CN103630879A - Corner reflector - Google Patents
Corner reflector Download PDFInfo
- Publication number
- CN103630879A CN103630879A CN201310068679.3A CN201310068679A CN103630879A CN 103630879 A CN103630879 A CN 103630879A CN 201310068679 A CN201310068679 A CN 201310068679A CN 103630879 A CN103630879 A CN 103630879A
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- Prior art keywords
- corner reflector
- support
- swivel nut
- articulated
- fixed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
- G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder
- G01S7/4078—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder involving an integrated reference reflector or reference transponder
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention provides a corner reflector which comprises a triangular supporting pedestal, a corner reflector body, and a pitching adjustment mechanism. The triangular supporting pedestal comprises three supporting foundations, a first support, a second support, a third support and a rotating shaft, wherein either two of the three supporting foundations are fixed via angle iron, the first, second and third supports are respectively fixed on the corresponding supporting foundations, and extend upwards along the horizontal plane, and the two ends of the rotating shaft are respectively pivoted to the upper ends of the first and second supports. The corner reflector body is of a triangular cone structure, the bottom surface of the corner reflector body is fixed on a rotating shaft of the pedestal via a welding clamping block, the two side surfaces of the corner reflector body are arranged symmetrically, and multiple pitching adjustment support lugs in different heights are arranged at a connecting position, at the back of the corner reflector body, of the two side surfaces. One end of the pitching adjustment mechanism is hinged to the third support of the triangular supporting pedestal, and the other end of the pitching adjustment mechanism is hinged to one of the multiple pitching adjustment support lugs at the back of the corner reflector body. In the corner reflector, the pitching adjustment support lugs in different heights are used to realize flexible pitching adjustment of the corner reflector body.
Description
Technical field
The present invention relates to electron trade Radar Technology field, especially a kind of corner reflector.
Background technology
Because synthetic-aperture radar (SAR) satellite has observing capacity round-the-clock, round-the-clock, and there is to certain penetration capacity on earth's surface, it plays an important role at aspects such as disaster monitoring, environmental monitoring, resources survey and Military Application, be subject to the generally attention of various countries, become the focus of earth observation from space development at present.
In order to guarantee that polarization sensitive synthetic aperture radar system has the function of quantitative observation, improve synthetic-aperture radar in the precision of the aspects such as terrain classification, target identification, realize on a large scale, the dynamic monitoring of round-the-clock, round-the-clock, bring into play maximum application benefit, must calibrate by Technologies Against Synthetic Aperture Radar, therefore setting up synthetic-aperture radar scaling system is the condition that realizes radar quantitative remote sensing indispensability.Along with the development of satellite-borne synthetic aperture radar quantitative Application technology, more and more higher to the accuracy requirement of scaling system.Satellite-borne synthetic aperture radar is mainly to rely in suitable calibration place, canonical reference scaler to be set and to provide radar cross section reference value to realize calibration, corner reflector is due to simple in structure, cost is low, is the visual plant of realizing the every calibration test function of satellite-borne synthetic aperture radar.Because corner reflector is as the canonical reference target in scaling system, the precision of its radar cross section and degree of stability have determined the precision of calibration test to a great extent, and therefore setting up high-precision scaling system just need to develop the corner reflector of high precision, high stability.
In order to improve calibration test precision, need to meet larger test signal to noise ratio, for satellite-borne synthetic aperture radar calibration, corner reflector just need to have very large radar cross section, and the physical size of corner reflector will be very large like this.The radar cross section precision of corner reflector is determined by its mechanical tolerance, should guarantee that corner reflector has larger radar cross section, guarantee that again corner reflector has very high radar cross section precision and degree of stability, require corner reflector to there is good field ease of use and the adaptability to environment simultaneously, therefore, the designing technique of corner reflector and processing technology have been proposed to very high request.
Fig. 1 is prior art corner reflector schematic diagram.As shown in Figure 1, this Transportable ground angle reflector comprises isosceles right triangle aluminium alloy plate, stainless steel round turntable, rotating disk height arm control, semicircle clasp and reflection angle adjuster.First stainless steel round turntable is placed in to observation station position, by the adjusting screw of three positions of rotating disk, rotating disk is carried out to leveling; Then three aluminum Reflector Panels are assembled into a rigging-angle cone reflecting body, and are installed on round turntable, between rigging-angle cone reflecting body and round turntable, by two clasps and a point of fixity, connect.Rigging-angle cone reflecting body can arbitrarily rotate by clasp on the one hand on round turntable, on the other hand, and can be by the reflection angle of the reflection angle adjuster accommodation reflex body that is connected with point of fixity, to change reflecting body at the reflection direction of vertical plane.
