CN113092883B - System and method for testing non-principal plane aiming line error of antenna housing - Google Patents
System and method for testing non-principal plane aiming line error of antenna housing Download PDFInfo
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- CN113092883B CN113092883B CN202110390716.7A CN202110390716A CN113092883B CN 113092883 B CN113092883 B CN 113092883B CN 202110390716 A CN202110390716 A CN 202110390716A CN 113092883 B CN113092883 B CN 113092883B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
Abstract
The invention provides a system and a method for testing the non-principal plane aiming line error of an antenna housing, which belong to the technical field of antenna housing performance testing, and comprise a testing rotary table and a testing scanning frame, wherein the testing rotary table is provided with the antenna housing to be tested, and the testing scanning frame is provided with a transmitting antenna; further comprising: a programmable multi-axis motion controller; a programmable multi-axis motion controller controls the motion of each motion axis of the test turntable and the test scanning frame; wherein the programmable multi-axis motion controller is configured to: controlling the motion of each motion axis of the test scanning frame to enable the transmitting antenna to move along a linear track which is neither horizontal nor vertical in a linear interpolation mode; after the electric axis alignment is finished, the zero depth is searched, and the aiming line error is calculated according to the measured zero depth position. The antenna housing can be tested in any direction, and the performance index of the antenna housing can be known more comprehensively; the testing precision is high, and the method is compatible with the advantages of the error testing of the aiming line in the azimuth direction and the pitching direction.
Description
Technical Field
The invention relates to the technical field of antenna housing performance testing, in particular to an antenna housing non-main plane aiming line error testing system and method capable of realizing aiming line error testing in any direction.
Background
The antenna cover is an important component of a missile antenna system, and is a common carrier of an antenna in an aircraft. The radome protects the seeker antenna from external environmental adverse factors. However, the antenna housing wall affects the radiation characteristics of the antenna, causing electromagnetic wave transmission loss and antenna beam pointing offset, which reduces the operating distance and guidance accuracy of the guidance system. Therefore, the electrical performance of the radome needs to be tested to meet the radome use requirements.
The electrical performance test of the antenna housing comprises a power transmission coefficient test and a line-of-sight error test. For aiming line error testing, the traditional technology only tests the errors of the aiming line of the antenna housing in the azimuth direction and the pitching direction, and the testing precision can not be ensured because the testing can not be carried out on any direction of the antenna housing.
Disclosure of Invention
The invention aims to provide a system and a method for testing the boresight line error of a non-main plane of an antenna housing based on a programmable multi-axis motion controller, which improve the precision of linear motion and realize the error test of the boresight line of the non-main plane, so as to solve at least one technical problem in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a system for testing the non-principal plane aiming line error of an antenna housing, which comprises a testing rotary table and a testing scanning frame, wherein the testing rotary table is provided with the antenna housing to be tested, and the testing scanning frame is provided with a transmitting antenna; further comprising:
a programmable multi-axis motion controller;
the programmable multi-axis motion controller controls the motion of each motion axis of the test turntable and the test scanning frame; wherein the content of the first and second substances,
the programmable multi-axis motion controller is configured to: controlling the motion of each motion axis of the test scanning frame to enable the transmitting antenna to move along a linear track, wherein the linear track is intersected with a horizontal axis and a vertical axis of the test scanning frame at the same time; after the electric axis alignment is finished, the zero depth is searched, and the aiming line error is calculated according to the measured zero depth position.
Preferably, the test rotary table comprises a rotary table, a connecting frame is connected to the rotary table, a stand column is fixed to one end of the connecting frame, a first position adjusting mechanism is fixed to the stand column, a second position adjusting mechanism is arranged on the first position adjusting mechanism, a third position adjusting mechanism is arranged on the second position adjusting mechanism, and a test tool is arranged on the third position adjusting mechanism.
