CN108919230B - Combined radar echo enhancer structure - Google Patents
Combined radar echo enhancer structure Download PDFInfo
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- CN108919230B CN108919230B CN201811206137.7A CN201811206137A CN108919230B CN 108919230 B CN108919230 B CN 108919230B CN 201811206137 A CN201811206137 A CN 201811206137A CN 108919230 B CN108919230 B CN 108919230B
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- lens
- sleeve
- radar echo
- lens fixing
- enhancer
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- 239000003623 enhancer Substances 0.000 title claims abstract description 40
- 238000005187 foaming Methods 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 230000002787 reinforcement Effects 0.000 claims description 22
- 239000007769 metal material Substances 0.000 claims description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000747 poly(lactic acid) Polymers 0.000 description 4
- 239000004626 polylactic acid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 241000238565 lobster Species 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- 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)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention relates to a combined radar echo enhancer structure, which comprises a radar echo enhancer body and a pre-fixed framework; the radar echo enhancer body comprises a cover body for maintaining overall strength and aerodynamic shape, a Roebel lens for realizing RCS coverage of different angles and strengths, and a foaming filling piece for filling the inner space of the cover body through foaming; the pre-fixed framework is embedded in the cover body, and the Roxburgh lens is clamped in the pre-fixed framework. According to the combined radar echo enhancer structure, the pre-fixing framework which does not affect the RCS is additionally arranged in the radar echo enhancer cover body, after the plurality of luneberg lenses are pre-fixed according to a certain position and angle, the inside of the cover body is foamed and filled into a whole, and the problem that the conventional radar echo enhancer cannot meet the requirements of targets with large coverage angles and different RCS intensities in different directions and the problem of refitting the RCS of the target projectile are solved.
Description
Technical Field
The invention relates to the technical field of RCS (radar cross section) test transformation of a target aircraft and a target projectile, in particular to a combined radar echo enhancer structure.
Background
In model test tasks, RCS modification is usually required to be carried out on a target aircraft, a target projectile and the like so as to meet the requirements of different model tasks, and the radar echo enhancer is additionally arranged on the wing tips, so that the method is a common modification scheme.
The common radar echo enhancer is formed by fixing a Robert lens with proper specification in a cover body conforming to the aerodynamic shape according to the designed position and direction by using foaming materials. In the refitting process, the RCS coverage is often large, even the refitting requirements of different RCS levels are required for different angles, at the moment, if the number of radar echo enhancers is increased on a target aircraft and a target projectile at one time, the influence among the echo enhancers can be easily caused, and meanwhile, the pneumatic shapes of the target aircraft and the target projectile are changed too much, so that the task requirements cannot be met.
It is therefore desirable to provide a new type of combined radar echo enhancer that contains multiple luneberg lenses simultaneously. In view of this, the present application is specifically proposed.
Disclosure of Invention
A technical problem to be solved
The invention aims to provide a combined radar echo enhancer structure, which solves the problem that the conventional radar echo enhancer cannot meet the requirements of target aircraft and target projectile RCS refitting with large coverage angles and different RCS intensities in different directions.
Two technical schemes
In order to solve the technical problems, the invention provides the following technical scheme:
1. a combined radar echo enhancer structure, which comprises a radar echo enhancer body 1 and a pre-fixed framework 2;
the radar echo enhancer body 1 comprises a cover body 11 for maintaining overall strength and aerodynamic shape, a Roebel lens 12 for realizing RCS coverage of different angles and strengths, and a foaming filler 13 for filling the inner space of the cover body 11 by foaming;
the pre-fixed framework 2 is embedded in the cover 11, and the luneberg lens 12 is clamped in the pre-fixed framework 2;
the pre-fixing framework 2 comprises a lens fixing framework 21, an upper clamping sleeve 22, a lower clamping sleeve 23 and a reinforcing sleeve, wherein the upper clamping sleeve 22 and the lower clamping sleeve 23 are respectively fixedly connected with the upper end and the lower end of the lens fixing framework 21, the upper clamping sleeve 22 is clamped into the front end area of the cover body 11, and the lower clamping sleeve 23 is clamped into the rear end area of the cover body 11;
the lens fixing frame 21 is divided into a first lens fixing region at an upper portion, a third lens fixing region at a lower portion, and a second lens fixing region between the first lens fixing region and the third lens fixing region;
the reinforcing sleeve is used for keeping the rigidity of the lens fixing framework 21 and comprises a closed reinforcing sleeve 24 and a non-closed reinforcing sleeve 25, wherein the closed reinforcing sleeve 24 is fixedly connected with the first lens fixing area, and the non-closed reinforcing sleeve 25 is fixedly connected with the second lens fixing area and the third lens fixing area.
2. According to the combined radar echo enhancer structure of the technical scheme 1, the pre-fixed framework 2 is formed by adopting nonmetal material 3D printing.
3. According to the combined radar echo enhancer structure of claim 2, the nonmetallic material is ABS (ABS, acrylonitrile butadiene styrene, a common resin material) or PLA (PLA, polylactic acid).
4. According to the combined radar echo intensifier structure of claim 1, the second and third lens fixing areas are provided with openings as the lens putting openings 26, and the design of the openings can avoid shielding the RCS facing the lens.
5. The combined radar return booster structure according to claim 1, the closed reinforcement sleeve 24 and the non-closed reinforcement sleeve 25 having the same width.
6. The combined radar return booster structure according to claim 5, the width of said closed reinforcement sleeve 24 and said non-closed reinforcement sleeve 25 is not more than one third of the maximum diameter of the luneberg lens 12.
7. The combined radar return booster structure according to claim 1, the closed reinforcement sleeve 24 and the non-closed reinforcement sleeve 25 having different widths.
8. According to the combined radar echo enhancer structure of claim 1, the opening orientations of the two non-closed reinforcing sleeves 25 in the second lens fixing area and the third lens fixing area may be the same or different, as long as the same orientation as that of the area lens is ensured. Thus, the opening of the non-blocking reinforcement sleeve 25 at the second lens-fixing region is oriented in agreement with the orientation of the Robert lens 12 at the second lens-fixing region; and
the opening of the non-blocking reinforcement sleeve 25 in the third lens holding area is oriented in line with the orientation of the lobster lens 12 in the third lens holding area.
9. According to the combined radar echo enhancer structure of claim 1, the length of the opening of the non-closed reinforcement sleeve 25 is no more than one fourth of the length of the non-closed reinforcement sleeve 25 itself.
10. According to the combined radar echo enhancer structure of claim 1, the cover 11 has a streamlined columnar structure.
Three beneficial effects
The technical scheme of the invention has the following advantages:
according to the combined radar echo enhancer structure, the pre-fixing framework which does not affect RCS is additionally arranged in the radar echo enhancer cover body, after the plurality of luneberg lenses are pre-fixed according to a certain position and angle, the inside of the cover body is foamed and filled into a whole, so that the problem that the conventional radar echo enhancer cannot meet the requirement of target plane and target projectile RCS refitting with large coverage angles and different RCS intensities in different directions is solved.
The radar echo enhancer is simple in structure, convenient to manufacture and install and has excellent application value.
Drawings
FIG. 1 is a top view of a combined radar echo enhancer structure provided by the present invention;
FIG. 2 is a schematic perspective view of a pre-fixed skeleton;
fig. 3 is a schematic view of a primary lobed lens mounted on a pre-fixed skeleton, with the cone representing the lens orientation.
In the figure: 1: a radar echo enhancer body; 11: a cover body; 12: a luneberg lens; 13: foaming filler;
2: pre-fixing a framework; 21: a lens fixing frame; 22: an upper cutting sleeve; 23: a lower cutting sleeve; 24: closing the reinforcement sleeve; 25: a non-closed reinforcing sleeve; 26: a lens delivery port.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides a combined radar echo enhancer structure, which comprises a radar echo enhancer body 1 and a pre-fixed framework 2, as shown in figures 1, 2 and 3;
the radar echo enhancer body 1 comprises a cover body 11 for maintaining overall strength and aerodynamic shape, wherein the cover body 11 can be of a streamline columnar structure, a Roebel lens 12 for realizing RCS coverage of different angles and strengths, and a foaming filling piece 13 for filling the inner space of the cover body 11 through foaming, and the foaming filling piece 13 finally solidifies the radar echo enhancer into a whole;
the pre-fixed framework 2 is embedded in the cover body 11, and the Roxburgh lens 12 is clamped in the pre-fixed framework 2, so that the Robert lens 12 is positioned and fixed;
the pre-fixing framework 2 comprises a lens fixing framework 21, an upper clamping sleeve 22, a lower clamping sleeve 23 and a reinforcing sleeve, wherein the upper clamping sleeve 22 and the lower clamping sleeve 23 are respectively fixedly connected with the upper end and the lower end of the lens fixing framework 21, the upper clamping sleeve 22 is clamped into the front end area of the cover body 11, and the lower clamping sleeve 23 is clamped into the rear end area of the cover body 11, so that the pre-fixing framework 2 and the cover body 11 are positioned;
the lens fixing frame 21 is divided into a first lens fixing region at an upper portion, a third lens fixing region at a lower portion, and a second lens fixing region between the first lens fixing region and the third lens fixing region;
the reinforcing sleeve is used for keeping the rigidity of the lens fixing framework 21 and comprises a closed reinforcing sleeve 24 and a non-closed reinforcing sleeve 25, the closed reinforcing sleeve 24 is fixedly connected to the first lens fixing area, the non-closed reinforcing sleeve 25 is fixedly connected to the second lens fixing area and the third lens fixing area, and shielding of the lens direction is avoided.
The pre-fixed framework 2 can be formed by 3D printing of a non-metal material, and the non-metal material can be ABS or PLA, so that the influence on RCS is small.
The second and third lens holding areas may be provided with openings as lens delivery openings 26, which notch design both facilitates loading of the luneberg lens 12 and avoids shielding of the RCS towards which the lens is directed.
The closed reinforcing sleeve 24 and the non-closed reinforcing sleeve 25 may have the same width or may have different widths. The width of the closed reinforcing sleeve 24 and the non-closed reinforcing sleeve 25 preferably does not exceed one third of the maximum diameter of the primary lobed lens 12.
The opening of the non-closed reinforcing sleeve 25 located in the second lens fixing region is oriented in accordance with the orientation of the Robert lens 12 located in the second lens fixing region; the non-closed reinforcement sleeve 25 positioned in the third lens fixing area is consistent with the direction of the Robert lens 12 positioned in the third lens fixing area; the length of the opening of the non-closed reinforcing sleeve 25 is not more than one fourth of the length of the non-closed reinforcing sleeve 25, and the design can better avoid shielding the lens direction.
When the target aircraft or the target projectile is subjected to RCS refitting, corresponding Longber lenses and combination modes are determined according to requirements, then corresponding pre-fixed frameworks are designed, and the Longber lenses are arranged in the cover body to manufacture corresponding radar echo enhancers, so that the refitting scheme is realized. The radar echo enhancer is convenient to manufacture and install, and has excellent application value.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The combined radar echo enhancer structure is characterized by comprising a radar echo enhancer body (1) and a pre-fixed framework (2);
the radar echo enhancer body (1) comprises a cover body (11) for maintaining overall strength and aerodynamic shape, a plurality of luneberg lenses (12) for realizing RCS coverage of different angles and strengths, and a foaming filling piece (13) for filling the inner space of the cover body (11) through foaming;
the pre-fixed framework (2) is embedded in the cover body (11), and the plurality of luneberg lenses (12) are clamped in the pre-fixed framework (2);
the pre-fixing framework (2) comprises a lens fixing framework (21), an upper clamping sleeve (22), a lower clamping sleeve (23) and a reinforcing sleeve, wherein the upper clamping sleeve (22) and the lower clamping sleeve (23) are fixedly connected with the upper end and the lower end of the lens fixing framework (21) respectively, the upper clamping sleeve (22) is clamped into the front end area of the cover body (11), and the lower clamping sleeve (23) is clamped into the rear end area of the cover body (11);
the lens fixing frame (21) is divided into a first lens fixing area at the upper part, a third lens fixing area at the lower part and a second lens fixing area between the first lens fixing area and the third lens fixing area;
the reinforcing sleeve is used for keeping the rigidity of the lens fixing framework (21), and comprises a closed reinforcing sleeve (24) and a non-closed reinforcing sleeve (25), wherein the closed reinforcing sleeve (24) is fixedly connected to the first lens fixing area, and the non-closed reinforcing sleeve (25) is fixedly connected to the second lens fixing area and the third lens fixing area.
2. The combined radar return booster structure according to claim 1, characterized in that the pre-fixed skeleton (2) is 3D printed from a non-metallic material.
3. The combination radar return booster structure of claim 2 wherein said non-metallic material is ABS or PLA.
4. The combination radar return booster structure of claim 1 wherein the second and third lens holding areas are provided with openings as lens delivery openings (26).
5. The combined radar return booster structure according to claim 1, characterized in that the closed reinforcement sleeve (24) and the non-closed reinforcement sleeve (25) have the same width.
6. The combination radar echo booster structure of claim 5, wherein the width of the closed reinforcement sleeve (24) and the non-closed reinforcement sleeve (25) is no more than one third of the maximum diameter of the luneberg lens (12).
7. The combination radar echo booster structure according to claim 1, wherein the closed reinforcement sleeve (24) and the non-closed reinforcement sleeve (25) have different widths.
8. The combined radar return booster structure according to claim 1, characterized in that the opening of the non-closed reinforcement sleeve (25) at the second lens fixation area is oriented in line with the orientation of the longprimary lens (12) at the second lens fixation area; and
the opening of the non-closed reinforcement sleeve (25) in the third lens fixing area is oriented in accordance with the orientation of the Robert lens (12) in the third lens fixing area.
9. The combined radar echo enhancer structure according to claim 1, characterized in that the opening of the non-closed reinforcement sleeve (25) has a length not exceeding a quarter of the length of the non-closed reinforcement sleeve (25) itself.
10. The combination radar return booster structure according to claim 1, wherein the cover (11) is a streamlined columnar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206137.7A CN108919230B (en) | 2018-10-17 | 2018-10-17 | Combined radar echo enhancer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206137.7A CN108919230B (en) | 2018-10-17 | 2018-10-17 | Combined radar echo enhancer structure |
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| Publication Number | Publication Date |
|---|---|
| CN108919230A CN108919230A (en) | 2018-11-30 |
| CN108919230B true CN108919230B (en) | 2023-05-26 |
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| CN201811206137.7A Active CN108919230B (en) | 2018-10-17 | 2018-10-17 | Combined radar echo enhancer structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208474A (en) * | 2020-03-02 | 2020-05-29 | 上海神添实业有限公司 | Passive radar target intensifier |
| CN113552548B (en) * | 2021-07-28 | 2023-09-29 | 北京环境特性研究所 | Radar echo passive simulation device |
| CN115303495B (en) * | 2022-09-03 | 2023-06-16 | 北京金朋达航空科技有限公司 | RCS adjusting device for aircraft |
| CN115728728A (en) * | 2022-10-27 | 2023-03-03 | 北京环境特性研究所 | A kind of support foam support for RCS test target and its design method |
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