CN110208271A - A kind of damage detecting method of phased array antenna, damage detection apparatus and terminal - Google Patents
A kind of damage detecting method of phased array antenna, damage detection apparatus and terminal Download PDFInfo
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- CN110208271A CN110208271A CN201910492779.6A CN201910492779A CN110208271A CN 110208271 A CN110208271 A CN 110208271A CN 201910492779 A CN201910492779 A CN 201910492779A CN 110208271 A CN110208271 A CN 110208271A
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- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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Abstract
The present invention is suitable for damage detection technology field, provide a kind of damage detecting method of phased array antenna, damage detection apparatus and terminal, the damage detecting method includes: the corresponding damage two dimensional image of damage front for obtaining target phased array antenna, the damage two dimensional image and preset reference three-dimensional model are subjected to visual angle matching, to determine benchmark two dimensional image corresponding with the damage two dimensional image, wherein, the reference three-dimensional model is based on the corresponding benchmark phased array antenna building of the target phased array antenna, by the damage two dimensional image compared with the benchmark two dimensional image carries out feature, obtain the damage characteristic matrix of the damage front.The present invention can obtain the degree of impairment of phased array antenna in time, provide accurate foundation for the timely reparation of the damage to phased array antenna.
Description
Technical field
The invention belongs to antenna damage detection technology field more particularly to a kind of damage detecting method of phased array antenna,
Damage detection apparatus and terminal.
Background technique
The characteristics of phased array antenna sweep speed is fast, wave beam control is flexible and multiple target detection ability, is modern battlefield weight
The information Perception equipment wanted, undertakes a variety of combat duties such as distant early warning, firepower control, battle reconnaissance, navigational guidance.But it is fighting
Under the environment of field, the protective capacities of phased array antenna is very weak, is highly prone to fragmentation and blast injury.Phased array antenna is once damaged
Wound can not work normally, and lead to that accurate data cannot be obtained.
In the prior art for the phased array antenna being damaged, still none is objective, accurately carries out to degree of impairment
The method of assessment can not obtain the degree of impairment of phased array antenna in time, be unfavorable for repairing in time for the damage to phased array antenna
It is multiple.
Summary of the invention
In view of this, the present invention provides a kind of damage detecting method of phased array antenna, damage detection apparatus, terminal and
Computer storage medium, it is intended to solve the degree of impairment that can not obtain phased array antenna in time in the prior art, be unfavorable for phase
The problem of controlling the timely reparation of the damage of array antenna.
The first aspect of the embodiment of the present invention provides a kind of damage detecting method of phased array antenna, the damage check
Method includes:
Obtain the corresponding damage two dimensional image of damage front of target phased array antenna；
The damage two dimensional image and preset reference three-dimensional model are subjected to visual angle matching, damage two with described with determining
Tie up the corresponding benchmark two dimensional image of image, wherein the reference three-dimensional model is corresponding based on the target phased array antenna
The building of benchmark phased array antenna；
By the damage two dimensional image compared with the benchmark two dimensional image carries out feature, the damage of the damage front is obtained
Hurt eigenmatrix.
Optionally, it is also wrapped before the damage two dimensional image is carried out visual angle matching with preset reference three-dimensional model
It includes:
Obtain the two dimensional image under multiple and different visual angles of benchmark phased array antenna；
Based on the two dimensional image under the multiple different perspectives, the reference three-dimensional mould of the benchmark phased array antenna is constructed
Type.
Optionally, after the damage characteristic matrix for obtaining the damage front, further includes:
Lesion assessment is carried out to the target phased array antenna based on the damage characteristic matrix, it is phased to obtain the target
The damage results of array antenna.
Optionally, described that the damage two dimensional image and preset reference three-dimensional model are subjected to visual angle matching, with determination
Benchmark two dimensional image corresponding with the damage two dimensional image includes:
The visual angle of the reference three-dimensional model is adjusted to aspect, so that the reference three-dimensional model is regarded in the target
The similarity of corresponding two dimensional image and the damage two dimensional image is greater than specified similarity threshold under angle；
By the reference three-dimensional model, corresponding two dimensional image is determined as and the damage two dimension under the aspect
The corresponding benchmark two dimensional image of image.
Optionally, it is described by the damage two dimensional image compared with the benchmark two dimensional image carries out feature, obtain described
Damage front damage characteristic matrix include:
Obtain the damage two dimensional character point set of the damage two dimensional image；
Obtain the benchmark two dimensional character point set of the benchmark two dimensional image；
The damage two dimensional character point set and the benchmark two dimensional character point set are matched, the damage two dimension is obtained
The matching relationship for the two-dimensional points that two-dimensional points and the benchmark two dimensional character point in feature point set are concentrated；
Reference three-dimensional point of the benchmark two dimensional character point set in the reference three-dimensional model is obtained to converge；
Based on the matching relationship, the damage two dimensional character point set is converged with the reference three-dimensional point carry out it is corresponding,
The corresponding damage three-dimensional point of the damage two dimensional character point set is obtained to converge；
The reference three-dimensional point is converged to converge with the damage three-dimensional point and is compared, the damage of the damage front is obtained
Hurt eigenmatrix.
