CN105929372A - Multi narrow wave beam shaping method and device for MIMO radar - Google Patents
Multi narrow wave beam shaping method and device for MIMO radar Download PDFInfo
- Publication number
- CN105929372A CN105929372A CN201610232719.7A CN201610232719A CN105929372A CN 105929372 A CN105929372 A CN 105929372A CN 201610232719 A CN201610232719 A CN 201610232719A CN 105929372 A CN105929372 A CN 105929372A
- Authority
- CN
- China
- Prior art keywords
- waveform
- form factor
- antenna
- angle
- launching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a multi narrow wave beam shaping method and device for an MIMO radar. The method comprises that the amount K of orthogonal baseband waveform is determined according to the amount K of directional angle of the multi narrow wave beam, and k represents a positive integer; a M*K-dimension waveform coefficient matrix is determined according the amount M of emission antennas and the amount K of orthogonal baseband waveform, and M represents a positive integer; vectors of first to kth columns of the M*K-dimension waveform coefficient matrix are optimized by utilizing a criterion of minimal integral sidelobe level, and an optimal waveform coefficient corresponding to each sub narrow wave beam is obtained; and the optimal waveform coefficients corresponding to all the sub narrow wave beams are merged to form an optimized waveform coefficient matrix. According to the method, shaping of multi narrow wave beams is realized, and the sidelobe level of the emission directional diagram is reduced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to shaping method and the device of the many narrow beams of a kind of MIMO radar.
Background technology
Naturally extending as phased-array radar, multiple-input and multiple-output (Multi-input Multi-output, MIMO)
Radar not only possesses waveform diversity (launching many waveforms) characteristic and is also provided simultaneously with launching Coherent coupling (coherent gain) spy of antenna
Property, design to realize launching beam (direction flexibly so that MIMO radar has extra discretion to carry out waveform optimization
Figure) figuration.
Launching beam figuration is to make the radiant power of transmitting antenna be irradiated according to the most desired being distributed in
Spatial domain in, thus form desired transmitting pattern.Generally speaking, it is achieved the method master that transmitting pattern figuration can use
There are two kinds: shape approximation algorithm (makes as optimized waveform covariance matrix (Waveform Covariance Matrix, WCM)
Designed directional diagram minimizes with mean square error (Mean Square Error, MSE) or the maximum of direct difference minimizes
Mode approaches desired orientation figure) and minimize side lobe levels algorithm.
But relevant algorithm is primarily adapted for use in the transmitting pattern design of broad beam, it is impossible to directly apply to narrow beam side
To G-Design.And, broad beam directly launched by radar the most not only can waste system emission power and also can reduce the output of system
Signal to noise ratio, because radar target is it is unlikely that launch broad beam and can add miscellaneous in each angle in irradiated spatial domain
The interference of ripple.In this external real world applications, after multiple targets occur in observed spatial domain, same to these several target areas
Shi Jinhang carefully monitors and observation become in order to one in the urgent need to, much the narrowest launching beam figuration then seems highly significant.
But tradition phased-array radar is owing to being limited by launching monophasic waveform system, it is impossible to be directly realized by how narrow launching beam figuration, and
Launch the MIMO radar of many waveforms then to carry figuration and provide possibility for realizing many narrow beams.
Summary of the invention
The purpose of the present invention is intended to solve one of above-mentioned technical problem the most to a certain extent.
To this end, the first of the present invention purpose is to propose the shaping method of the many narrow beams of a kind of MIMO radar.The method
Achieve many narrow beams figuration, thus reduce the side lobe levels of transmitting pattern.
Second object of the present invention is to propose the size enlargement apparatus of the many narrow beams of a kind of MIMO radar.
