CN113839220A - Electromagnetic wave reflection structure - Google Patents
Electromagnetic wave reflection structure Download PDFInfo
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- CN113839220A CN113839220A CN202010583527.7A CN202010583527A CN113839220A CN 113839220 A CN113839220 A CN 113839220A CN 202010583527 A CN202010583527 A CN 202010583527A CN 113839220 A CN113839220 A CN 113839220A
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- electromagnetic wave
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- cones
- reflection
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- 239000000945 filler Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 3
- 239000002657 fibrous material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000012762 magnetic filler Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 239000011358 absorbing material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
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Classifications
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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
- H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
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- Aerials With Secondary Devices (AREA)
Abstract
The electromagnetic wave reflecting structure provided by the invention comprises an electromagnetic wave reflecting cone, a shell and a non-electromagnetic filler. The electromagnetic wave reflection cone of the electromagnetic wave reflection structure is a pyramid with a smooth outer surface and made of a conductive material. The cone tops of the reflecting cones are outwards densely arranged on the outer surface of the cavity, and the space between the cones is filled with non-electromagnetic materials until the cones are completely covered. When the electromagnetic waves transmitted by the radar irradiate the electromagnetic reflection structure, the electromagnetic waves penetrate through the non-electromagnetic filler to reach the smooth surface of the reflection cone, the smooth cone forms mirror reflection on the electromagnetic waves transmitted by the radar, and because the installation positions and the directions of the reflection cones of the electromagnetic waves are different, a plurality of reflection surfaces of all cones reflect radar waves to different directions, the radar cannot detect a complete target. The non-magnetic filler completely covers all the cones, and can play a role in keeping secret for the structure of the reflecting cone without influencing the reflection performance of the electromagnetic wave reflecting structure.
Description
Technical Field
The invention relates to a radar-proof detection structure in the military field, in particular to an electromagnetic wave reflection structure.
Background
In the military field, the low radar detectability of airplanes, warships, tanks, hangars, missile launching vehicles, and other mobile artillery systems has become an important property of military equipment, directly related to the war viability of such equipment and facilities. The main means of current radar detection is to transmit electromagnetic waves through a radar, reflected waves can be generated when the transmitted electromagnetic waves meet an airplane, a warship, a tank, an hangar, a missile launching vehicle, an automobile and the like with electromagnetic properties, and the shape, the size, the distance and the like of a detection object are judged according to parameters such as the strength of a received reflected wave signal, time difference, phase difference and the like after the radar receives the reflected waves, so that the type and the danger degree of the detection object are judged. Radar has become an important weapon in the military field.
In order to resist the electromagnetic wave detection of radar, people research wave-absorbing materials, and the stealth aircraft is manufactured by coating the wave-absorbing materials on the aircraft, so that the stealth aircraft cannot be stealthed to the long-wave radar due to the fact that the wave-absorbing materials selectively absorb electromagnetic waves with certain wavelengths and the absorption performance of the electromagnetic waves with longer wavelengths is poor; in addition, the wave-absorbing material has harsh requirements and high maintenance cost. The other method is used on a large ship, the ship body is made into a multi-plane structure, each plane is made into a smooth plane, the mirror reflection effect on radar waves is achieved, the directions of the reflected waves are difficult to be reflected to radar antennas, and the radar effect is difficult to detect. However, the arrangement of the components of the warship is often influenced by the large-area planar structure. At present also to the tank of preventing radar survey the tank make the polyhedron shape to the tank appearance, have certain effect to preventing radar survey, nevertheless make the polyhedron shape to the tank and also have the contradiction between structure and the function. The above solutions have disadvantages. The invention provides a new solution, overcomes the defects that the absorption rate of the wave-absorbing material to long-wave electromagnetic waves is low and the stealth effect cannot be achieved, partially overcomes the limitation of the polyhedral structure to the functions of weaponry, and can be used on various military equipment to reduce the radar detectability of the equipment.
Disclosure of Invention
The invention provides an electromagnetic wave reflection structure capable of preventing radar detection in longer wavelength band aiming at the defects of the prior art.
The technical scheme adopted by the invention is as follows: an electromagnetic wave reflection structure comprises an electromagnetic wave reflection cone 1, a shell 2 and a non-electromagnetic filler 3. The electromagnetic wave reflecting cone 1 of the electromagnetic wave reflecting structure is a pyramid with a smooth outer surface and made of a conductive material, and the tops of the reflecting cones face outwards and are densely arranged on the outer surface of the shell 2. The space between the reflecting cones is filled with a non-electromagnetic material 3 until the cones are completely covered.
