CN109459736A - A kind of radar drone design method and apparatus - Google Patents
A kind of radar drone design method and apparatus Download PDFInfo
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- CN109459736A CN109459736A CN201910006970.5A CN201910006970A CN109459736A CN 109459736 A CN109459736 A CN 109459736A CN 201910006970 A CN201910006970 A CN 201910006970A CN 109459736 A CN109459736 A CN 109459736A
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- rectangular plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
Abstract
The present invention relates to a kind of radar drone design method and apparatus, an embodiment of the method includes: the angle that two pieces of rectangular plates are determined according to the dual station angle in index request；Establish the dual station RCS and the functional relation at incident orientation angle and rectangular plate area of non-perpendicular dihedral angle；The rectangular plate area of the dual station RCS peak value corresponded in index request is obtained using the functional relation；Rectangular plate area according to preset rules and acquisition determines the common edge length and width of rectangular plate.The embodiment is capable of providing the new strong scatterer for being suitable for bistatic radar system to substitute traditional radar target.
Description
Technical field
The present invention relates to Radar Technology field more particularly to a kind of radar drone design method and apparatus.
Background technique
Radar target is to search for, capture, track, fight and attack target property of interest from weapon system, is used
The method of science is approximate, equivalent simulation target property, it be weapon system, the examination of target seeker equipment and test for identification premise and
Basis.Radar target is the minimum composition part of radar target system, provides the point scattering simulated behavior of target.It is actual multiple
Miscellaneous target generally has multiple sources distribution character, and the Electromagnetic Scattering Characteristics to realize full target can be combined by multiple radar targets
Simulation.
What traditional radar target was designed primarily directed to monostatic radar system, it generallys use after having to enhancing ability
Scatterer realize, such as vertical Dihedral Corner Reflectors, trihedral corner reflector, top cap structure, the primary ball of dragon.But for dual station thunder
EM scattering intensity up to system, these strong back scattering targets is greatly reduced, and can not provide enough scattering magnitudes.
Therefore it needs to provide the new strong scatterer for being suitable for bistatic radar system to substitute traditional radar target.
Summary of the invention
The technical problem to be solved by the present invention is to how provide the new strong scatterer for being suitable for bistatic radar system to replace
For traditional radar target.
In order to solve the above-mentioned technical problem, in one aspect, the present invention provides a kind of radar drone design methods.
The radar drone design method of the embodiment of the present invention is used to be determined for compliance with the non-perpendicular dihedral angle reflection of index request
Target of the device as bistatic radar；Wherein, the index request includes: Bistatic RCS RCS peak value and dual station angle, institute
Non-perpendicular Dihedral Corner Reflectors are stated to be made of the identical rectangular plate of two block sizes；The described method includes: according to the dual station angle
Determine the angle of two pieces of rectangular plates；Establish the dual station RCS and incident orientation angle and rectangular plate area of non-perpendicular dihedral angle
Functional relation；The rectangular plate area of the dual station RCS peak value corresponded in index request is obtained using the functional relation；According to
The common edge length and width of rectangular plate is determined according to the rectangular plate area of preset rules and acquisition.
Preferably, the angle that two pieces of rectangular plates are determined according to the dual station angle, specifically includes: utilizing following formula
Determine the angle of two pieces of rectangular plates:
Wherein, α is the angle of two pieces of rectangular plates, and Δ φ is the dual station angle in index request.
Preferably, the functional relation is as shown by the following formula:
Δ φ=φr-φi
Wherein, σbisFor dual station RCS, AeFor effective area, λ is electromagnetic wavelength, and A is rectangular plate area, φiFor incidence
Azimuth, φrTo receive azimuth.
Preferably, the rectangle for obtaining the dual station RCS peak value corresponded in index request using the functional relation is flat
Plate suqare specifically includes: expression formula when dual station RCS is maximized is obtained according to the functional relation, it will be in index request
Dual station RCS peak value substitutes into the expression formula, obtains the rectangular plate area for corresponding to the dual station RCS peak value.
Preferably, the rectangular plate area of the corresponding dual station RCS peak value determines according to the following formula:
Wherein, A0For the rectangular plate area of the correspondence dual station RCS peak value, σbis,maxFor the dual station RCS peak value.
Preferably, the rectangular plate area according to preset rules and acquisition determine rectangular plate public edge lengths and
Width specifically includes:
The common edge length and width of rectangular plate is determined using following formula:
Wherein, L is the public edge lengths of rectangular plate, and a is the width of rectangular plate.
On the other hand, the present invention provides a kind of radar drone design device.
