CN112490669A - Attitude adjusting method and device for phased array antenna in near field test - Google Patents
Attitude adjusting method and device for phased array antenna in near field test Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
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Abstract
The invention relates to a posture adjusting method and device for phased array antenna near field testing, and belongs to the technical field of antenna near field testing. The posture adjusting method comprises the following steps: controlling the measuring probe to walk for a circle along a rectangular route in a vertical plane, selecting a plurality of points of the measuring probe on the rectangular route and a plurality of corresponding points on the phased array antenna, and obtaining the distance between the two opposite points; calculating the azimuth angle and the pitching angle of the phased array antenna according to the obtained distance between the two opposite points and the length and the width of the rectangular route; adjusting the azimuth angle adjustment of the phased array antenna according to the obtained azimuth angle; and adjusting the pitching angle of the phased array antenna according to the obtained pitching angle. The invention also provides an attitude adjusting device for the phased array antenna during near field test. The attitude adjusting method can realize the adjustment of the position and the attitude of the large phased array antenna in a darkroom during the near field test, and improve the efficiency and the progress of the near field test of the phased array antenna.
Description
Technical Field
The invention belongs to the technical field of antenna near field test, and particularly relates to a posture adjusting method and device during phased array antenna near field test.
Background
After the phased array antenna is assembled and integrated, the phased array antenna needs to enter a dark room for near field testing. During near-field testing, the relative position of the antenna and the measuring head needs to be adjusted, and the distance difference between the measuring head and the antenna at each position is not larger than a certain value, such as 1 mm. Therefore, the position and the attitude of the antenna need to be accurately adjusted in a dark room. When the relative position of the antenna and the measuring head is adjusted in a darkroom, the position adjustment of a large-size antenna and the posture adjustment of the direction, the pitch and the level of the antenna are required to be carried out in a narrow space, and the requirement on the relative position precision of the antenna and the measuring head is high. Therefore, the difficulty of adjustment is high.
The existing posture adjustment method mainly adopts the mode that the phased array antenna is fixed through an assembly tool, then the assembly tool is moved manually, the length of a supporting leg is adjusted and the like, the measurement is carried out while the adjustment is carried out, the precision is difficult to guarantee, and the efficiency is low.
Disclosure of Invention
The present invention provides a method and an apparatus for adjusting the attitude of a phased array antenna during near field testing.
The present invention provides a method for adjusting an attitude of a phased array antenna during a near field test, in order to solve the above technical problems.
The technical scheme for solving the technical problems is as follows: a posture adjusting method in the near field test of the phased array antenna comprises the following steps:
controlling the measuring probe to walk for a circle along a rectangular route in a vertical plane relative to the phased array antenna, and selecting a plurality of points of the measuring probe on the rectangular route and a plurality of corresponding points on the phased array antenna to obtain the distance between the two relative points;
calculating the azimuth angle and the pitching angle of the phased array antenna according to the obtained distance between the two opposite points and the length and the width of the rectangular route;
adjusting the azimuth angle adjustment of the phased array antenna according to the obtained azimuth angle;
adjusting the pitching angle adjustment of the phased array antenna according to the obtained pitching angle;
and finishing the adjustment of the attitude of the phased array antenna.
The posture adjusting method has the beneficial effects that: by the attitude adjustment method, the distance between the phased array antenna and the measuring probe is established into a model, the angle to be adjusted can be obtained by calculating the angle of the model, actual adjustment is carried out, the adjustment of the position and the attitude of the phased array antenna in a darkroom during the near field test can be realized, and the accurate adjustment and detection of the attitude of the antenna can be realized by matching with a laser ranging sensor in the darkroom, so that the efficiency and the progress of the near field test of the phased array antenna are improved, the labor intensity of workers is reduced, and the test safety is improved.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the number of the measuring probes in the rectangular route is four, the number of the points is A1, B1, C1 and D1, the width of the rectangular route is W, the height of the rectangular route is H, the number of the corresponding points on the phased array antenna is four, the number of the corresponding points is A, B, C and D, and the distances from the four points on the rectangular route to the corresponding four points on the phased array antenna are L1, L2, L3 and L4.
The beneficial effect of adopting the further scheme is that: the azimuth angle and the pitching angle of the phased array antenna can be effectively calculated through four points, and the adjusting efficiency is high.