The electromagnetic wave reflection structure is characterized in that: the electromagnetic wave reflecting cone 1 is a hollow thin-wall cone.
The electromagnetic wave reflecting cone 1 is a regular rectangular pyramid with equal edge length.
The ratio of the cone height of the electromagnetic wave reflecting cone to the diameter of the circumcircle on the bottom surface is more than 2.5.
The non-electromagnetic filler comprises a non-electromagnetic fiber material.
The shell is a hood-shaped shell 4 with a part of surfaces not closed.
The hood-shaped housing can be further simplified to a flat-plate housing 5
Basically, the electromagnetic wave reflecting cone 1 is a regular rectangular pyramid with a smooth outer surface, different metal materials can be selected according to different application conditions, steel and high-strength alloy are selected to maintain high strength, if a light-weight structure is selected, aluminum-titanium alloy can be selected, the cone is made into a thin-wall hollow cone, the light-weight high-strength material is filled in the cavity of the cone, and a high-strength non-electromagnetic fiber reinforced non-electromagnetic composite material is adopted between the cones to enhance the strength of the electromagnetic wave reflecting structure.
Basically, the electromagnetic wave reflection regular rectangular pyramid is made into a pyramid with the ratio of the cone height to the diameter of the circumcircle at the cone bottom larger than 2.5, so that the electromagnetic wave can be reflected inwards, and the reflection proportion to the air is reduced. According to the appearance and the assembly requirement of the reflection structure, the electromagnetic wave reflection cone can be made into a triangular pyramid, a rectangular pyramid or a polygonal pyramid, or even an inclined pyramid with the bottom surface not vertical to the height of the cone.
Compared with the prior art, the invention has substantive characteristics and progress, and particularly, the invention adopts the multi-cone distribution arranged on the outer surface of the equipment, and the conical surfaces of the plurality of cones form a plurality of specular reflection surfaces with different angles, thereby basically eliminating diffuse reflection. The reflecting directions of the mirror surfaces of the conical surfaces to the electromagnetic waves are different, and particularly, the positions and directions of reflected signals are more uncertain in the motion of equipment and a radar, so that the radar cannot detect the signals. According to the size of the equipment and the different wavelengths of electromagnetic waves used by the radar mainly preventing detection, the cone can be made into different cone heights and different proportions of the cone heights and the diameters of the circumcircles on the bottom surface in a targeted manner. The longer the wavelength used by the radar, the higher the height of the required electromagnetic wave reflection cone, and the larger the ratio of the cone height to the bottom surface size. Thus, different electromagnetic wave reflecting cones can be selected according to different equipment and types of radars to be prevented from being detected, so as to achieve better effect. The non-electromagnetic material is filled between the cones, so that a needed external shape can be provided for the equipment, the mechanical strength of the electromagnetic wave reflection structure is increased, the reflection cone structure detected by a square radar of the equipment can be hidden, and the secrecy is facilitated.
Drawings
Fig. 1 and 2 are schematic structural views of an electromagnetic wave reflection structure in embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of an electromagnetic wave reflector-shaped housing in embodiment 2 of the present invention.
Fig. 4 is a schematic structural view of a deck or flat electromagnetic wave reflecting structure in embodiment 3.
Fig. 5 is a schematic view of the structure of a hollow regular rectangular pyramid according to the present invention.
FIG. 6 is a schematic view of a hollow regular triangular pyramid structure of an electromagnetic wave reflecting pyramid according to the present invention
FIG. 7 is a schematic view of a hollow regular polygonal pyramid structure of an electromagnetic wave reflecting cone according to the present invention
In the figure: 1. an electromagnetic wave reflection cone; 2. a housing; 3. a filler of non-electromagnetic material; 4. a hood-shaped housing; 5. a plate-shaped housing.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Example 1
As shown in fig. 1, 2, 5, 6 and 7, an electromagnetic wave reflecting structure includes an electromagnetic wave reflecting cone 1, a housing 2, and a non-electromagnetic filler 3. The shell 2 encloses a closed space, an engine, explosive, fuse, mechanical equipment, control equipment and the like can be placed in the space, the electromagnetic wave reflecting cones 1 are densely and seamlessly installed on the outer surface of the shell 2, the cone tips of the electromagnetic wave reflecting cones face outwards, after the electromagnetic wave reflecting cones are fully distributed on the outer surface of the shell 2, the space between the electromagnetic wave reflecting cones is filled with the non-electromagnetic fillers 3 and exceeds the height of the cones to completely cover the electromagnetic wave reflecting cones, the electromagnetic wave reflecting cones 1 cannot be seen from the appearance, a layer of surface layer of non-electromagnetic materials is added according to needs to form a certain shape, and the non-electromagnetic fillers comprise a large number of non-electromagnetic high-strength fibers and are used for increasing the strength of the whole electromagnetic wave reflecting structure.