The non-perpendicular dihedral angle that the radar drone design device of the embodiment of the present invention can be used for being determined for compliance with index request is anti-
Target of the emitter as bistatic radar；Wherein, the index request includes: Bistatic RCS RCS peak value and dual station angle,
The non-perpendicular Dihedral Corner Reflectors are made of the identical rectangular plate of two block sizes；Described device can include: angle calcu-lation list
Member, for determining the angle of two pieces of rectangular plates according to the dual station angle；Areal calculation unit, for establishing non-perpendicular dihedral angle
Dual station RCS and incident orientation angle and rectangular plate area functional relation；It obtains to correspond to using the functional relation and refer to
The rectangular plate area of dual station RCS peak value in mark requirement；Length and width computing unit, for the rectangle according to preset rules and acquisition
Platen area determines the common edge length and width of rectangular plate.
Preferably, angle calcu-lation unit can be further used for: the angle of two pieces of rectangular plates is determined using following formula:
Areal calculation unit can be further used for: establish the functional relation of following formula expression:
Δ φ=φr-φi
Wherein, α is the angle of two pieces of rectangular plates, and Δ φ is the dual station angle in index request；σbisFor dual station RCS, AeFor
Effective area, λ are electromagnetic wavelength, and A is rectangular plate area, φiFor incident orientation angle, φrTo receive azimuth.
Preferably, areal calculation unit can be further used for: when being maximized according to functional relation acquisition dual station RCS
Expression formula, the dual station RCS peak value in index request is substituted into the expression formula, obtains the square for corresponding to the dual station RCS peak value
Shape platen area；And
The rectangular plate area of the corresponding dual station RCS peak value determines according to the following formula:
Wherein, A0For the rectangular plate area of the correspondence dual station RCS peak value, σbis,maxFor the dual station RCS peak value.
Preferably, length and width computing unit can be further used for: the public edge lengths and width of rectangular plate are determined using following formula
Degree:
Wherein, L is the public edge lengths of rectangular plate, and a is the width of rectangular plate.
Above-mentioned technical proposal of the invention has the advantages that in embodiments of the present invention, provides a kind of non-perpendicular two face
Corner reflector as bistatic radar target, it can be achieved that biggish EM scattering intensity, to solve traditional vertical dihedral angle
Reflector cannot provide the problem of enough magnitude Bistatic RCS RCS (Radar Cross Section).Meanwhile this
Invention establishes the dual station RCS and geometric parameters of non-perpendicular dihedral angle structure for index requests such as dual station angle, dual station RCS peak values
Functional relation between number illustrates the design cycle of bistatic radar target unit, provides dihedral angle angle, rectangular plate face
It is double to realize target under fixed dual station corner condition for long-pending and the parameters such as the public edge lengths of rectangular plate and width calculation formula
It stands the simulation of RCS.
Detailed description of the invention
Fig. 1 is the key step schematic diagram of the radar drone design method of the embodiment of the present invention；
Fig. 2 is the geometric representation of the non-perpendicular Dihedral Corner Reflectors of the embodiment of the present invention；
Fig. 3 is the secondary mirror surface principle of reflection schematic diagram of the non-perpendicular Dihedral Corner Reflectors of the embodiment of the present invention；
Fig. 4 is the RCS curve of the non-perpendicular Dihedral Corner Reflectors of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is the key step schematic diagram of the radar drone design method of the embodiment of the present invention, and this method can be used for determining
Meet target of the non-perpendicular Dihedral Corner Reflectors of index request as bistatic radar；Wherein, These parameters require to include: dual station
Radar cross section RCS peak value (i.e. maximum value) and dual station angle.It is appreciated that These parameters require to can be occurrence, it can also
To be a certain order of magnitude, hereafter technical solution of the present invention will be introduced so that index request is occurrence as an example.Dual station angle refers to
The difference at azimuth and incident orientation angle is received in bistatic radar system.
Above-mentioned non-perpendicular Dihedral Corner Reflectors are made of the identical rectangular plate of two block sizes.Fig. 2 is the embodiment of the present invention
Non-perpendicular Dihedral Corner Reflectors geometric representation.As shown in Fig. 2, non-perpendicular Dihedral Corner Reflectors are by equal sized (i.e. long
Degree and width be equal) two pieces of rectangular plates 1 and 2 composition, the two have common edge, public edge lengths be L, the width of the two
It is a, the angle of above-mentioned two pieces of rectangular plates is α, and in concrete application, above-mentioned angle can be acute angle or obtuse angle.
The radar drone design method of the embodiment of the present invention can be executed with specific reference to following steps:
Step S101: the angle of two pieces of rectangular plates is determined according to the dual station angle in index request.