Further, the calculating the azimuth angle and the pitch angle of the phased array antenna according to the obtained distance between the two opposite points and the length and the width of the rectangular route comprises the following steps:
establishing a three-dimensional rectangular coordinate system (x, y, z) by taking the ground as a horizontal plane and taking a point P projected to the ground by a point D1 as a coordinate origin
The distance between D1 and the point P is L5; determining the coordinates of four points of the rectangular route as follows:
A1：(0，0，L5+W)
B1：(0，H，L5+W)
C1：(0，H，L5)
D1：(0，0，L5)；
determining coordinates of four corresponding points on the phased array antenna as:
A：(L1，0，L5+W)
B：(L2，H，L5+W)
C：(L3，H，L5)
D：(L4，0，L5)
and connecting points A1, B1, C1, D1, A, B, C and D to form a three-dimensional model, and calculating the azimuth angle and the pitch angle of the phased-array antenna according to the three-dimensional model.
The beneficial effect of adopting the further scheme is that: a coordinate system is established for the model, so that the pitching angle and the direction angle can be calculated conveniently.
Further, the calculation of the azimuth angle and the pitch angle of the phased array antenna according to the three-dimensional model is calculated according to a trigonometric function, and the included angle between AD and A1D1
BC and B1C1
And the included angle beta between the CD and the C1D1, and the pitch angle is the included angle between the AD and the A1D1
And the angle between BC and B1C1
Is the angle β between CD and C1D 1.
The beneficial effect of adopting the further scheme is that: the azimuth angle and the pitching angle of the phased array antenna can be visually embodied through the translation lines, then calculation is carried out, the method is very convenient, and the azimuth angle and the pitching angle of the phased array antenna can be visually obtained.
Further, the included angle between AD and A1D1
The following formula I is adopted for calculation:
where H is the length of the rectangular path and W is the width of the rectangular path.
The beneficial effect of adopting the further scheme is that: is favorable for direct calculation and is very convenient.
Further, the included angle between BC and B1C1
The following formula two is adopted for calculation:
where H is the length of the rectangular path and W is the width of the rectangular path.
The beneficial effect of adopting the further scheme is that: is favorable for direct calculation and is very convenient.
Further, the included angle β between the CD and C1D1 is calculated by the following formula three:
where H is the length of the rectangular path and W is the width of the rectangular path.
The beneficial effect of adopting the further scheme is that: is favorable for direct calculation and is very convenient.
Further, after the pitching angle adjustment of the phased array antenna is completed according to the obtained pitching angle, whether the phased array antenna is qualified or not is detected, if so, the phased array antenna is completed, otherwise, the phased array antenna is readjusted from the beginning.
The beneficial effect of adopting the further scheme is that: the adjustment result can be judged to ensure the adjustment effect, and when the adjustment is unqualified, the adjustment can be carried out again, so that the adjustment effect is better.
Further, the detecting whether the phased array antenna adjustment is qualified comprises the following steps:
after the azimuth angle and the pitch angle of the phased array antenna are adjusted, L1, L2, L3 and L4 are measured again, if L1 is equal to L2 and equal to L3 and equal to L4, the phased array antenna is judged to be qualified, and otherwise, the phased array antenna is not qualified.
The beneficial effect of adopting the further scheme is that: the judgment is very intuitive and efficient, and the rapid adjustment of the attitude of the phased array antenna is facilitated.
Secondly, the present invention provides an attitude adjusting apparatus for a phased array antenna during near field test to solve the above technical problems.
The technical scheme for solving the technical problems is as follows: an attitude adjusting device for a phased array antenna during near field test, comprising:
a support platform;
the horizontal adjusting module is connected to the supporting platform;
the direction adjusting module is connected to the output end of the horizontal adjusting module and is used for adjusting the azimuth angle of the phased array antenna;
the pitching adjusting module is used for placing the phased array antenna, the pitching adjusting module is connected to the output end of the direction adjusting module, and the pitching adjusting module is used for adjusting the pitching angle of the phased array antenna;
the AGV trolley is connected with the bottom end of the supporting platform and drives the supporting platform to walk.