Preferably, the first position adjusting mechanism comprises a first servo linear driving sliding table, a first mounting block is fixed on a sliding block of the first servo linear driving sliding table, and the second position adjusting mechanism is fixed on the first mounting block.
Preferably, the second position adjusting mechanism comprises a second servo linear driving sliding table, and the second servo linear driving sliding table is fixed on the first mounting block; and a second mounting block is fixed on the sliding block of the second servo linear driving sliding table, and the third position adjusting mechanism is fixed on the second mounting block.
Preferably, the third position adjusting mechanism comprises a third servo linear driving sliding table, and the third servo linear driving sliding table is fixed on the second mounting block; and the test tool is arranged on the sliding block of the third servo linear driving sliding table.
Preferably, the test tool comprises a driving motor and an antenna housing butt flange, and the antenna housing butt flange is mounted on the first mounting block; the driving motor is vertically fixed on a sliding block of the third servo linear driving sliding table; the driving shaft of the driving motor is connected with a rotating rod, the two ends of the rotating rod are both rotatably connected with a pull rod, and the other end of the pull rod is rotatably connected with an antenna positioner.
In a second aspect, the invention provides a method for testing a non-principal plane line of sight of an antenna housing by using the system, wherein a test turntable returns to zero, a test scanning frame is controlled to move a transmitting antenna to a calibration position, namely a starting position, and geometric alignment of the transmitting antenna and the receiving antenna is completed;
setting parameters of a programmable multi-axis motion controller, determining a motion track, and controlling the motion of each motion axis of the test scanning frame by adopting a linear interpolation motion mode to enable a transmitting antenna to move along a linear track which is neither horizontal nor vertical;
and after the electric axis alignment is finished, searching for zero depth, and calculating the aiming line error according to the measured zero depth position.
Preferably, the parameter setting is performed on the programmable multi-axis motion controller, and comprises the following steps:
and determining the positive included angle between the linear track and the X axis and the motion speed of the transmitting antenna, and calculating a linear equation by combining the coordinates of the initial motion position.
Preferably, the coordinates of the two target location points on the linear trajectory are determined according to a linear equation, and the programmable multi-axis motion controller executes a motion program to move the transmitting antenna between the two target location points.
Preferably, the transmitting antenna is controlled to move to a position corresponding to the minimum value of the central frequency difference channel amplitude, and after the alignment of the electric axis is completed, the zero depth is searched and recorded, namely, the transmitting antenna moves on the determined track, and the zero depth position coordinates of each frequency point are searched and recorded, and the aiming line error is calculated according to the zero depth position coordinates of each frequency point.
The invention has the beneficial effects that: the test of the antenna housing in any direction can be realized, and the performance index of the antenna housing can be known more comprehensively; the testing precision is high, and the method is compatible with the advantages of the error testing of the aiming line in the azimuth direction and the pitching direction.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are 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 is a control schematic block diagram of a PMAC-based programmable motion controller according to an embodiment of the present invention.
Fig. 2 is a perspective structural view of a test turntable according to an embodiment of the present invention.
Fig. 3 is a top view structural diagram of a test turntable according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a track curve of a linear interpolation motion and a non-linear interpolation motion according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for testing an error of a non-principal plane aiming line of an antenna housing according to an embodiment of the present invention.
Wherein: 1-a rotating platform; 2-a connecting frame; 3-upright post; 4-a first servo linear driving sliding table; 5-a first mounting block; 6-a second servo linear driving sliding table; 7-a second mounting block; 8-a third servo linear driving sliding table; 9-radome docking flange; 10-a radome; 11-a drive motor; 12-rotating rods; 13-a pull rod; 14-antenna positioner.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by way of the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present specification, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present specification, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present technology.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present technology can be understood by those of ordinary skill in the art as appropriate.
For the purpose of facilitating an understanding of the present invention, the present invention will be further explained by way of specific embodiments with reference to the accompanying drawings, which are not intended to limit the present invention.
It will be appreciated by those skilled in the art that the drawings are merely schematic representations of embodiments and that the elements in the drawings are not necessarily required to practice the present invention.
