
And the conversion from the information of the near-field scanning surface to a far-field directional diagram is realized by utilizing FFT conversion and a probe compensation algorithm.
The FFT transform and probe compensation algorithms are as follows:
1) probe scanning surface sampling
From a scanning plane of the horn antenna 5 λ to be measured, Deltax and Delay representing the sampling intervals, the choice of Deltax and Delay being directly linked to the space of the planar spectral function, assuming that in the k-space of the planar spectral function, kx∈[-kxm,kxm]，ky∈[-kym,kym]The relationship between the sample space and the spectrum space is as follows:
we select spectral sampling intervals in k-space as Δ kx，ΔkyA sampling position space x e-x of the (x, y) sampling planem,xm]，y∈[-ym,ym]Spatial relationship to the spectrum is as follows:
let the number of sampling points in the x-direction and the y-direction be M and N, respectively, the following geometrical relationship is given:
2xm＝MΔx，2ym＝NΔy，2kxm＝MΔkx，2kym＝NΔky
(3)
by selecting (x, y) and (k)x，ky) The sampling space is established, the sampling surface is required to be as large as possible and comprises all wave spectrums and space energy, but generally, the plane wave spectrum function and aperture field distribution of the directional antenna are limited, and the wave spectrum can be determined by measuring the field distribution of all sampling points on a scanning plane without measuring the field distribution of discrete points on the plane at intervals of deltax and deltay according to the Nyquist sampling theorem. Δ x and Δ y and the highest wavenumber spectrum kmThe following relationships exist:
2) finite bandwidth spectral function Fourier FFT
Suppose f (x) is a spectral width of 2 ωB(i.e. the
Not counting at | omega>ωB0) then from the sampling theorem:
i.e. the ratio of | omega | to omega | < omega >mWithin the range of
3) Two-dimensional Fourier transform
To perform the near-far field transformation, an important problem is that with respect to the above integral calculation, the integral F can be replaced by a double summation due to the limited spatial spectral width of F, and considering the limited truncation of the scan surface size, there is
The condition that the above formula is satisfied is as follows
Or
When V ≈ 0.
Order to
Then
Wherein (i, l) and
has a corresponding relationship of
Substituted into (8) to obtain
4) The compensation algorithm of the rectangular waveguide probe comprises the following steps:
the rectangular waveguide probe compensation algorithm adopts an E-plane electric field method, namely, a probe H-plane directional diagram function can be obtained by integrating a known probe E-plane directional diagram function, and the E-plane electric field method has the specific formula as follows:
in the above formula, the first and second carbon atoms are,
represents the integration vector from the origin to the area element dx 'dy' within the integration plane. TE10The electric and magnetic fields of the mode are respectively represented as:
here E0Is TE10The modulus amplitude value of (a). The electric field integral in equation (11) can be represented by E in equation (12)10And (4) showing. The H surface directional diagram function of the probe can be obtained by simplification (11):
in the E-plane electric field method, the E-plane directional pattern function of the probe is:
in the above formula, λ is the wavelength and θ is
And the included angle between the z axis in the coordinate system and a connecting line between one point in the space and the original point, wherein a and b are the lengths of the long edge and the wide edge of the mouth surface of the measuring probe respectively.
According to the plane wave expansion method and the lorentz reciprocity principle (the derivation process is omitted), it can be obtained that:
f1 and F2 are I (k) in 1x,ky) Can be modified into the same expression form
Substituting the formulas (10), (14) and (15) into the formula (16), and then substituting the formula (16) into the formula (17) can calculate the directional diagram of the horn antenna to be measured.
The horn antenna directional pattern calibration system and method provided by the embodiment of the invention can quickly and accurately calibrate the antenna directional pattern and can meet the measurement guarantee requirements of the antenna.
Embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for calibrating a horn antenna pattern according to embodiments of the present invention.
In practice, the computer-readable storage medium may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present embodiment, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
As shown in fig. 3, another embodiment of the present invention provides a schematic structural diagram of a computer device. The computer device 12 shown in FIG. 3 is only an example and should not impose any limitation on the scope of use or functionality of embodiments of the present invention.
As shown in FIG. 3, computer device 12 is in the form of a general purpose computing device. The components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
Computer device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 3, and commonly referred to as a "hard drive"). Although not shown in FIG. 3, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
Computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with computer device 12, and/or with any devices (e.g., network card, modem, etc.) that enable computer device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, computer device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via network adapter 20. As shown in FIG. 3, the network adapter 20 communicates with the other modules of the computer device 12 via the bus 18. It should be understood that although not shown in FIG. 3, other hardware and/or software modules may be used in conjunction with computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processor unit 16 executes programs stored in the system memory 28 to perform various functional applications and data processing, such as implementing a horn antenna pattern calibration system method according to an embodiment of the present invention.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A feedhorn pattern calibration system, comprising: the device comprises a scanning probe, a rectangular scanning plane, a horn antenna to be tested, a vector network analyzer, a spread spectrum module, a control computer and an optical platform, wherein the scanning probe and the horn antenna to be tested are simultaneously oppositely arranged and coaxially erected on an antenna frame under a horizontal polarization condition, and the antenna frame is erected on the optical platform; the optical platform is used for ensuring the flatness of the measuring instrument and enabling electromagnetic wave signals sent by the horn antenna to be transmitted in the direction vertical to the plane of the horn mouth;
the rectangular scanning plane is used for receiving electromagnetic wave signals transmitted by the horn antenna to be detected;
the control computer is used for controlling a scanning frame for erecting the scanning probe, so that the scanning probe performs bow-shaped movement along a first direction parallel to the surface of the optical platform and a second direction vertical to the first direction in a stepping mode with a preset value to scan the electromagnetic wave signals on each grid point on the rectangular scanning plane;
the spread spectrum module is used for spreading the electromagnetic wave signals scanned by the scanning probe;
the vector network analyzer is used for receiving the electromagnetic wave signals passing through the spread spectrum module, measuring the amplitude and phase values of the frequency points to be measured on the rectangular scanning plane, and recording the measured values and the corresponding position coordinates;
and the control computer converts the measured value and the corresponding position coordinate into a far-field directional pattern of the horn antenna to be detected.
2. The system of claim 1, wherein the predetermined value is 1/2 of the wavelength of the electromagnetic wave signal emitted from the horn antenna to be tested.
3. The system of claim 1, wherein the control computer runs an antenna pattern measurement control program to control a gantry on which the scanning probe is mounted.
4. The system of claim 1 wherein said control computer uses FFT transformation and probe compensation algorithms to effect conversion of said measured values and corresponding position coordinates to a feedhorn far field pattern under test.
5. A method of calibration using the system of claim 1, comprising:
s10, the scanning probe and the horn antenna to be detected are simultaneously oppositely arranged and coaxially erected on an antenna frame under the horizontal polarization condition, and the antenna frame is erected on the optical platform;
s20, receiving an electromagnetic wave signal emitted by the horn antenna to be tested by the rectangular scanning plane;
s30, controlling a computer to control a scanning frame for erecting the scanning probe to enable the scanning probe to perform bow-shaped movement along a first direction parallel to the surface of the optical platform and a second direction vertical to the first direction by stepping with a preset value so as to scan the electromagnetic wave signal on each grid point on the rectangular scanning plane;
s40, the spread spectrum module spreads the spectrum of the electromagnetic wave signal scanned by the scanning probe;
s50, the vector network analyzer receives the electromagnetic wave signal passing through the spread spectrum module, measures the amplitude and phase values of the frequency point to be measured on the rectangular scanning plane, and records the measured values and the corresponding position coordinates;
and S60, converting the measured value and the corresponding position coordinate into a far-field directional pattern of the horn antenna to be measured by the control computer.
6. The method according to claim 5, wherein the predetermined value is 1/2 of the wavelength of the electromagnetic wave signal emitted by the horn antenna to be tested.
7. The method of claim 5, wherein the control computer runs an antenna pattern measurement control program to control a gantry on which the scanning probe is mounted.
8. The method of claim 5, wherein said control computer uses an FFT transform and a probe compensation algorithm to effect the conversion of said measured values and corresponding position coordinates into a feedhorn far field pattern to be measured.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 5-8.