The posture adjusting device has the beneficial effects that: the adjustment of position and gesture in the darkroom when can realize large-scale phased array antenna near field test through gesture adjusting device, the laser range sensor in the cooperation darkroom can realize adjusting and detecting the accuracy of antenna gesture, promotes phased array antenna near field test's efficiency and progress, reduces artifical intensity of labour simultaneously, improves test security.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, horizontal adjustment module is including platform, rotatory support and the driver part of rolling, the one end of rotatory support with supporting platform connects, the platform level that rolls sets up supporting platform is last, the bottom surface of the one end of the platform that rolls with the other end of rotatory support is articulated, driver part connects supporting platform is last, driver part's output with the other end of the platform that rolls is connected.
The beneficial effect of adopting the further scheme is that: the rolling platform rotates around the rotating support as an axis, small-range horizontal adjustment is achieved, the levelness of the direction adjusting module and the levelness of the pitching adjusting module are conveniently adjusted, and the adjusting accuracy of the direction adjusting module and the pitching adjusting module is improved.
Further, the driver part includes spiral lift, supporting seat and bar guide rail, the bar guide rail is established on the bottom surface of the other end of the platform that rolls, supporting seat sliding connection be in on the bar guide rail, spiral lift installs on the supporting platform, spiral lift's output with the supporting seat rotates to be connected, be equipped with on the rotatory support and be used for detecting the inclination's of the platform that rolls angular transducer.
The beneficial effect of adopting the further scheme is that: the spiral elevator is convenient to control to drive the rolling platform to keep the horizontal position.
Further, direction adjustment module includes driving motor, gear and fan-shaped rack, driving motor fixed connection be in the upper surface of the platform that rolls, the gear with driving motor's output is connected, fan-shaped rack with gear engagement, fan-shaped rack slides and establishes the upper surface of the platform that rolls, every single move adjustment module's bottom with fan-shaped rack fixed connection.
The beneficial effect of adopting the further scheme is that: the orientation angle of the phased array antenna can be adjusted conveniently.
Furthermore, be equipped with a plurality of sliders on the fan-shaped rack, it is fixed with the arc guide rail to roll on the upper surface of platform, and is a plurality of slider sliding connection is in on the arc guide rail.
The beneficial effect of adopting the further scheme is that: do benefit to being connected of fan-shaped rack and platform that rolls for every single move adjusting module passes through fan-shaped rack with the platform that rolls and is connected, improves every single move adjusting module's stability.
Further, every single move adjustment module includes the base, is used for installing phased array antenna's fixing base, motor, screw-nut and hydraulic telescoping rod, the base with direction adjustment module's output is connected, screw-nut connects on the base, the one end of fixing base with the base rotates to be connected, hydraulic telescoping rod's one end with screw-nut's output rotates to be connected, the other end with the fixing base rotates to be connected, the motor with the screw-nut transmission is connected, drives the screw-nut operation.
The beneficial effect of adopting the further scheme is that: the pitching angle of the phased array antenna can be adjusted conveniently, so that the phased array antenna is kept in a vertical state.
Drawings
FIG. 1 is a schematic flow chart of a method for adjusting an attitude of the present invention;
FIG. 2 is a schematic structural diagram of a three-dimensional model according to the present invention;
FIG. 3 is a schematic view of a coordinate system of the present invention;
FIG. 4 is a front view of the attitude adjustment apparatus of the present invention;
FIG. 5 is a right side view of the attitude adjustment apparatus of the present invention;
FIG. 6 is a schematic structural diagram of a leveling module according to the present invention;
FIG. 7 is a schematic diagram of an adjustment state of the leveling module according to the present invention;
FIG. 8 is a schematic view of another adjustment state of the horizontal adjustment module according to the present invention;
FIG. 9 is a schematic structural diagram of a direction adjustment module according to the present invention;
FIG. 10 is a schematic diagram of a pitch module according to one embodiment of the present invention;