Examples
The embodiment of the invention provides a system for testing the non-principal plane aiming line error of an antenna housing, which comprises a testing rotary table and a testing scanning frame, wherein the testing rotary table is provided with the antenna housing to be tested, and the testing scanning frame is provided with a transmitting antenna; further comprising:
a programmable multi-axis motion controller;
a programmable multi-axis motion controller controls the motion of each motion axis of the test turntable and the test scanning frame; wherein the content of the first and second substances,
the programmable multi-axis motion controller is configured to: controlling the motion of each motion axis of the test scanning frame to enable the transmitting antenna to move along a linear track which is neither horizontal nor vertical; after the electric axis alignment is finished, the zero depth is searched, and the aiming line error is calculated according to the measured zero depth position.
In this embodiment, the programmable multi-axis motion controller is connected with an ac servo driver, the ac servo driver is connected with an ac servo motor, and the ac servo motor is connected with a motion axis.
An encoder is connected between the alternating current servo driver and the alternating current servo motor, and the alternating current servo motor feeds back a speed loop to the alternating current servo driver through the encoder. And the X axis and the Y axis of the test scanning frame are both driven by screws.
In this embodiment, the method for testing the non-main-plane line of sight of the radome by using the system described above includes:
the test turntable returns to zero, the test scanning frame is controlled to enable the transmitting antenna to move to a calibration position, namely a starting position, and geometric alignment of the transmitting antenna and the receiving antenna is completed;
setting parameters of a programmable multi-axis motion controller, determining a motion track, and controlling the motion of each motion axis of the test scanning frame by adopting a linear interpolation motion mode to enable a transmitting antenna to move along a linear track which is neither horizontal nor vertical;
and after the electric axis alignment is finished, searching zero depth, and calculating aiming line errors according to the measured zero depth position.
Wherein, carry out parameter setting to the multiaxis motion controller that can programme, include:
and determining the positive included angle between the linear track and the X axis and the motion speed of the transmitting antenna, and calculating a linear equation by combining the coordinates of the initial motion position.
Specifically, in this embodiment, the coordinates of two target position points on the linear trajectory are determined according to a linear equation, and the programmable multi-axis motion controller executes a motion program to move the transmitting antenna between the two target position points. And controlling the transmitting antenna to move to a position corresponding to the minimum value of the central frequency difference channel amplitude, after the alignment of the electric axis is completed, starting to find the zero depth, namely, the transmitting antenna moves on a determined track, searching and recording the zero depth position coordinates of each frequency point, and calculating the aiming line error according to the zero depth position coordinates of each frequency point.
As shown in fig. 1, a computer sends a control command to a PMAC, the PMAC outputs a control pulse to an alternating current servo driver, the driver drives a motor to rotate, an encoder at the tail of the motor feeds back the control pulse to the driver to form a speed ring, and the motor drives the antenna housing testing turntable and each shaft of a scanning frame to move through a transmission mechanism.
As shown in fig. 2 and 3, the test turntable can drive the radome to realize the movement positions at different angles, and the boresight errors of the radome at different angles can be tested.
In this embodiment, the test turret includes: the revolving stage 1 for the position angle of the whole stage body of adjustment, revolving stage 1 connects cover body position adjustment mechanism through stand 3, and cover body position adjustment mechanism drives the adjustment that the antenna house realized the position. The cover position adjusting mechanism comprises a first position adjusting mechanism, a second position adjusting mechanism and a third position adjusting mechanism. The first position adjusting mechanism can drive the second position adjusting mechanism to move back and forth, the second position adjusting mechanism can drive the third position adjusting mechanism to move left and right, and the third position adjusting mechanism can drive the testing tool to move back and forth.