For reaching above-mentioned purpose, the shaping method of the many narrow beams of MIMO radar of first aspect present invention embodiment, including: root
Determining that the number of quadrature base band waveform is K according to number K pointing to angle of many narrow beams, wherein K is positive integer；According to launching antenna
Number K of number M and described quadrature base band waveform determines that M × K ties up form factor matrix, and wherein M is positive integer；Utilization minimizes
The criterion of integration side lobe levels is optimized design to 1 to the K column vector of described M × K dimension form factor matrix and obtains each
The optimization form factor that sub-narrow beam is corresponding；Optimization form factor corresponding for described every sub-narrow beam is merged into optimum
Change form factor matrix.
The shaping method of the embodiment of the present invention, first determines quadrature base band waveform according to the number pointing to angle of many narrow beams
Number, determine form factor matrix then according to the number launching antenna number and quadrature base band waveform, recycling minimizes
The criterion of integration side lobe levels is optimized design to each column vector in form factor matrix and obtains each sub-narrow beam pair
The optimization form factor answered, is finally merged into optimization form factor matrix by each optimization form factor.The method is real
Show many narrow beams figuration, thus reduce the side lobe levels of transmitting pattern.
In some instances, described transmitting antenna homogenous linear equidistantly arranges.
In some instances, each described transmitting antenna has Q independent, the signal of quadrature base band waveform, wherein, Q
For positive integer and less than or equal to M.
In some instances, the criterion expression formula minimizing integration side lobe levels described in is:
A (θ) is that its expression formula of steering vector launching antenna isWherein, M
For launching antenna number, dTFor the spacing between described transmitting antenna, θkFor described sensing angle, k represent kth (k=1,2 ..., K)
Individual beam pointing-angle.
In some instances, described shaping method, also include: obtain each according to described optimization form factor matrix
Launch the waveform that antenna is launched.
For reaching above-mentioned purpose, the size enlargement apparatus of the many narrow beams of MIMO radar of second aspect present invention embodiment.Including: the
One determines module, is K for determining the number of quadrature base band waveform according to number K pointing to angle of many narrow beams, and wherein K is just
Integer；Second determines module, for determining that according to number K launching antenna number M and described quadrature base band waveform M × K ties up ripple
Shape coefficient matrix, wherein M is positive integer；Optimize design module, minimize the criterion of integration side lobe levels to described M for utilizing
1 to the K column vector of × K dimension form factor matrix is optimized design and obtains the optimization waveform system that each sub-narrow beam is corresponding
Number；Synthesis module, for being merged into optimization form factor square by optimization form factor corresponding for described every sub-narrow beam
Battle array.
The size enlargement apparatus of the embodiment of the present invention, first first determines that module determines according to the number pointing to angle of many narrow beams
The number of quadrature base band waveform, then second determines that module determines ripple according to the number launching antenna number and quadrature base band waveform
Shape coefficient matrix, optimizes design module recycling and minimizes the criterion of integration side lobe levels to the every string in form factor matrix
Vector is optimized design and obtains the optimization form factor that each sub-narrow beam is corresponding, is finally synthesizing module by each optimization
Form factor is merged into optimization form factor matrix.The arrangement achieves many narrow beams figuration, thus reduce transmitting direction
The side lobe levels of figure.In some instances, described transmitting antenna homogenous linear equidistantly arranges.
In some instances, each described transmitting antenna has Q independent, the signal of quadrature base band waveform, wherein, Q
For positive integer and less than or equal to M.
In some instances, the criterion expression formula minimizing integration side lobe levels described in is:
A (θ) is that its expression formula of steering vector launching antenna isWherein, M
For launching antenna number, dTFor the spacing between described transmitting antenna, θkFor described sensing angle, k represent kth (k=1,2 ..., K)
Individual beam pointing-angle.
In some instances, described shaping method, also include: Waveform Design module, for according to described optimization ripple
Shape coefficient matrix obtains the waveform that each transmitting antenna is launched.
Aspect and advantage that the present invention adds will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment and will become
Substantially with easy to understand, wherein:
Fig. 1 is the schematic diagram in MIMO radar many narrow beams transmission direction according to an embodiment of the invention.