fig. 11 is a schematic structural diagram of another state of the pitch adjustment module of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. AGV dolly, 2, supporting platform, 3, direction adjustment module, 4, horizontal adjustment module, 5, every single move adjustment module, 6, rotating support, 7, spiral elevator, 8, platform that rolls, 9, supporting seat, 10, bar guide rail, 11, inclination sensor, 12, driving motor, 13, gear, 14, fan-shaped rack, 15, arc guide rail, 16, slider, 17, screw-nut, 18, hydraulic telescoping rod, 19, fixing base, 20, phased array antenna, 21, base.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1 to 3, the present embodiment provides an attitude adjustment method using the apparatus for adjusting an attitude of a phased array antenna during near field test, including the following steps:
step 1: and controlling the measuring probe to walk for a circle along a rectangular route in a vertical plane relative to the phased array antenna to form the rectangular route, and acquiring the distances of the measuring probe to four corresponding points on the rectangular route and the distance antenna according to the measuring probe. Wherein, four points of the rectangular route are four corners of the rectangular route. The laser sensor is arranged on the measuring probe, and the distance between the measuring probe and the phased array antenna can be measured. The four points of the rectangular route are A1, B1, C1 and D1 respectively, the width of the rectangular route is W, the height of the rectangular route is H, and the corresponding four points on the antenna are A, B, C and D respectively. And connecting points A1, B1, C1, D1, A, B, C and D to form a three-dimensional model, obtaining L1, L2, L3 and L4, and calculating the azimuth angle and the pitch angle of the phased array antenna according to the three-dimensional model. Wherein the rectangular path is directly opposite the phased array antenna. Wherein the measuring probe is a point. The values of L1, L2, L3 and L4 were measured by laser sensors.
Step 2: and calculating the azimuth angle and the pitch angle according to the distances L1, L2, L3 and L4 of the phased array antenna from the measuring probe. The distance between AA1 is L1, the distance between BB1 is L2, the distance between CC1 is L3, and the distance between DD1 is L4.
Step 21: establishing a three-dimensional rectangular coordinate system (x, y, z) by taking the ground as a horizontal plane and a point P projected to the ground by a point D1 as a coordinate origin, wherein the distance between the point P and a point D1 is L5;
step 22: obtaining coordinates A1 of four points of the rectangular route: (0, 0, L5+ W)
B1：(0，H，L5+W)
C1：(0，H，L5)
D1：(0，0，L5)；
Obtaining coordinates A of four corresponding points on the phased array antenna: (L1, 0, L5+ W)
B：(L2，H，L5+W)
C：(L3，H，L5)
D：(L4，0，L5)
Wherein H is the length of the rectangular path, W is the width of the rectangular path, and L5 is the distance from D1 to point P;
step 23: according to the trigonometric function, the included angle between AD and A1D1 is calculated
BC and B1C1
And the angle β between CD and C1D 1.
Step 231, included angle between AD and A1D1
The following formula I is adopted for calculation:
where H is the length of the rectangular path and W is the width of the rectangular path.
Step 232, angle between BC and B1C1
The following formula two is adopted for calculation:
where H is the length of the rectangular path and W is the width of the rectangular path.
In step 233, the included angle β between the CD and the C1D1 is calculated by the following formula III:
where H is the length of the rectangular path and W is the width of the rectangular path.
Step 24: the pitch angle is an included angle between AD and A1D1
And the angle between BC and B1C1
Is the average value of
The specific pitch angle is
The orientation angle is the angle beta between the CD and the C1D 1.
And step 3: and adjusting the azimuth angle of the phased array antenna by the azimuth angle operation direction adjusting module 3 according to the obtained azimuth angle. Specifically, the driving motor 12 is started, the gear 13 drives the sector rack 14 to move, and then the phased array antenna is driven to rotate.
And 4, step 4: the pitching adjusting module 5 is operated according to the obtained pitching angle to adjust the azimuth angle of the phased array antenna, the lead screw nut 17 is driven to move by starting the motor, the hydraulic telescopic rod 18 supports the fixing seat 19, and then the angle of the fixing seat 19 is adjusted, so that the phased array antenna is kept in a vertical state.
And 5: and detecting differences among L1, L2, L3 and L4, judging that the differences are not qualified if the differences are not 0, and repeating the steps 1-4 until L1-L2-L3-L4. And when the L1 is equal to L2 is equal to L3 is equal to L4, the phased array antenna is judged to be qualified, and the phased array antenna is adjusted.
The coordinates of the four points of the antenna A, B, C, D at this time are:
A：(L，0，L5+W)
B：(L，H，L5+W)
C：(L，H，L5)
D：(L，0，L5)
at this time, the spatial coordinate matrix of the antenna is:
thus, the adjustment of the attitude of the phased array antenna is completed.
The technical effect of this embodiment is, through the attitude adjustment method, establish into the model with the distance between phased array antenna and the measurement probe, through calculating the angle to the model, can obtain the angle that needs the adjustment, carry out actual adjustment again, can realize the adjustment of position and gesture in the darkroom when large-scale phased array antenna near field test, the laser range finding sensor in the cooperation darkroom, can realize accurate adjustment and detection to the antenna gesture, promote the efficiency and the progress of phased array antenna near field test, reduce artifical intensity of labour simultaneously, improve test security.
As shown in fig. 4 to fig. 11, this embodiment further provides a corresponding attitude adjusting apparatus for a phased array antenna during near field test, including: the device comprises a supporting platform 2, a horizontal adjusting module 4, a direction adjusting module 3 and a pitching adjusting module 5 for placing a phased array antenna.
The horizontal adjusting module 4 is connected to the supporting platform 2. The direction adjusting module 3 is connected to the output end of the horizontal adjusting module 4. The pitch adjustment module 5 is connected to the output of the direction adjustment module 3.
Wherein 2 horizontal settings of supporting platform, supporting platform 2 is used for playing the supporting effect. The horizontal adjusting module 4 is used for adjusting levelness, and can ensure that the direction adjusting module 3 and the pitching adjusting module 5 keep a horizontal state, thereby being beneficial to improving the precision of the direction adjusting module 3 and the pitching adjusting module 5. The direction adjusting module 3 is used for adjusting the horizontal direction of the phased array antenna, and the pitching adjusting module 5 is used for adjusting the pitching angle of the phased array antenna, so that the phased array antenna is kept in a vertical state. Wherein, be provided with laser range finding sensor in the darkroom, can detect this attitude adjusting device and phased array antenna's position. The pitching adjusting module 5 is directly connected with the antenna, so that the adjustment of the antenna in a large range of angles and the accurate adjustment around 90 degrees can be realized. The horizontal adjustment module 4 realizes the small-range accurate adjustment of the roll angle of the antenna. The azimuth adjusting module realizes the small-range accurate adjustment of the azimuth angle of the antenna.
The technical scheme of this embodiment has following effect, can realize the adjustment of position and gesture in the darkroom when large-scale phased array antenna near field test through attitude adjusting device, and the laser range finding sensor in the cooperation darkroom can realize adjusting and detecting the accuracy of antenna gesture, promotes phased array antenna near field test's efficiency and progress, reduces artifical intensity of labour simultaneously, improves the test security.
Still include AGV dolly 1, AGV dolly 1 with supporting platform 2's bottom is connected, through AGV dolly 1 drives supporting platform 2 walking. The AGV cart 1 is a transport vehicle equipped with an electromagnetic or optical automatic navigation device, capable of traveling along a predetermined navigation route, and having safety protection and various transfer functions. The AGV trolley 1 is prior art. Conveniently drive supporting platform 2 through AGV dolly 1 and remove to conveniently drive phased array antenna and remove.
Preferably, in this embodiment, horizontal adjustment module 4 includes rolling platform 8, rotating support 6 and driver part, rotating support 6's one end with supporting platform 2 connects, 8 levels of rolling platform set up on supporting platform 2, the bottom surface of 8 one end of rolling platform with rotating support 6's the other end is articulated, driver part connects on supporting platform 2, driver part's output with the other end of rolling platform 8 is connected. The other end of the rolling platform 8 is driven by the driving part to move up and down, so that the rolling platform 8 rotates around the rotating support 6 as an axis, and horizontal adjustment in a small range is realized.
Wherein, be equipped with on the bottom surface of the one end of platform 8 that rolls and rotate the seat, the other end of rotary support 6 rotates through the pivot with rotating the seat and is connected.
