CN108646222B - Radar scattering cross section visible angle domain corner reflector - Google Patents
Radar scattering cross section visible angle domain corner reflector Download PDFInfo
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- CN108646222B CN108646222B CN201810372844.7A CN201810372844A CN108646222B CN 108646222 B CN108646222 B CN 108646222B CN 201810372844 A CN201810372844 A CN 201810372844A CN 108646222 B CN108646222 B CN 108646222B
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- 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
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Abstract
The invention relates to a radar scattering cross section visible angle domain corner reflector, comprising: the radar scattering cross section visible angle range adjusting device comprises a first side vertical plate, a second side vertical plate, a bottom plate, a first radar scattering cross section RCS visible angle range adjuster and a second RCS visible angle range adjuster; the right-angle edge of the first side vertical plate, the right-angle edge of the second side vertical plate and the right-angle edge of the bottom plate are perpendicular to each other and collinear with each other, wherein the lengths of the collinear right-angle edges are equal; the first RCS visible angle range regulator is connected with the first side vertical plate and the bottom plate; the second RCS visible angle range adjuster is connected to the second side riser and the base plate. The scheme can provide the radar scattering cross section visible angle domain corner reflector with high application flexibility.
Description
Technical Field
The invention relates to the technical field of radars, in particular to a radar scattering cross section visible angle domain corner reflector.
Background
The corner reflector is a passive reflector and has extremely strong echo reflection characteristics. The Radar Cross Section (RCS) has a strong RCS within a wide angle range, so that the Radar Cross Section is used as an RCS intensifier, a calibration body or a target body, and is widely applied to the fields of maritime search and rescue, indoor and outdoor target characteristic test, target targets and the like.
At present, in the process of target design, it is found that there are many narrow visible angle regions of the simulated target in the RCS spatial distribution, and this characteristic is not negligible if the target is to be simulated realistically. In addition, the scattering characteristics of the conventional corner reflector change slowly, and a narrow visible angle region RCS cannot be simulated in the application process, so that the flexibility of the corner reflector application is poor.
Therefore, in view of the above disadvantages, it is desirable to provide a radar cross section visible angle range corner reflector with high application flexibility.
Disclosure of Invention
The technical problem to be solved by the invention is that the scattering characteristic of the traditional corner reflector changes slowly, and a narrow visible angle domain RCS cannot be simulated in the application process, so that the corner reflector has poor application flexibility.
In a first aspect, an embodiment of the present invention provides a radar scattering cross-section visible angle range corner reflector, including: the radar scattering cross section visible angle range adjusting device comprises a first side vertical plate, a second side vertical plate, a bottom plate, a first radar scattering cross section RCS visible angle range adjuster and a second RCS visible angle range adjuster;
the right-angle edge of the first side vertical plate, the right-angle edge of the second side vertical plate and the right-angle edge of the bottom plate are perpendicular to each other and collinear with each other, wherein the lengths of the collinear right-angle edges are equal;
the first RCS visible angle range regulator is connected with the first side vertical plate and the bottom plate;
the second RCS visible angle range adjuster is connected to the second side riser and the base plate.
Preferably, the ratio of the length of the first RCS visible angle region adjuster to the collinear right-angle sides of two collinear pairs to the length of the side of the collinear right-angle sides of two collinear pairs is a predetermined dielectric slab size ratio factor, wherein the length of the first RCS visible angle region adjuster to the collinear right-angle sides of two collinear pairs is equal to the length of the collinear right-angle sides of two collinear pairs to the second RCS visible angle region adjuster.
Preferably, the dielectric plate dimension ratio factor and the RCS visible angle domain width satisfy the following formula:
y＝ax3+bx2+cx+d
wherein y represents the width of the RCS visible angle region, x represents the size ratio factor of the dielectric plate, a represents a predetermined first adjusting factor, b represents a predetermined second adjusting factor, c represents a predetermined third adjusting factor, and d represents a predetermined fourth adjusting factor.
Preferably, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate include: a square or isosceles right triangle;
when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the value of the first adjusting factor is-48, the value of the second adjusting factor is 61, the value of the third adjusting factor is-61, and the value of the fourth adjusting factor is 48;
when the first side vertical plate, the second side vertical plate and the bottom plate are all square, the value of the first adjusting factor is 4, the value of the second adjusting factor is-3, the value of the third adjusting factor is-26, and the value of the fourth adjusting factor is 25.
Preferably, when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the first RCS visible angle region adjuster and the second RCS visible angle region adjuster are in the shape of a triangular pyramid;
when the first side plate, the second side plate and the bottom plate are all square in shape, the first RCS visible angle range adjuster and the second RCS visible angle range adjuster are triangular prism-shaped.
Preferably, the value range of the dielectric plate size ratio factor is (0, 1).
Preferably, the first side vertical plate, the second side vertical plate, the bottom plate, the first RCS visible angle range adjuster, and the second RCS visible angle range adjuster are all made of metal.
Preferably, the thickness ranges of the first side vertical plate, the second side vertical plate and the bottom plate are [3mm, 7mm ].
Preferably, the side length of each two collinear right-angle sides and the RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate satisfy the following formula:
wherein l represents the side length of the right-angle sides which are two-two collinear, epsilon represents a predetermined plate shape coefficient, S represents RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate, and lambda represents wavelength.
Preferably, when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the plate shape coefficient takes the value of 3/4;
when the first side vertical plate, the second side vertical plate and the bottom plate are all square, the plate shape coefficient value is 1/12.
In the embodiment of the invention, the right-angle edge of the first side vertical plate, the right-angle edge of the second side vertical plate and the right-angle edge of the bottom plate are collinear in pairs, namely the first side vertical plate, the second side vertical plate and the bottom plate are arranged vertically to each other, so that the attenuation of RCS magnitude can be reduced to the greatest extent. The first RCS visible angle area regulator is connected with the first side vertical plate and the bottom plate, and the second RCS visible angle area regulator is connected with the second side vertical plate and the bottom plate, so that the ejection area of electromagnetic waves on the radar scattering cross section visible angle area corner reflector is reduced, the width of the RCS visible angle area is further narrowed, and the purpose of enhancing the application flexibility of the radar scattering cross section visible angle area corner reflector is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a radar scattering cross-section visible angle range corner reflector according to an embodiment of the present invention;
FIG. 2 is a RCS spatial distribution diagram of a radar cross-section visible corner reflector according to an embodiment of the present invention;
FIG. 3 is an RCS spatial distribution diagram of another radar cross-section visible corner reflector according to an embodiment of the present invention;
FIG. 4 is a RCS spatial distribution diagram of a radar cross-section visible corner reflector according to another embodiment of the present invention;
FIG. 5 is a RCS spatial distribution diagram of a radar cross-section visible corner reflector according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another radar cross-section visible angle reflector according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another radar scattering cross-section visible angle reflector according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a radar scattering cross section visible angle range corner reflector, including:
a first side vertical plate 101, a second side vertical plate 102, a bottom plate 103, a first radar scattering cross section RCS visible angle range adjuster 104 and a second RCS visible angle range adjuster 105;
the right-angle edge of the first side vertical plate 101, the right-angle edge of the second side vertical plate 102 and the right-angle edge of the bottom plate 103 are perpendicular to each other and collinear with each other, wherein the lengths of the right-angle edges collinear with each other are equal;
the first RCS visible angle range adjuster 104 is connected to the first side vertical plate 101 and the bottom plate 103;
the second RCS visible angle range adjuster 105 is connected to the second side plate 102 and the bottom plate 103.
In the embodiment of the invention, the right-angle edge of the first side vertical plate, the right-angle edge of the second side vertical plate and the right-angle edge of the bottom plate are collinear in pairs, namely the first side vertical plate, the second side vertical plate and the bottom plate are arranged vertically to each other, so that the attenuation of RCS magnitude can be reduced to the greatest extent. The first RCS visible angle area regulator is connected with the first side vertical plate and the bottom plate, and the second RCS visible angle area regulator is connected with the second side vertical plate and the bottom plate, so that the ejection area of electromagnetic waves on the radar scattering cross section visible angle area corner reflector is reduced, the width of the RCS visible angle area is further narrowed, and the purpose of enhancing the application flexibility of the radar scattering cross section visible angle area corner reflector is achieved.