Fig. 2 is the flow chart of the shaping method of the many narrow beams of MIMO radar according to an embodiment of the invention；
Fig. 3 is the schematic diagram of the signal processing model of MIMO radar transmitting antenna in accordance with another embodiment of the present invention；
Fig. 4 is the flow chart of the shaping method of the many narrow beams of MIMO radar in accordance with another embodiment of the present invention；
Fig. 5 is the simulation result schematic diagram under three narrow beam figuration situations according to an embodiment of the invention；
Fig. 6 is the simulation result schematic diagram under five narrow beam figuration situations according to an embodiment of the invention；
Fig. 7 is the flow chart of the shaping method of the many narrow beams of MIMO radar according to one specific embodiment of the present invention；With
And
The schematic diagram of the size enlargement apparatus of the many narrow beams of Fig. 8 MIMO radar according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
For launching beam, side lobe levels is the most all the important indicator evaluating its reliability.And by integration
Lobe level defines the ratio of secondary lobe district (representative lose interest in region) energy and main lobe district (representing area-of-interest) energy, because of
If launching beam is divided into several regions by this, region of interest can not only be made during minimizing integration side lobe levels
The Energy distribution in territory maximizes, moreover it is possible to the energy minimization in the region that makes to lose interest in such that it is able to control launching beam energy very well
The distribution of amount, provides design space for launching beam figuration.Further, MIMO radar many narrow beams transmission side as shown in Figure 1
To schematic diagram.It can be seen that when many fixed points region interested is observed simultaneously, how narrow launching beam figuration than
Directly use broad beam to cover (dotted portion in figure) and possess higher efficiency such that it is able to make radar system obtain higher defeated
Go out signal to noise ratio.
Fig. 2 is the flow chart of the shaping method of the many narrow beams of MIMO radar according to an embodiment of the invention.
As in figure 2 it is shown, this shaping method can following several steps::
In a step 101, determine that according to number K pointing to angle of many narrow beams the number of quadrature base band waveform is K, wherein
K is positive integer.
It is understood that determine the number of transmitted waveform (orthogonal waveforms base) according to the number pointing to angle of many narrow beams
Mesh, uses a baseband waveform to realize the principle of a sub-narrow beam figuration, corresponding to these some sub-narrow beams of Parallel Design
Waveform.
In a step 102, determine that M × K ties up form factor according to number K launching antenna number M and quadrature base band waveform
Matrix, wherein M is positive integer.
As a kind of example, launch antenna homogenous linear and equidistantly arrange.
It is understood that a MIMO radar system, it is launched number of antennas and is M and equidistantly arranges with homogenous linear
Row, spacing is dT(less than or equal to launching signal half-wavelength).
As a kind of example, each is launched antenna and has Q independent, the signal of quadrature base band waveform, and wherein, Q is just
Integer and less than or equal to M.
It is understood that each antenna launch be one group and contain individual independent, the letter of quadrature base band waveform of Q (Q≤M)
Number, with the form of column vector, this Q waveform table is shown as φ (t)=[φ1(t) φ2(t) … φQ(t)]T, wherein superscript
T representing matrix transposition operates.So, launch antenna and modulate the coefficient (comprising amplitude and phase place) of this Q waveform respectively with corresponding
Form factor matrix represent C=[c1 c2 … cQ], whereinAnd cqBe by each transmitting antenna modulate q (q=1,
2 ..., Q) vector that constituted of the coefficient of individual waveform.DefinitionWherein EtRepresent the total work that radar antenna is launched
Rate, | | | | represent the Euclidean Norm of vector.
Needing illustratively, MIMO radar launches the signal processing model of antenna as shown in Figure 3.
In step 103, the criterion minimizing integration side lobe levels 1 to the K to M × K dimension form factor matrix is utilized
Column vector is optimized design and obtains the optimization form factor that each sub-narrow beam is corresponding.