Preferably, in this embodiment, driving part includes spiral lift 7, supporting seat 9 and bar guide rail 10, bar guide rail 10 is established on the bottom surface of the other end of platform 8 rolls, supporting seat 9 sliding connection be in on the bar guide rail 10, spiral lift 7 is installed on supporting platform 2, spiral lift 7's output with supporting seat 9 rotates and connects, be equipped with on the rotating support 6 and be used for detecting the inclination's of platform 8 tilt angle sensor 11 rolls. The spiral elevator 7 through setting up conveniently drives the upset platform and rotates, and the adjustment levelness can detect the inclination of platform 8 that rolls through inclination sensor 11 to conveniently control spiral elevator 7 and drive platform 8 that rolls and keep horizontal position. When the output end of the spiral elevator 7 pushes the rolling platform 8, the support seat 9 can slide on the strip-shaped guide rail 10, so that the rolling platform 8 can be driven to rotate.
Preferably, in this embodiment, the direction adjustment module 3 includes driving motor 12, gear 13 and fan-shaped rack 14, driving motor 12 fixed connection is in the upper surface of the platform 8 that rolls, gear 13 with driving motor 12's output is connected, fan-shaped rack 14 with gear 13 meshes, fan-shaped rack 14 slides and establishes the upper surface of the platform 8 that rolls, the bottom of every single move adjustment module 5 with fan-shaped rack 14 fixed connection. The driving motor 12 drives the gear 13 to rotate, so that the sector rack 14 moves along the arc direction, and the pitch adjusting module 5 is driven to rotate. Wherein fan-shaped rack 14 is equipped with two, and two fan-shaped racks 14 all are connected with pitch adjusting module 5's bottom for the equilibrium is better, and one of them fan-shaped rack 14 and gear 13 meshing. Wherein, the output end of the driving motor 12 is provided with a speed reducer, so that the gear 13 rotates slowly, and the rotating precision of the pitching adjusting module 5 is driven to be higher.
Preferably, in this embodiment, a plurality of sliders 16 are disposed on the sector rack 14, an arc-shaped guide rail 15 is fixedly disposed on the upper surface of the rolling platform 8, and the plurality of sliders 16 are slidably connected to the arc-shaped guide rail 15. Make fan-shaped rack 14 can slide on platform 8 rolls, do benefit to fan-shaped rack 14 and the platform 8 that rolls and be connected for pitch adjusting module 5 passes through fan-shaped rack 14 with platform 8 that rolls and is connected, improves pitch adjusting module 5's stability.
Preferably, in this embodiment, the pitching adjustment module 5 includes a base, a fixing seat 19 for installing the phased array antenna, a motor, a screw nut 17 and a hydraulic telescopic rod 18, the base is connected with the output end of the direction adjustment module 3, the screw nut 17 is connected on the base, one end of the fixing seat 19 is connected with the base in a rotating manner, one end of the hydraulic telescopic rod 18 is connected with the output end of the screw nut 17 in a rotating manner, the other end of the hydraulic telescopic rod is connected with the fixing seat 19 in a rotating manner, and the motor is connected with the screw nut 17 in a transmission manner to drive the screw nut 17 to operate. The pitching angle of the phased array antenna can be adjusted conveniently, the adjustment range is wide, and the precision is high.
Wherein, when the motor rotates, drive feed screw nut 17 and rotate for hydraulic telescoping rod 18 expandes, props up fixing base 19 through hydraulic telescoping rod 18, thereby realizes at the within range adjustment of 90 degrees, and the control range is wide, when needs examine time measuring, can stick up phased array antenna, when need not examine time measuring, can place phased array antenna transversely, does benefit to the protection to phased array antenna. Wherein the feed screw nut 17 is prior art.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
It is to be noted that "comprising" in the present invention means that it may include other components in addition to the components described, and the "comprising" may be replaced with "being" or "consisting of … …" in a closed manner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for adjusting the attitude of a phased array antenna during near field test is characterized by comprising the following steps:
controlling the measuring probe to walk for a circle along a rectangular route in a vertical plane relative to the phased array antenna, and selecting a plurality of points of the measuring probe on the rectangular route and a plurality of corresponding points on the phased array antenna to obtain the distance between the two relative points;
calculating the azimuth angle and the pitching angle of the phased array antenna according to the obtained distance between the two opposite points and the length and the width of the rectangular route;
adjusting the azimuth angle adjustment of the phased array antenna according to the obtained azimuth angle;
adjusting the pitching angle adjustment of the phased array antenna according to the obtained pitching angle;
and finishing the adjustment of the attitude of the phased array antenna.