Example two
In order to narrow the width of the RCS visible angle range by the radar scattering cross-section visible angle range corner reflector, in an embodiment of the present invention, a ratio of a length of the first RCS visible angle range adjuster collinear with each two collinear right-angle sides to a length of the two collinear right-angle sides is a predetermined medium plate size ratio factor, where the length of the first RCS visible angle range adjuster and the length of the second RCS visible angle range adjuster collinear with each two collinear right-angle sides are equal to each other.
In the embodiment of the invention, as the first RCS visible angle range adjuster is connected with the first side vertical plate and the bottom plate, the first RCS visible angle range adjuster is collinear with every two collinear right-angle sides, namely the first RCS visible angle range adjuster is collinear with the mutually collinear right-angle sides of the first side vertical plate and the bottom plate. And the visible angle region regulator of second RCS is connected with second side riser and bottom plate, and the visible angle region regulator of first RCS and the visible angle region regulator of second RCS, and two liang of collinear right-angle sides collinear length equals, and the visible angle region regulator of first RCS and the visible angle region regulator of second RCS shape is mirror symmetry promptly to make under the prerequisite of fully guaranteeing through the visible angle region regulator of first RCS and the visible angle region regulator regulation and control effect of second RCS, make the molding of the visible angle region corner reflector of radar scattering cross section beautifully coordinate. The length of the first RCS visible angle area regulator and the length of the second RCS visible angle area regulator are collinear with every two collinear right-angle edges respectively, and the ratio of the length of the right-angle edges to the length of the every two collinear right-angle edges is within a value range of a predetermined dielectric plate size ratio factor, so that the width of the RCS visible angle area can be narrowed through the radar scattering cross section visible angle area corner reflector, and the purpose of improving the application flexibility of the radar scattering cross section visible angle area corner reflector is further achieved.
EXAMPLE III
In order to enhance the application flexibility of the radar scattering cross section visible angle range corner reflector, in an embodiment of the present invention, the dielectric plate size ratio factor and the RCS visible angle range width satisfy the following formula:
y＝ax3+bx2+cx+d
wherein y represents the width of the RCS visible angle region, x represents the size ratio factor of the dielectric plate, a represents a predetermined first adjusting factor, b represents a predetermined second adjusting factor, c represents a predetermined third adjusting factor, and d represents a predetermined fourth adjusting factor.
In the embodiment of the invention, according to actual requirements, the size ratio factor of the dielectric slab can be determined by determining the required width of the RCS visible angle region, so that the size of the radar scattering cross section visible angle region corner reflector can be further determined, and the width of the RCS visible angle region can also be determined by determining the side length of the right-angle side of two collinear rcS and the collinear length of the first RCS visible angle region regulator and the second RCS visible angle region regulator.
Example four
In an embodiment of the present invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate include: a square or isosceles right triangle;
when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the value of the first adjusting factor is-48, the value of the second adjusting factor is 61, the value of the third adjusting factor is-61, and the value of the fourth adjusting factor is 48;
when the first side vertical plate, the second side vertical plate and the bottom plate are all square, the value of the first adjusting factor is 4, the value of the second adjusting factor is-3, the value of the third adjusting factor is-26, and the value of the fourth adjusting factor is 25.
In the embodiment of the present invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate may be the same or different. However, when the shapes of the first side plate, the second side plate and the bottom plate are different, the magnitude change is caused, and the magnitude attenuation is severe. Therefore, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all the same, and the RCS visible angle domain reduction is more ideal through the radar scattering cross section visible angle domain corner reflector.
Namely, when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle,
y＝-48x3+61x2-61x+48
when the first side vertical plate, the second side vertical plate and the bottom plate are all square,
y＝4x3-3x2-26x+ 25
it is noted that the shape of the first side riser, the second side riser, and the base plate can be a polygon with at least one right angle, such as a rectangle, an equilateral triangle, a pentagon with at least one right angle, or a hexagon with at least one right angle.