It is understood that the expression formula that waveform is launched into far field objects θ (∈ Θ=[-pi/2, pi/2]) place is: s (t,
θ)=aH(θ) Φ (t)=aH(θ) C φ (t), wherein Φ (t)=C φ (t) for be made up of the transmitted waveform of M transmitting antenna institute to
Amount, a (θ) represents that the steering vector of transmitting antenna and its expression formula are
To transmitting signal s (t, θ) delivery square (representation signal radiant power) represented by above formula and a transmitted waveform cycle Tp
Interior integration, then the expression formula of MIMO radar transmitting pattern is i.e. represented by:
By (1) formula it can be seen that form factor Matrix C is closely bound up with launching beam figuration, optimize Matrix C and be not only reality
The design of existing launching beam is also the design realizing transmitted waveform.Beamlet number K according to known expectation wave beam, makes Q=K
(number of transmitted waveform base is also K), the dimension i.e. arranging form factor Matrix C is M × K and C=[c1 c2 … cK]。
It should be noted that in some instances, the criterion expression formula minimizing integration side lobe levels is:A (θ) is that its expression formula of steering vector launching antenna isWherein, M is for launching antenna number, dTBetween described transmitting antenna
Spacing, θkFor described sensing angle, k represent kth (k=1,2 ..., K) individual beam pointing-angle.
It is understood that first use the principle of Parallel Design during many narrow beams figuration, therefore for often
The Waveform Design of individual sub-narrow beam figuration, is all respectively adopted the criterion minimizing integration side lobe levels to obtain the major clique of waveform
Number.
It is understood that point to angle θ=[θ according to the beamlet of expectation wave beam1 θ2 … θK], use one to one
Principle (i.e. vector ckOnly depend on angle, θk, k=1,2 ..., K), utilize and minimize the criterion of integration side lobe levels respectively to C
In each column vector be optimized design: such as, for vector c1For, θ is pointed in definition1The main lobe district of the beamlet at place is
{θ1, secondary lobe district is then defined as except θ1Outer all regions, i.e. Θ { θ1, other vector the like, setting main lobe
Behind district and secondary lobe district, the criterion expression formula minimizing integration side lobe levels is:General and
SpeechBeing a positive definite matrix, therefore K minimization problem above can obtain optimal analytic solution, and kth
(k=1,2 ... K) optimal analytic solution of individual problem isWhereinU2It is by by order one matrix a (θk)aH(θk) feature decomposition is following expression gained:
ObtainingExpression formula after, can be configured by certain energy restrictive conditionMakeOne of which scheme is to makeThe most equal to all k, now the form factor Matrix C of gained is:
It should be noted that due to narrow beam figuration to be accomplished that, therefore minimize what integration secondary lobe criterion was considered
Being the narrowest situation, its core is: make every sub-narrow beam make other angle the radiant power pointed on angle is maximized simultaneously
Radiant power on degree minimizes.Therefore the main lobe area definition in this algorithm is to point to the discrete point corresponding to angle, and secondary lobe district is then
For other all of angle of radiation region in addition to pointing to discrete point corresponding to angle.
At step 104, optimization form factor corresponding for every individual sub-narrow beam is merged into optimization form factor square
Battle array.
It is understood that due to the principle using many narrow beams Parallel Design, therefore to obtain every height narrow
After optimum waveform coefficient corresponding to wave beam, need these optimal coefficients to be carried out comprehensively, be merged into a waveform system optimized
Matrix number.Thus many sub-narrow beams are comprehensively become narrow beam more than, thus realizes the how narrow launching beam of MIMO radar and compose
Shape.Additionally, algorithm is on the basis of known orthogonal waveforms base, every slave antenna launches the most linear group of these orthogonal waveforms bases
Waveform Design is converted into form factor matrix design by incompatible realization.
