CN107086377A - The suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom - Google Patents
The suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom Download PDFInfo
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- CN107086377A CN107086377A CN201710265719.1A CN201710265719A CN107086377A CN 107086377 A CN107086377 A CN 107086377A CN 201710265719 A CN201710265719 A CN 201710265719A CN 107086377 A CN107086377 A CN 107086377A
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- mirror image
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- compact range
- battle array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption
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Abstract
The invention discloses a kind of suction wave reflection of Compact Range darkroom feed mirror image beam battle array control device, the device is mainly made up of Compact Range reflecting surface, feed, microwave dark room and mirror image beam regulator control system.Emerging wavefront alignment is adjusted to certain direction away from dead zone by the height of each absorbing material unit in control area, it is therefore an objective to which interference of the clutter to dead zone, such as feed mirror reflection are reflected in inhibition zone.The device is determined by parameters such as working frequency, feed height, dead zone height and Fresnel zone numbers.The low frequency mirror image beam control of the present invention has broadband reconfigurability, by the continuous control of MIRROR SITE internal reflection cell height, realizes the wideband operation in low frequency darkroom.
Description
Technical field
The present invention relates to the layout of the absorbing material in Compact Range darkroom, the suction wave reflection battle array of more particularly to a kind of feed mirror image
Control, it is mainly used in the low-frequency range work test of Compact Range, to lift low-frequency range antenna radiation pattern or radar target RCS
The performance of dead zone plane-wave field needed for test.
Background technology
With the development of advanced metre wave radar and Stealth weapons, the anti-stealthy confrontation with stealth technology in meter wave band is adding
The demand of play, metre wave radar antenna and Stealthy Target metric wave characteristic test is increasingly urgent.Traditional outdoor far field is tested in metric wave
There is the defect for being difficult to overcome in aspect, such as electromagnetic spectrum is crowded, ground mirror image and multipath are disturbed.Tighten field technology to survey in metric wave
Though there is irreplaceable important function in examination, equally limited by test space, feed ground Image interference still has,
And can not be filtered out with the normal wave-path in dead zone apart from close by range gate.The deflation that AUS is equipped in Arizona electronics target range
Field (desert, numerous and diverse electromagnetic environment away from business district), transformation in 2014 digs in feed ground mirror reflection area using large area
Cheat 80ft (width) × 80ft (length) × 9ft (depth) to handle, control back wave direction in order to avoid interference irradiation to reflecting surface, minimum work
Working frequency reaches 275MHz.Ground shaping modification measures are：The processing of ground axial ridged, deep-cuts minute surface distance to be reflected, increase
The incidence angle of ground mirror image controls mirror-reflection direction, interference of the reduction ground return energy to dead zone.What the program was implemented
The earthwork (area 600m2) excavated volume reach 1600m3, transformation outdoor sports can yet be regarded as the solution haveed no alternative but for it.But to interior
The Compact Range of work, if out-of-flatness influence process equipment in ground is installed or regular maintenance, and increase reflecting surface and feed ground
The difficulty and cost of integration.Which greatly limits the application of feed image rejection techniques.
The content of the invention
It is an object of the invention to：Propose a kind of suction wave reflection battle array control skill of feed mirror image beam in Compact Range darkroom
Art, irradiation of the reduction mirror image to reflecting surface, can correspond to adjustment unit and highly work in multiple frequency ranges, be not limited to some specific
Frequency range.
The present invention is in order to reach that foregoing invention purpose is adopted the following technical scheme that：
A kind of suction wave reflection battle array control device of feed mirror image beam in Compact Range darkroom, the Compact Range is main by reflecting
Face, feed, microwave dark room and mirror image beam regulator control system composition, wherein,
Described feed, is a kind of approximate spherical wave radiation source, for the final formation far field plane wave in dead zone of system
When initial sphere wave source is provided；
Described Compact Range reflecting surface, is precision machined curved surface, and usual central entity part is the paraboloid of revolution
Or sphere, the usual sawtooth in edge or curling processing, desired wavefront is converted to before field wave to correct, for by driving source
What is tightened after the reflection of electromagnetic wave sent in small distance forms required far field plane wave in FX；
Described microwave dark room, is to be constituted using absorbing material and metal shield, wall is incided for absorbing or controlling
Face, ceiling, the electromagnetic wave on ground；
Described mirror image beam regulator control system, is a kind of adjustable control system of absorbing material cell height, passes through control
The height of each absorbing material unit adjusts emerging wavefront alignment to certain direction away from dead zone in region, it is therefore an objective to inhibition zone
Interference of the reflection clutter to dead zone, such as feed mirror reflection, and by the continuous control of MIRROR SITE internal reflection cell height, can be real
The wideband operation in existing low frequency darkroom.