Optionally, described that lesion assessment is carried out to the target phased array antenna based on the damage characteristic matrix, it obtains
The damage results of the target phased array antenna include:
By the damage characteristic Input matrix to preset lesion assessment model, the damage of the target phased array antenna is obtained
Hurt result.
Optionally, mathematical notation of the lesion assessment model in xyz space coordinates are as follows:
Wherein,Indicate the array factor of target phased array antenna, SnmIndicate the target phased array antenna of N × M
Damage characteristic matrix,Indicate that the radiation field intensity of each array element in target phased array antenna, θ indicate far-field radiation direction and xyz
The angle in z-axis direction in space coordinates,The projection for indicating far-field radiation direction and x-axis direction in xyz space coordinates
Angle, wherein n, m are the positive integer greater than 0,1≤n≤N, 1≤m≤M.
The second aspect of the embodiment of the present invention provides a kind of damage detection apparatus of phased array antenna, the damage check
Device, comprising:
Acquiring unit, the corresponding damage two dimensional image of damage front for obtaining target phased array antenna；
Visual angle matching unit, for the damage two dimensional image and preset reference three-dimensional model to be carried out visual angle matching,
To determine benchmark two dimensional image corresponding with the damage two dimensional image, wherein the reference three-dimensional model is based on the mesh
Mark the corresponding benchmark phased array antenna building of phased array antenna；
Comparing unit, for the damage two dimensional image compared with the benchmark two dimensional image carries out feature, to be obtained institute
State the damage characteristic matrix of damage front.
The third aspect of the embodiment of the present invention provides a kind of terminal, including memory, processor and is stored in described
In memory and the computer program that can run on the processor, the processor are realized when executing the computer program
As described in any one the step of the damage detecting method of phased array antenna as described in any one of 1 to 7.
The fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer program, realizes any one of 1 to 7 as described in any one when the computer program is executed by processor
The step of damage detecting method of the phased array antenna.
Existing beneficial effect is the present invention compared with prior art:
The present invention damages two for described by the corresponding damage two dimensional image of damage front of acquisition target phased array antenna
It ties up image and preset reference three-dimensional model carries out visual angle matching, determine benchmark two dimensional image corresponding with damage two dimensional image,
The target two dimensional image is compared with the benchmark two dimensional image, obtains the MODEL DAMAGE of the target phased array antenna
Matrix can accurately determine the number and location that array element is damaged in target phased array antenna by MODEL DAMAGE matrix, can
Accurately and efficiently judge the degree of impairment of phased array antenna；Using preset reference threedimensional model, when detection, need to only obtain damage two
Dimension image can be obtained by benchmark two dimensional image, reduce the time of damage check, and therefore, the present invention can be assessment target phase
It controls the degree of injury of array antenna and formulates correcting strategy and accurate foundation is provided.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the implementation flow chart of the damage detecting method of phased array antenna provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides phased array antenna damage detecting method implementation flow chart；
Fig. 3 is the matching signal of benchmark two dimensional character point set provided in an embodiment of the present invention and damage two dimensional character point set
Figure；
Fig. 4 is benchmark two dimensional image schematic diagram provided in an embodiment of the present invention；
Fig. 5 is damage two dimensional image schematic diagram provided in an embodiment of the present invention；
Fig. 6 is reference three-dimensional model schematic provided in an embodiment of the present invention；
Fig. 7 is damage threedimensional model schematic diagram provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of the damage detection apparatus of phased array antenna provided in an embodiment of the present invention；
Fig. 9 is the schematic diagram of the damage detection apparatus another embodiment of the present invention provides phased array antenna；
Figure 10 is the schematic diagram for the damage detection apparatus that yet another embodiment of the invention provides phased array antenna；
Figure 11 is the schematic diagram of terminal provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
To make the object, technical solutions and advantages of the present invention clearer, pass through specific embodiment below in conjunction with attached drawing
To be illustrated.
Referring to Fig. 1, it illustrates the implementation processes of the damage detecting method of phased array antenna provided in an embodiment of the present invention
Figure, details are as follows:
As shown in Figure 1, the damage detecting method includes:
S101: the corresponding damage two dimensional image of damage front of target phased array antenna is obtained；
In embodiments of the present invention, the damage front of the target phased array antenna of available any angle shooting is corresponding
Damage two dimensional image.