Furthermore achieved that signal power MIMO radar launched is as much as possible and be gathered in several angles interested
On degree (or several target areas), thus observe while being beneficial to multiple target, many sensing angles.
It should be noted that optimization form factor corresponding for every individual sub-narrow beam is being merged into optimization form factor
Matrix.After namely many sub-narrow beams comprehensively being become narrow beam more than, as shown in Figure 4, also include: step 105, according to
Optimize form factor matrix and obtain the waveform that each transmitting antenna is launched.Thus realize the Waveform Design of MIMO radar.
It is understood that such as, the form factor matrix that (3) formula is obtained is updated in the directional diagram of (1) formula, just may be used
Obtain final many narrow beams transmission directional diagram.Additionally, also can according to following formula draw m (m=1,2 ..., M) individual antenna sent out
The waveform expression formula penetrated is: [Φ (t)]m=C (m, 1:K) φ (t), wherein C (m, 1:K) is expressed as m row element group in Matrix C
The row vector become.
For example, as shown in table 1, launch number of antennas M=50, launch antenna distance dTAll take the half-wave launching signal
Length, and consider three wave beams and five wave beam situations respectively.
Table 1 simulation parameter
Fig. 5 gives the simulation result schematic diagram under three narrow beam figuration situations, as can be seen from the figure three beamlet
The angle that is actually pointed to fit like a glove with desired sensing angle [-20 ° 0 ° 35 °], and launching beam shape is good.
Fig. 6 gives the simulation result figure under five narrow beam figuration situations, it is also seen that five beamlet from figure
It is actually pointed to angle fit like a glove with desired sensing angle [-40 °-20 ° 0 ° 30 ° 60 °], and launching beam shape is good.
It should be noted that the above used embodiment, not the present invention is made any pro forma restriction, all
It is based on the related amendments that the technical spirit of the present invention carries out all to still fall within the range of the present invention program.
The shaping method of the embodiment of the present invention, first determines quadrature base band waveform according to the number pointing to angle of many narrow beams
Number, determine form factor matrix then according to the number launching antenna number and quadrature base band waveform, recycling minimizes
The criterion of integration side lobe levels is optimized design to each column vector in form factor matrix and obtains each sub-narrow beam pair
The optimization form factor answered, is finally merged into optimization form factor matrix by each optimization form factor.The method is real
Show many narrow beams figuration, thus reduce the side lobe levels of transmitting pattern.
So that those skilled in the art further appreciate that the shaping method of the many narrow beams of MIMO radar, have below in conjunction with Fig. 7
Body illustrate, as shown in Figure 7: summary be the Waveform Design of launching beam figuration is converted into form factor matrix design after, utilize
Minimize integration side lobe levels criterion and form factor matrix is optimized design, to realize how narrow launching beam figuration and transmitting
Waveform optimization designs.
Specifically, the every slave antenna of MIMO radar is made all to launch the waveform being made up of one group of random superposition of orthogonal waveforms base, and
Arbitrarily these waveforms of superposition (namely waveform is carried out amplitude and phase-modulation) coefficient matrix form and for form factor square
Battle array, determines that according to the number launching number of antennas and wave beam neutron wave beam (sensing angle) dimension of form factor matrix (represents
Launch number of antennas and the product of transmitted waveform number), form factor matrix-split is become and beamlet equal numbers of row
Vector, then uses the criterion minimizing integration side lobe levels to utilize and points to angle information respectively to the ripple corresponding to each beamlet
Shape coefficient vector is optimized design, is finally merged according to certain energy reversal ratio by these several optimum waveform coefficient vectors
Form factor matrix required by one-tenth, thus realize desired how narrow launching beam figuration and corresponding Waveform Design.Realizing
The side lobe levels of transmitting pattern is reduced during many narrow beams figuration.