EXAMPLE five
In an embodiment of the present invention, when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the first RCS visible angle region adjuster and the second RCS visible angle region adjuster are in the shape of a triangular pyramid;
when the first side plate, the second side plate and the bottom plate are all square in shape, the first RCS visible angle range adjuster and the second RCS visible angle range adjuster are triangular prism-shaped.
In the embodiment of the invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles or squares, the shapes of the first RCS visible angle region regulator and the second RCS visible angle region regulator are triangular pyramid or triangular prism correspondingly, and the shapes of the radar scattering cross section visible angle region reflectors can be more attractive and coordinated on the premise of fully ensuring the regulation and control effects of the first RCS visible angle region regulator and the second RCS visible angle region regulator.
EXAMPLE six
In an embodiment of the present invention, a value range of the dielectric plate size ratio factor is (0, 1).
In the embodiment of the invention, the size ratio factor of the dielectric plate is the ratio of the length of the first RCS visible angle range regulator or the second RCS visible angle range regulator and the collinear right-angle sides of two collinear lines to the side length of the collinear right-angle sides of two collinear lines. The dielectric plate size ratio factor is less than or equal to 0, and the first RCS visible angle range regulator or the second RCS visible angle range regulator does not exist in the radar scattering cross section visible angle range reflector, and when the dielectric plate size ratio factor is greater than or equal to 1, the first RCS visible angle range regulator and the second RCS visible angle range regulator cannot sufficiently play a role in regulating and controlling the radar scattering cross section visible angle range reflector, so that the RCS visible angle range cannot be reduced.
It should be noted that the values of the dielectric slab dimension ratio factor may be 0.2, 0.4, 0.6, and 0.8.
EXAMPLE seven
In an embodiment of the present invention, the first side vertical plate, the second side vertical plate, the bottom plate, the first RCS visible angle region adjuster, and the second RCS visible angle region adjuster are made of metal.
In the embodiment of the invention, the first side vertical plate, the second side vertical plate, the bottom plate, the first RCS visible angle region regulator and the second RCS visible angle region regulator can be made of steel, copper, aluminum, alloy or iron.
Example eight
In an embodiment of the present invention, the thickness ranges of the first side vertical plate, the second side vertical plate and the bottom plate are [3mm, 7mm ].
In the embodiment of the invention, the thicknesses of the first side vertical plate, the second side vertical plate and the bottom plate are all in the range of [3mm, 7mm ], so that the situation that the radar scattering cross section visible angle area corner reflector is too sunken to affect use due to the fact that the first side vertical plate, the second side vertical plate and the bottom plate are too thick can be avoided, and the situation that the radar scattering cross section visible angle area corner reflector is easy to deform due to too thin can be avoided, so that the RCS visible angle area can be reduced.
It should be noted that the thicknesses of the first side vertical plate, the second side vertical plate and the bottom plate can be 3mm, 5mm and 7mm, and 5mm is the optimal thickness value of the first side vertical plate, the second side vertical plate and the bottom plate.
Example nine
In an embodiment of the present invention, the side length of each two collinear right-angle sides and the RCS of the geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate satisfy the following formula:
wherein l represents the side length of the right-angle sides which are two-two collinear, epsilon represents a predetermined plate shape coefficient, S represents RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate, and lambda represents wavelength.
In the embodiment of the invention, the side lengths of the collinear right-angle sides when the first side vertical plate, the second side vertical plate and the bottom plate are perpendicular to each other, namely the side lengths of the two collinear right-angle sides can be determined according to actual requirements, and then the RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate can be determined through the formula.
Similarly, the RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate can be determined according to actual requirements, and the side length of the right-angle sides which are collinear in pairs is further determined.
Example ten
In an embodiment of the present invention, when the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles, the value of the plate shape coefficient is 3/4;
when the first side vertical plate, the second side vertical plate and the bottom plate are all square, the plate shape coefficient value is 1/12.
