CN107331975A - A kind of L-shaped submatrix group battle array method and antenna array based on multiple spot anticipation - Google Patents
A kind of L-shaped submatrix group battle array method and antenna array based on multiple spot anticipation Download PDFInfo
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- CN107331975A CN107331975A CN201710487353.2A CN201710487353A CN107331975A CN 107331975 A CN107331975 A CN 107331975A CN 201710487353 A CN201710487353 A CN 201710487353A CN 107331975 A CN107331975 A CN 107331975A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays
Abstract
The invention discloses a kind of L-shaped submatrix group battle array method based on multiple spot anticipation and antenna array, by the two-dimentional AESA internal antenna cell abstract of target into filling point；Select next filling point, random selection L-shaped submatrix form is filled, attachment point around the L-shaped submatrix currently filled and lower n, which are walked, needs the point filled to be classified as anticipation point set, randomly choose L-shaped submatrix form pre-filled to the progress of anticipation point set, next step filling is carried out if being combined in the presence of the L-shaped submatrix that anticipation point set can be completely covered, otherwise judge that the filling mode of current L-shaped submatrix is invalid, reselect；After the completion of group battle array, it is determined that currently whether group battle array mode meets system requirements.The present invention judges whether the L-shaped submatrix state currently filled is suitable, improves charging efficiency and success rate with the attachment point of L-shaped submatrix with the lower n anticipation point sets for walking point composition to be filled.The active channel of random distribution effectively inhibits directional diagram graing lobe, reduces the noise jamming of radar system.
Description
Technical field
The present invention relates to a kind of array antenna technique, more particularly to a kind of L-shaped submatrix group battle array based on multiple spot anticipation
Method and antenna array.
Background technology
With developing rapidly for modern phased array radar technology, radar surveillance scope is constantly increasing with detection range, thunder
Develop that (electric size is antenna physical size relative to work frequency up to system requirements active phase array antenna to the direction of electrically large sizes
The size of rate wavelength) to improve the systematic functions such as radar resolution, power.Although phased with development in science and technology and technique progress
Although the cost of battle array radar, which has, significantly declines, but still makes us forbidding,.How phased array antenna performance is not being influenceed
On the premise of make active channel rarefaction, reducing huge equipment and its power consumption becomes the problem for needing to solve.
In more phased array radar system is used at present, form (square battle array, rectangle of the antenna array frequently with planar array
Battle array, circle etc.), traditional method of structuring the formation is full battle array arrangement, i.e., being smaller than between antenna element can not scan graing lobe
Distance, each antenna element is fed by an active channel.Active channel function is complicated, and manufacturing process difficulty is big, and yield rate is low,
The Connectors for Active Phased Array Radar system cost of enormous proportions is occupied, when array scale is larger, it is desirable to reduce active channel, control
System cost.The method of conventional active channel rarefaction has：Limited field scanning, Sparse Array, Subarray feed, irregular son
Battle array etc..Limited field scanning is to increase the spacing between antenna element by sacrificing the scan capability of antenna array to reach sparse have
The purpose of source channels, the method often needs the auxiliary of mechanical scanning, and application is narrow；Sparse Array is then by the way that antenna element is entered
Arranged after row certain proportion rarefaction in antenna array according to certain arrangement mode, the method can the sparse day of vast scale
Line unit and active channel number, and effectively suppress scanning graing lobe, but Sparse Array design difficulty is big, and it is sparse after antenna array
Assembling, positioning difficulty are big；Subarray feed is effectively reduced active channel number, but periodic arrangement can cause directional diagram raster
Valve；Sparse active channel can also be realized by breaking Subarray periodic arrangement with irregular subarray, suppress scanning graing lobe, but not
Regular submatrix composition difficulty is big, when being designed for large-scale two-dimentional AESA, it is impossible to by manually splicing completion group battle array,
It is also bad in engineering to realize.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of L-shaped submatrix group based on multiple spot anticipation
Battle array method and antenna array, can effectively inhibit directional diagram graing lobe.