Specifically, in the test turntable in this embodiment, the turntable 1 is located at the bottommost portion, the turntable 1 is connected with the connecting frame 2, the stand 3 is fixed to one end of the connecting frame 2, the first position adjusting mechanism is fixed to the stand 3, the second position adjusting mechanism is arranged on the first position adjusting mechanism, the third position adjusting mechanism is arranged on the second position adjusting mechanism, and the test tool is arranged on the third position adjusting mechanism.
The first position adjusting mechanism comprises a first servo linear driving sliding table 4, a first mounting block 5 is fixed on a sliding block of the first servo linear driving sliding table 4, and the second position adjusting mechanism is fixed on the first mounting block 5.
The second position adjusting mechanism comprises a second servo linear driving sliding table 6, and the second servo linear driving sliding table 6 is fixed on the first mounting block 5; and a second mounting block 7 is fixed on the sliding block of the second servo linear driving sliding table 6, and the third position adjusting mechanism is fixed on the second mounting block 7.
The third position adjusting mechanism comprises a third servo linear driving sliding table 8, and the third servo linear driving sliding table 8 is fixed on the second mounting block 7; and the test tool is arranged on the sliding block of the third servo linear driving sliding table 8.
The test tool comprises a driving motor 11, and the driving motor 11 is vertically fixed on a sliding block of the third servo linear driving sliding table 8; the driving shaft of the driving motor 11 is connected with a rotating rod 12, two ends of the rotating rod 12 are both rotatably connected with a pull rod 13, and the other end of the pull rod 13 is rotatably connected with an antenna positioner 14.
The antenna housing butt flange 9 is installed at the front end of the first installation block 5, the antenna housing 10 is installed on the butt flange 9, the antenna positioner 14 is covered, the rotating shaft 12 is driven to rotate by the rotation of the driving motor through the driving shaft, the adjustment of the azimuth angle of the antenna positioner 14 is realized through the pull rods 13 at the two ends of the rotating shaft 12, and therefore the adjustment of the relative azimuth angle of the antenna and the antenna housing 10 on the antenna positioner 14 is realized.
When the testing turntable drives the radome to move in place, the scanning frame starts to move to find the depth of change, the scanning frame is the existing equipment in the field, and the structure and the working principle of the scanning frame are not described in detail herein.
The scanning frame is provided with a horizontal X axis, a vertical Y axis and a polarized P axis, the X axis and the Y axis are both driven by screws, the transmitting antenna is arranged on the polarized axis, and the X axis and the Y axis are linked to form the motion of the antenna. The testing of non-principal planar boresight errors requires that the transmitting antenna make a linear motion that is neither horizontal nor vertical.
As shown in fig. 3, assuming that the starting position is a, the linear trajectory of the antenna motion after the slope is given is determined, and the difference between the linear interpolation motion mode and the non-linear interpolation motion mode is illustrated in the figure, which obviously shows that the linear interpolation motion trajectory is more accurate.
The testing process of the non-principal plane aiming line error of the antenna housing is shown in fig. 4, firstly, the turntable returns to zero, the scanning frame is controlled to enable the transmitting antenna to move to a calibrated position, namely a starting position A, and the geometric alignment of the transmitting antenna and the receiving antenna is completed; the linear track is determined by parameter setting, the zero depth is searched after the electric axis alignment is completed, and the aiming line error is calculated according to the measured zero depth position. And setting parameters including an included angle theta between a straight line track and the positive direction of the X axis and the motion speed v, determining the slope of the straight line by theta, knowing the coordinate of the initial motion position A, calculating a straight line equation, determining the coordinates of two points B and C far away from each other according to the straight line equation, and executing a motion program by the scanning frame controller to move between the two points B and C in an absolute motion mode. After the movement track is determined, firstly, the transmitting antenna is controlled to move to a position corresponding to the minimum value of the central frequency difference channel amplitude to finish the electric axis alignment, then the zero depth is searched, namely, the transmitting antenna moves on the determined track, and simultaneously, the zero depth position coordinates (x, y) of each frequency point are searched and recorded, and the aiming line error is calculated according to a formula.