In the embodiment of the present invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate may be the same or different. In order to avoid the electromagnetic wave when reflecting between first side riser, second side riser and bottom plate, because the area difference of first side riser, second side riser and bottom plate leads to the change of magnitude, the shape homogeneous phase of first side riser, second side riser and bottom plate is the same, the RCS of the geometry that first side riser, second side riser and bottom plate formed is more ideal, and the shape of first side riser, second side riser and bottom plate is isosceles right triangle or square, not only the preparation of being convenient for, still be favorable to radar scattering cross section visible angle area corner reflector's equipment.
As shown in fig. 2, the RCS spatial distribution diagram of the corner reflector in the visible angular region of the radar scattering cross section is shown when the first side vertical plate, the second side vertical plate and the bottom plate are all square, and the dielectric plate size ratio factor is 0.5.
As shown in fig. 3, it is shown that the RCS spatial distribution diagram of the radar scattering cross section visible angle area corner reflector when the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles and the dielectric plate size ratio factor is 0.5.
As shown in fig. 4, the RCS spatial distribution diagram of the corner reflector in the visible angular region of the radar scattering cross section is shown when the first side vertical plate, the second side vertical plate and the bottom plate are all square, and the dielectric plate size ratio factor is 0.8.
As shown in fig. 5, the RCS spatial distribution diagram of the radar scattering cross section visible angle reflector is shown when the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles and the dielectric plate size ratio factor is 0.8.
As can be seen from fig. 2 and 3, and fig. 4 and 5, under the condition that the size ratio factor of the dielectric slab is the same, the width of the RCS visible angle region when the first side vertical plate, the second side vertical plate and the bottom plate are all square is narrower than the width of the RCS visible angle region when the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles.
As can be seen from fig. 2 and 4, and fig. 3 and 5, under the condition that the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all the same, the larger the dielectric plate size ratio factor is, the narrower the RCS visible angle range width is.
In summary, the sizes of the first RCS visible angle range adjuster and the second RCS visible angle range adjuster are controlled, that is, the size ratio factor of the dielectric plate is controlled, that is, the width of the RCS visible angle range is controlled. According to the RCS space distribution diagram, under the condition that the lengths of the two collinear right-angle sides are fixed values, the width of the RCS visible angle area is narrowed along with the increase of the sizes of the first RCS visible angle area regulator and the second RCS visible angle area regulator, namely the increase of the size ratio factor of the medium plate.
In order to more clearly illustrate the technical solutions and advantages of the present invention, taking the following example that the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles, and the shapes of the first RCS visible angle region adjuster and the second RCS visible angle region adjuster are both triangular pyramid, as shown in fig. 6, a detailed description is made on the radar scattering cross section visible angle region corner reflector provided by the embodiment of the present invention, including:
a first side riser (AOB), a second side riser (AOC), a base plate (BOC), a first RCS visibility angle adjuster (DBEF), and a second RCS visibility angle adjuster (HCIG).
AO is a right-angle side of the first side vertical plate and the second side vertical plate which are collinear with each other;
BO is a right-angle edge formed by the first side vertical plate and the bottom plate which are collinear;
CO is a right-angle edge formed by the second side vertical plate and the bottom plate which are collinear;
AO is mutually vertical to BO and CO respectively, BO is mutually vertical to OC, and the lengths of AO, BO and CO are equal;
OZ is a perpendicular bisector of BC;
the first RCS visible angle range adjuster (DBEF) and the second RCS visible angle range adjuster (HCIG) are symmetrical about the plane AOZ, namely DF is equal to HG in length, DE is equal to HI in length, FE is equal to GI in length, DB is equal to HC in length, BE is equal to IC in length, and BF is equal to GC in length;
wherein DF is perpendicular to AB, FE is perpendicular to BC, DE is perpendicular to BC;
HI is perpendicular to BC, HG is perpendicular to OC, GI is perpendicular to BC;
the length ratio of BF to BO is the size ratio factor of the dielectric plate;
the length ratio of GC to OC is a dielectric plate size ratio factor;
the value range of the dielectric plate size ratio factor is (0, 1).