Wherein, described Compact Range, when being worked compared with low-frequency range (such as UHF or VHF wave bands), Image interference is larger, by adjusting
The height of whole MIRROR SITE absorbing material each unit, realizes the control of emerging wavefront phase to regulate and control mirror image beam, away from dead zone with
Reduction interference.
Wherein, the height of adjustment suction wave reflection array element works in broadband to match, and is not limited to electric or hand control
Realize, be not limited to some particular job frequency range.
Wherein, described mirror image beam control system, the height that wave reflection array element is inhaled in adjustment works in broadband to match,
It is not limited to electric or hand control to realize, is not limited to some particular job frequency range.
Wherein, described mirror image beam control system, suction wave reflection array element is highly laid out can be in relative bandwidth ± 5%
In arrowband regulate and control wave beam, working frequency in it is outer when adjustment each unit height, to keep optimal mirror image beam performance of control.
Wherein, the border for inhaling wave reflection battle array layout area is not vertical with the electric axis direction where Compact Range main beam, rotation
45 degree of irradiations to reflecting surface of more Sidelobe to realize mirror image beam after regulation and control, and with the highly consistent reduction volume of peripheral region
Outer discontinuous caused reflection.
Wherein, inhale wave reflection battle array mirror image beam control system and be arranged in the darkroom wall border for closing on feed, be not limited to
Certain the specified arrangement structure of Compact Range in darkroom, including feed are located at ground, side wall or ceiling.
Wherein, the reflecting surface mouthful face design that wave reflection battle array mirror image beam control system coordinates corresponding Compact Range is inhaled, not office
It is limited to the specific boundary form of reflecting surface, including sawtooth or curling processing.
Wherein, the reflection surface system that wave reflection battle array mirror image beam control system coordinates corresponding Compact Range is inhaled, is not limited to
Reflecting surface number or type, including single reflection face, dual or multi reflecting surface.
The principle of the present invention is as follows：
The principle that the present invention is controlled based on phased wave beam, by controlling in MIRROR SITE incident and eye point height to realize control
Phase alignment processed is to certain direction, and by Compact Range darkroom, when low-frequency range works, feed mirror image beam is adjusted to tight away from direct irradiation
The direction of contracting field reflecting surface, reduces the interference to dead zone main beam, improves the width phase flatness of dead zone quasi-plane wave, favorably
In improvement antenna or RCS measuring accuracy.
Incident and eye point height governing equation meets following formula in MIRROR SITE,
Wherein xi, yiFor each reflection point coordinates of MIRROR SITE discretization, ziFor exit point to be negated height, hFFor feed highly,
λ is operation wavelength.Formula (1) is spheric wave front phase delay of the feed in ground MIRROR SITE, and the control of reflected point height makes
The phase history of outgoing wave is aligned in z-axis direction.
First, MIRROR SITE can determine initial range according to geometric optics, theoretical further according to Fresnel ellipsoid, calculate preceding 5
~10 ellipsoids and darkroom wall intersecting area；
Secondly, by MIRROR SITE according to ripple unit specification discretization is inhaled, according to the space of system operation wavelength, wherein discretization
Interval is less than half-wavelength, solves formula (1) equation to determine the height z of each reflector elementi；
Again, if system operating frequency change has exceeded ± 5% relative bandwidth, formula (1) is solved again, and ripple list is inhaled in change
The pip height of member so that mirror reflection wave beam is realigned in z-axis direction.
The advantage of the present invention compared with prior art is：
(1) present invention improves the engineering realizability of Compact Range low frequency mirror image beam control, particularly with large-scale or super
Large-scale Compact Range darkroom system, overcomes traditional too high erection feed or deep-cuts the engineering complexity of ground MIRROR SITE.Because
The excessive high feed meaning increase target antenna height of frame, increases the erection difficulty and experiment wind of large-scale or ultra-large type part to be tested
Danger.Because MIRROR SITE deep-cuts 3 times of wavelength to control mirror reflection direction, the difficulty of feed and reflecting surface ground integration is added
Degree, will increase the complexity and manufacturing cost of darkroom system construction.
(2) low frequency mirror image beam of the invention control has broadband reconfigurability, passes through MIRROR SITE internal reflection cell height
Continuous control, realize the wideband operation in low frequency darkroom.
