CN203721888U - Satellite navigation antenna array - Google Patents
Satellite navigation antenna array Download PDFInfo
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- CN203721888U CN203721888U CN201320831931.7U CN201320831931U CN203721888U CN 203721888 U CN203721888 U CN 203721888U CN 201320831931 U CN201320831931 U CN 201320831931U CN 203721888 U CN203721888 U CN 203721888U
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- antenna array
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 12
- 238000003491 array Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 3
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000003044 adaptive effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000001010 compromised effect Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The utility model relates to a satellite navigation antenna array design, i.e. a satellite navigation antenna array. The antenna array comprises a transmission plate, four Beidou second generation B3 elements, and a GPS active element fixed at the center of the transmission plate. The four Beidou B3 elements are fixed to the transmission plate on the periphery of the GPS active element and distributed at fixed intervals in the shape of a matrix. The antenna array is characterized in that mutual coupling between the elements is small; antennas are low in elevation angle and high in gain, with strong capability of tracking low-elevation angle satellites, so that it is ensured that enough satellite are available for the system; the antenna array is resistant to interference with high gain and low profile; the antenna array is small in size, high in sensitivity, low in power consumption and high in reliability, can cooperate with a plurality of Beidou receivers for use, and is widely applied to the fields of navigation scheduling, tracking and monitoring, measurement and control, military, and the like.
Description
Technical field
The utility model relates to a kind of satellite navigation aerial battle array design, i.e. a kind of satellite navigation aerial battle array.
Background technology
Present satellite navigation system generally only possesses the ability that certain anti-arrowband disturbs, once missile borne system or mobile system enter the single wide-band interferer sphere of action of people enemy, navigation system just cannot normally be worked.Sometimes electromagnetic interference is more severe, and three broad-band interference exist simultaneously, and common satellite navigation system can not have been used more.
Summary of the invention
The utility model provides a kind of satellite navigation aerial battle array in order to realize the anti-single broad-band interference (more than jamming-to-signal ratio 70dB) of the Big Dipper two generations satellite navigation system and anti-three broad-band interference (more than jamming-to-signal ratio 60dB).
The utility model for achieving the above object, the technical scheme of taking is: a kind of satellite navigation aerial battle array, it is characterized in that: described satellite navigation aerial battle array (1) comprises expelling plate (1-1), Big Dipper B3 a period of time in two generations, active a period of time of GPS, active a period of time of described GPS is fixed on the center of expelling plate (1-1), 4 described Big Dipper B3 a period of time are fixed on the expelling plate (1-1) of the active a period of time circumference of GPS, and 4 Big Dipper B3 a period of time isometric circle battle arrays are arranged.
Feature of the present utility model is: array element and mutual coupling existing between elements are little; Antenna low elevation gain is high, strong to low elevation angle Satellite Tracking ability, guarantees that system usable satellite number is abundant; It is the anti-interference antenna of a high-gain, low section; There is the characteristics such as volume is small and exquisite, high sensitivity, low-power consumption, high reliability, can coordinate multiple Beidou receiver to use, be widely used in the fields such as navigation scheduling, tracking and monitoring, observing and controlling and military affairs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of satellite navigation aerial battle array, satellite navigation aerial battle array 1 comprises expelling plate 1-1, Big Dipper B3 a period of time in two generations, active a period of time of GPS, the center that active a period of time of GPS is screwed onto expelling plate 1-1 is as with reference to unit, 4 Big Dipper B3 a period of time are screwed onto on the expelling plate 1-1 of the active a period of time circumference of GPS, 4 Big Dipper B3 a period of time isometric circle battle arrays are arranged, and the mode by connector with straight cutting is connected with Beidou low-noise amplifier module respectively.Two adjacent B3 a period of time spacing are 74mm.
The selection of array element quantity:
Known according to the operation principle of adaptive antenna system, a N element array, only has N-1 the degree of freedom, produces at most N-1 zero falling into.Increasing as improving SNR of element number of array provides possibility.Unit number is many, and the antenna degree of freedom is large, and effective aperture is also large, and that can realize is zero sunken darker, so in order to resist more interference, wish to increase array element number.But in order to be applied to the contour dynamic subscriber of aircraft, the aeroperformance that installs the platforms such as reply aircraft additional of means for anti-jamming, maneuverability etc. have no significant effect.Array element number is more, and battle array is just more complicated, and cost is just higher, and volume, weight also can increase greatly.This is all totally unfavorable factor for practical application.
Array number is by decisions such as the anti-interference source quantity requiring, the zeroing degree of depth and hardware complexities.From the angle of adaptive algorithm, consider, although array number is less to the performance impact of algorithm, along with the increase of array number, formed main lobe width will narrow down.
Therefore, above factors are compromised, be generally 4 to 16 same antenna unit.According to index request, realize the inhibition to 3 interference, and make systems attempt miniaturization, in this system, adopt 4 Big Dipper B3 a period of time in two generations proper as array element.
The selection of the form of structuring the formation:
In general, the array element that forms adaptive array can be arranged by any-mode, but conventionally these similar co-polarizations, low gain array element by straight line equidistant (LES), circumference is equidistant or plane is equidistant arranges, and is orientated identical.Circle battle array is compared with linear array, has and can omnirange handle at wave beam and " zero point ", and aerial array takes up space little, and the advantage such as in any direction the identical and difficult generation direction finding of antenna aperture is fuzzy.In addition, line array cannot form the wave beam of needle-like, and the wave beam that circle formation becomes is needle-like, and inhibition interference effect is better and arrangement mode is simple, thereby circle battle array is a kind of more practical antenna form.So design adopts circle battle array to arrange.
In non-static interference environment, common antenna array structure can produce carrier phase tracking problem.Adopting the unit of array center is the reference unit of PI algorithm, is also the symmetric points of array.Due to symmetrical relation, the output of total battle array will be real number, thereby only needs amplitude modulation and need to not carry out phase modulation by antenna array, thereby prevents carrier phase tracking problem.So array center just uses active a period of time of GPS as with reference to unit.
The selection of array element distance:
The physical structure of antenna array, the relative position between array element, has a great impact the performance of whole system.Between array element, relative distance chooses the coupling effect that should consider between each antenna pattern.Too small when array element distance, there will be serious mutual coupling phenomenon, make the problems such as widen the zero point of interference radiating way formation, and the degree of depth shoals, reduced the performance of adaptive array.When spacing is greater than about half wavelength, can produce graing lobe, this is also that system does not wish to occur.Based on these 2 considerations, in order to make mutual coupling reduce to minimum, can prevent that again graing lobe from occurring, generally gets array element distance d ≈ 0.5 λ.But in some special applications (as airborne in some, missile-borne platform), installation dimension is limited, have to consider miniature battle array technology.In this case, minimum for the performance of system is reduced, must take measures to reduce the impact of the factors such as element mutual coupling.Comprehensive these factors, in project, plan adopts the unit interval of 74mm (approximately 0.31 λ).
Claims (2)
1. a satellite navigation aerial battle array, it is characterized in that: described satellite navigation aerial battle array (1) comprises expelling plate (1-1), Big Dipper B3 a period of time in two generations, active a period of time of GPS, active a period of time of described GPS is fixed on the center of expelling plate (1-1), 4 described Big Dipper B3 a period of time are fixed on the expelling plate (1-1) of the active a period of time circumference of GPS, and 4 Big Dipper B3 a period of time isometric circle battle arrays are arranged.
2. according to a kind of satellite navigation aerial battle array described in claim 1, it is characterized in that: the spacing in described 4 Big Dipper B3 a period of time is: two adjacent B3 a period of time spacing are 74mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831931.7U CN203721888U (en) | 2013-12-17 | 2013-12-17 | Satellite navigation antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831931.7U CN203721888U (en) | 2013-12-17 | 2013-12-17 | Satellite navigation antenna array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721888U true CN203721888U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320831931.7U Expired - Lifetime CN203721888U (en) | 2013-12-17 | 2013-12-17 | Satellite navigation antenna array |
Country Status (1)
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| CN (1) | CN203721888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633572A (en) * | 2015-12-30 | 2016-06-01 | 航天恒星科技有限公司 | Multi-array-element conformal antenna |
| CN107275807A (en) * | 2017-06-22 | 2017-10-20 | 昆山睿翔讯通通信技术有限公司 | A kind of communication terminal structure of integrated millimeter wave antenna and navigation antenna |
-
2013
- 2013-12-17 CN CN201320831931.7U patent/CN203721888U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633572A (en) * | 2015-12-30 | 2016-06-01 | 航天恒星科技有限公司 | Multi-array-element conformal antenna |
| CN105633572B (en) * | 2015-12-30 | 2020-04-21 | 航天恒星科技有限公司 | Multi-array element conformal antenna |
| CN107275807A (en) * | 2017-06-22 | 2017-10-20 | 昆山睿翔讯通通信技术有限公司 | A kind of communication terminal structure of integrated millimeter wave antenna and navigation antenna |
| CN107275807B (en) * | 2017-06-22 | 2021-01-08 | 昆山睿翔讯通通信技术有限公司 | Communication terminal structure integrating millimeter wave antenna and navigation antenna |
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Legal Events
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Granted publication date: 20140716 |
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| CX01 | Expiry of patent term |