For more clearly illustrating the technical solutions and advantages of the present invention, the following takes the first side plate, the second side plate and the bottom plate all having a square shape, and the first RCS visible angle range adjuster and the second RCS visible angle range adjuster each having a triangular prism shape as an example, as shown in fig. 7, a radar scattering cross-section visible angle range corner reflector provided by an embodiment of the present invention is described in detail, and includes:
a first side riser (LKOM), a second side riser (KQPO), a bottom plate (MOPN), a first RCS angular visibility range adjuster (LSR-MTU) and a second RCS angular visibility range adjuster (QWV-PXY).
KO is a right-angle edge of the first side vertical plate and the second side vertical plate which are collinear with each other;
MO is a right-angle edge formed by the first side vertical plate and the bottom plate which are collinear;
PO is a right-angle edge formed by the second side vertical plate and the bottom plate which are collinear;
KO is perpendicular to MO and PO respectively, MO is perpendicular to OP, and the lengths of KO, MO and PO are equal;
the first RCS visible angle range adjuster (LSR-MTU) and the second RCS visible angle range adjuster (QWV-PXY) are mirror symmetric about a plane KNO, namely LR and QV are equal in length, RS and VW are equal in length, LS and WQ are equal in length, MU and YP are equal in length, MT and XP are equal in length, TU and XY are equal in length, wherein LS and LR are equal in length, and WQ and VQ are equal in length;
RU is perpendicular to LK and MO, LS is perpendicular to LK, and ST is perpendicular to MN and LS;
VX is perpendicular to KQ and OP, WQ is perpendicular to KQ, and WX is perpendicular to WQ and NP;
the length ratio of MU to MO is the size ratio factor of the dielectric plate;
the ratio of the lengths of YP and OP is the medium plate dimension ratio factor.
The value range of the dielectric plate size ratio factor is (0, 1).
In summary, the embodiments of the present invention have at least the following advantages:
1. in an embodiment of the invention, the right-angle edge of the first side vertical plate, the right-angle edge of the second side vertical plate and the right-angle edge of the bottom plate are collinear in pairs, namely the first side vertical plate, the second side vertical plate and the bottom plate are arranged vertically to each other, so that the attenuation of RCS magnitude can be reduced to the greatest extent. The first RCS visible angle area regulator is connected with the first side vertical plate and the bottom plate, and the second RCS visible angle area regulator is connected with the second side vertical plate and the bottom plate, so that the ejection area of electromagnetic waves on the radar scattering cross section visible angle area corner reflector is reduced, the width of the RCS visible angle area is further narrowed, and the purpose of enhancing the application flexibility of the radar scattering cross section visible angle area corner reflector is achieved.
2. In an embodiment of the present invention, since the first RCS visible angle range adjuster is connected to the first side vertical plate and the bottom plate, the first RCS visible angle range adjuster is collinear with every two collinear right-angle sides, that is, the first RCS visible angle range adjuster is collinear with the mutually collinear right-angle sides of the first side vertical plate and the bottom plate. And the visible angle region regulator of second RCS is connected with second side riser and bottom plate, and the visible angle region regulator of first RCS and the visible angle region regulator of second RCS, and two liang of collinear right-angle sides collinear length equals, and the visible angle region regulator of first RCS and the visible angle region regulator of second RCS shape is mirror symmetry promptly to make under the prerequisite of fully guaranteeing through the visible angle region regulator of first RCS and the visible angle region regulator regulation and control effect of second RCS, make the molding of the visible angle region corner reflector of radar scattering cross section beautifully coordinate. The length of the first RCS visible angle area regulator and the length of the second RCS visible angle area regulator are collinear with every two collinear right-angle edges respectively, and the ratio of the length of the right-angle edges to the length of the every two collinear right-angle edges is within a value range of a predetermined dielectric plate size ratio factor, so that the width of the RCS visible angle area can be narrowed through the radar scattering cross section visible angle area corner reflector, and the purpose of improving the application flexibility of the radar scattering cross section visible angle area corner reflector is further achieved.