In summary, according to the system and the method for testing the boresight error of the non-principal plane of the radome in the embodiments of the present invention, based on the PMAC ac servo control system, the computer sends a control instruction to the PMAC, the PMAC outputs a control pulse to the ac servo driver, the driver drives the motor to rotate, the encoder at the tail of the motor feeds back the control pulse to the driver to form a speed loop, and the motor drives each shaft to move through the transmission mechanism. The testing rotary table can test aiming line errors of the antenna housing at different angles, when the rotary table is in place, the scanning frame starts to move to find the zero depth, the scanning frame is provided with a horizontal X axis, a vertical Y axis and a polarization P axis, the X axis and the Y axis are driven by screws, the transmitting antenna is installed on the polarization axis, and the X axis and the Y axis are linked to form the movement of the antenna. The non-principal plane boresight error test requires that the transmitting antenna make a linear motion that is neither horizontal nor vertical. Firstly, the turntable returns to zero, the scanning frame is controlled to enable the transmitting antenna to move to a calibrated position, namely a starting position A, and the geometric alignment of the transmitting antenna and the receiving antenna is completed; the linear track is determined by parameter setting, the zero depth is searched after the electric axis alignment is completed, and the aiming line error is calculated according to the measured zero depth position. The test of the antenna housing in any direction can be realized, and the performance index of the antenna housing can be known more comprehensively; the testing precision is high, and the method is compatible with the advantages of the error testing of the aiming line in the azimuth direction and the pitching direction.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to the specific embodiments shown in the drawings, it is not intended to limit the scope of the present disclosure, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive faculty based on the technical solutions disclosed in the present disclosure.
Claims (8)
1. A system for testing the non-principal plane aiming line error of an antenna housing comprises a testing rotary table and a testing scanning frame, wherein the testing rotary table is provided with the antenna housing to be tested, and the testing scanning frame is provided with a transmitting antenna; it is characterized by also comprising:
a programmable multi-axis motion controller;
the programmable multi-axis motion controller controls the motion of each motion axis of the test turntable and the test scanning frame; wherein the content of the first and second substances,
the programmable multi-axis motion controller is connected with an alternating current servo driver, the alternating current servo driver is connected with an alternating current servo motor, and the alternating current servo motor is connected with a motion shaft; an encoder is connected between the alternating current servo driver and the alternating current servo motor, and the alternating current servo motor feeds a speed loop back to the alternating current servo driver through the encoder; the X axis and the Y axis of the test scanning frame are both driven by screws;
the test turntable comprises a turntable (1), a connecting frame (2) is connected to the turntable (1), an upright post (3) is fixed at one end of the connecting frame (2), a first position adjusting mechanism is fixed on the upright post (3), a second position adjusting mechanism is arranged on the first position adjusting mechanism, a third position adjusting mechanism is arranged on the second position adjusting mechanism, and a test tool is arranged on the third position adjusting mechanism;
the test tool comprises a driving motor (11) and an antenna housing butt flange (9), wherein the antenna housing butt flange (9) is installed on the first installation block (5); the driving motor (11) is vertically fixed on a sliding block of the third servo linear driving sliding table (8); a driving shaft of the driving motor (11) is connected with a rotating rod (12), two ends of the rotating rod (12) are respectively and rotatably connected with a pull rod (13), and the other end of each pull rod (13) is rotatably connected with an antenna positioner (14);
the programmable multi-axis motion controller is configured to: controlling the motion of each motion axis of the test scanning frame to enable the transmitting antenna to move along a linear track in a linear interpolation mode, wherein the linear track is intersected with a horizontal axis and a vertical axis of the test scanning frame at the same time; after the electric axis alignment is finished, the zero depth is searched, and the aiming line error is calculated according to the measured zero depth position.
2. The system for testing the boresight error of the non-main plane of the radome of claim 1, wherein the first position adjusting mechanism comprises a first servo linear driving sliding table (4), a first mounting block (5) is fixed on a sliding block of the first servo linear driving sliding table (4), and the second position adjusting mechanism is fixed on the first mounting block (5).