2. The attitude adjustment method for a phased array antenna during near field testing according to claim 1, wherein the number of points of the measuring probe on the rectangular path is four, a1, B1, C1 and D1, the width of the rectangular path is W, and the height of the rectangular path is H, the number of corresponding points on the phased array antenna is four, A, B, C and D, and the distances from the four points on the rectangular path to the corresponding four points on the phased array antenna are L1, L2, L3 and L4, respectively.
3. The attitude adjustment method for the phased array antenna during the near field test according to claim 2, wherein the method for calculating the azimuth angle and the elevation angle of the phased array antenna according to the obtained distance between the two relative points and the length and the width of the rectangular route comprises the following steps:
establishing a three-dimensional rectangular coordinate system (x, y, z) by taking the ground as a horizontal plane and taking a point P projected to the ground by a point D1 as a coordinate origin
The distance between D1 and the point P is L5; determining the coordinates of four points of the rectangular route as follows:
A1：(0，0，L5+W)
B1：(0，H，L5+W)
C1：(0，H，L5)
D1：(0，0，L5)；
determining coordinates of four corresponding points on the phased array antenna as:
A：(L1，0，L5+W)
B：(L2，H，L5+W)
C：(L3，H，L5)
D：(L4，0，L5)
and connecting points A1, B1, C1, D1, A, B, C and D to form a three-dimensional model, and calculating the azimuth angle and the pitch angle of the phased-array antenna according to the three-dimensional model.
4. The method for adjusting the attitude of the phased array antenna during the near field test according to claim 3, wherein the calculation of the azimuth angle and the elevation angle of the phased array antenna according to the three-dimensional model is a calculation according to a trigonometric function, and the included angle between AD and A1D1
BC and B1C1
And the included angle beta between the CD and the C1D1, and the pitch angle is the included angle between the AD and the A1D1
And the angle between BC and B1C1
Is the angle β between CD and C1D 1.
5. The method for adjusting the attitude of the phased array antenna during the near field test according to claim 4, wherein the included angle between the AD and the A1D1
The following formula I is adopted for calculation:
where H is the length of the rectangular path and W is the width of the rectangular path.
6. The phased array antenna near field test attitude adjustment method as claimed in claim 4, wherein the attitude adjustment method is characterized in thatIn that the angle between BC and B1C1
The following formula two is adopted for calculation:
where H is the length of the rectangular path and W is the width of the rectangular path.
7. The attitude adjustment method for the phased array antenna during the near field test according to claim 4, wherein the included angle β between the CD and the C1D1 is calculated by the following formula III:
where H is the length of the rectangular path and W is the width of the rectangular path.
8. The method for adjusting the attitude of the phased array antenna during the near field test according to claim 2, wherein after the adjustment of the pitch angle of the phased array antenna according to the obtained pitch angle is completed, the method further comprises the step of detecting whether the adjustment of the phased array antenna is qualified, if so, the adjustment of the phased array antenna is completed, otherwise, the adjustment is performed again from the beginning.
9. The attitude adjustment method for the phased array antenna during the near field test according to claim 8, wherein the step of detecting whether the phased array antenna is adjusted to be qualified or not comprises the following steps:
after the azimuth angle and the pitch angle of the phased array antenna are adjusted, L1, L2, L3 and L4 are measured again, if L1 is equal to L2 and equal to L3 and equal to L4, the phased array antenna is judged to be qualified, and otherwise, the phased array antenna is not qualified.
10. An attitude adjustment apparatus using the attitude adjustment method at the time of near field test of a phased array antenna according to any one of claims 1 to 9, comprising:
a support platform (2);
the horizontal adjusting module (4), the horizontal adjusting module (4) is connected to the supporting platform (2);
the direction adjusting module (3), the direction adjusting module (3) is connected to the output end of the horizontal adjusting module (4), and the direction adjusting module (3) is used for adjusting the azimuth angle of the phased array antenna;
a pitching adjusting module (5) for placing the phased array antenna, wherein the pitching adjusting module (5) is connected to the output end of the direction adjusting module (3), and the pitching adjusting module (5) is used for adjusting the pitching angle of the phased array antenna;
AGV dolly (1), AGV dolly (1) with the bottom of supporting platform (2) is connected, through AGV dolly (1) drives supporting platform (2) walking.
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