Yet, in realizing process of the present invention, applicant finds that above-mentioned corner reflector has following defect: due between rigging-angle cone reflecting body and round turntable, by two clasps and a point of fixity, connect, cause its less stable, pitch regulation inconvenience, is difficult to meet measuring accuracy and stability requirement.
Summary of the invention
(1) technical matters that will solve
For solving above-mentioned one or more problems, the invention provides a kind of corner reflector.
(2) technical scheme
According to an aspect of the present invention, provide a kind of corner reflector.This corner reflector comprises: gusseted base, corner reflector and pitching adjusting mechanism.Wherein: gusseted base comprises: three are supported lower margin, fix between any two by angle steel; The first support, the second support and the 3rd support, be individually fixed on corresponding support lower margin, along surface level, extends upward; Rotating shaft, its two ends are articulated in respectively the upper end of the first support and the second support.Corner reflector, is triangle cone structure, and its underrun welding fixture block is fixed on base shaft, and two sides are symmetrical arranged, and the back place of its handing-over sets firmly several pitch regulation journal stirrups that is positioned at differing heights.Pitching adjusting mechanism, its one end is articulated with gusseted base the 3rd support, and the other end is articulated with one of them of several pitch regulation journal stirrups on corner reflector back.
(3) beneficial effect
As can be seen from the above technical solutions, corner reflector of the present invention has following beneficial effect:
(1) it is reasonable that gusseted base makes the centre of gravity place of corner reflector, and by being positioned at the pitch regulation journal stirrup of differing heights, can realize the pitching of corner reflector to flexible adjustment;
(2) at least one supports on lower margin and has adjustable for height support, can realize easily the Level tune function of corner reflector;
(3) pitching adjusting mechanism adopts and splits threaded adjusting bar, can realize easily the pitch regulation function of wide region;
(4) the equipped antenna house of corner reflector actinal surface, can keep out dust storm and rainwater, plays the effect of shielding angle reflecting body;
(5) by using aluminium honeycomb interlayer aluminium sheet structure, greatly alleviated the weight of corner reflector, and can guarantee the Rigidity and strength of reflecting surface, reflecting body actinal surface is made edge sharpening and is processed, and can substantially eliminate the impact of edge effect;
(6) support lower margin middle part through hole is set, can fix by ground pricker, guarantee not to be subject to external force to affect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art synthetic-aperture radar corner reflector;
Fig. 2 is the structural representation of embodiment of the present invention corner reflector;
Fig. 3 is the schematic diagram of antenna house in embodiment of the present invention corner reflector.
[main element symbol description]
1-corner reflector; 2-corner reflector side panel;
3,7-journal stirrup; 4-rotating shaft;
5-swivel nut; 6-sleeve;
8-adjusting handle; 9-the second set nut;
10-screw rod; 11-the 3rd supports lower margin;
12-angle steel; 13-first supports lower margin;
14-the first set nut; 15-setting nut;
16-the second axle sleeve; 17-rotating shaft;
18-corner reflector bottom surface.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
In accompanying drawing or instructions description, similar or identical part is all used identical figure number.And in the accompanying drawings, the shape of embodiment or thickness can expand, and to simplify or convenient sign.Moreover the part of each element will be it should be noted that the element or the implementation that do not illustrate or describe in figure to describe respectively explanation in accompanying drawing, it is form known to a person of ordinary skill in the art in affiliated technical field.In addition, although the demonstration of the parameter that comprises particular value can be provided herein, should be appreciated that, parameter is without definitely equaling corresponding value, but can in acceptable error margin or design constraint, be similar to corresponding value.The ad hoc fashion that specific embodiment is only used for disclosing the present invention, it is not in order to limit the present invention.
In one exemplary embodiment of the present invention, provide a kind of synthetic-aperture radar corner reflector.Fig. 2 is the structural representation of embodiment of the present invention corner reflector.As shown in Figure 2, the present embodiment corner reflector comprises: gusseted base, corner reflector and pitching adjusting mechanism.
As shown in Figure 2, gusseted base comprises: three discs support lower margin (11,13), fixing by angle steel 12 between any two, forms horizontal support face; The first support, the second support and the 3rd support, be individually fixed on corresponding support lower margin, along horizontal support, extends facing up; Rotating shaft 17, its two ends are articulated in respectively the upper end of the first support and the second support.