Brief description of the drawings
Fig. 1 is the suction wave reflection battle array control device diagrammatic side view of Compact Range darkroom feed mirror image beam, wherein, 1 is feedback
Source, 2 be mirror image feed, and 3 be that mirror image irradiates wave beam, and 4 is inhale wave reflection battle array, and 5 be dead zone wave beam, and 6 be dead zone, and 7 be mirror reflection
Wave beam, 8 is inhale the mirror reflection wave beam after wave reflection battle array regulation and control, and 9 be absorbing material, and 10 be Compact Range reflecting surface；
Fig. 2 is the suction wave reflection battle array control device diagrammatic top view of Compact Range darkroom feed mirror image beam；
Fig. 3 is suction wave reflection battle array height control and the schematic layout pattern of mirror image beam；
Fig. 4 is the suction wave reflection battle array local unit close-up schematic view of mirror image beam；
Fig. 5 is the suction wave reflection array element and height control schematic diagram of mirror image beam, wherein, 51 is inhale wave angle cone, and 52 are
Heighten pedestal；
Fig. 6 is the plane wave angular spectrum of certain Compact Range free unbounded space Nei；
Fig. 7 is the plane wave angular spectrum of certain Compact Range when having ground return；
Fig. 8 is the plane wave angular spectrum of certain Compact Range after phased reflective array is laid out；
Fig. 9 is the amplitude and phase distribution of certain Compact Range dead zone transversal after phased reflective array is laid out；
Figure 10 is the amplitude and phase distribution of the vertical transversal in certain Compact Range dead zone after phased reflective array is laid out.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the present invention.
A preferred embodiment of the present invention：
The suction wave reflection battle array control device schematic diagram of Compact Range darkroom feed mirror image beam as shown in Figure 1, including feed
1, mirror image feed 2, mirror image irradiation wave beam 3 inhales wave reflection battle array 4, and dead zone wave beam 5, dead zone 6, mirror reflection wave beam 7 inhales wave reflection
Mirror reflection wave beam 8 after battle array regulation and control, absorbing material 9 and Compact Range reflecting surface 10.Reflecting surface size：16.16m × 12.385m,
Focal length 14.4m, empty summit raises 1.026m, reflecting surface or so 10, sawtooth, up and down heel teeth 12, left and right heel teeth length 3.2m,
Heel teeth length 2.4m, feed height 2.0m, the mouth face 18.0m on dead zone edge on reflecting surface up and down.Working frequency 300MHz, instead
The electric size for penetrating face is about 12~16 times of wavelength, and 2~3 times of wavelength of heel teeth length, bore substantially meets the low of jagged edges processing
Frequency limit requirements.The near-field thermal radiation for calculating bore, ground mirror image are analyzed using multilevel fast multipole algorithm and wave reflection battle array is inhaled
Dead zone field distribution after processing.
Along the corresponding reflection line position of height projection it is receiving point under dead zone, with this 2 points works it is assumed that feed is launch point
For the bifocal of ellipsoid, preceding 5 fresnel zones and the intersection on ground are calculated, determines that treating between feed and reflecting surface is inhaled
The ground MIRROR SITE of wave reflection battle array processing is as shown in figure 1, wherein 4 is inhale wave reflection battle array, and wide about 10m is about 12m.
Arrange the layout of absorbing material 45 degree of square of rotation as shown in Figure 3 in MIRROR SITE, darkroom ground symmetry axis and
Square diagonal is overlapped, as shown in Figure 2.The absorbing material battle array of Unit 28 × 28 is arranged in the region, inhales wave angle cone unit base
Specification is 0.3m × 0.3m, as shown in Figure 4.For wideband operation, the signal of cell height adjustment mechanism as shown in figure 5, wherein,
51 is inhale wave angle cone, and 52 be to heighten pedestal.
The Compact Range working frequency of this example specifications is 300MHz, in free space inner plane wave angle spectrum as shown in fig. 6, edge
The positive wave spectrum purity of z-axis, it is ensured that preferable quiet zone performance.When there is desired metallic ground, mirror reflection is formed to anti-
The defocusing irradiation in face is penetrated, causes plane wave angular spectrum cracking the spectral components faced upward occur, the normal wave beam in dead zone is disturbed, such as Fig. 7 institutes
Show.
Ground MIRROR SITE is inhaled into wave reflection battle array each unit as previously described highly to control, regulates and controls mirror image beam outgoing phase alignment
In along ground vertical direction, the plane wave angular spectrum of formation is as shown in Figure 8.The wherein amplitude of dead zone central field transversal and vertical transversal
And phase distribution, as shown in Figure 9, Figure 10, dead zone index have reached the Typical requirements in industry, though vertical transversal dead zone index is slightly
Difference, but it is substantially better than the deflation field system for not arranging that ground MIRROR SITE inhales wave reflection battle array.