S102: carrying out visual angle matching for the damage two dimensional image and preset reference three-dimensional model, with it is determining with it is described
Damage the corresponding benchmark two dimensional image of two dimensional image, wherein the reference three-dimensional model is based on the target phased array antenna
Corresponding benchmark phased array antenna building；
In embodiments of the present invention, benchmark phased array antenna is shot using multi-angle of view camera and obtains multi-angle of view benchmark two dimension
Image constructs reference three-dimensional model, benchmark phased array day by multi-angle of view benchmark two dimensional image by multi-view image coherent technique
Line is the phased array antenna of serviceable condition.
Multi-angle of view benchmark two dimensional image is based on multi-view image coherent technique, by the feature extraction of image, characteristic matching
With the processes such as camera calibration, the reference three-dimensional point cloud of benchmark phased array antenna, the reference three-dimensional point cloud passing point cloud triangle are obtained
The process that shape gridding and point cloud are rebuild, obtains reference three-dimensional model.
Reference three-dimensional point cloud obtains accurately reference three-dimensional model after carrying out three-dimensional reconstruction again after triangle gridding.
Visual angle matching is carried out by damage two dimensional image and reference three-dimensional model, obtains base corresponding with damage two dimensional image
Quasi- two dimensional image, when which is building reference three-dimensional model, the multi-angle of view benchmark two dimension of multi-angle of view camera shooting
Width two dimensional image therein in image.
S103: by the damage two dimensional image compared with the benchmark two dimensional image carries out feature, the damage battle array is obtained
The damage characteristic matrix in face.
In embodiments of the present invention, damage two dimensional image is compared with benchmark two dimensional image, obtains damage phased array
What the damage characteristic matrix of antenna, damage two dimensional image and benchmark two dimensional image included is the information of Same Scene.
Two dimensional image will be damaged compared with benchmark two dimensional image carries out feature, obtain the corresponding damage three of damage two dimensional image
Dimension point converges and the corresponding reference three-dimensional point of benchmark two dimensional image converges, and converges and damage three-dimensional point cloud for reference three-dimensional point
Collection is compared, and obtains the damage characteristic matrix of damage front.
The corresponding damage two dimensional image of the damage front of the target phased array antenna of acquisition can be only phased comprising target
The damage two dimensional image that array antenna front is had damage, correspondingly, obtained damage three-dimensional point is converged only comprising damage two dimensional image
Three-dimensional point, the damage threedimensional model of the damage phased array antenna after three-dimensional reconstruction can be only comprising in reference three-dimensional model
Partial model.Therefore, the damage X-Y scheme under corresponding visual angle can be obtained according to the position for the damage phased array antenna to be detected
Picture enhances the specific aim of detection, improves the efficiency of detection.
From the foregoing, it will be observed that threedimensional model of the present invention by preset reference, when to damage phased array antenna detection, it is only necessary to
The corresponding damage two dimensional image of damage front of target phased array antenna is obtained, operating procedure is simple, and saves detection time.Again
Visual angle matching is carried out by damage two dimensional image and preset reference three-dimensional model, determines benchmark corresponding with damage two dimensional image
Two dimensional image, then damage two dimensional image is compared with benchmark two dimensional image, the damage characteristic matrix of damage front is obtained, and
The damage characteristic matrix includes the damage position and quantity information of the array element of damage phased array antenna, passes through the damage characteristic matrix
It can accurately judge the position of array element damage, therefore, the application can accurately and efficiently judge that target phased array antenna is damaged
The case where hurting provides accurate foundation for the degree of injury and formulation correcting strategy of assessment damage phased array antenna.
Referring to fig. 2, it illustrates another embodiment of the present invention provides phased array antenna damage detecting method realization
Flow chart, details are as follows:
S203: the corresponding damage two dimensional image of damage front of target phased array antenna is obtained；
S204: carrying out visual angle matching for the damage two dimensional image and preset reference three-dimensional model, with it is determining with it is described
Damage the corresponding benchmark two dimensional image of two dimensional image, wherein the reference three-dimensional model is based on the target phased array antenna
Corresponding benchmark phased array antenna building；
S205: by the damage two dimensional image compared with the benchmark two dimensional image carries out feature, the damage battle array is obtained
The damage characteristic matrix in face；
Above-mentioned steps S203, step 204 and step 205 can refer to the step S101 in embodiment illustrated in fig. 1 to step
S103, therefore not to repeat here.
S201: the two dimensional image under multiple and different visual angles of benchmark phased array antenna is obtained；
S202: based on the two dimensional image under the multiple different perspectives, the benchmark three of the benchmark phased array antenna is constructed
Dimension module.
In embodiments of the present invention, the benchmark two dimensional image of the benchmark phased array antenna of multi-angle of view camera shooting is based on more views
Angle image coherent technique can obtain benchmark phased array by processes such as the feature extraction of image, characteristic matching and camera calibrations
The process that the reference three-dimensional point cloud of antenna, the reference three-dimensional point cloud passing point cloud triangular grid and point cloud are rebuild, obtains base
Quasi-three-dimensional model.
After obtaining reference three-dimensional point cloud, the grid model of the triangle subdivision of benchmark phased array antenna front can be established.