In this step, the angle of non-perpendicular dihedral angle is calculated using the dual station angle in index request.Non-perpendicular two face
The geometrical relationship of each angle of corner structure can be as shown in Figure 3.Fig. 3 is the secondary of the non-perpendicular Dihedral Corner Reflectors of the embodiment of the present invention
Mirror-reflection schematic illustration, in Fig. 3, φiFor incident orientation angle, φrTo receive azimuth, Δ φ is in index request
Dual station angle,For radar incident direction,For radar receiving direction,The normal direction of respectively two pieces rectangular plates.Point
Analyse each angle in Fig. 3, available following formula determines the angle αs of two pieces of rectangular plates:
Step S102: the dual station RCS and the function at incident orientation angle and rectangular plate area of non-perpendicular dihedral angle are established
Relationship；The rectangular plate area of the dual station RCS peak value corresponded in index request is obtained using the functional relation.
In practical application, it can derive the following dual station RCS formula of non-perpendicular equilateral dihedral angle, can indicate above-mentioned function
Relationship:
Δ φ=φr-φi
Wherein, σbisFor dual station RCS, AeFor effective area, λ is electromagnetic wavelength, and A is rectangular plate area, and min is to take
Minimum value.
After getting above-mentioned functional relation, expression formula when dual station RCS is maximized can be obtained according to functional relation, and
Dual station RCS peak value in index request is substituted into the expression formula to get to the rectangular plate area of corresponding dual station RCS peak value,
The rectangular plate area can determine according to the following formula:
Wherein, A0For the rectangular plate area of corresponding dual station RCS peak value, σbis,maxFor the peak dual station RCS in index request
Value.
Step S103: the rectangular plate area according to preset rules and acquisition determines the public edge lengths and width of rectangular plate
Degree.
In embodiments of the present invention, above-mentioned rule can flexible setting according to actual needs, for example, volume can be set to
Minimum principle, even the common edge length and width of rectangular plate is equal, the two can be calculate by the following formula at this time:
In this way, target of the reflector of determining non-perpendicular dihedral angle structure as bistatic radar system can be obtained.Fig. 4
It is the RCS curve of the non-perpendicular Dihedral Corner Reflectors of the embodiment of the present invention, non-perpendicular Dihedral Corner Reflectors as can see from Figure 4
Dual station RCS can with incident orientation angle change and be changed.In Fig. 4, abscissa is incident orientation angle, ordinate RCS
Value (unit is dB square metres), frequency 10GHz, dual station angle is 60 °, polarization mode VV, is gone out by above-mentioned workflow management
Rectangular plate angle is 120 °, and rectangular plate area is 2.35 square metres, and common edge length and width is 1.533 meters.
In embodiments of the present invention, it is further provided a kind of radar drone design device, for being determined for compliance with index request
Target of the non-perpendicular Dihedral Corner Reflectors as bistatic radar；Wherein, the index request includes: Bistatic RCS
RCS peak value and dual station angle, the non-perpendicular Dihedral Corner Reflectors are made of the identical rectangular plate of two block sizes；Described device can
Include: angle calcu-lation unit, can be used for determining the angle of two pieces of rectangular plates according to the dual station angle；Areal calculation unit, can
For establishing the dual station RCS and the functional relation at incident orientation angle and rectangular plate area of non-perpendicular dihedral angle；Using described
Functional relation obtains the rectangular plate area of the dual station RCS peak value corresponded in index request；Length and width computing unit can be used for according to
The common edge length and width of rectangular plate is determined according to the rectangular plate area of preset rules and acquisition.
Preferably, angle calcu-lation unit can be further used for: the angle of two pieces of rectangular plates is determined using following formula:
Areal calculation unit can be further used for: establish the functional relation of following formula expression:
Δ φ=φr-φi
Wherein, α is the angle of two pieces of rectangular plates, and Δ φ is the dual station angle in index request；σbisFor dual station RCS, AeFor
Effective area, λ are electromagnetic wavelength, and A is rectangular plate area, φiFor incident orientation angle, φrTo receive azimuth.
As a preferred embodiment, areal calculation unit can be further used for: obtain dual station RCS according to the functional relation
Dual station RCS peak value in index request is substituted into the expression formula, obtains corresponding to the dual station by expression formula when being maximized
The rectangular plate area of RCS peak value；
The rectangular plate area of the corresponding dual station RCS peak value determines according to the following formula:
Wherein, A0For the rectangular plate area of the correspondence dual station RCS peak value, σbis,maxFor the dual station RCS peak value.
In addition, in embodiments of the present invention, length and width computing unit can be further used for: determining rectangular plate using following formula
Common edge length and width:
Wherein, L is the public edge lengths of rectangular plate, and a is the width of rectangular plate.
In conclusion it is double to provide a kind of non-perpendicular Dihedral Corner Reflectors conduct in the technical solution of the embodiment of the present invention
Stand radar target, it can be achieved that biggish EM scattering intensity, so that solving traditional vertical Dihedral Corner Reflectors cannot provide
The problem of enough magnitude dual station RCS.Meanwhile the present invention establishes non-hang down for index requests such as dual station angle, dual station RCS peak values
Functional relation between the dual station RCS and geometric parameter of straight dihedral angle structure, illustrates the design stream of bistatic radar target unit
Journey, the calculating for providing dihedral angle angle, rectangular plate area and the parameters such as the public edge lengths of rectangular plate and width are public
Formula realizes the simulation of target dual station RCS under fixed dual station corner condition.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of radar drone design method, for being determined for compliance with the non-perpendicular Dihedral Corner Reflectors of index request as dual station thunder
The target reached；Wherein, the index request includes: Bistatic RCS RCS peak value and dual station angle, non-perpendicular two face
Corner reflector is made of the identical rectangular plate of two block sizes；It is characterized in that, which comprises
The angle of two pieces of rectangular plates is determined according to the dual station angle；
Establish the dual station RCS and the functional relation at incident orientation angle and rectangular plate area of non-perpendicular dihedral angle；Using described
Functional relation obtains the rectangular plate area of the dual station RCS peak value corresponded in index request；And
Rectangular plate area according to preset rules and acquisition determines the common edge length and width of rectangular plate.
2. the method according to claim 1, wherein described determine two pieces of rectangular plates according to the dual station angle
Angle specifically includes:
The angle of two pieces of rectangular plates is determined using following formula:
Wherein, α is the angle of two pieces of rectangular plates, and Δ φ is the dual station angle in index request.
3. according to the method described in claim 2, it is characterized in that, the functional relation as shown by the following formula:
Δ φ=φr-φi
Wherein, σbisFor dual station RCS, AeFor effective area, λ is electromagnetic wavelength, and A is rectangular plate area, φiFor incident orientation
Angle, φrTo receive azimuth.
4. according to the method described in claim 3, it is characterized in that, described wanted using functional relation acquisition corresponding to index
The rectangular plate area of dual station RCS peak value in asking, specifically includes:
Expression formula when dual station RCS is maximized is obtained according to the functional relation, by the dual station RCS peak value generation in index request
Enter the expression formula, obtains the rectangular plate area for corresponding to the dual station RCS peak value.
5. according to the method described in claim 4, it is characterized in that, the rectangular plate area root of the corresponding dual station RCS peak value
It is determined according to following formula:
Wherein, A0For the rectangular plate area of the correspondence dual station RCS peak value, σbis,maxFor the dual station RCS peak value.
6. according to the method described in claim 5, it is characterized in that, the rectangular plate area according to preset rules and acquisition
The common edge length and width for determining rectangular plate, specifically includes:
The common edge length and width of rectangular plate is determined using following formula:
Wherein, L is the public edge lengths of rectangular plate, and a is the width of rectangular plate.
7. a kind of radar drone design device, for being determined for compliance with the non-perpendicular Dihedral Corner Reflectors of index request as dual station thunder
The target reached；Wherein, the index request includes: Bistatic RCS RCS peak value and dual station angle, non-perpendicular two face
Corner reflector is made of the identical rectangular plate of two block sizes；It is characterized in that, described device includes:
Angle calcu-lation unit, for determining the angle of two pieces of rectangular plates according to the dual station angle；
Areal calculation unit, for establishing the dual station RCS and incident orientation angle and rectangular plate area of non-perpendicular dihedral angle
Functional relation；The rectangular plate area of the dual station RCS peak value corresponded in index request is obtained using the functional relation；And
Length and width computing unit, for determining the public edge lengths of rectangular plate according to the rectangular plate area of preset rules and acquisition
And width.
8. device according to claim 7, which is characterized in that
Angle calcu-lation unit is further used for: the angle of two pieces of rectangular plates is determined using following formula:
Areal calculation unit is further used for: establish the functional relation of following formula expression:
Δ φ=φr-φi
Wherein, α is the angle of two pieces of rectangular plates, and Δ φ is the dual station angle in index request；σbiS is dual station RCS, AeIt is effective
Area, λ are electromagnetic wavelength, and A is rectangular plate area, φiFor incident orientation angle, φrTo receive azimuth.
9. device according to claim 8, which is characterized in that
Areal calculation unit is further used for: obtaining expression formula when dual station RCS is maximized according to the functional relation, will refer to
Dual station RCS peak value in mark requirement substitutes into the expression formula, obtains the rectangular plate area for corresponding to the dual station RCS peak value；With
And
The rectangular plate area of the corresponding dual station RCS peak value determines according to the following formula:
Wherein, A0For the rectangular plate area of the correspondence dual station RCS peak value, σbis,maxFor the dual station RCS peak value.
10. device according to claim 9, which is characterized in that length and width computing unit is further used for: being determined using following formula
The common edge length and width of rectangular plate:
Wherein, L is the public edge lengths of rectangular plate, and a is the width of rectangular plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686556A (en) * | 2019-09-20 | 2020-01-14 | 中国飞行试验研究院 | Method and device for designing size of trial flight and fitting target of laser-guided missile |
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