3. The radome non-main-plane boresight error test system according to claim 2, wherein the second position adjustment mechanism comprises a second servo linear drive slide (6), the second servo linear drive slide (6) being fixed on the first mounting block (5); and a second mounting block (7) is fixed on a sliding block of the second servo linear driving sliding table (6), and the third position adjusting mechanism is fixed on the second mounting block (7).
4. The radome non-main-plane boresight error test system according to claim 3, wherein the third position adjustment mechanism comprises a third servo linear drive sliding table (8), and the third servo linear drive sliding table (8) is fixed on the second mounting block (7); and the test tool is arranged on the sliding block of the third servo linear driving sliding table (8).
5. A radome non-principal plane line of sight testing method using the system of any one of claims 1-4, comprising:
the test turntable returns to zero, the test scanning frame is controlled to enable the transmitting antenna to move to a calibration position, namely a starting position, and geometric alignment of the transmitting antenna and the receiving antenna is completed;
setting parameters of a programmable multi-axis motion controller, determining a motion track, and controlling the motion of each motion axis of the test scanning frame by adopting a linear interpolation motion mode to enable a transmitting antenna to move along a linear track which is neither horizontal nor vertical;
and after the electric axis alignment is finished, searching zero depth, and calculating aiming line errors according to the measured zero depth position.
6. The radome non-principal plane boresight test method according to claim 5, wherein the parameter setting of the programmable multi-axis motion controller comprises:
and determining the positive included angle between the linear track and the X axis and the motion speed of the transmitting antenna, and calculating a linear equation by combining the coordinates of the initial motion position.
7. The radome non-principal plane crosshair testing method according to claim 6, wherein coordinates of two target position points on a linear trajectory are determined according to a linear equation, and the programmable multi-axis motion controller executes a motion program to cause the transmitting antenna to move between the two target position points in a linear interpolation mode.
8. The antenna cover non-main plane sight line testing method according to claim 7, characterized in that the transmitting antenna is controlled to move to a position corresponding to the minimum value of the channel amplitude of the central frequency difference, and after the electric axis alignment is completed, the zero depth is searched, that is, the transmitting antenna moves on a determined track, and the zero depth position coordinates of each frequency point are searched and recorded, and the sight line error is calculated according to the zero depth position coordinates of each frequency point.
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| CN107290600A (en) * | 2017-07-05 | 2017-10-24 | 中山香山微波科技有限公司 | High-accuracy antenna chamber internal field test system and its test platform |
| CN108196133A (en) * | 2017-12-26 | 2018-06-22 | 北京无线电计量测试研究所 | A kind of adjustment system and method for three-axle table and Spherical surface scanning device spacial alignment |
| CN109596924A (en) * | 2018-12-28 | 2019-04-09 | 清华大学 | Wireless charging system for electric automobile coupling coil experiment porch |
| CN110045157A (en) * | 2019-04-10 | 2019-07-23 | 杭州永谐科技有限公司 | A kind of five axis positioning turntable for testing multi-antenna |
| CN110488099A (en) * | 2019-06-28 | 2019-11-22 | 成都华兴大地科技有限公司 | A kind of test macro and its application method for millimeter wave antenna near field calibration and width scanning phase |
| CN110554257A (en) * | 2019-07-22 | 2019-12-10 | 中国航空工业集团公司济南特种结构研究所 | Antenna housing aiming error zero searching system and zero searching method |
| CN110441620A (en) * | 2019-08-14 | 2019-11-12 | 中电科仪器仪表有限公司 | A kind of multifrequency point dynamic of antenna house aiming-line error test searches zero method and system |
| CN111044794A (en) * | 2019-12-18 | 2020-04-21 | 北京无线电计量测试研究所 | Universal multi-axis radome testing turntable and adjusting method |
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