CN102749068A - Installation precision detection method for planar array antenna surface - Google Patents
Installation precision detection method for planar array antenna surface Download PDFInfo
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- CN102749068A CN102749068A CN2012102439372A CN201210243937A CN102749068A CN 102749068 A CN102749068 A CN 102749068A CN 2012102439372 A CN2012102439372 A CN 2012102439372A CN 201210243937 A CN201210243937 A CN 201210243937A CN 102749068 A CN102749068 A CN 102749068A
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Abstract
The invention discloses an installation precision detection method for a planar array antenna surface. A level-1'' level gauge is arranged just in front of an antenna skeleton; the side surface of an antenna is provided with a universal swivel table; a level-1'' theodolite is erected on the universal swivel table; and an antenna is detected by the theodolite, a depthometer and the level gauge. The installation precision detection method for the planar array antenna surface, which is disclosed by the invention, has the advantages of high detection precision, convenience and rapidness in detection, simple detection system structure, easiness in disassembling and assembling and the like.
Description
Technical field
The present invention relates to a kind of installation accuracy detection method of planar array antenna face.
Background technology
It is the feeder system of main body that antenna reaches with the antenna, thereby is to realize radar emission and the important component part that receives space electromagnetic wave realization radar basic function.Radar antenna has curved face type and two kinds of diverse versions of array type substantially, because array antenna helps realizing the high maneuverability and the Low Sidelobe of radar more, thereby has obtained increasingly extensive application, has become the primary structure form of modern radar.
For the traditional reflective surface antenna; The profile great majority of array antenna are the plane; Profile is more regular; It is by some mutual orthogonals of beam and add the connection structure that upper enclosure frame constitutes front skeleton and the some of trave formula the multi-in-line source is installed on the front skeleton in length and breadth, thereby has formed complete front, outer likeness in form upright or " door-plate " stretching across.As the product of electromechanical integration, the version of array antenna, size, precision etc. all receive the restriction of electric property, and directly influence the complete machine telecommunication index of radar, and wherein the precision of antenna reflective face is just directly related with the working frequency range of radar.Because the surface error of each point is different on the front, the antenna actinal surface no longer is a cophasal surface, thereby antenna pattern is changed, and gain descends, and minor level raises.Theoretical analysis shows that what really determine electrical property is the size and the distribution situation of front error, i.e. the maximal value of mean square of error root, rather than individual point error.
The function of radar principle has determined must occupy a commanding position under antenna in working order; Its high maneuverability also requires between work and travel position, will change mutually easily and efficiently, so the front of planar array antenna is divided into upper and lower two usually and is convenient to folding the stretching, extension and realizes above requirement.Because planar array antenna is rectangular, physical dimension is bigger usually: length >=5m, wide >=3m.In working order down; Front main shaft and incomplete level; The certain angle (8 °～15 °) of generally all will swinging back, therefore, how whole front is installed and the surface accuracy that reaches antenna requires in other words; How the surface accuracy of planar array antenna assembles quickly and accurately, adjusts, detects---and particularly how surface accuracy detects under the duty of tiltedly holding up, and just becomes difficulty, emphasis in the radar manufacturing.
The process and the method for existing detection antenna array surface accuracy comprise following step: after 1) upper and lower skeleton processing coated is accomplished; Physical dimension by the antenna array skeleton is arranged, cleans the assembly yard, is taken corresponding assembling plate; On flat board, take and adorn large-scale right angle backer; And with frame level and transit, the level(l)ing washer level is also vertical with backer's face; 2) crane cooperates, and will go up the lower back frame and link with directly having backing with bolt, pressing plate, and the crane cooperation is loaded onto journal stirrup plane or flange face and last lower back frame with bone and linked, the general assembly of formation skeleton; 3) the antenna pedestal assembly with radar is lifted on the assembling plate; Be level with frame level school antenna pedestal assembly installed surface and also link with pressing plate, bolt and assembling plate, crane cooperates, and the general assembly of lifting skeleton connects the vertical frame assembly that is assembled into the antenna pedestal assembly; 4) take front and the side of tripod at frame assembly, and set up collimating telescope, transit, an adjustment skeleton in school is parallel repeatedly reaches perpendicular to horizontal line; 5) transit cooperates the indium steel ruler, and the waveguide mounting blocks plane on the skeleton is detected, adjusted, and guarantees flatness error≤0.2mm; 6) prepackage waveguide mount; Wouldn't be fastening; With collimating telescope (containing tripod); Vertically detect, adjust the linearity of each serrate slot one side of waveguide mount line by line; After guaranteeing straightness error≤0.2mm, cooperate spirit-leveling instrument, pit gauge, guarantee flatness error≤0.2mm each the baseplane adjustment of waveguide mount serrate slot, repair level; And according to data measured value (l) and count (n) that measure; Calculate the arithmetic mean
and the residual error (V) of measurement data, calculate front trueness error σ:
according to the Bezier formula adorn fixedly waveguide mount, fastening waveguide mount screw then; And the hole installing and locating pin that drills and reams, line source is installed at last.The antenna movement test comprises rotates test, roll-over test and pitching test.