Corresponding with the shaping method of the many narrow beams of MIMO radar that above-described embodiment provides, a kind of embodiment of the present invention
Also provide for the size enlargement apparatus of the many narrow beams of a kind of MIMO radar, the MIMO radar many narrow beams provided due to the embodiment of the present invention
Size enlargement apparatus has same or analogous technical characteristic with the shaping method of the many narrow beams of MIMO radar that above-described embodiment provides,
Therefore the embodiment at the shaping method of the many narrow beams of aforementioned MIMO radar is also applied for the MIMO radar that the present embodiment provides
The size enlargement apparatus of many narrow beams, is not described in detail in the present embodiment.As shown in Figure 8, the tax of the many narrow beams of this MIMO radar
Shape device comprise the steps that first determine module 10, second determine module 20, optimize design module 30, synthesis module 40 and waveform set
Meter module 50.
Wherein, first determines that module 10 determines quadrature base band waveform for number K pointing to angle according to many narrow beams
Number is K, and wherein K is positive integer.
Second determines that module 20 is for determining that according to number K launching antenna number M and quadrature base band waveform M × K ties up ripple
Shape coefficient matrix, wherein M is positive integer.
Optimize design module 30 for utilizing the criterion minimizing integration side lobe levels to M × K dimension form factor matrix
1 to K column vector is optimized design and obtains the optimization form factor that each sub-narrow beam is corresponding.
Synthesis module 40 is for being merged into optimization form factor by optimization form factor corresponding for every individual sub-narrow beam
Matrix.
In some instances, launch antenna homogenous linear equidistantly to arrange.
In some instances, each is launched antenna and has Q independent, the signal of quadrature base band waveform, and wherein, Q is just
Integer and less than or equal to M.
In some instances, the criterion expression formula minimizing integration side lobe levels is:
A (θ) is that its expression formula of steering vector launching antenna isWherein, M
For launching antenna number, dTFor the spacing between described transmitting antenna, θkFor described sensing angle, k represent kth (k=1,2 ..., K)
Individual beam pointing-angle.
In some instances, Waveform Design module 50 is for obtaining each transmitting antenna according to optimization form factor matrix
The waveform launched.
The size enlargement apparatus of the embodiment of the present invention, first first determines that module determines according to the number pointing to angle of many narrow beams
The number of quadrature base band waveform, then second determines that module determines ripple according to the number launching antenna number and quadrature base band waveform
Shape coefficient matrix, optimizes design module recycling and minimizes the criterion of integration side lobe levels to the every string in form factor matrix
Vector is optimized design and obtains the optimization form factor that each sub-narrow beam is corresponding, is finally synthesizing module by each optimization
Form factor is merged into optimization form factor matrix.The arrangement achieves many narrow beams figuration, thus reduce transmitting direction
The side lobe levels of figure.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
In flow chart or at this, any process described otherwise above or method description are construed as, and expression includes
One or more is for realizing the module of code, fragment or the portion of the executable instruction of the step of specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not by shown or discuss suitable
Sequence, including according to involved function by basic mode simultaneously or in the opposite order, performs function, and this should be by the present invention
Embodiment person of ordinary skill in the field understood.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the shaping method of the many narrow beams of MIMO radar, it is characterised in that comprise the following steps:
Number K pointing to angle according to many narrow beams determines that the number of quadrature base band waveform is K, and wherein K is positive integer；
Determining that M × K ties up form factor matrix according to number K launching antenna number M and described quadrature base band waveform, wherein M is
Positive integer；
The criterion minimizing integration side lobe levels is utilized to carry out excellent to 1 to the K column vector of described M × K dimension form factor matrix
Change design and obtain the optimization form factor that each sub-narrow beam is corresponding；
Optimization form factor corresponding for described every sub-narrow beam is merged into optimization form factor matrix.
2. shaping method as claimed in claim 1, it is characterised in that described transmitting antenna homogenous linear equidistantly arranges.