3. In an embodiment of the invention, according to actual requirements, the size ratio factor of the dielectric slab can be determined by determining the required width of the RCS visible angle region, so that the size of the radar scattering cross section visible angle region corner reflector can be determined, and the width of the RCS visible angle region can also be determined by determining the side length of the right-angle side of two collinear RCS and the collinear length of the first RCS visible angle region adjuster and the second RCS visible angle region adjuster.
4. In an embodiment of the present invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate may be the same or different. However, when the shapes of the first side plate, the second side plate and the bottom plate are different, the magnitude change is caused, and the magnitude attenuation is severe. Therefore, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all the same, and the RCS visible angle domain reduction is more ideal through the radar scattering cross section visible angle domain corner reflector.
5. In an embodiment of the invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate are all isosceles right triangles or squares, the shapes of the first RCS visible angle region regulator and the second RCS visible angle region regulator are triangular pyramid or triangular prism correspondingly, and the shapes of the radar scattering cross section visible angle region reflectors can be more attractive and coordinated on the premise of fully ensuring the regulation and control effects of the first RCS visible angle region regulator and the second RCS visible angle region regulator.
6. In an embodiment of the present invention, the dielectric plate dimension ratio factor is a ratio of the length of the first RCS visible angle range adjuster or the second RCS visible angle range adjuster and the collinear right-angle sides, and the side length of the collinear right-angle sides. The dielectric plate size ratio factor is less than or equal to 0, and the first RCS visible angle range regulator or the second RCS visible angle range regulator does not exist in the radar scattering cross section visible angle range reflector, and when the dielectric plate size ratio factor is greater than or equal to 1, the first RCS visible angle range regulator and the second RCS visible angle range regulator cannot sufficiently play a role in regulating and controlling the radar scattering cross section visible angle range reflector, so that the RCS visible angle range cannot be reduced.
7. In an embodiment of the present invention, the first side vertical plate, the second side vertical plate, the bottom plate, the first RCS visible angle adjuster, and the second RCS visible angle adjuster may be made of steel, copper, aluminum, alloy, or iron.
8. In an embodiment of the invention, the thicknesses of the first side vertical plate, the second side vertical plate and the bottom plate are all in a range of [3mm, 7mm ], so that the situation that the radar scattering cross section visible angle area corner reflector is too sunken to affect use due to the fact that the first side vertical plate, the second side vertical plate and the bottom plate are too thick can be avoided, and the situation that the radar scattering cross section visible angle area corner reflector is easy to deform due to too thin can be avoided, so that the RCS visible angle area can be reduced.
9. In an embodiment of the present invention, the side lengths of the collinear right-angle sides when the first side vertical plate, the second side vertical plate and the bottom plate are perpendicular to each other, that is, the side lengths of two collinear right-angle sides, can be determined according to an actual requirement, and then the RCS of the geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate can be determined through the above formula.
10. In an embodiment of the present invention, the shapes of the first side vertical plate, the second side vertical plate and the bottom plate may be the same or different. In order to avoid the electromagnetic wave when reflecting between first side riser, second side riser and bottom plate, because the area difference of first side riser, second side riser and bottom plate leads to the change of magnitude, the shape homogeneous phase of first side riser, second side riser and bottom plate is the same, the RCS of the geometry that first side riser, second side riser and bottom plate formed is more ideal, and the shape of first side riser, second side riser and bottom plate is isosceles right triangle or square, not only the preparation of being convenient for, still be favorable to radar scattering cross section visible angle area corner reflector's equipment.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A radar cross-section visible angle range corner reflector, comprising: the device comprises a first side vertical plate, a second side vertical plate, a bottom plate, a first RCS visible angle region regulator and a second RCS visible angle region regulator;
the right-angle edge of the first side vertical plate, the right-angle edge of the second side vertical plate and the right-angle edge of the bottom plate are perpendicular to each other and collinear with each other, wherein the lengths of the collinear right-angle edges are equal;
the first RCS visible angle range regulator is connected with the first side vertical plate and the bottom plate;
the second RCS visible angle range regulator is connected with the second side vertical plate and the bottom plate;
the ratio of the length of the first RCS visible angle region regulator to the collinear length of the two collinear right-angle sides to the length of the side of the two collinear right-angle sides is a predetermined dielectric slab size ratio factor, wherein the length of the first RCS visible angle region regulator to the collinear length of the second RCS visible angle region regulator to the collinear length of the two collinear right-angle sides is equal;
the dielectric slab size ratio factor and the RCS visible angle domain width satisfy the following formula:
y＝ax3+bx2+cx+d
wherein y represents the width of the RCS visible angle region, x represents the size ratio factor of the dielectric plate, a represents a predetermined first adjusting factor, b represents a predetermined second adjusting factor, c represents a predetermined third adjusting factor, and d represents a predetermined fourth adjusting factor.
2. The radar cross-section visible angle range corner reflector according to claim 1,
the shapes of the first side vertical plate, the second side vertical plate and the bottom plate comprise: a square or isosceles right triangle;
when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the value of the first adjusting factor is-48, the value of the second adjusting factor is 61, the value of the third adjusting factor is-61, and the value of the fourth adjusting factor is 48;
when the first side vertical plate, the second side vertical plate and the bottom plate are all square, the value of the first adjusting factor is 4, the value of the second adjusting factor is-3, the value of the third adjusting factor is-26, and the value of the fourth adjusting factor is 25.
3. The radar cross-section visible angle range corner reflector according to claim 2,
when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the first RCS visible angle region regulator and the second RCS visible angle region regulator are in the shape of triangular pyramids;
when the first side plate, the second side plate and the bottom plate are all square in shape, the first RCS visible angle range adjuster and the second RCS visible angle range adjuster are triangular prism-shaped.
4. The radar cross-section visible angle range corner reflector according to claim 2,
the value range of the size ratio factor of the dielectric slab is (0, 1).
5. The radar cross-section visible angle range corner reflector according to claim 1,
the first side vertical plate, the second side vertical plate, the bottom plate, the first RCS visible angle region regulator and the second RCS visible angle region regulator are all made of metal materials.
6. The radar cross-section visible angle range corner reflector according to claim 1,
the thickness ranges of the first side vertical plate, the second side vertical plate and the bottom plate are [3mm, 7mm ].
7. The radar cross-section visible angle range corner reflector according to any one of claims 1 to 6,
the side length of the right-angle sides which are two-two collinear and the RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate satisfy the following formula:
wherein l represents the side length of the right-angle sides which are two-two collinear, epsilon represents a predetermined plate shape coefficient, S represents RCS of a geometric body formed by the first side vertical plate, the second side vertical plate and the bottom plate, and lambda represents wavelength.
8. The radar cross-section visible angle range corner reflector according to claim 7,
when the first side vertical plate, the second side vertical plate and the bottom plate are all in the shape of an isosceles right triangle, the shape coefficient value is 3/4;
when the first side vertical plate, the second side vertical plate and the bottom plate are all square, the plate shape coefficient value is 1/12.
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| CN109459736B (en) * | 2019-01-04 | 2020-10-13 | 北京环境特性研究所 | Radar target design method and device |
| CN109444821B (en) * | 2019-01-04 | 2020-10-30 | 北京环境特性研究所 | Controllable corner reflector polarizes |
| CN109490863B (en) * | 2019-01-04 | 2021-02-26 | 北京环境特性研究所 | Method for extracting size parameters of three-face angle structure |
| CN109765537B (en) * | 2019-01-04 | 2020-10-13 | 北京环境特性研究所 | Corner reflector with adjustable polarization and polarization adjusting method of corner reflector |
| CN110824435A (en) * | 2019-11-13 | 2020-02-21 | 北京环境特性研究所 | Water accumulation preventing corner reflector and mounting method thereof |
| CN110794375B (en) * | 2019-12-02 | 2024-05-17 | 湖北航天飞行器研究所 | Radar scattering cross section reinforcing means |
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