The maximum shortcoming of this kind detection method is: repeat surface accuracy after can't detecting antenna array rotation, upset, luffing; In the time of can't detecting, eliminate radar duty (8 °～15 ° angles of swinging back), the skeleton deadweight causes framework deformation, causes the influence to the antenna array surface accuracy; Can't detect the elevation angle error of antenna, and the vertical assembling waveguide mount of skeleton, vertically, when laterally adjusting bottom land flatness, side linearity one by one, line by line, big, the inefficiency of workload; And need purchase collimating telescope; And in testing process, for overproof part, because vertical assembling; Therefore it is also very difficult to carry out local repair, adjustment, and personnel are also dangerous because of being in high-rise working for a long time.
Summary of the invention
The present invention is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of installation accuracy detection method of planar array antenna face is provided, so that the assembling rapidly and accurately and the adjustment of planar array antenna.
The present invention adopts following technical scheme for the technical solution problem.
The installation accuracy detection method of planar array antenna face may further comprise the steps:
A. set up 1 in the antenna frame dead ahead " level spirit-leveling instrument; In the skeleton side flat board being set, on said flat board, swivel table being installed, with 1, " level transit frame on swivel table, swivel table pitch angle to 0 ° is regulated in the dull and stereotyped back of smoothing;
B. detect the upper surface of antenna frame with transit and pit gauge, at the flatness≤0.2mm of upper surface, spirit-leveling instrument is measured the levelness≤0.2mm of antenna frame upper side, after meeting the requirements, and the fixed antenna skeleton;
C. use on transit and the pit gauge complete detection baseplane degree of waveguide mount serrate slot on the lower skeleton, guarantee flatness≤0.2mm;
D. the exercise test of antenna frame is carried out in energising: rotate test, roll-over test and pitching test;
E. after the antenna movement test is accomplished; Detect repetitive positioning accuracy: with the flatness≤0.2mm of the serrate slot baseplane of waveguide mount on the lower skeleton on transit and pit gauge, the spirit-leveling instrument complete detection; Linearity on each waveguide mount between its respective grooves, verticality≤0.2mm, the surface accuracy error σ of the antenna array of resuming classes is if error σ is greater than predetermined value; Then adjust antenna array once more, return step b;
F. adjust swivel table, make the inclination of transit between transverse axis is done 0 °～15 ° by the angle requirement of antenna elevation angle, with transit check and correction antenna elevation angle precision;
G. after all the exercise test of antenna frames each item index of accomplishing and detecting antenna array reached requirement, inspection installation securing member everywhere once more, and the hole installing and locating pin that drills and reams at the waveguide mount two ends, were installed line source at clean.（。）
The design feature of the installation accuracy detection method of planar array antenna face of the present invention also is:
Said swivel table comprises microscler base, top disc and two handwheels of band U-lag mouth.
Compared with present technology, beneficial effect of the present invention is embodied in:
(1) accuracy of detection is high; Assembling, detection are owing to adopt 1 " level transit and 1 " spirit-leveling instrument, and accuracy of instrument is higher, and accuracy of detection can reach 0.05mm.