The structural similarity of the first support and the second support.With the first support, be below that example describes.The first support comprises: the first swivel nut, support lower margin 13 welding with the first disc, and along horizontal support, extend facing up; The second swivel nut 16, its thread rotary orientation is contrary with axle sleeve 13, and one end of described rotating shaft 17 is articulated in the end of this second swivel nut 16; Regulating shaft, its two ends are spirally connected with the first axle sleeve and the second axle sleeve 16 respectively, by regulate this regulating shaft can make the first axle sleeve and the second axle sleeve shrink to centre or extend simultaneously; Setting nut 15, is fixed in the middle part of regulating shaft, for rotating described regulating shaft; The first set nut 14, is bolted in described regulating shaft near a side of the first axle sleeve, for locking the relative position of regulating shaft and the first swivel nut.
When carrying out Level tune, by rotatable handle setting nut 15, setting nut 15 drives regulating shaft to rotate, the second axle sleeve 16 and the first axle sleeve move round about, adjust corner reflector at the height at this angle, by inclinator, level can be adjusted in corner reflector bottom surface, after adjustment, set nut 14 can be screwed to the relative position of regulating shaft and axle sleeve 13, guarantee that corner reflector keeps horizontality.
Based on above-mentioned explanation, although it will be apparent to those skilled in the art that the height of the first support and the second support all can be adjusted in the present embodiment, if both one of them height are for fixing, wherein another height can regulate, and can realize too the object of adjusting level.
In addition, for guaranteeing whole steadily of centre of gravity, at three, support on lower margin and leave three through holes, can squeeze into drill rod, so that corner reflector is fixed on to ground.
In the present embodiment, by stable gusseted base, not only can realize the pitching of corner reflector to flexible adjustment, and centre of gravity place is reasonable, there is no additional reflection, can also fixes by ground pricker, guarantee not to be subject to external force to affect simultaneously.
Pitching adjusting mechanism, its one end is articulated with on the support lower margin of the 3rd support, and its other end is articulated with the journal stirrup (3 or 7) at the corner reflector back side.
Pitching adjusting mechanism adopts is three and can mutually overlaps the sleeve screw version linking up, and comprising: screw rod 10, is articulated with the support lower margin of the 3rd support; Sleeve 6 is articulated with corner reflector back side journal stirrup (3,7) by rotating shaft 4, and its thread rotary orientation is contrary with screw rod 10; Swivel nut 5 two ends, left and right are spirally connected with screw rod 10 and sleeve 6 respectively; Adjusting handle 8, is fixed on swivel nut 5, and the second set nut 9 is bolted on screw rod 10, the relative position for tie down screw 10 with swivel nut 5.
When carrying out pitch regulation, rotation adjusting handle 8, swivel nut 5 in the middle of driving rotates, can make the sleeve 6 of the right and left to centre, shrink simultaneously or extend with screw rod 10, while making the shortest or long status of adjusting lever, can reach effective pitch regulation scope, regulate complete set nut 9 can being tightened to the direction rotation of swivel nut 5, guarantee to adjust the complete angle of pitch and no longer change.
In addition, at the back place of corner reflector two sides handing-over, setting firmly pitch regulation journal stirrup can have and be positioned at a plurality of of differing heights.As shown in Figure 2, this pitch regulation journal stirrup has journal stirrup 3 and journal stirrup 7, by the strong point, replaces, and has both guaranteed setting range, has improved again work efficiency.
Three sheet metals that form corner reflector all adopt aluminium honeycomb interlayer aluminium sheet structure, upper and lower two-layer lead-covering and aluminium honeycomb, consist of, and in the middle of aluminium honeycomb is wrapped in by two-layer lead-covering, two-layer lead-covering periphery adopts angle Support to connect.By using aluminium honeycomb interlayer aluminium sheet structure, make panel periphery form rigid unitary, so greatly alleviated the weight of corner reflector, met again rigidity, intensity and the flatness requirement of reflecting surface.The upper and lower two-layer lead-covering of corner reflector actinal surface is made edge sharpening and is processed, and can substantially eliminate the impact of edge effect.
For whole corner reflector, its surface adopts the treatment process spraying paint after initial oxidation, electrochemicial oxidation is done in lead-covering surface first, during assembling, all parts surface priming paint applies etch primer, zinc chromate primer, then apply synthetic enamel finish paint, by these surface treatments ability of lifting angle reverberator corrosion resistivity effectively.
The outside of above-mentioned three sheet metal seam crossings is coated with fluid sealant, inner side conducting resinl close joint, the continuity of the seam crossing electrical property of assurance Reflector Panel and Reflector Panel.
As shown in Figure 3, the present embodiment corner reflector also comprises: antenna house, and the form fit of its shape and corner reflector opening, and more bigger than corner reflector opening, its periphery is manufactured with large diameter through hole.The through hole that edge setting on triangular pyramidal corner reflector and above-mentioned hole match.Antenna house, is used rope to be connected and fixed antenna house and corner reflector, covers on corner reflector actinal surface.Fig. 3 is the structural representation of antenna house in embodiment of the present invention synthetic-aperture radar corner reflector.Radome material adopts import containing the woven dacron of polytetrafluorethylecoatings coatings.Antenna house is shielding angle reflecting body internal face surface both, improves again its force-bearing situation, and plays sand prevention rainproof function.
These are only the preferred embodiment of the present invention, part parts wherein all can be realized by other means of the prior art, as: corner reflector orientation can adopt the mode of the slip ring of circumference as shown in Fig. 1 to realize to adjusting.
Below the adjustment process of corner reflector of the present invention is described, it describes from another side to its structure:
Step S1, after corner reflector assembling, use aid (such as: digital compass) adjust corner reflector bearing sense, three supports are stamped to drill rod and fix.
Step S2, regulates the adjusting nut 15 on the first support, makes the bottom surface seamed edge maintenance level of corner reflector, and nut 14 is upwards tightened, and prevents from adjusting axle loosening.
Step S3, selects suitable journal stirrup at corner reflector 1 back side, and by rotation adjusting handle 8, adjusts the pitching of corner reflector and point to.
Step S4, after corner reflector is finished using, covers mouth mask by the actinal surface of corner reflector 1, uses rope fixing port face shield.
So far, the present embodiment corner reflector is introduced complete.The explanation of those skilled in the art based on the present embodiment, in conjunction with the professional knowledge of self, can very clearly understand the structure of corner reflector of the present invention.
In sum, corner reflector of the present invention has very high radar cross section precision and degree of stability, and overall weight is light, easy for operation, pitch regulation wide ranges, and orientation, pitching are pointed to easy to adjust, and packed and transported is used simple and fast, and field is adaptable.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a corner reflector, is characterized in that, comprising: gusseted base, corner reflector and pitching adjusting mechanism, wherein:
Gusseted base comprises: three are supported lower margin, fix between any two by angle steel; The first support, the second support and the 3rd support, be individually fixed on corresponding support lower margin, along surface level, extends upward; Rotating shaft, its two ends are articulated in respectively the upper end of described the first support and the second support;
Corner reflector, is triangle cone structure, and its underrun welding fixture block is fixed on base shaft, and two sides are symmetrical arranged, and the back place of its handing-over sets firmly several pitch regulation journal stirrups that is positioned at differing heights;
Pitching adjusting mechanism, its one end is articulated with gusseted base the 3rd support, and the other end is articulated with one of them of the above several pitch regulation journal stirrup of corner reflector back.
2. corner reflector according to claim 1, is characterized in that, at least one in described gusseted base in the first support and the second support is highly adjustable.
3. corner reflector according to claim 2, is characterized in that, described adjustable for height the first support and/or the second support comprise:
The first swivel nut, affixed with corresponding support lower margin;
The second swivel nut, is articulated in one end of described rotating shaft, and its thread rotary orientation is contrary with described the first axle sleeve;
Regulating shaft, its two ends, left and right are spirally connected with described the first axle sleeve and the second axle sleeve respectively, by regulate this regulating shaft can make the first axle sleeve and the second axle sleeve shrink to centre or extend simultaneously.
4. corner reflector according to claim 3, is characterized in that, described adjustable for height the first support and/or the second support also comprise:
Setting nut, is fixed on described regulating shaft, for rotating described regulating shaft;
The first set nut, is fixed on described regulating shaft, for locking the relative position of regulating shaft and the first swivel nut.
5. corner reflector according to claim 1, is characterized in that, described pitching adjusting mechanism comprises:
Screw rod, is articulated with described the 3rd support by rotating shaft;
Sleeve, is articulated with one of them of the above several pitch regulation journal stirrup of corner reflector back, and its thread rotary orientation is contrary with described screw rod;
Swivel nut, its two ends, left and right are spirally connected with described screw rod and sleeve respectively, by regulate this swivel nut can make the screw rod at two ends and sleeve shrink to centre or extend simultaneously.
6. corner reflector according to claim 5, is characterized in that, described pitching adjusting mechanism also comprises:
Adjusting handle, is fixed on swivel nut, for rotating described swivel nut;
The second set nut, is bolted on described swivel nut, for the relative position of tie down screw and swivel nut.
7. corner reflector according to claim 1, is characterized in that, also comprises:
Antenna house, the form fit of its shape and corner reflector opening, and larger than the opening of described corner reflector, for the protection of corner reflector internal reflection surface.
8. according to the corner reflector described in any one in claim 1 to 7, it is characterized in that, described corner reflector is assembled by three sheet metals;
Described three sheet metals are comprised of upper and lower two-layer lead-covering and aluminium honeycomb, and in the middle of aluminium honeycomb is wrapped in by two-layer lead-covering, two-layer lead-covering periphery adopts angle Support to connect.
9. corner reflector according to claim 8, is characterized in that, the upper and lower two-layer lead-covering of corner reflector actinal surface is made edge sharpening and processed, and the outside of described three sheet metal seam crossings is coated with fluid sealant, and inner side seals with conducting resinl;
Electrochemicial oxidation is done on lead-covering surface, described upper strata, and apply etch primer respectively, zinc chromate primer and synthetic enamel finish paint.
10. according to the corner reflector described in any one in claim 1 to 7, it is characterized in that, described support lower margin is disc;
The middle part that described disc supports lower margin has through hole, for squeezing into drill rod, described corner reflector is fixed on to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310068679.3A CN103630879A (en) | 2013-03-05 | 2013-03-05 | Corner reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310068679.3A CN103630879A (en) | 2013-03-05 | 2013-03-05 | Corner reflector |
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| CN103630879A true CN103630879A (en) | 2014-03-12 |
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| CN201310068679.3A Pending CN103630879A (en) | 2013-03-05 | 2013-03-05 | Corner reflector |
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| CN104459630A (en) * | 2014-11-13 | 2015-03-25 | 安徽理工大学 | Portable satellite signal enhancement device |
| CN104483672A (en) * | 2015-01-05 | 2015-04-01 | 山东省地质环境监测总站 | INSAR corner reflector |
| CN104569977A (en) * | 2015-01-04 | 2015-04-29 | 河海大学 | Double-displacement-measurable corner reflector |
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| CN106443603A (en) * | 2016-09-09 | 2017-02-22 | 中国科学院电子学研究所 | Corner reflector with pointing measuring basis, and special pointing measuring equipment thereof |
| CN106443603B (en) * | 2016-09-09 | 2019-12-20 | 中国科学院电子学研究所 | Corner reflector with pointing measurement reference and special pointing measurement equipment |
| CN106443606A (en) * | 2016-11-01 | 2017-02-22 | 首都师范大学 | Ground deformation monitoring and calibrating platform |
| CN107422313A (en) * | 2017-07-19 | 2017-12-01 | 武汉大学 | A kind of High Precision Automatic corner reflector system of normalization operation |
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| CN108414986A (en) * | 2018-06-08 | 2018-08-17 | 陕西同华机电有限公司 | A kind of bracket with foldable formula radar corner reflector |
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| CN110607890A (en) * | 2019-09-25 | 2019-12-24 | 金螳螂精装科技（苏州）有限公司 | Built-in height-adjustable foot cup structure for concrete overhead ground |
| CN111562550A (en) * | 2020-04-15 | 2020-08-21 | 中国科学院电子学研究所 | Passive dihedral angle external calibrator |
| CN111562550B (en) * | 2020-04-15 | 2023-09-29 | 中国科学院电子学研究所 | Passive dihedral angle external scaler |
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| CN112285661B (en) * | 2020-09-27 | 2024-02-06 | 中国科学院空天信息创新研究院 | Four-side combined corner reflector |
| CN112596195A (en) * | 2020-12-14 | 2021-04-02 | 南京航空航天大学 | Double-freedom-degree rotation angle reflector for helicopter target drone |
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| WO2023010678A1 (en) * | 2021-08-02 | 2023-02-09 | 中国资源卫星应用中心 | Trihedral corner reflector and usage method thereof |
| CN113740806B (en) * | 2021-08-02 | 2024-03-22 | 中国资源卫星应用中心 | Three-sided corner reflector and using method thereof |
| CN113640748A (en) * | 2021-08-13 | 2021-11-12 | 西南大学 | Low-operation-maintenance modular corner reflector suitable for complex mountain area |
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