The present invention is achieved by the following technical solutions, and the present invention comprises the following steps：
(1) M × N number of antenna element included in the two-dimentional AESA of target is abstracted into M × N number of filling point；
(2) according to agreement fill order, anticipation points n and the L-shaped submatrix type used, next filling point is selected, with
Machine selection L-shaped submatrix form is filled, and the submatrix for meeting and having been filled with is not covered mutually；
(3) walking the attachment point around the L-shaped submatrix currently filled and lower n needs the point filled to be classified as anticipation point set, with
It is pre-filled that machine selects L-shaped submatrix form to carry out anticipation point set, if being combined in the presence of the L-shaped submatrix that anticipation point set can be completely covered
Next step filling is then carried out, otherwise judges that the filling mode of current L-shaped submatrix is invalid, reselects a kind of L-shaped submatrix form and enter
Row filling；
(5) after the completion of group battle array, its direction of an electric field figure is calculated according to far field calculation formula, it is determined that currently whether group battle array mode is full
Pedal system requirement, is such as unsatisfactory for, return to step (2) is refilled.
One of preferred embodiment as the present invention, the type of the L-shaped submatrix includes 4 unit L-shaped submatrixs and unit 8 L-shaped
Submatrix.
One of preferred embodiment as the present invention, the L-shaped of Unit 4 submatrix and unit 8 the L-shaped submatrix has eight kinds of shapes respectively
State, passed sequentially through respectively by the corresponding L-shaped of Unit 4 submatrix and unit 8 L-shaped submatrix be rotated by 90 °, 180 °, 270 °, mirror image put english turn
90 °, 180 °, 270 ° obtain.
One of preferred embodiment as the present invention, the fill order is：The filling point is from top to bottom along multiple zigzags
It is sequentially filled.
One of preferred embodiment as the present invention, the fill order is：The filling point is from top to bottom along multiple bow words
Shape is sequentially filled.
One of preferred embodiment as the present invention, the fill order is：The filling point from inside to outside along helicoid according to
Secondary filling.
The single L-shaped submatrix of Unit 4 has 14 attachment points to be closely distributed in around it, and single unit 8 L-shaped submatrix has
18 attachment points are closely distributed in around it, after the completion of step (3), and attachment point is substituted into target array, are removed and are walked weight with lower n
After the attachment point of conjunction, choosing remaining attachment point and being walked with lower n needs the point filled to be used as anticipation point set.Described attachment point is tight
The point of adjacent submatrix.
One of preferred embodiment as the present invention, the anticipation point concentrates the lower n steps included to need the point filled, its n's
It is worth for any integer more than 1.
A kind of antenna array, the antenna array is made up of the L-shaped submatrix group battle array method based on multiple spot anticipation.
A kind of Connectors for Active Phased Array Radar system, uses the antenna array.
During group battle array, by two-dimentional AESA design each antenna element for including be abstracted into a little, according to agreement order according to
Each point in the secondary random form filling front region using Unit 4 or unit 8 L-shaped submatrix, and follow not with having been filled with
The principle that mutually covers of submatrix；In filling process the point for needing to fill is walked using the attachment point existed around L-shaped submatrix with lower n
Whether reasonable carry out the current filling mode of anticipation.Each L-shaped in the random planar battle array being made up of L-shaped submatrix, battle array can be combined into
An active channel is used only in battle array, greatly reduces compared to conventional full battle array active channel number, saves system cost；After group battle array, by
Each L-shaped submatrix is different in antenna array, and active channel distribution is random, and radiated electric field is cut in the superposition of the observed direction external space
It is weak, weaken the directional diagram graing lobe as caused by active channel rarefaction.