(2) assembling, adjustment are simply; Elder generation is on the flat board, under the free state before assembling; Assemble, adjust the flatness of upper and lower skeleton and the extremely certain requirement of base point accuracy σ of line source mounting bracket respectively; Make original needs all carry out 70% in the workload of space, three-dimensional assembling, adjustment; Conversion is for level, floor-mounted, adjustment, and this measure can reduce labour intensity greatly and significantly boost productivity.
(3) detection reference and check point accuracy of reading, convenient; In assembling and detecting; " transit is formed measuring system, when antenna array face and transit not during coplane; can exactly it be finely tuned to coplane through the rotation of omnipotent rotary table; guarantee the correctness of front detection reference, and adopt transit to observe and measure basic bar reading value, measure the individual point value of adopting of hundreds of accurately and rapidly to adopt omnipotent rotary table, and with 1.
(4) frock is simple and easy, and cost is low; " transit is formed, and saved the acquisition expenses of special detector collimating telescope, and its accuracy of detection is identical with it, has guaranteed the detection requirement because detection system is to adopt the omnipotent rotary table and 1 of coordinate boring.
(5) testing state front angle is accurate; When antenna array face pitching to work clothes attitude, to tilt through the rotation universal table, and proofread and correct with transit, this moment, universal table pitch angle reading was the antenna array angle of inclination.
Detection method of the present invention, tool structure is simple and easy to adjust, have the accuracy of detection height, easy to detect quick, detection system is simple in structure and advantage such as easy disassembling, is suitable for the installation and measuring of big-and-middle-sized front antenna.
Description of drawings
Fig. 1 is frock and the front view of antenna of the installation accuracy detection method of planar array antenna face of the present invention.
Fig. 2 is frock and the vertical view of antenna of the installation accuracy detection method of planar array antenna face of the present invention.
Fig. 3 is the left view of antenna of the installation accuracy detection method of planar array antenna face of the present invention.
Label in accompanying drawing 1～accompanying drawing 3: 1 antenna frame, 2 spirit-leveling instruments, 3 flat boards, 4 swivel tables, 5 transits, 6 waveguide mounts, 7 antenna pedestals, 8 base plates, 9 ground, 10 upper skeletons, 11 lower skeletons, 12 switching mechanisms, 13 crack waveguides, 14 transit camera lenses.
Below pass through embodiment, and combine accompanying drawing that the present invention is described further.
Embodiment
Antenna is arranged on the antenna pedestal 7, and antenna pedestal 7 is arranged on the base plate 8 on the ground 9.Antenna comprises antenna frame 1 and antenna pedestal 7, and antenna frame 1 comprises upper skeleton 10 and lower skeleton 11, and upper skeleton 10 all is connected with antenna pedestal 7 through switching mechanism 12, and lower skeleton 11 is fixed on the antenna pedestal 7.The upper skeleton 10 and the lower skeleton 11 of antenna include waveguide mount 6 and crack waveguide 13.Transit camera lens 14 on the transit 5 can rotate up and down.
Referring to Fig. 1～Fig. 3, the installation accuracy detection method of planar array antenna face may further comprise the steps:
A. set up 1 in antenna frame 1 dead ahead " level spirit-leveling instrument 2; Be provided with in the skeleton side dull and stereotypedly 3, swivel table 4 be installed, on said dull and stereotyped 3 that " 5 in level transit on swivel table 4, swivel table 4 pitch angle to 0 ° are regulated in the dull and stereotyped back of smoothing with 1;
B. detect the upper surface of antenna frame 1 with transit 5 and pit gauge, at the flatness≤0.2mm of upper surface, spirit-leveling instrument 2 is measured the levelness≤0.2mm of antenna frame 1 upper side, after meeting the requirements, and fixed antenna skeleton 1;
C. use on transit 5 and the pit gauge complete detection baseplane degree of waveguide mount 6 serrate slots on the lower skeleton, guarantee flatness≤0.2mm;
D. the exercise test of antenna frame 1 is carried out in energising: rotate test, roll-over test and pitching test;
E. after the antenna movement test is accomplished; Detect repetitive positioning accuracy: with the flatness≤0.2mm of the serrate slot baseplane of waveguide mount 6 on the lower skeleton on transit 5 and pit gauge, spirit-leveling instrument 2 complete detection; Linearity, verticality≤0.2mm on each waveguide mount 6 between its respective grooves, the surface accuracy error σ of the antenna array of resuming classes is if error σ is greater than predetermined value; Then adjust antenna array once more, return step b;
F. adjust swivel table 4, make the inclination of transit 5 between transverse axis is done 0 °～15 ° by the angle requirement of antenna elevation angle, with transit 5 check and correction antenna elevation angle precision;
G. after all the exercise test of antenna frames each item index of accomplishing and detecting antenna array reached requirement, inspection installation securing member everywhere once more, and the hole installing and locating pin that drills and reams at waveguide mount 6 two ends, were installed line source at clean.。
Said swivel table 4 comprises microscler base, top disc and two handwheels of band U-lag mouth.
Said swivel table is the conventional annex of jig boring machine; Can rotate arbitrarily angled through one of them handwheel adjustment turntable upright axis; Through the angle of another handwheel adjustment turntable between transverse axis rotates 0 °～90 °, easy to adjust quick, only need to move from jig boring machine; Transit is installed is then above that got final product, realize easily simple.
The installation and the testing process of front antenna are following:
(1) assembling plate is taken in assembly, and with spirit-leveling instrument, height gauge school leveling board level, guarantees assembling plate flatness error≤0.2mm; On/after lower skeleton machine work, coated are accomplished; With skeleton upper journal plane or flange face is benchmark, will go up respectively/lower skeleton is flat on the flat board that the school mixes up, do not press-fit; Let/lower skeleton is in free state, adopts four jiaos of levels of frame level thick school skeleton;
(2) with on spirit-leveling instrument, the height gauge complete detection/plane that the mounting blocks of waveguide mount forms is installed (according to radar front size on the lower skeleton; About 90～110 of upper skeleton mounting blocks; About 100～130 of lower skeleton mounting blocks): the height gauge base is positioned on each mounting blocks plane; Read the height dimension of each mounting blocks with spirit-leveling instrument, find out wherein peak or face, and make the measured value sign in the relevant position;
(3) measured value is exceeded the point on the mounting blocks of flatness 0.2mm, or the face of mounting blocks, shovel, mill equating; Repetition measurement: choose/following front mounting blocks measures the intermediate value in the ident value; With this mounting blocks is that measuring basis-with its height dimension is the value at zero point, detects the height of all the other each mounting blocks, calculates difference; Guarantee difference≤0.2mm, promptly guaranteed the flatness error≤0.2mm of integral installation piece; Identify the measurement difference in each mounting blocks relevant position, with installation convenient for assembly and the adjustment waveguide mount;
(4) with the zero-bit mounting blocks that identifies serve as the starting point of assembling waveguide mount; The reference field of installing with transit, spirit-leveling instrument, pit gauge monitoring line source is promptly: the side plane of each waveguide mount serrate slot is the flatness of (X to) error, each waveguide mount serrate slot end face and the verticality of notch promptly vertical (Y to) error, serrate slot baseplane (Z to) error promptly laterally; According to the height difference of having surveyed with pad regulate (aluminum foil strip 3A21 (O) ≠ 0.1 * 100 * 1000, ≠ 0.2 * 100 * 1000, ≠ 0.5 * 100 * 1000 join, be cut into pad and use), and come the flatness≤0.2mm of real-time detection waveguide mount serrate slot baseplane with spirit-leveling instrument and pit gauge.
(5) after each waveguide mount assembling was accomplished, the installation of repetition measurement waveguide mount met the requirements: linearity, verticality≤0.2mm on the flatness≤0.2mm of its serrate slot baseplane, each waveguide mount between its respective grooves, and make survey record.
(6) according to count (n) of data measured value (li) and measurement, the arithmetic mean
and the residual error
that calculate measurement data calculate front trueness error σ according to the Bezier formula:
(7) upper and lower skeleton waveguide mount assembling, detect and accomplish and when meeting the requirements; Carry out the assembling of antenna frame assembly: the physical dimension by the antenna array skeleton is arranged, cleans the assembly yard, is taken corresponding assembling plate; With journal stirrup or the flange face on the lower skeleton in the lower back frame utilization on the antenna; With last lower skeleton pre-assembled, and adjustment, school transfer the back fixing.
(8) the antenna pedestal assembly levelling with radar also links with pressing plate, bolt and assembling plate; And counterweight dull and stereotyped (general counterweight >=6 tons) is fixed maintenance balance and safety on assembling plate; The driving protection, the general assembly of lifting skeleton is connected on the antenna pedestal assembly.
(9) require to set up optical instrument: set up 1 that " the level spirit-leveling instrument is installed swivel table on high 1 meter welding support in skeleton side and welding plate in the positive front of skeleton according to the assembly yard.Swivel table mainly is made up of microscler base, top disc and two handwheels of band U-lag mouth.Wherein, utilize the U-lag mouth of base can swivel table be fixed on the platform easily, utilize the T-slot on the top disc can transit be clamped on the disk.Rotation top handwheel; Can make arbitrarily angled around between 0 °～360 ° of the Z-axis revolutions of disk and transit; Rotation bottom handwheel; Can make disk and transit do 0 °～90 ° inclination around transverse axis, the rotating reading accuracy of disk is 1 ", satisfy check, measure antenna array elevation angle error≤± 0.1 ° of accuracy requirement." level transit frame on swivel table, swivel table pitch angle to 0 ° is regulated in the dull and stereotyped back of smoothing with 1.
(10) detect four technological datum points (being the upper surface of four jiaos of places of skeleton waveguide mount) of going up lower skeleton with transit and pit gauge; Its flatness≤0.2mm; Spirit-leveling instrument is measured the levelness≤0.2mm of antenna frame upside; After meeting the requirements, fastening each connector of going up lower skeleton and going up the lower back frame.
(11) with the baseplane degree of waveguide mount serrate slot on the lower skeleton on transit and the pit gauge complete detection, guarantee flatness≤0.2mm, otherwise should with adjustment.
(12) connect each circuit, the exercise test of antenna frame is carried out in energising: rotate test, roll-over test, pitching test.
(13) after the antenna movement test is accomplished; Detect repetitive positioning accuracy: with linearity, the verticality≤0.2mm between its respective grooves on the flatness≤0.2mm of the serrate slot baseplane of waveguide mount on the lower skeleton on transit and pit gauge, the spirit-leveling instrument complete detection, each waveguide mount; The surface accuracy of antenna array of resuming classes requires (root-mean-square value) to reach requirement, otherwise adjustment.
(14) the bottom handwheel of rotation swivel table makes disk and transit around the angle requirement of transverse axis by antenna elevation angle, and the inclination between doing 0 °～15 ° is proofreaded the antenna elevation angle precision with transit.
After all the exercise test of antenna frames each item index of accomplishing and detecting antenna array reached requirement, inspection installation securing member everywhere once more, and the hole installing and locating pin that drills and reams at the waveguide mount two ends, were installed line source at clean.
Claims (2)
1. the installation accuracy detection method of planar array antenna face is characterized in that, may further comprise the steps:
A. set up 1 in antenna frame (1) dead ahead " level spirit-leveling instrument (2); Flat board (3) is set in the skeleton side, at said flat board (3) swivel table (4) go up is installed, that " level transit (5) frame on swivel table (4), swivel table (4) pitch angle to 0 ° is regulated in the dull and stereotyped back of smoothing with 1.
B. use transit (5) and pit gauge to detect the upper surface of antenna frame (1), at the flatness≤0.2mm of upper surface, spirit-leveling instrument (2) is measured the levelness≤0.2mm of antenna frame (1) upper side, after meeting the requirements, and fixed antenna skeleton (1);
C. use on transit (5) and the pit gauge complete detection baseplane degree of waveguide mount (6) serrate slot on the lower skeleton, guarantee flatness≤0.2mm;
D. the exercise test of antenna frame (1) is carried out in energising: rotate test, roll-over test and pitching test.
E. after the antenna movement test is accomplished; Detect repetitive positioning accuracy: with the flatness≤0.2mm of the serrate slot baseplane of waveguide mount (6) on the lower skeleton on transit (5) and pit gauge, spirit-leveling instrument (2) complete detection; Each waveguide mount (6) is gone up linearity, the verticality≤0.2mm between its respective grooves, and the surface accuracy error σ of the antenna array of resuming classes is if error σ is greater than predetermined value; Then adjust antenna array once more, return step b;
F. adjust swivel table (4), make the inclination of transit (5) between transverse axis is done 0 °～15 ° by the angle requirement of antenna elevation angle, with transit (5) check and correction antenna elevation angle precision;
G. after all the exercise test of antenna frames each item index of accomplishing and detecting antenna array reached requirement, inspection installation securing member everywhere once more, and the hole installing and locating pin that drills and reams at waveguide mount (6) two ends, were installed line source at clean.
2. the installation accuracy detection method of planar array antenna face according to claim 1, said swivel table (5) comprise microscler base, top disc and two handwheels of band U-lag mouth.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103822618A (en) * | 2014-03-19 | 2014-05-28 | 哈尔滨工业大学 | Installation detecting device of large-caliber rib plate of radial rib antenna |
| CN103499332B (en) * | 2013-10-15 | 2015-08-12 | 西安电子工程研究所 | The method of antenna pedestal angle of pitch precision measurement apparatus and instrumentation radar pitching corner |
| CN105806192A (en) * | 2016-04-27 | 2016-07-27 | 航天材料及工艺研究所 | Guide rail assembling technological method for large composite box |
| CN106767677A (en) * | 2015-12-22 | 2017-05-31 | 中国电子科技集团公司第二十研究所 | A kind of measuring method for microwave guiding device orientation angle inspection |
| CN109990684A (en) * | 2019-03-27 | 2019-07-09 | 上海宇航系统工程研究所 | A kind of method of quick survey tune parabolic-cylinder antenna |
| CN112290233A (en) * | 2020-10-21 | 2021-01-29 | 航天南湖电子信息技术股份有限公司 | Large-scale multifrequency section is total to battle array face antenna |
| CN114083245A (en) * | 2021-12-17 | 2022-02-25 | 成都中电锦江信息产业有限公司 | Large array surface processing method based on virtual surface reference |
| CN114353709A (en) * | 2021-12-16 | 2022-04-15 | 武汉滨湖电子有限责任公司 | Surface precision adjusting method of multi-array-surface antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103499332B (en) * | 2013-10-15 | 2015-08-12 | 西安电子工程研究所 | The method of antenna pedestal angle of pitch precision measurement apparatus and instrumentation radar pitching corner |
| CN103822618A (en) * | 2014-03-19 | 2014-05-28 | 哈尔滨工业大学 | Installation detecting device of large-caliber rib plate of radial rib antenna |
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| CN105806192A (en) * | 2016-04-27 | 2016-07-27 | 航天材料及工艺研究所 | Guide rail assembling technological method for large composite box |
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| CN109990684A (en) * | 2019-03-27 | 2019-07-09 | 上海宇航系统工程研究所 | A kind of method of quick survey tune parabolic-cylinder antenna |
| CN109990684B (en) * | 2019-03-27 | 2021-03-09 | 上海宇航系统工程研究所 | Method for rapidly measuring and adjusting parabolic cylinder antenna |
| CN112290233A (en) * | 2020-10-21 | 2021-01-29 | 航天南湖电子信息技术股份有限公司 | Large-scale multifrequency section is total to battle array face antenna |
| CN112290233B (en) * | 2020-10-21 | 2022-05-17 | 航天南湖电子信息技术股份有限公司 | Large-scale multifrequency section is total to battle array face antenna |
| CN114353709A (en) * | 2021-12-16 | 2022-04-15 | 武汉滨湖电子有限责任公司 | Surface precision adjusting method of multi-array-surface antenna |
| CN114353709B (en) * | 2021-12-16 | 2023-08-04 | 武汉滨湖电子有限责任公司 | Method for adjusting plane precision of multi-array plane antenna |
| CN114083245A (en) * | 2021-12-17 | 2022-02-25 | 成都中电锦江信息产业有限公司 | Large array surface processing method based on virtual surface reference |
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