What the present invention was not elaborated partly belongs to techniques well known.
Claims (8)
1. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom, it is characterised in that：The device is main
It is made up of Compact Range reflecting surface, feed, microwave dark room and mirror image beam regulator control system, wherein,
Described feed, is a kind of approximate spherical wave radiation source, is carried when far field plane wave is finally formed in dead zone for system
For initial sphere wave source；
Described Compact Range reflecting surface, is precision machined curved surface, and usual central entity part is the paraboloid of revolution or ball
Face, the usual sawtooth in edge or curling processing, are converted to desired wavefront, for driving source to be sent to correct before field wave
Reflection of electromagnetic wave after tighten in small distance required far field plane wave is formed in FX；
Described microwave dark room, is to be constituted using absorbing material and metal shield, metope, day is incided for absorbing or controlling
Canopy, the electromagnetic wave on ground；
Described mirror image beam regulator control system, is a kind of adjustable control system of absorbing material cell height, passes through control area
The height of interior each absorbing material unit adjusts emerging wavefront alignment to certain direction away from dead zone, it is therefore an objective to which inhibition zone is reflected
Interference of the clutter to dead zone, such as feed mirror reflection, and by the continuous control of MIRROR SITE internal reflection cell height, can be achieved low
The wideband operation in frequency darkroom.
2. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：Described Compact Range, in relatively low band operation, by adjusting the height of each absorbing material unit of feed MIRROR SITE,
The control of emerging wavefront phase is realized to regulate and control mirror image beam, away from dead zone to reduce interference.
3. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：Described mirror image beam control system, the height that wave reflection array element is inhaled in adjustment works in broadband to match, and does not limit to
Realized in electric or hand control, be not limited to some particular job frequency range.
4. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：Described mirror image beam control system, suction wave reflection array element is highly laid out can be in the arrowband of relative bandwidth ± 5%
Regulate and control wave beam, working frequency in it is outer when adjustment each unit height, to keep optimal mirror image beam performance of control.
5. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：The border for inhaling wave reflection battle array layout area of described mirror image beam control not with the electric axis where Compact Range main beam
Direction is vertical, irradiation of 45 degree of the rotation with the more Sidelobe of mirror image beam after realizing to reflecting surface, and with peripheral region
It is highly consistent to reduce extra discontinuous caused reflection.
6. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：Described mirror image beam control system is arranged in the darkroom wall border for closing on feed, is not limited to Compact Range dark
Certain indoor specified arrangement structure, including feed are located at ground, side wall or ceiling.
7. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：Described mirror image beam control system coordinates the reflecting surface mouthful face design of corresponding Compact Range, is not limited to reflecting surface
Certain specific boundary form, including sawtooth or curling processing.
8. the suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom as claimed in claim 1, it is special
Levy and be：Described mirror image beam control system coordinates the reflection surface system of corresponding Compact Range, is not limited to reflecting surface number
Or type, including single reflection face, dual or multi reflecting surface.
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| CN201710265719.1A CN107086377B (en) | 2017-04-21 | 2017-04-21 | Wave-absorbing reflective array control device for feed mirror beam in compact field darkroom |
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| CN201710265719.1A CN107086377B (en) | 2017-04-21 | 2017-04-21 | Wave-absorbing reflective array control device for feed mirror beam in compact field darkroom |
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| CN107727946A (en) * | 2017-11-08 | 2018-02-23 | 北京航空航天大学 | Tighten field device in a kind of single reflection face of high cross polarization isolation |
| CN107942330A (en) * | 2017-11-20 | 2018-04-20 | 北京航天长征飞行器研究所 | A kind of radar scattering characteristic extracting method and system based on plasma near-field test |
| CN108009355A (en) * | 2017-12-01 | 2018-05-08 | 南京长峰航天电子科技有限公司 | A kind of darkroom spheric array Compact Range dead zone characteristic spectrum analysis method |
| CN108254729A (en) * | 2018-04-09 | 2018-07-06 | 北京环境特性研究所 | A kind of double fit phase unwrapping methods and double fit phase unwrapping devices |
| CN108879105A (en) * | 2018-06-01 | 2018-11-23 | 北京航空航天大学 | The redundant parallel device and adjusting method that the support of Compact Range split Reflector Panel is adjusted |
| CN110086553A (en) * | 2019-04-21 | 2019-08-02 | 上海无线通信研究中心 | Wave beam for millimeter-wave communication system is aligned test method and its system |
| CN111983574A (en) * | 2020-07-31 | 2020-11-24 | 中国航空工业集团公司济南特种结构研究所 | Method for improving RCS test quiet zone performance |
| CN112034266A (en) * | 2020-05-25 | 2020-12-04 | 北京中测国宇科技有限公司 | Millimeter wave multi-feed source compact range testing system |
| CN112399792A (en) * | 2020-12-07 | 2021-02-23 | 北京航天长征飞行器研究所 | Multi-source electromagnetic wave beam crosstalk inhibition method and device and computer storage medium |
| CN113030597A (en) * | 2019-12-24 | 2021-06-25 | 川升股份有限公司 | Antenna measurement system integrating far field and shrinking distance field |
| CN113140897A (en) * | 2020-01-17 | 2021-07-20 | 华为技术有限公司 | Antenna, antenna module and wireless network equipment |
| US12021303B2 (en) | 2020-01-17 | 2024-06-25 | Huawei Technologies Co., Ltd. | Antenna, antenna module, and wireless network device |
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| CN107727946A (en) * | 2017-11-08 | 2018-02-23 | 北京航空航天大学 | Tighten field device in a kind of single reflection face of high cross polarization isolation |
| CN107942330B (en) * | 2017-11-20 | 2019-08-09 | 北京航天长征飞行器研究所 | A kind of radar scattering characteristic extracting method and system based on plasma near-field test |
| CN107942330A (en) * | 2017-11-20 | 2018-04-20 | 北京航天长征飞行器研究所 | A kind of radar scattering characteristic extracting method and system based on plasma near-field test |
| CN108009355A (en) * | 2017-12-01 | 2018-05-08 | 南京长峰航天电子科技有限公司 | A kind of darkroom spheric array Compact Range dead zone characteristic spectrum analysis method |
| CN108254729A (en) * | 2018-04-09 | 2018-07-06 | 北京环境特性研究所 | A kind of double fit phase unwrapping methods and double fit phase unwrapping devices |
| CN108254729B (en) * | 2018-04-09 | 2020-03-27 | 北京环境特性研究所 | Double-fitting phase unwrapping method and double-fitting phase unwrapping device |
| CN108879105B (en) * | 2018-06-01 | 2020-05-05 | 北京航空航天大学 | Redundant parallel device for support adjustment of compact range splicing reflection panel and adjustment method |
| CN108879105A (en) * | 2018-06-01 | 2018-11-23 | 北京航空航天大学 | The redundant parallel device and adjusting method that the support of Compact Range split Reflector Panel is adjusted |
| CN110086553A (en) * | 2019-04-21 | 2019-08-02 | 上海无线通信研究中心 | Wave beam for millimeter-wave communication system is aligned test method and its system |
| CN113030597A (en) * | 2019-12-24 | 2021-06-25 | 川升股份有限公司 | Antenna measurement system integrating far field and shrinking distance field |
| CN113030597B (en) * | 2019-12-24 | 2024-05-17 | 川升股份有限公司 | Antenna measuring system integrating far field and distance-reducing field |
| CN113140897A (en) * | 2020-01-17 | 2021-07-20 | 华为技术有限公司 | Antenna, antenna module and wireless network equipment |
| CN113140897B (en) * | 2020-01-17 | 2022-09-23 | 华为技术有限公司 | Antenna, antenna module and wireless network equipment |
| US12021303B2 (en) | 2020-01-17 | 2024-06-25 | Huawei Technologies Co., Ltd. | Antenna, antenna module, and wireless network device |
| CN112034266A (en) * | 2020-05-25 | 2020-12-04 | 北京中测国宇科技有限公司 | Millimeter wave multi-feed source compact range testing system |
| CN111983574A (en) * | 2020-07-31 | 2020-11-24 | 中国航空工业集团公司济南特种结构研究所 | Method for improving RCS test quiet zone performance |
| CN111983574B (en) * | 2020-07-31 | 2024-04-09 | 中国航空工业集团公司济南特种结构研究所 | Method for improving performance of RCS test dead zone |
| CN112399792A (en) * | 2020-12-07 | 2021-02-23 | 北京航天长征飞行器研究所 | Multi-source electromagnetic wave beam crosstalk inhibition method and device and computer storage medium |
| CN112399792B (en) * | 2020-12-07 | 2024-02-13 | 北京航天长征飞行器研究所 | Multi-source electromagnetic wave beam crosstalk suppression method and device and computer storage medium |
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