In order to reduce the weight of the whole electromagnetic wave reflection structure, the electromagnetic wave reflection cone 1 is made into a hollow thin-wall cone; the electromagnetic wave reflecting cones arranged on the outer side of the shell 2 mainly use regular rectangular pyramids with equal edge lengths, when the geometric dimension cannot meet the requirement of full coverage of the outer surface of the whole shell when the rectangular pyramids are used, the triangular pyramids or the polygonal pyramids are filled to be distributed on the whole outer surface, and an electromagnetic wave reflecting structure with the triangular pyramids as the main part or other polygonal pyramids as the main part can be selected according to the shape and the dimension of equipment. In order to increase the inward reflection of the electromagnetic wave, the ratio of the height of the cone of the electromagnetic wave reflection cone to the diameter of the circumcircle of the bottom surface is more than 2.5, namely the cone is made to be sharper.
In order to effectively reflect electromagnetic waves with shorter wavelengths, the outer surface of the cone of the electromagnetic wave reflection cone 1 is made smooth. The electromagnetic wave reflecting cone can be made higher in order to prevent the detection of longer wave wavelength radar on large equipment. Different metal materials can be selected according to different application conditions, steel and high-strength alloy are selected to maintain high strength, if the weight is reduced, the aluminum-titanium alloy can be selected, the cone is made into a thin-wall hollow structure, and the light material is filled in the cavity of the cone.
The electromagnetic wave reflecting structure can be used as the skin of missiles and airplanes.
Example 2
As shown in fig. 3, 5, 6 and 7, an electromagnetic wave reflecting structure is composed of an electromagnetic wave reflecting cone 1, a cover-shaped shell 5 and a non-electromagnetic filler 3, wherein the cover-shaped electromagnetic wave reflecting structure is partially and incompletely sealed. The electromagnetic wave reflecting cones 1 are densely and seamlessly installed on the outer surface of the cover-shaped shell 5, the cone tips of the electromagnetic wave reflecting cones face outwards, after the electromagnetic wave reflecting cones are fully distributed on the outer surface of the cover-shaped shell, the space between the electromagnetic wave reflecting cones is filled with the non-electromagnetic filler 3 and exceeds the height of the cones, the electromagnetic wave reflecting cones are completely covered, the electromagnetic wave reflecting cones 1 cannot be seen from the appearance, and a layer of non-electromagnetic material surface layer is added as required to form a certain shape. The non-electromagnetic filler 3 includes non-electromagnetic high-strength fibers therein for increasing the strength of the entire electromagnetic wave reflecting structure.
In order to reduce the weight of the whole cover-shaped electromagnetic wave reflecting structure, the electromagnetic wave reflecting cone 1 is made into a hollow thin-wall cone. The electromagnetic wave reflecting cones arranged on the outer sides of the cover-shaped electromagnetic wave reflecting structures mainly use regular rectangular pyramids with equal edge lengths, and only when the geometric dimensions cannot meet the requirement that the outer surface of the whole cover-shaped shell is fully distributed, the triangular pyramids or the polygonal pyramids are used. In order to increase the inward reflection of the electromagnetic wave, the ratio of the cone height of the electromagnetic wave reflection cone to the diameter of the circumcircle of the bottom surface is more than 2.5, namely the cone is made to be more sharp.
In order to effectively reflect the electromagnetic wave with shorter wavelength, the outer surface of the cone of the electromagnetic wave reflection cone is made into a smooth outer surface. Different metal materials can be selected according to different application conditions, steel and high-strength alloy are selected to maintain high strength, if the weight is reduced, the aluminum-titanium alloy can be selected, the cone is made into a thin-wall hollow structure, and the light material is filled in the cavity of the cone.