3. shaping method as claimed in claim 1, it is characterised in that it is individual independent, orthogonal that each described transmitting antenna has Q
The signal of baseband waveform, wherein, Q is positive integer and is less than or equal to M.
4. shaping method as claimed in claim 1, it is characterised in that described in minimize the criterion expression formula of integration side lobe levels and be:A (θ) is that its expression formula of steering vector launching antenna is
Wherein, M is for launching antenna number, dTFor the spacing between described transmitting antenna, θkFor described sensing angle, k represent kth (k=1,
2 ..., K) individual beam pointing-angle.
5. shaping method as claimed in claim 1, it is characterised in that also include: according to described optimization form factor matrix
Obtain the waveform that each transmitting antenna is launched.
6. the size enlargement apparatus of the many narrow beams of MIMO radar, it is characterised in that including:
First determines module, is K for determining the number of quadrature base band waveform according to number K pointing to angle of many narrow beams, its
Middle K is positive integer；
Second determines module, for determining that according to number K launching antenna number M and described quadrature base band waveform M × K ties up waveform
Coefficient matrix, wherein M is positive integer；
Optimize design module, minimize the criterion of integration side lobe levels the to described M × K dimension form factor matrix for utilizing
1 to K column vector is optimized design and obtains the optimization form factor that each sub-narrow beam is corresponding；
Synthesis module, for being merged into optimization form factor square by optimization form factor corresponding for described every sub-narrow beam
Battle array.
7. size enlargement apparatus as claimed in claim 6, it is characterised in that described transmitting antenna homogenous linear equidistantly arranges.
8. size enlargement apparatus as claimed in claim 6, it is characterised in that it is individual independent, orthogonal that each described transmitting antenna has Q
The signal of baseband waveform, wherein, Q is positive integer and is less than or equal to M.
9. size enlargement apparatus as claimed in claim 6, it is characterised in that described in minimize the criterion expression formula of integration side lobe levels and be:A (θ) is that its expression formula of steering vector launching antenna is
Wherein, M is for launching antenna number, dTFor the spacing between described transmitting antenna, θkFor described sensing angle, k represent kth (k=1,
2 ..., K) individual beam pointing-angle.
10. size enlargement apparatus as claimed in claim 6, it is characterised in that also include: Waveform Design module, for according to described
Optimization form factor matrix obtains the waveform that each transmitting antenna is launched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232719.7A CN105929372B (en) | 2016-04-14 | 2016-04-14 | The shaping method and device of the more narrow beams of MIMO radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232719.7A CN105929372B (en) | 2016-04-14 | 2016-04-14 | The shaping method and device of the more narrow beams of MIMO radar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105929372A true CN105929372A (en) | 2016-09-07 |
| CN105929372B CN105929372B (en) | 2018-10-02 |
Family
ID=56839144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610232719.7A Active CN105929372B (en) | 2016-04-14 | 2016-04-14 | The shaping method and device of the more narrow beams of MIMO radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105929372B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190409A (en) * | 2019-05-31 | 2019-08-30 | 珠海上富电技股份有限公司 | Beamforming algorithm, design method and the beam-shaped antenna of beam-shaped antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369014A (en) * | 2008-08-08 | 2009-02-18 | 西安电子科技大学 | Bilateral constraint self-adapting beam forming method used for MIMO radar |
| CN104678362A (en) * | 2015-03-13 | 2015-06-03 | 电子科技大学 | Waveform optimization method for MIMO (multiple input multiple output) sky-wave over-the-horizon radar |
| US20150323650A1 (en) * | 2013-03-11 | 2015-11-12 | Src, Inc. | Mimo angle estimation with simultaneous mainlobe jammer cancellation |
| CN105467365A (en) * | 2015-12-08 | 2016-04-06 | 中国人民解放军信息工程大学 | A low-sidelobe emission directional diagram design method improving DOA estimated performance of a MIMO radar |
-
2016
- 2016-04-14 CN CN201610232719.7A patent/CN105929372B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369014A (en) * | 2008-08-08 | 2009-02-18 | 西安电子科技大学 | Bilateral constraint self-adapting beam forming method used for MIMO radar |
| US20150323650A1 (en) * | 2013-03-11 | 2015-11-12 | Src, Inc. | Mimo angle estimation with simultaneous mainlobe jammer cancellation |
| CN104678362A (en) * | 2015-03-13 | 2015-06-03 | 电子科技大学 | Waveform optimization method for MIMO (multiple input multiple output) sky-wave over-the-horizon radar |
| CN105467365A (en) * | 2015-12-08 | 2016-04-06 | 中国人民解放军信息工程大学 | A low-sidelobe emission directional diagram design method improving DOA estimated performance of a MIMO radar |
Non-Patent Citations (2)
| Title |
|---|
| HAISHENG XU等: "Colocated MIMO Radar Waveform Design for Transmit Beampattern Formation", 《IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS》 * |
| 罗涛等: "低旁瓣MIMO 雷达发射方向图设计", 《电子与信息学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190409A (en) * | 2019-05-31 | 2019-08-30 | 珠海上富电技股份有限公司 | Beamforming algorithm, design method and the beam-shaped antenna of beam-shaped antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105929372B (en) | 2018-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tang et al. | Relative entropy-based waveform design for MIMO radar detection in the presence of clutter and interference | |
| CN106772294B (en) | A kind of radiation signal simulator and implementation method | |
| CN101950014B (en) | MIMO (Multiple Input Multiple Output) radar wave shape online designing method | |
| CN103076596B (en) | Prior-information-based method for designing transmitting direction diagram of MIMO (Multiple Input Multiple Output) radar | |
| CN106329153A (en) | Combined optimization method used for synthesis of large-scale heterogeneous four-dimensional antenna array | |
| CN105785328A (en) | Subarray-division-based FDA distance-angle decoupling wave beam formation method | |
| CN103650366B (en) | Beamforming methods and apparatuses | |
| CN111352080B (en) | Design method of low-interception frequency-controlled array MIMO radar system under constraint of PAPR and similarity | |
| CN103018732B (en) | MIMO (multi-input multi-output) radar waveform synthesis method based on space-time joint optimization | |
| CN106981728A (en) | A kind of bare cloth line array integrated approach of directional diagram reconstructable | |
| CN107395255A (en) | A kind of sane mixed-beam manufacturing process based on convex optimization | |
| Wang et al. | Sparse array design for multiple switched beams using iterative antenna selection method | |
| Wen et al. | Reconfigurable sparse array synthesis with phase-only control via consensus-ADMM-based sparse optimization | |
| CN107508623A (en) | A kind of robust ada- ptive beamformer method that distributed electromagnetic vector sensor is controlled based on frequency | |
| CN108459301B (en) | Heterogeneous array-based MIMO radar waveform design method | |
| CN111352079B (en) | Design method of low interception system based on frequency control array MIMO radar | |
| CN106597441A (en) | Multi-target ISAR imaging task-oriented MIMO radar waveform optimal design method | |
| Zhang et al. | Power-efficient beam designs for millimeter wave communication systems | |
| Browning et al. | A hybrid MIMO phased-array concept for arbitrary spatial beampattern synthesis | |
| CN108667489B (en) | Multi-beam waveform transmitting method and system | |
| Mohammed | Rectangular grid antennas with various boundary square-rings array | |
| CN105929372A (en) | Multi narrow wave beam shaping method and device for MIMO radar | |
| CN102175995B (en) | Adaptive method for realizing transmission zero-setting by digital array radar | |
| Pakdaman et al. | Separable transmit beampattern design for MIMO radars with planar colocated antennas | |
| KR101793340B1 (en) | Method and Apparatus for optimum power transmit and transmit beamforming for wideband array antenna based on Diagonal Loaded Least Mean Square method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |