CN110456312A - A kind of beam-broadening method based on arc equiphase surface - Google Patents
A kind of beam-broadening method based on arc equiphase surface Download PDFInfo
- Publication number
- CN110456312A CN110456312A CN201910777737.7A CN201910777737A CN110456312A CN 110456312 A CN110456312 A CN 110456312A CN 201910777737 A CN201910777737 A CN 201910777737A CN 110456312 A CN110456312 A CN 110456312A
- Authority
- CN
- China
- Prior art keywords
- arc
- broadening
- phase
- equiphase surface
- phase difference
- 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
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 present invention relates to a kind of beam-broadening methods based on additional arc phase face, belong to change phase method, by calculating phase difference corresponding to arc phase face, is directly superimposed in space quadrature corresponding to original beam position, beam-broadening can be realized, both the loop iteration in wave beam forming had been avoided, has also solved the problems, such as that beam-broadening degree is difficult to quantify to realize, method is simple, parameter testing is easy, real-time is good, and universality is strong, is convenient for Project Realization.
Description
Technical field
The invention belongs to phased array technology field, a kind of beam-broadening side based on arc equiphase surface for being related to
Method is applicable to any phased array radar.
Background technique
Phased array radar is due to gradually replacing tradition machinery with advantages such as flexible, the beam shape agiles of beam position
Radar is scanned, is applied on the various platforms such as ground, carrier-borne, airborne.But in practice, sometimes require that phased array antenna energy
The broadening for enough realizing wave beam, when such as being searched in specified space simultaneously and track multiple targets.Currently, the method generallyd use
Including two major classes, one kind is by reducing array number, and another kind of realized based on change phased array antenna phase, based on change
The method of phase can be divided into wave beam forming method and two kinds of phase defocusing method again.
It is relevant to beam-broadening in the prior art, a kind of patent CN104615854B " wave beam exhibition based on sparse constraint
Wide and side lobe suppression method " belong to wave beam forming method, beam-broadening and Sidelobe Suppression are realized using sparse reconstruct, to wave beam shape
The weight vector grown up to be a useful person does sparse iteration, and reconstruction signal obtains lower secondary lobe, needs to do iterative processing, calculates complicated.Patent
CN108811532B " a kind of missile-borne broad beam high-gain aerial " and " the broadband and wide wave beam rectangle monopole day patent CN104377428B
Line " Antenna Design field is belonged to, the antenna of fixed relatively broad beam is formed by design technology.
It is relevant to beam-broadening in the prior art, document " a kind of optimization method of Planar Phased Array Antenna beam-broadening "
In (Zhai Lixia, Zhang Liyun, " naval vessel science and technology ", 1995.3), using phase defocusing method, beam-broadening degree is depended on
Focal length, but the more difficult correspondence of relationship between the two, Project Realization are bad.
Document " application of the SFFT in array antenna beam broadening technology " (Chen Ding, Niu Baojun, He Ping Fa, " modern thunder
Up to ", 2008.6) in, using beam form-endowing method, using with continuous Fast Fourier Transform (FFT) (Successive Fast
Fourier Transforms, SFFT) realize Pattern Synthesis, to achieve the effect that beam-broadening, this method is needed according to mesh
Mark is iterated circulation, and operation is complicated, is not suitable for the system for needing quickly to handle in real time.
Document " a kind of phase array antenna beam method for widening research " (Gao Shichao, Bi Hongkui, marine electronic engineering,
2009.12) in, reduce the method in front aperture using array number is reduced, be mainly suitable for concentrating amplification and received passive
Phased array, for each unit independent transmission and received active phased array system, reflection power can be lost by reducing array number, thus
Detection range can be made to decline, influence system performance.
Summary of the invention
To avoid the shortcoming in above-mentioned background technique, the present invention proposes a kind of wave beam exhibition based on arc equiphase surface
Wide method realizes beam-broadening, meets radar broad beam by giving each array element to add arc phase difference in original phase face
The demands such as search, broad beam tracking, broad beam intercepting and capturing.