The cover-shaped electromagnetic wave reflecting structure can be used as the top of an airport terminal, and can also be placed on tanks, missile launching vehicles, warships, artillery, military vehicles and bulletproof cars to prevent the detection and tracking of radar.
Example 3
As shown in fig. 4, 5, 6 and 7, an electromagnetic wave reflection structure is a flat electromagnetic wave reflection structure composed of an electromagnetic wave reflection cone 1, a flat plate 5 and a non-electromagnetic filler 3. The electromagnetic wave reflecting cones 1 are densely and seamlessly installed on the surface of the outward side of the flat plate, the cone tips of the electromagnetic wave reflecting cones face the electromagnetic wave incoming direction, the flat plate is fully installed with the electromagnetic wave reflecting cones, after the installation of the electromagnetic wave reflecting cones is finished, the space between the electromagnetic wave reflecting cones is filled with the non-electromagnetic filler 3 and exceeds the height of the cones to completely cover the electromagnetic wave reflecting cones 1, the electromagnetic wave reflecting cones 1 cannot be seen from the appearance, and a layer of non-electromagnetic material surface layer is added as required to form the plane shape of the appearance. The non-electromagnetic filler comprises non-electromagnetic high-strength fibers and is used for increasing the strength of the whole electromagnetic wave reflection structure.
If the composite material is used on a naval vessel, the composite material consisting of high-strength cement and non-electromagnetic high-strength fibers can be used as the non-electromagnetic filler.
In order to reduce the weight of the whole flat electromagnetic wave reflecting structure, the electromagnetic wave reflecting cone 1 is made into a hollow thin-wall cone. The electromagnetic wave reflecting cone used on the flat electromagnetic wave reflecting structure mainly uses a regular rectangular pyramid with equal edge length, and only when the geometric dimension can not satisfy the condition that the whole flat surface is fully distributed, the triangular pyramid or the polygonal pyramid is used. In order to increase the inward reflection of the electromagnetic wave, the ratio of the cone height of the electromagnetic wave reflection cone to the diameter of the circumcircle of the bottom surface is more than 2.5, namely the cone is made to be more sharp.
In order to effectively reflect the electromagnetic wave with shorter wavelength, the outer surface of the electromagnetic wave reflection cone is made into a smooth outer surface. According to different application conditions, different metal materials can be selected to manufacture the electromagnetic wave reflecting cones, steel and high-strength alloy are selected to maintain high strength, high-strength non-electromagnetic fillers are filled between the electromagnetic reflecting cones, if the weight is reduced, light alloys such as aluminum-titanium alloy can be selected, the cones are made into thin-wall hollow structures, and light materials are filled in the cavities of the cones.
The flat electromagnetic wave reflecting structure can be used as a radar-proof detection structure for a naval vessel deck, a naval vessel body, buildings on the deck, the upper part and the side part of a tank, a missile launching vehicle, a roof of an important building and the like.
Compared with the prior art, the electromagnetic wave reflecting device has substantive characteristics and progress, and particularly, the electromagnetic wave reflecting device adopts the multi-conical-surface distribution arrangement on the outer surface of the device to form a plurality of specular reflecting surfaces of electromagnetic waves with different angles, so that the diffuse reflection is basically eliminated. The reflecting directions of the mirror surfaces of the conical surfaces to the electromagnetic waves are different, and particularly, the positions and directions of reflected signals are more uncertain in the motion of equipment and a radar, so that the radar cannot detect the signals. The electromagnetic wave reflecting cones with different sizes and shapes can be selected for detection by radars with different wavelengths, so that a better effect is achieved. The non-electromagnetic material filled between the cones can provide a required external shape for the equipment, enhance the mechanical strength of the electromagnetic wave reflecting structure, and can hide the reflecting structure of the reflecting cone, thereby being convenient for confidentiality.
The invention can be used for producing new radar-proof detection equipment and can also be used for carrying out radar-proof detection reconstruction on the existing military equipment facilities.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. An electromagnetic wave reflection structure characterized in that: the electromagnetic wave reflection cone comprises an electromagnetic wave reflection cone (1), a shell (2) and a non-electromagnetic filler (3). The electromagnetic wave reflecting cone (1) of the electromagnetic wave reflecting structure is a pyramid which is made of a conductive material and has a smooth outer surface, and the tops of the reflecting cones are outwards densely arranged on the outer surface of the shell (2). The spaces between the reflecting cones are filled with a non-electromagnetic material (3) until the cones are completely covered.
2. The electromagnetic wave reflection structure according to claim 1, characterized in that: the electromagnetic wave reflecting cone (1) is a hollow thin-wall cone.
3. The electromagnetic wave reflection cone (1) according to claim 2, characterized in that: the electromagnetic wave reflecting cone (1) is a regular rectangular pyramid with equal edge length.
4. The electromagnetic wave regular quadrangular reflection cone according to claim 3, wherein: the ratio of the height of the electromagnetic wave regular quadrangular reflection cone to the diameter of the circumcircle of the bottom surface is more than 2.5.
5. The electromagnetic wave reflection structure according to claim 1, characterized in that: the non-electromagnetic filler (3) comprises a non-electromagnetic fiber material.
6. The electromagnetic wave reflection structure according to claim 1, characterized in that: the shell is a hood-shaped shell (4) with a part of side surfaces not closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583527.7A CN113839220A (en) | 2020-06-24 | 2020-06-24 | Electromagnetic wave reflection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583527.7A CN113839220A (en) | 2020-06-24 | 2020-06-24 | Electromagnetic wave reflection structure |
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| CN113839220A true CN113839220A (en) | 2021-12-24 |
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| CN202010583527.7A Pending CN113839220A (en) | 2020-06-24 | 2020-06-24 | Electromagnetic wave reflection structure |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661680A (en) * | 2004-02-27 | 2005-08-31 | 日立环球储存科技荷兰有限公司 | Self-aligned, notched trailing shield for perpendicular recording |
| CN101769058A (en) * | 2010-02-12 | 2010-07-07 | 泰州拓谷超细粉体材料有限公司 | Multilayer microwave unreflected chamber absorbing material filled by loose foam blocks |
| TW201122529A (en) * | 2009-12-17 | 2011-07-01 | Chung Shan Inst Of Science | Large view angle corner reflector |
| CN102236117A (en) * | 2011-04-28 | 2011-11-09 | 成都比特王科技有限责任公司 | Rectangular pyramid structure capable of reversely reflecting at 180 degrees or deflecting at specified angle |
| CN202258383U (en) * | 2011-02-24 | 2012-05-30 | 南京南大波平电子信息有限公司 | Polyurethane foam pyramid absorbing material |
| US20150092417A1 (en) * | 2013-09-29 | 2015-04-02 | Manuel Hoog | Tubular luminaire |
| CN104901018A (en) * | 2015-06-10 | 2015-09-09 | 张继斌 | Panel with anti-radar detection function |
| CN209845637U (en) * | 2019-03-26 | 2019-12-24 | 福建星宏新材料科技有限公司 | Wave-absorbing structure |
| CN111180889A (en) * | 2019-04-08 | 2020-05-19 | 郭长来 | Device for reducing antenna interference by radio electromagnetic wave |
-
2020
- 2020-06-24 CN CN202010583527.7A patent/CN113839220A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661680A (en) * | 2004-02-27 | 2005-08-31 | 日立环球储存科技荷兰有限公司 | Self-aligned, notched trailing shield for perpendicular recording |
| TW201122529A (en) * | 2009-12-17 | 2011-07-01 | Chung Shan Inst Of Science | Large view angle corner reflector |
| CN101769058A (en) * | 2010-02-12 | 2010-07-07 | 泰州拓谷超细粉体材料有限公司 | Multilayer microwave unreflected chamber absorbing material filled by loose foam blocks |
| CN202258383U (en) * | 2011-02-24 | 2012-05-30 | 南京南大波平电子信息有限公司 | Polyurethane foam pyramid absorbing material |
| CN102236117A (en) * | 2011-04-28 | 2011-11-09 | 成都比特王科技有限责任公司 | Rectangular pyramid structure capable of reversely reflecting at 180 degrees or deflecting at specified angle |
| US20150092417A1 (en) * | 2013-09-29 | 2015-04-02 | Manuel Hoog | Tubular luminaire |
| CN104901018A (en) * | 2015-06-10 | 2015-09-09 | 张继斌 | Panel with anti-radar detection function |
| CN209845637U (en) * | 2019-03-26 | 2019-12-24 | 福建星宏新材料科技有限公司 | Wave-absorbing structure |
| CN111180889A (en) * | 2019-04-08 | 2020-05-19 | 郭长来 | Device for reducing antenna interference by radio electromagnetic wave |
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Application publication date: 20211224 |
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