The process of triangular grid is carried out to reference three-dimensional point cloud are as follows: the state of all the points in reference three-dimensional point cloud is all set first
For free state, forward position side storehouse is constructed, next the place construction seed triangle flat in reference three-dimensional point cloud, it will
These seed triangles in storehouse, when then popping up one in storehouse from forward position, are with this side when being put into forward position entirely
One spheric region of center construction, the state of the point of this spheric region is exactly candidate state, is waited by feature principle from these
Select a neighbor point and forward position side in reconnaissance and construct triangle, then by triangle remove forward position while other two while be put into
In the storehouse of forward position side, and it is changed to the state of neighbor point to have received state.Make when then popping up new in storehouse from forward position
For forward position side, according to before the step of rebuild triangle, when forward position side storehouse is empty, the three of reference three-dimensional point cloud
Angle gridding is completed.It, can to the three-dimensional reconstruction for carrying out reference three-dimensional point cloud after reference three-dimensional point cloud progress triangular grid again
Accurately to obtain the reference three-dimensional model of benchmark phased array antenna.
From the foregoing, it will be observed that the benchmark two dimensional image under multi-angle of view of the present invention by obtaining benchmark phased array antenna, using more
Multi-view image coherent technique obtains the three-dimensional point cloud of benchmark phased array antenna, by the three-dimensional point cloud of benchmark phased array antenna through three
Hexagonal lattice accurately can carry out point Yun Chongjian to benchmark phased array antenna, rebuild through cloud and obtain accurate benchmark phase
The reference three-dimensional model of array antenna is controlled, provides effective guarantee to obtain the damage characteristic matrix of damage front.
Optionally, after the damage characteristic matrix for obtaining the damage front, further includes:
Lesion assessment is carried out to the target phased array antenna based on the damage characteristic matrix, it is phased to obtain the target
The damage results of array antenna.
It in embodiments of the present invention, can be by obtained damage characteristic matrix application to the assessment to target phased array antenna
In model, the damage damage position of front of target phased array antenna and quantitative to target phased array can accurately be obtained
Antenna carries out quick performance assessment, provides effective reference for the rapid rush-repair and recovery fighting efficiency of the phased array antenna to damage
And technical support.
Referring to Fig. 3, it illustrates benchmark two dimensional character point sets provided in an embodiment of the present invention and damage two dimensional character point set
Matching schematic diagram, details are as follows:
It is described that the damage two dimensional image and preset reference three-dimensional model are subjected to visual angle matching, with the determining and damage
Hurting the corresponding benchmark two dimensional image of two dimensional image includes:
The visual angle of the reference three-dimensional model is adjusted to aspect, so that the reference three-dimensional model is regarded in the target
The similarity of corresponding two dimensional image and the damage two dimensional image is greater than specified similarity threshold under angle；
By the reference three-dimensional model, corresponding two dimensional image is determined as and the damage two dimension under the aspect
The corresponding benchmark two dimensional image of image.
In embodiments of the present invention, by adjusting the visual angle of reference three-dimensional model, determine in reference three-dimensional model with damage
Two dimensional character point centrostigma has the feature locations of maximum similar features, and then obtains benchmark two dimensional image, by benchmark two
The benchmark two dimensional character point set and damage two dimensional character point set for tieing up image are matched, and determine base corresponding with damage two dimensional image
Quasi- two dimensional image.Wherein, benchmark two dimensional character point set and damage two dimensional character point set are matched, is determined and damage X-Y scheme
As the process of corresponding benchmark two dimensional image is as follows:
The damage two dimensional character point set of the damage two dimensional image of acquisition is denoted as { ai, benchmark two dimensional character point set is denoted as { bj,
Wherein i, j are positive integer；As shown in figure 3, the point a in two dimensional image will be damagediCentered on find divide certain area correlation
Window 1, with b in benchmark two dimensional imagejCentered on divide the associated window 2 of same area range, to damage two dimension in matching process
Each characteristic point is that reference point presses characteristic point sequential search in benchmark image in image, carries out associated window matching, matching can be with
Region is specified search for, range can be specifically designated according to priori knowledge, be equivalent to and scheme the region of search of corresponding points from entire
Window as being reduced to a given size, reduces amount of calculation；
Using normalized crosscorrelation method, similarity R is calculatedij,
Wherein,It is the average value of all pixels gray value in correlation window, ai(x, y) is in damage two dimensional image
With i-th point of gray value in the associated window comprising (2m+1) a point, bi(x, y) is in benchmark two dimensional image to include (2m+1)
The gray value of jth point in the associated window of a point, m is positive integer.
Similarity Rij, indicate in damage two dimensional image, with aiCentered on associated window and benchmark two dimensional image in bjFor
The Gray Correlation of the associated window at center, the present invention use normalized crosscorrelation method, similarity RijValue range be (- 1 ,+
1), if similarity Rij=+1, show that two correlation windows are identical, when being matched, sets a dependent thresholds, if
Maximum similarity RijLess than this threshold value, then it is assumed that be to mismatch a little, be removed.Damage two dimensional image midpoint a is found as a result,iWith
The maximum point b of similarity in benchmark two dimensional imagej, utilize same steps, search damage two dimensional image midpoint ai+1Benchmark two dimension
Corresponding points in image；
If the point for not finding in selected benchmark two dimensional image and meeting similarity requirement in damage two dimensional image, is adjusted
Another feature position of reference three-dimensional model is chosen at the visual angle of integral basis quasi-three-dimensional model, carries out aforesaid operations.
The present invention can be by adjusting the visual angle of reference three-dimensional model, and determining has maximum similar spy to damage two dimensional image
The benchmark two dimensional image of sign determines benchmark two dimensional image corresponding with damage two dimensional image by similarity calculation.
Referring to fig. 4, it illustrates benchmark two dimensional image schematic diagrames provided in an embodiment of the present invention；Referring to Fig. 5, it illustrates
Damage two dimensional image schematic diagram provided in an embodiment of the present invention, details are as follows:
It is described by the damage two dimensional image with the benchmark two dimensional image carry out feature compared with, obtain the damage front
Damage characteristic matrix include:
Obtain the damage two dimensional character point set of the damage two dimensional image；
Obtain the benchmark two dimensional character point set of the benchmark two dimensional image；
The damage two dimensional character point set and the benchmark two dimensional character point set are matched, the damage two dimension is obtained
The matching relationship for the two-dimensional points that two-dimensional points and the benchmark two dimensional character point in feature point set are concentrated；
Reference three-dimensional point of the benchmark two dimensional character point set in the reference three-dimensional model is obtained to converge；
Based on the matching relationship, the damage two dimensional character point set is converged with the reference three-dimensional point carry out it is corresponding,
The corresponding damage three-dimensional point of the damage two dimensional character point set is obtained to converge；
The reference three-dimensional point is converged to converge with the damage three-dimensional point and is compared, the damage of the damage front is obtained
Hurt eigenmatrix.
In embodiments of the present invention, the corresponding reference three-dimensional point of benchmark two dimensional character point set { bj }, which converges, is denoted as { Bj }, will
Damage the damage two dimensional character point set { a of two dimensional imageiMatched with benchmark two dimensional character point set { bj }, it obtains matching and closes
System will damage two dimensional character point set { a by matching relationshipiConverge { Bj } with reference three-dimensional point and carry out corresponding, obtain damage three
Dimension point converges { Ai, reference three-dimensional point is converged into { Bj } and damage three-dimensional point converges { AiTriangle gridding and three-dimensional modeling are carried out,
Obtain reference three-dimensional Model B ' and damage threedimensional model A'.By comparing reference three-dimensional Model B ' and damage threedimensional model A' in battle array
The quantity of member, the damage characteristic matrix S of available damage frontn×m。
Benchmark two dimensional image schematic diagram and damage two dimensional image schematic diagram as shown in Figure 4 and Figure 5, corresponds to 7 × 14
Damage characteristic model S is
Wherein, 1 indicate that the array element is not damaged, 0 indicates array element damage.
Optionally, described that lesion assessment is carried out to the target phased array antenna based on the damage characteristic matrix, it obtains
The damage results of the target phased array antenna include:
By the damage characteristic Input matrix to preset lesion assessment model, the damage of the target phased array antenna is obtained
Hurt result.
In embodiments of the present invention, preset lesion assessment model is to be assessed the damage performance of phased array antenna
Model, by obtained damage characteristic Input matrix into preset lesion assessment model, can quantitatively to damage characteristic matrix
Corresponding target phased array antenna carries out lesion assessment, can also accurately obtain the specific location of damage array element, to assess mesh
It marks the degree of injury of phased array antenna and formulates correcting strategy and accurate foundation is provided.
Referring to Fig. 6, it illustrates reference three-dimensional model schematics provided in an embodiment of the present invention；Referring to Fig. 7, it illustrates
Damage threedimensional model schematic diagram provided in an embodiment of the present invention, details are as follows:
Mathematical notation of the lesion assessment model in xyz space coordinates are as follows:
Wherein,Indicate the array factor of target phased array antenna, SnmIndicate the target phased array antenna of N × M
Damage characteristic matrix,Indicate that the radiation field intensity of each array element in target phased array antenna, θ indicate far-field radiation direction and xyz
The angle in z-axis direction in space coordinates,The projection for indicating far-field radiation direction and x-axis direction in xyz space coordinates
Angle, wherein n, m are the positive integer greater than 0,1≤n≤N, 1≤m≤M.
In embodiments of the present invention, the radiation characteristic of phased array antenna is by pattern functionIt indicates, and directional diagram
Function is being left at antenna distance, radiation field in space with the function of angle change,Referred to as element factor indicates
The radiation characteristic of single array element.Only it is related with the type of phased array antenna and spatial orientation, and with the arrangement mode of antenna array without
It closes.Array factorIt is unrelated with the array element of antenna, only have with the mutual alignment of bay, the size of feed current and phase
It closes, according to pattern multiplication principle, when element factor is 1, the radiation that array factor can be used for stating phased-array antenna array is special
Property.The schematic diagram of reference three-dimensional model as shown in Figure 6.
Array element is arranged on x/y plane by rectangular grid, has N array member, cell spacing d in x-axis directionx.In y-axis side
To having M array element, cell spacing dy.The angle of far-field radiation direction and z-axis is θ, and projection and the angle of x-axis areAnd
Since the array element in front is constant amplitude with phase, the electric current I in single array elementnm=1, the array element phase at all array elements and (1,1)
Potential difference is that 0, k is Boltzmann constant, the array factor of front are as follows:
It is indicated with variable u, v, w:W=cos θ.
A simplified formula of front array factor can be obtained:
When element failure, SnmIt is 0, thenIn be not superimposed the radiation field intensity of corresponding array element；When array element is intact, then
SnmIt is 1,It is superimposed the radiation field intensity of corresponding entry,
Array factor can be used following formula to indicate after being then damaged phased array antenna part element failure:
Specifically, when scan angle is 0 °, the damage characteristic matrix of acquisition is that array element is random by taking 16 × 16 fronts as an example
Fail 30 percent the case where, at this time front failure array element position it is as follows.
Damage characteristic matrix indicates the position of failure array element after 30 percent element failure, and failure array element sum is 77,
As can be seen that failure element position distribution is very random, and the failure array element close to front center is more.
Following table 1 is 30 percent random element failure and the intact parameter comparison of front, damages each of phased array antenna
Performance indicator can be gain, orientation half power lobe width, pitching to half power lobe width, orientation minor level
With pitching to minor level.
The random element failure of table 1 30 percent and the intact parameter comparison of front
In embodiments of the present invention, the performance parameter for damaging phased array antenna quantitatively can be obtained, is accurately damaged
Hurt the position of the front damage array element of phased array antenna, to assess the degree of injury of target phased array antenna and formulating correcting strategy
Provide accurate foundation.
Referring to Fig. 8, it illustrates the schematic diagrames of the damage detection apparatus of phased array antenna provided in an embodiment of the present invention, in detail
It states as follows:
As shown in figure 8, damage detection apparatus 8, comprising:
First acquisition unit 81, the corresponding damage two dimensional image of damage front for obtaining target phased array antenna；
First visual angle matching unit 82, for the damage two dimensional image and preset reference three-dimensional model to be carried out visual angle
Matching, to determine benchmark two dimensional image corresponding with the damage two dimensional image, wherein the reference three-dimensional model is based on institute
State the corresponding benchmark phased array antenna building of target phased array antenna；
First comparing unit 83 is used for by the damage two dimensional image compared with the benchmark two dimensional image carries out feature,
Obtain the damage characteristic matrix of the damage front.
Optionally, on the basis of embodiment shown in Fig. 8, referring to Fig. 9, it illustrates another embodiment of the present invention provides
The schematic diagram of the damage detection apparatus of phased array antenna, details are as follows:
As shown in figure 9, damage detection apparatus 8 further include:
Second acquisition unit 84, for the damage two dimensional image and preset reference three-dimensional model to be carried out visual angle
With the two dimensional image under the multiple and different visual angles for obtaining benchmark phased array antenna before；
Construction unit 85, for constructing benchmark phased array day based on the two dimensional image under the multiple different perspectives
The reference three-dimensional model of line.
Optionally, on the basis of embodiment shown in Fig. 8, referring to Figure 10, it illustrates yet another embodiment of the invention offers
Phased array antenna damage detection apparatus schematic diagram, details are as follows:
As shown in Figure 10, damage detection apparatus 8 further include:
Assessment unit 86, for being based on the damage after the damage characteristic matrix for obtaining the damage front
Eigenmatrix carries out lesion assessment to the target phased array antenna, obtains the damage results of the target phased array antenna.
Optionally, first time matching unit 82 is specifically used for:
The visual angle of the reference three-dimensional model is adjusted to aspect, so that the reference three-dimensional model is regarded in the target
The similarity of corresponding two dimensional image and the damage two dimensional image is greater than specified similarity threshold under angle；
By the reference three-dimensional model, corresponding two dimensional image is determined as and the damage two dimension under the aspect
The corresponding benchmark two dimensional image of image.
Optionally, the first comparing unit 83 is specifically used for:
Obtain the damage two dimensional character point set of the damage two dimensional image；
Obtain the benchmark two dimensional character point set of the benchmark two dimensional image；
The damage two dimensional character point set and the benchmark two dimensional character point set are matched, the damage two dimension is obtained
The matching relationship for the two-dimensional points that two-dimensional points and the benchmark two dimensional character point in feature point set are concentrated；
Reference three-dimensional point of the benchmark two dimensional character point set in the reference three-dimensional model is obtained to converge；
Based on the matching relationship, the damage two dimensional character point set is converged with the reference three-dimensional point carry out it is corresponding,
The corresponding damage three-dimensional point of the damage two dimensional character point set is obtained to converge；
The reference three-dimensional point is converged to converge with the damage three-dimensional point and is compared, the damage of the damage front is obtained
Hurt eigenmatrix.
Optionally, assessment unit 86 is specifically used for:
By the damage characteristic Input matrix to preset lesion assessment model, the damage of the target phased array antenna is obtained
Hurt result.
Optionally, assessment unit 86 is specifically also used to:
Mathematical notation of the lesion assessment model in xyz space coordinates are as follows:
Wherein,Indicate the array factor of target phased array antenna, SnmIndicate the target phased array antenna of N × M
Damage characteristic matrix,Indicate that the radiation field intensity of each array element in target phased array antenna, θ indicate far-field radiation direction and xyz
The angle in z-axis direction in space coordinates,The projection for indicating far-field radiation direction and x-axis direction in xyz space coordinates
Angle, wherein n, m are the positive integer greater than 0,1≤n≤N, 1≤m≤M.
In embodiments of the present invention, it is made up of first acquisition unit, the first visual angle matching unit and the first comparing unit
Phased array antenna damage detection apparatus, can accurately and efficiently judge target phased array antenna damage position, for assessment damage
Hurt the degree of injury of phased array antenna and formulate correcting strategy and provides accurate foundation.
Referring to Figure 11, it illustrates the schematic diagrames of terminal provided in an embodiment of the present invention.Details are as follows:
As shown in figure 11, terminal 11, including memory 111, processor 110 and be stored in memory 111 and can be
The computer program 112 run on processor 110, processor 110 are realized described in any one as above when executing computer program 112
The step of damage detecting method of phased array antenna.
In embodiments of the present invention, above-mentioned each phased array antenna is realized when processor 110 executes computer program 112
Step in damage detecting method embodiment, such as step 101 shown in FIG. 1 is to step 103.Alternatively, processor 110 executes meter
The function of each module/unit in above-mentioned each Installation practice is realized when calculation machine program 112.
It should be appreciated that in embodiments of the present invention, alleged processor 110 can be central processing unit (Central
Processing Unit, CPU), which can also be other general processors, digital signal processor (Digital
Signal Processor, DSP), specific integrated circuit (Application Specific Integrated Circuit,
ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic
Device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or this at
Reason device is also possible to any conventional processor etc..
The memory 111 may include read-only memory and random access memory, and to processor 110 provide instruction and
Data.The a part of of memory 111 can also include nonvolatile RAM.For example, memory can also store
The information of device type.
Illustratively, computer program 112 can be divided into one or more module/units, one or more mould
Block/unit is stored in the memory, and is executed by processor 110, to complete the present invention.Said one or multiple moulds
Block/unit can be the series of computation machine program instruction section that can complete specific function, the instruction segment by describe it is above-mentioned based on
Implementation procedure of the calculation machine program in the terminal.
The fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer program 112, realizes that as above any one is described phased when computer program 112 is executed by processor 110
The damage detecting method step of array antenna.
Computer-readable recording medium storage has computer program 112, and computer program 112 includes program instruction, program
The all or part of the process in above-described embodiment method is realized when instruction is executed by processor 110, can also pass through computer journey
Sequence 112 is completed to instruct relevant hardware, and computer program 112 can be stored in a computer readable storage medium, the meter
Calculation machine program 112 by processor 110 when being executed, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, computer program
112 include computer program code, and computer program code can be source code form, object identification code form, executable file
Or certain intermediate forms etc..Computer-readable medium may include: any entity or dress that can carry computer program code
It sets, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software
Distribution medium etc..It should be noted that computer-readable medium include content can according in jurisdiction legislation and specially
The requirement of benefit practice carries out increase and decrease appropriate, such as in certain jurisdictions, computer-readable according to legislation and patent practice
Medium do not include be electric carrier signal and telecommunication signal.
Computer readable storage medium can be the internal storage unit of the terminal of aforementioned any embodiment, such as terminal
Hard disk or memory.Computer readable storage medium is also possible to the External memory equipment of terminal, such as the grafting being equipped in terminal
Formula hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card
(Flash Card) etc..Further, computer readable storage medium can also both include the internal storage unit of terminal or wrap
Include External memory equipment.Computer readable storage medium is for storing other program sum numbers needed for computer program and terminal
According to.Computer readable storage medium can be also used for temporarily storing the data that has exported or will export.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of damage detecting method of phased array antenna, which is characterized in that the damage detecting method includes:
Obtain the corresponding damage two dimensional image of damage front of target phased array antenna；
The damage two dimensional image and preset reference three-dimensional model are subjected to visual angle matching, with the determining and damage X-Y scheme
As corresponding benchmark two dimensional image, wherein the reference three-dimensional model is based on the corresponding benchmark of the target phased array antenna
Phased array antenna building；
By the damage two dimensional image compared with the benchmark two dimensional image carries out feature, the damage for obtaining the damage front is special
Levy matrix.
2. the damage detecting method of phased array antenna according to claim 1, which is characterized in that the damage is two-dimentional
Image and preset reference three-dimensional model carry out before the matching of visual angle further include:
Obtain the two dimensional image under multiple and different visual angles of benchmark phased array antenna；
Based on the two dimensional image under the multiple different perspectives, the reference three-dimensional model of the benchmark phased array antenna is constructed.
3. the damage detecting method of phased array antenna according to claim 1, which is characterized in that obtain the damage described
After hurting the damage characteristic matrix of front, further includes:
Lesion assessment is carried out to the target phased array antenna based on the damage characteristic matrix, obtains target phased array day
The damage results of line.
4. the damage detecting method of phased array antenna according to any one of claims 1 to 3, which is characterized in that described to incite somebody to action
The damage two dimensional image and preset reference three-dimensional model carry out visual angle matching, corresponding with the damage two dimensional image with determination
Benchmark two dimensional image include:
The visual angle of the reference three-dimensional model is adjusted to aspect, so that the reference three-dimensional model is under the aspect
The similarity of corresponding two dimensional image and the damage two dimensional image is greater than specified similarity threshold；
By the reference three-dimensional model, corresponding two dimensional image is determined as and the damage two dimensional image under the aspect
Corresponding benchmark two dimensional image.
5. the damage detecting method of phased array antenna according to claim 4, which is characterized in that described by the damage two
Image is tieed up compared with the benchmark two dimensional image carries out feature, the damage characteristic matrix for obtaining the damage front includes:
Obtain the damage two dimensional character point set of the damage two dimensional image；
Obtain the benchmark two dimensional character point set of the benchmark two dimensional image；
The damage two dimensional character point set and the benchmark two dimensional character point set are matched, the damage two dimensional character is obtained
The matching relationship for the two-dimensional points that the two-dimensional points and the benchmark two dimensional character point that point is concentrated are concentrated；
Reference three-dimensional point of the benchmark two dimensional character point set in the reference three-dimensional model is obtained to converge；
Based on the matching relationship, the damage two dimensional character point set is converged with the reference three-dimensional point and carries out corresponding, is obtained
The corresponding damage three-dimensional point of the damage two dimensional character point set is converged；
The reference three-dimensional point is converged to converge with the damage three-dimensional point and is compared, the damage for obtaining the damage front is special
Levy matrix.
6. the damage detecting method of phased array antenna according to claim 3, which is characterized in that described to be based on the damage
Eigenmatrix carries out lesion assessment to the target phased array antenna, obtains the damage results packet of the target phased array antenna
It includes:
By the damage characteristic Input matrix to preset lesion assessment model, the damage knot of the target phased array antenna is obtained
Fruit.
7. the damage detecting method of phased array antenna according to claim 6, which is characterized in that the lesion assessment model
Mathematical notation in xyz space coordinates are as follows:
Wherein,Indicate the array factor of target phased array antenna, SnmIndicate that the damage of the target phased array antenna of N × M is special
Matrix is levied,Indicate that the radiation field intensity of each array element in target phased array antenna, θ indicate that far-field radiation direction and the space xyz are sat
The angle in z-axis direction in mark system,Indicate projection and the angle of x-axis direction in xyz space coordinates in far-field radiation direction,
In, n, m are the positive integer greater than 0,1≤n≤N, 1≤m≤M.
8. a kind of damage detection apparatus of phased array antenna, which is characterized in that the damage detection apparatus, comprising:
Acquiring unit, the corresponding damage two dimensional image of damage front for obtaining target phased array antenna；
Visual angle matching unit, for the damage two dimensional image and preset reference three-dimensional model to be carried out visual angle matching, with true
Fixed benchmark two dimensional image corresponding with the damage two dimensional image, wherein the reference three-dimensional model is based on the target phase
Control the corresponding benchmark phased array antenna building of array antenna；
Comparing unit, for the damage two dimensional image compared with the benchmark two dimensional image carries out feature, to be obtained the damage
Hurt the damage characteristic matrix of front.
9. a kind of terminal, including memory, processor and storage can be run in the memory and on the processor
Computer program, which is characterized in that the processor is realized any in claim 1 to 7 when executing the computer program
The step of damage detecting method of the item phased array antenna.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In the computer program realizes phased array antenna described in any one of claims 1 to 7 as above when being executed by processor
The step of damage detecting method.
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