10. A computing device comprising a processor, wherein the processor implements the method of any one of claims 5-8 when executing a program.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113253000A (en) * | 2021-05-07 | 2021-08-13 | 北京无线电计量测试研究所 | Antenna field calibration system and method |
| CN113533863A (en) * | 2021-06-23 | 2021-10-22 | 北京邮电大学 | Amplitude scanning system |
| CN113671271A (en) * | 2021-07-23 | 2021-11-19 | 西安空间无线电技术研究所 | Antenna test data acquisition method for three-dimensional space automatic trajectory control |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590640A (en) * | 2012-02-21 | 2012-07-18 | 北京航空航天大学 | Millimeter-wave\submillimeter-wave near-field amplitude and phase measuring method |
| CN103616569A (en) * | 2013-11-20 | 2014-03-05 | 中国电子科技集团公司第四十一研究所 | Method for correcting near-field test phases of millimeter wave plane |
| CN103926474A (en) * | 2014-03-18 | 2014-07-16 | 中国电子科技集团公司第十研究所 | Phased array antenna unit characteristic near-field measurement method |
| CN104391183A (en) * | 2014-10-11 | 2015-03-04 | 中国船舶重工集团公司第七二四研究所 | Near-field-measurement-based rapid calculation method of antenna far-field region characteristic |
| CN105572487A (en) * | 2015-12-31 | 2016-05-11 | 北京理工大学 | Array antenna near field amplitude phase measuring method and amplitude phase measurer |
| CN106990300A (en) * | 2017-06-05 | 2017-07-28 | 中国电子科技集团公司第四十研究所 | Antenna radiation pattern and device and method of the scattering as test are realized in a kind of synchronization |
| CN107632210A (en) * | 2017-08-22 | 2018-01-26 | 天津大学 | A kind of Terahertz antenna plane near-field measurement system |
| CN207717615U (en) * | 2017-12-08 | 2018-08-10 | 山东省科学院自动化研究所 | A kind of location triggered formula THz continuous wave scanning imaging system |
| CN109374990A (en) * | 2018-12-03 | 2019-02-22 | 北京无线电计量测试研究所 | A kind of antenna phase center calibration method |
| CN110412520A (en) * | 2018-04-27 | 2019-11-05 | 安立股份有限公司 | Calibration system and calibration method |
-
2020
- 2020-09-23 CN CN202011005003.6A patent/CN112327061A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590640A (en) * | 2012-02-21 | 2012-07-18 | 北京航空航天大学 | Millimeter-wave\submillimeter-wave near-field amplitude and phase measuring method |
| CN103616569A (en) * | 2013-11-20 | 2014-03-05 | 中国电子科技集团公司第四十一研究所 | Method for correcting near-field test phases of millimeter wave plane |
| CN103926474A (en) * | 2014-03-18 | 2014-07-16 | 中国电子科技集团公司第十研究所 | Phased array antenna unit characteristic near-field measurement method |
| CN104391183A (en) * | 2014-10-11 | 2015-03-04 | 中国船舶重工集团公司第七二四研究所 | Near-field-measurement-based rapid calculation method of antenna far-field region characteristic |
| CN105572487A (en) * | 2015-12-31 | 2016-05-11 | 北京理工大学 | Array antenna near field amplitude phase measuring method and amplitude phase measurer |
| CN106990300A (en) * | 2017-06-05 | 2017-07-28 | 中国电子科技集团公司第四十研究所 | Antenna radiation pattern and device and method of the scattering as test are realized in a kind of synchronization |
| CN107632210A (en) * | 2017-08-22 | 2018-01-26 | 天津大学 | A kind of Terahertz antenna plane near-field measurement system |
| CN207717615U (en) * | 2017-12-08 | 2018-08-10 | 山东省科学院自动化研究所 | A kind of location triggered formula THz continuous wave scanning imaging system |
| CN110412520A (en) * | 2018-04-27 | 2019-11-05 | 安立股份有限公司 | Calibration system and calibration method |
| CN109374990A (en) * | 2018-12-03 | 2019-02-22 | 北京无线电计量测试研究所 | A kind of antenna phase center calibration method |
Non-Patent Citations (3)
| Title |
|---|
| 刘超: "快速傅立叶变换在天线时域近场测量技术中的应用", 《2001全国微波毫米波会议论文集》 * |
| 潘宇虎: "平面近场测量和诊断技术的研究", 《中国优秀博硕士学位论文全文数据库（硕士） 信息科技辑》 * |
| 陈玉山 等: "一种平面近场测试宽带探头补偿方法", 《舰船电子对抗》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113253000A (en) * | 2021-05-07 | 2021-08-13 | 北京无线电计量测试研究所 | Antenna field calibration system and method |
| CN113533863A (en) * | 2021-06-23 | 2021-10-22 | 北京邮电大学 | Amplitude scanning system |
| CN113671271A (en) * | 2021-07-23 | 2021-11-19 | 西安空间无线电技术研究所 | Antenna test data acquisition method for three-dimensional space automatic trajectory control |
| CN113671271B (en) * | 2021-07-23 | 2023-11-10 | 西安空间无线电技术研究所 | Antenna test data acquisition method for three-dimensional space automatic track control |
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