The technical solution of the present invention is to provide a kind of beam-broadening methods based on arc equiphase surface, include:
Using front center as origin, n-th of array element x-axis direction coordinate x is calculatedn, 0≤n≤N-1；
Determine radian θ；
Radius R corresponding to arcuate line segment is calculated；
The arc phase surface wave for calculating n-th of array element reaches distance Ln；
Calculate the wave path-difference σ at the opposite front center of n-th of array elementn；
Calculate the corresponding phase difference value of n-th of array element arc wave path-difference
The space quadrature that arc phase difference and beam position are determinedIt is added, gives antenna element.
Complete beam-broadening processing.
The present invention proposes a kind of beam-broadening method based on additional arc phase face, belongs to change phase method, passes through
Phase difference corresponding to arc phase face is calculated, is directly superimposed in space quadrature corresponding to original beam position,
Beam-broadening can be realized, both avoided the loop iteration in wave beam forming, also solve beam-broadening degree and be difficult to quantify to realize
The problem of, method is simple, and parameter testing is easy, and real-time is good, and universality is strong, is convenient for Project Realization.
Detailed description of the invention
Fig. 1 is arc equiphase surface schematic diagram.
Fig. 2 is that arc equiphase surface radius calculates schematic diagram.
Fig. 3 is that arc-shaped wave reaches path length difference calculating schematic diagram.
Fig. 4 is arc wave path-difference simulation result.
Fig. 5 corresponding phase difference when being 2 times of beam-broadening.
Fig. 6 corresponding phase difference when being 4 times of beam-broadening.
The beam-broadening simulation result that Fig. 7 a is beam position when being 0 °.
The beam-broadening simulation result that Fig. 7 b is beam position when being 10 °.
Specific embodiment
The present invention is based on linear equiphase surface is become arc equiphase surface design philosophy, in original linear space phase
It is superimposed the additive phase difference of an embodiment arc-shaped wave path difference in difference, realizes a kind of method of beam-broadening.
Beam-broadening method provided by the invention based on arc equiphase surface, comprising the following steps:
Step 1, as shown in Figure 1, it is assumed that entire front has 0~N-1 of number to be total to N number of antenna element A0~AN-1, along x-axis side
To arranged at equal intervals, two neighboring cell spacing is dx, using front center as coordinate origin O, n-th of array element x-axis direction coordinate
It is represented by(0≤n≤N-1)。
Step 2 determines that radian θ, θ usually take 10 °~30 °.
Step 3, as shown in Fig. 2, according to the N-1 array element AN-1Abscissa xN-1And curved line is calculated in radian θ
Radius (the corresponding radius of arc equiphase surface) R=x corresponding to sectionN-1/sin(θ)。
Step 4, as shown in figure 3, coordinate x according to array element on x coordinate axisnAnd the corresponding radius R of arcuate line segment is calculated
The arc phase surface wave of n-th of array element reaches distance
Wave path-difference σ of n-th of the array element of arc phase face with respect to front center is calculated in step 5n=Ln-R.Fig. 4 is arc
Shape wave path-difference simulation result.In figure, abscissa is array element coordinate, ordinate is radian θ array element corresponding arc-shaped wave when being 10 °
Path difference.
The corresponding phase difference value of n-th of array element arc wave path-difference is calculated in step 6
Wherein λ is operation wavelength, LmaxFor LnMaximum value in (0≤n≤N-1), A are proportionality coefficient, for adjusting beam-broadening times
Number.A takes 1.3 in the example of Fig. 5, indicates corresponding phase difference at 2 times of beam-broadening；A takes 2.9 in the example of Fig. 6, beam-broadening
Corresponding phase difference at 4 times.In figure, abscissa is array number, and ordinate is arc phase difference.
Step 7, the space quadrature for being determined arc phase difference and beam positionIt is added, gives antenna element,
In, space quadratureθBFor beam pointing-angle.θ in the example of Fig. 7 aB=0 °, which is
Beam-broadening simulation result when beam position is 0 °, θ in the example of Fig. 7 bB=10 °, the figure be beam position be 10 ° when
Beam-broadening simulation result.