The present invention has advantages below compared with prior art：The present invention walks to be filled with the attachment point of L-shaped submatrix with lower n
The anticipation point set of point composition judges whether the L-shaped submatrix state currently filled is suitable, improves charging efficiency and success rate.With biography
System phased array is compared, the two-dimentional AESA active channel number constituted with the method be full battle array a quarter or eight/
One, active channel rarefaction degree is high, effectively save system cost.The active channel of random distribution effectively inhibits directional diagram grid
Valve, reduces the noise jamming of radar system.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is M × N antenna elements planar array feed abstract schematic；
Fig. 3 is 8 kinds of form schematic diagrames of L-shaped submatrix；
Fig. 4 is planar array fill order to be filled；
Fig. 5 is L-shaped submatrix and attachment point schematic diagram；
Fig. 6 is anticipation point set schematic diagram；
Fig. 7 is that L-shaped submatrix fixes feed schematic diagram；
Fig. 8 constitutes 50 × 50 two-dimentional AESAs by 4 unit L-shaped submatrixs；
Fig. 9 is 50 × 50 two-dimentional AESA orientation tangent plane view directions figures；
Figure 10 is 50 × 50 two-dimentional AESA pitching tangent plane view directions figures；
Figure 11 constitutes 74 × 74 two-dimentional AESAs by unit 8 L-shaped submatrix；
Figure 12 is 74 × 74 two-dimentional AESA orientation tangent plane view directions figures；
Figure 13 is 74 × 74 two-dimentional AESA pitching tangent plane view directions figures.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment to implement step as follows：(1) it will be wrapped in the two-dimentional AESA of target
The M contained × N number of antenna element is abstracted into M × N number of filling point；
(2) according to agreement fill order, anticipation points n and the L-shaped submatrix type used, next filling point is selected, with
Machine selection L-shaped submatrix form is filled, and the submatrix for meeting and having been filled with is not covered mutually；
(3) walking the attachment point around the L-shaped submatrix currently filled and lower n needs the point filled to be classified as anticipation point set, with
It is pre-filled that machine selects L-shaped submatrix form to carry out anticipation point set, if being combined in the presence of the L-shaped submatrix that anticipation point set can be completely covered
Next step filling is then carried out, otherwise judges that the filling mode of current L-shaped submatrix is invalid, reselects a kind of L-shaped submatrix form and enter
Row filling；
(5) after the completion of group battle array, its direction of an electric field figure is calculated according to far field calculation formula, it is determined that currently whether group battle array mode is full
Pedal system requirement, is such as unsatisfactory for, return to step (2) is refilled.
Each antenna element included in the present embodiment target two dimension AESA is abstracted into point to be filled.Usually, two
The antenna element for the ultimate range that dimension AESA is smaller than out graing lobe by unit constitutes each antenna list in planar array, battle array
Member is fed by a T/R components passage, and the position of distributing point is abstracted into a point, and planar array can just be abstracted into certain by position
Point composition.As described in Figure 2, treat that the planar array of group battle array includes M × N number of antenna element, be then abstracted into M × N number of point.
The L-shaped submatrix of the present embodiment is that 4 unit arrangements are L-shaped.The horizontal edge and vertical edge of the L-shaped submatrix of original state have
1 row's unit.
As shown in figure 3, Fig. 3 (1) is 4 unit L-shaped submatrix aspect graphs, Fig. 3 (2) is unit 8 L-shaped submatrix aspect graph.Due to L
Shape submatrix has 8 states, i.e., by original state L-shaped by being rotated by 90 °, 180 °, 270 °, mirror image add be rotated by 90 °, 180 °, 270 °
8 obtained states, must choose fill order during filling, it is to avoid cause can not find and can fill up because fill order is not fixed
The group battle array mode of objective plane battle array, conventional fill order see in Fig. 4, Fig. 4 (1) filling point from top to bottom along multiple zigzags according to
In secondary filling, Fig. 4 (2), filling point is sequentially filled along multiple bow fonts from top to bottom, in Fig. 4 (3), filling point edge from inside to outside
Helicoid is sequentially filled；Anticipation points n is selected, charging efficiency and success rate when being favorably improved group battle array.The type of L-shaped submatrix
Then include 4 unit L-shaped submatrixs and unit 8 L-shaped submatrix, for the different demand of system, one of which type is selected during filling.
Next filling point is selected, random selection L-shaped submatrix form is filled.It is random from 8 states of L-shaped submatrix
Selection one, during filling, it then follows be not covered as principle mutually with the submatrix that has been filled with, is completed with L-shaped submatrix covering point to be filled
Filling.
Attachment point around the L-shaped submatrix currently filled and lower n, which are walked, needs the point filled to be classified as anticipation point set, random choosing
L-shaped submatrix is selected pre-filled to the progress of anticipation point set, under being carried out if being combined in the presence of the L-shaped submatrix that anticipation point set can be completely covered
One step is filled, and is otherwise judged that the filling mode of current L-shaped submatrix is invalid, is reselected a kind of form and be filled 4.Such as Fig. 5 (1)
Shown, the single L-shaped submatrix of Unit 4 has 14 attachment points to be closely distributed in around it, such as shown in Fig. 5 (2), single unit 8 L-shaped
Submatrix has 18 attachment points to be closely distributed in around it, after the completion of the 3rd step, and attachment point is substituted into target array.Remove and lower n
Walk after the attachment point overlapped, choose remaining attachment point and walk the point for needing to fill as anticipation point set with lower n, as shown in fig. 6, with
The principle not covered mutually with the submatrix that has been filled with carries out pre-filled, enters if in the presence of the combination that anticipation point set can be completely covered
Enter next step filling until the filling completion of whole planar array, otherwise judges that the filling mode of current L-shaped submatrix is invalid, reselect
A kind of form is filled.
After the completion of group battle array, its direction of an electric field figure is calculated according to far field calculation formula.During calculating, single L-shaped submatrix is by one
Active channel is fed, and feed position is typically fixed as a fixed position in L-shaped submatrix, as shown in fig. 7, Fig. 7 (1)
Feed schematic diagram is fixed for 4 unit L-shaped submatrixs, Fig. 7 (2) is that unit 8 L-shaped submatrix fixes feed schematic diagram.Due to a group battle array process
For random process, active channel distribution is random in antenna array, and main lobe performance is relatively stable in direction of an electric field figure, and secondary lobe performance has
Certain fluctuation by result of calculation, it is necessary to be determined whether current group battle array mode meets system requirements.
As shown in figure 8, the present embodiment selects 4 unit L-shaped submatrixs, fills unit number is 50 × 50 two-dimentional active phase
Battle array, the fill order of agreement is order shown in Fig. 4 (3), and n takes 7.
As shown in Figures 9 and 10, it is two in the case of antenna array antenna element spacing λ/2 (1/2nd operation wavelengths) in figure
The directional diagram at individual main tangent plane visual angle.The antenna array of the present embodiment and 50 × 50 two-dimentional active phases constituted with the square submatrix of Unit 4
Control battle array number of channels identical, and make interchannel away from 1 wavelength is reached using the square submatrix of Unit 4, graing lobe occurs in directional diagram, and
The antenna array result of calculation constituted using L-shaped submatrix has no graing lobe, illustrates that this scheme can effectively suppress graing lobe.
Embodiment 2
As shown in figure 11, the present embodiment selection unit 8 L-shaped submatrix, fills unit number is 74 × 74 two-dimentional active phase
Battle array, the fill order of agreement is order shown in Fig. 4 (3), and n takes 10.
The L-shaped submatrix of the present embodiment is that 8 unit arrangements are L-shaped.The horizontal edge of the L-shaped submatrix of original state has 2 row's units,
Vertical edge has 1 row's unit.
Other embodiment and embodiment 1 are identical.
As shown in Figures 12 and 13, it is in the case of antenna array antenna element spacing λ/2 (1/2nd operation wavelengths) in figure
The directional diagram at two main tangent plane visual angles.The present embodiment antenna array and 74 × 74 two-dimentional active phases constituted with rectangle unit 8 submatrix
Control battle array number of channels identical, and make interchannel away from more than to 1 wavelength using rectangle unit 8 submatrix, graing lobe occurs in directional diagram,
And the antenna array result of calculation constituted using L-shaped submatrix has no graing lobe, illustrate that this scheme can effectively suppress graing lobe.
Two-dimentional AESA is filled at random by 4 unit L-shaped submatrixs or unit 8 L-shaped submatrix, each with routine
Antenna element is greatly reduced active using the full battle array of active channel compared to active channel difference sparse 75% and 87.5%
Number of channels, saves system cost.Planar array after the completion of group battle array, its active channel is in random distribution, effectively inhibits direction
Figure graing lobe, reduces the noise jamming of radar system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation, it is characterised in that comprise the following steps：
(1) M × N number of antenna element included in the two-dimentional AESA of target is abstracted into M × N number of filling point；
(2) according to agreement fill order, anticipation points n and the L-shaped submatrix type used, next filling point, random choosing are selected
Select L-shaped submatrix form to be filled, the submatrix for meeting and having been filled with is not covered mutually；
(3) walking the attachment point around the L-shaped submatrix currently filled and lower n needs the point filled to be classified as anticipation point set, random choosing
Select L-shaped submatrix form pre-filled to the progress of anticipation point set, enter if being combined in the presence of the L-shaped submatrix that anticipation point set can be completely covered
Row next step is filled, and is otherwise judged that the filling mode of current L-shaped submatrix is invalid, is reselected a kind of L-shaped submatrix form and filled out
Fill；
(5) after the completion of group battle array, its direction of an electric field figure is calculated according to far field calculation formula, it is determined that whether current group battle array mode meets and be
System is required, is such as unsatisfactory for, return to step (2) is refilled.
2. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 1, it is characterised in that the L-shaped
The type of submatrix includes 4 unit L-shaped submatrixs and unit 8 L-shaped submatrix.
3. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 2, it is characterised in that described 4 is single
First L-shaped submatrix and unit 8 L-shaped submatrix has eight kinds of forms respectively, respectively by the corresponding L-shaped of Unit 4 submatrix and unit 8 L-shaped submatrix
Pass sequentially through be rotated by 90 °, 180 °, 270 °, mirror image add be rotated by 90 °, 180 °, 270 ° obtain.
4. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 1, it is characterised in that described to fill out
Filling order is：The filling point is sequentially filled along multiple zigzags from top to bottom.
5. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 1, it is characterised in that described to fill out
Filling order is：The filling point is sequentially filled along multiple bow fonts from top to bottom.
6. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 1, it is characterised in that described to fill out
Filling order is：The filling point is sequentially filled along helicoid from inside to outside.
7. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 2, it is characterised in that the list
The individual L-shaped submatrix of Unit 4 has 14 attachment points to be closely distributed in around it, and single unit 8 L-shaped submatrix has 18 attachment points close
Be distributed in around it, after the completion of step (3), attachment point is substituted into target array, remove with after the attachment point that overlaps of lower n steps,
Choose remaining attachment point and walk the point for needing to fill as anticipation point set with lower n.
8. a kind of L-shaped submatrix group battle array method based on multiple spot anticipation according to claim 1, it is characterised in that described pre-
Sentence a point for concentrating the lower n included to walk needs filling, its n value is any integer more than 1.
9. a kind of antenna array, it is characterised in that the antenna array is as pre- based on multiple spot as described in any one of claim 1~8
The L-shaped submatrix group battle array method sentenced is constituted.
10. a kind of Connectors for Active Phased Array Radar system, it is characterised in that use antenna array as claimed in claim 9.
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