Complete the processing of arc equiphase surface and beam-broadening process.
In conclusion the beam-broadening method of the present invention based on arc equiphase surface, calculates simple, parameter testing side
Just, Project Realization is easy, and has good minor lobe performance, is applicable to any phased array radar.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (4)
1. a kind of beam-broadening method based on arc equiphase surface, which is characterized in that
Entire front has N number of antenna element A0~AN-1, arranged at equal intervals, the spacing of two neighboring antenna element are along the x-axis direction
dx, using front center as coordinate origin, n-th of array element x-axis direction coordinate is calculated
The corresponding radius R=x of arc equiphase surface is calculatedN-1/ sin (θ), wherein θ is radian；
The arc phase surface wave for calculating n-th of array element reaches distance
Calculate the wave path-difference σ at the opposite front center of n-th of array elementn=Ln-R；
Calculate the corresponding phase difference value of n-th of array element arc wave path-differenceWherein, λ is
Operation wavelength, LmaxFor LnIn maximum value, A is proportionality coefficient for adjusting beam-broadening multiple；
The space quadrature that arc phase difference and beam position are determinedIt is added, gives antenna element；Wherein, space phase
DifferenceθBFor beam pointing-angle；
The processing of arc equiphase surface is completed, realizes beam-broadening.
2. as described in claim 1 based on the beam-broadening method of arc equiphase surface, which is characterized in that radian θ take 10 °~
30°。
3. as described in claim 1 based on the beam-broadening method of arc equiphase surface, which is characterized in that the beam-broadening side
Method is used for any phased array radar.
4. as claimed in claim 3 based on the beam-broadening method of arc equiphase surface, which is characterized in that based on change phased array
The mode of antenna phase is realized, adds arc phase difference to each array element in original phase face, i.e., by calculating arc phase
Phase difference corresponding to face is directly superimposed in space quadrature corresponding to original beam position, realizes beam-broadening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910777737.7A CN110456312B (en) | 2019-08-22 | 2019-08-22 | Beam broadening method based on arc equiphase surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910777737.7A CN110456312B (en) | 2019-08-22 | 2019-08-22 | Beam broadening method based on arc equiphase surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110456312A true CN110456312A (en) | 2019-11-15 |
| CN110456312B CN110456312B (en) | 2021-06-04 |
Family
ID=68488419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910777737.7A Active CN110456312B (en) | 2019-08-22 | 2019-08-22 | Beam broadening method based on arc equiphase surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110456312B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050007276A1 (en) * | 2003-07-10 | 2005-01-13 | Barrick Donald E. | Circular superdirective receive antenna arrays |
| CN102680968A (en) * | 2012-05-29 | 2012-09-19 | 上海无线电设备研究所 | Phase-scanning and mechanism-scanning combined airspace searching method based on spaceborne radar |
| CN103076607A (en) * | 2013-01-04 | 2013-05-01 | 北京航空航天大学 | Method for realizing sliding spotlight mode based on SAR (Synthetic Aperture Radar) satellite attitude control |
| CN103226190A (en) * | 2013-03-19 | 2013-07-31 | 南京大学 | True delay-based wideband phased array wave beam formation method |
| CN103558594A (en) * | 2013-10-28 | 2014-02-05 | 四川九洲空管科技有限责任公司 | Phased array beamforming method based on airborne equipment |
| CN105044679A (en) * | 2015-07-06 | 2015-11-11 | 电子科技大学 | Emission wave beam nulling widening method based on orthogonal projection |
| CN110188406A (en) * | 2019-05-09 | 2019-08-30 | 西安电子科技大学 | Adaptive nulling based on sidelobe cancellation device broadens algorithm |
-
2019
- 2019-08-22 CN CN201910777737.7A patent/CN110456312B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050007276A1 (en) * | 2003-07-10 | 2005-01-13 | Barrick Donald E. | Circular superdirective receive antenna arrays |
| CN102680968A (en) * | 2012-05-29 | 2012-09-19 | 上海无线电设备研究所 | Phase-scanning and mechanism-scanning combined airspace searching method based on spaceborne radar |
| CN103076607A (en) * | 2013-01-04 | 2013-05-01 | 北京航空航天大学 | Method for realizing sliding spotlight mode based on SAR (Synthetic Aperture Radar) satellite attitude control |
| CN103226190A (en) * | 2013-03-19 | 2013-07-31 | 南京大学 | True delay-based wideband phased array wave beam formation method |
| CN103558594A (en) * | 2013-10-28 | 2014-02-05 | 四川九洲空管科技有限责任公司 | Phased array beamforming method based on airborne equipment |
| CN105044679A (en) * | 2015-07-06 | 2015-11-11 | 电子科技大学 | Emission wave beam nulling widening method based on orthogonal projection |
| CN110188406A (en) * | 2019-05-09 | 2019-08-30 | 西安电子科技大学 | Adaptive nulling based on sidelobe cancellation device broadens algorithm |
Non-Patent Citations (3)
| Title |
|---|
| REZA FATEMI MOFRAD ET AL.: "Comparison of antenna beam broadening methods for phased array radar applications", 《2011 LOUGHBOROUGH ANTENNAS & PROPAGATION CONFERENCE》 * |
| 翟丽霞 等: "一种平面相控阵天线波束展宽的优化方法", 《舰船科学技术》 * |
| 高世超 等: "一种相控阵天线波束展宽方法研究", 《舰船电子工程》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110456312B (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | DOA estimation with sub-array divided technique and interporlated esprit algorithm on a cylindrical conformal array antenna | |
| CN103235292B (en) | Full-dimension and difference angle measurement method for zero setting conformal calibration of a planar phased array | |
| CN108051782A (en) | Extensive phased array difference beam based on Subarray partition forms system | |
| CN111430903B (en) | Radiation scattering integrated low-RCS antenna housing and design method thereof | |
| CN106855619B (en) | A method of obtaining the resolution ratio of MIMO imaging radar system all directions | |
| CN104391183A (en) | Near-field-measurement-based rapid calculation method of antenna far-field region characteristic | |
| Syeda et al. | Sparse MIMO array for improved 3D mm-wave imaging radar | |
| CN113314832A (en) | Millimeter wave vehicle-mounted MIMO radar antenna array device and design method | |
| Guo et al. | High resolution 2-D electromagnetic vortex imaging using uniform circular arrays | |
| CN103513225A (en) | Sparse planar formation optimization method based on spatial gain | |
| Zhou et al. | Fast low-sidelobe pattern synthesis for linear array thinning utilizing a modified iterative Chirp-Z transform technique | |
| CN112949193A (en) | Numerical method and system for directional diagram of subarray-level sparse array antenna | |
| Ghayoula et al. | Pattern Synthesis Using Hybrid Fourier-Neural Networks for IEEE 802.11 MIMO Application | |
| CN110456312A (en) | A kind of beam-broadening method based on arc equiphase surface | |
| Yang et al. | Robust adaptive beamformer using interpolation technique for conformal antenna array | |
| CN114639972A (en) | Method and device for optimizing array element position of unmanned aerial vehicle array antenna | |
| Cao et al. | Conformal Array Element Failure Correction Based on PSO-CS Algorithm | |
| Raniszewski et al. | The investigation of mutual coupling effects on a large array antenna radiation pattern | |
| Nesil et al. | Analysis and design of X-band Reflectarray antenna using 3-D EM-based Artificial Neural Network model | |
| Coşkun et al. | Wind farms' interference effects on the error performance of wireless line-of-sight communications using binary digital modulations | |
| Deng et al. | Grating lobe control of two-way pattern for linear distributed array | |
| Fan et al. | A low sidelobe sparse array antenna | |
| Perera et al. | Scalable EM simulation and validations of dual-polarized phased array antennas for MPAR | |
| RU213021U1 (en) | DEVICE FOR DETERMINING THE DIRECTION OF RADIO SIGNAL ARRIVAL | |
| Shishkin et al. | Analysis of influence of the clustering degree of the antenna array on its radiation characteristics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |