CN109509984B - Single pulse polarization-changing system applied to target tracking - Google Patents
Single pulse polarization-changing system applied to target tracking Download PDFInfo
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- CN109509984B CN109509984B CN201811632713.4A CN201811632713A CN109509984B CN 109509984 B CN109509984 B CN 109509984B CN 201811632713 A CN201811632713 A CN 201811632713A CN 109509984 B CN109509984 B CN 109509984B
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- polarization
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- 230000010287 polarization Effects 0.000 claims abstract description 73
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a single-pulse polarization-changing system applied to target tracking, which comprises a transmitting antenna and a single-pulse receiving antenna, wherein the transmitting antenna is connected to a transmitting interface through a waveguide and is connected with an external signal source through the transmitting interface; the single pulse receiving antenna is respectively connected with a receiving difference port and a receiving sum port through two paths of waveguides and is connected with an external signal processing device through the receiving difference port and the receiving sum port; the horizontal polarization and the circular polarization conversion are obtained by controlling the change of the circular polarization grating through the motor, so that the method is applicable to various weather conditions and the precision of system signals is kept unchanged.
Description
[ field of technology ]
The invention belongs to the technical field of antennas, and relates to a single-pulse polarization-changing system applied to target tracking.
[ background Art ]
In modern target tracking systems, antenna technology is often used to construct a system for tracking and interfering with a target, so that a monopulse receiving antenna tracking system is a necessary device for tracking the target in a monopulse system.
However, the single pulse receiving antenna of the tracking system is single in polarization, so that problems can be caused to target tracking due to polarization problems in use, the precision of a circular polarization signal can be larger than that of a horizontal polarization signal when the weather is rainy and snowy, and the precision of the horizontal polarization signal can be larger than that of the circular polarization signal when the weather is clear, but the polarization of the pulse receiving antenna in the prior art is single, the antenna polarization mode can not be adjusted according to actual conditions, and the tracking precision and the tracking speed of the whole system are seriously influenced.
[ invention ]
The invention aims to provide a single-pulse polarization-changing system applied to target tracking, so that the problem that polarization switching can be performed according to actual conditions under the same antenna system and one-dimensional single-pulse tracking is further solved.
The invention adopts the following technical scheme: the single-pulse polarization-changing system comprises a transmitting antenna and a single-pulse receiving antenna, wherein the transmitting antenna is connected to a transmitting interface through a waveguide and is connected with an external signal source through the transmitting interface; the single pulse receiving antenna is respectively connected with a receiving difference port and a receiving sum port through two paths of waveguides and is connected with an external signal processing device through the receiving difference port and the receiving sum port;
the transmitting antenna comprises a transmitting horn feed source and a bias cutting reflecting surface which are oppositely arranged, a circular polarization grating capable of being turned along one side of the horn mouth is arranged at the horn mouth of the transmitting horn feed source, and the circular polarization grating is used for covering the horn mouth of the transmitting horn feed source so as to convert a horizontal polarization signal transmitted by the transmitting horn feed source into a circular polarization signal; the device is also used for turning away from the horn mouth of the transmitting horn feed source so that the transmitting horn feed source transmits a horizontal polarization signal;
the single-pulse receiving antenna comprises a receiving horn feed source and an offset cutting reflecting surface which are oppositely arranged, wherein a circular polarization grating capable of overturning along one side of the horn mouth is arranged at the horn mouth of the receiving horn feed source, and the circular polarization grating is used for covering the horn mouth of the receiving horn feed source so as to convert an external horizontal polarization signal into a circular polarization signal for the receiving horn feed source to receive; and the receiving horn feed source is also used for being rotated away from the horn mouth of the receiving horn feed source so as to enable the receiving horn feed source to receive the horizontal polarization signal.
Further, the device also comprises a bracket, wherein the bracket comprises a vertical plate and a horizontal plate which are vertically arranged, and the end part of the horizontal plate is connected with the middle part of the vertical plate;
the transmitting horn feed source and the receiving horn feed source are symmetrically arranged on the top surface and the bottom surface of the horizontal plate, direct current motors are arranged on the top surface and the bottom surface of the horizontal plate, the rotating shaft of each direct current motor is connected with the corresponding overturning shaft of the circular polarization grating, and each direct current motor is used for driving the circular polarization grating to rotate along the overturning shaft so as to cover or rotate away from the horn mouth of the transmitting horn feed source or the receiving horn feed source.
Further, the transmitting interface, the receiving differential port and the receiving and port are all arranged at the joint of the vertical plate and the horizontal plate, and the waveguide channel is arranged in the horizontal plate.
Further, two offset cutting reflecting surfaces are respectively arranged at the top and the bottom of the vertical plate and respectively correspond to the horn mouths of the transmitting horn feed source and the receiving horn feed source.
Further, reinforcing ribs (12) are arranged at the joint of the vertical plate and the horizontal plate, and a plurality of through holes are formed in each reinforcing rib (12).
Further, a cutting face support is provided between each cutting offset face and the vertical plate.
Further, a feed source bracket is arranged between the transmitting horn feed source and the horizontal plate and between the receiving horn feed source and the horizontal plate.
The beneficial effects of the invention are as follows: the change of the circular polarization grating is controlled by the motor to obtain the conversion of horizontal polarization and circular polarization, so that the method can be suitable for various weather conditions and keep the precision of system signals unchanged; the system irradiates the offset cutting reflecting surface by adopting a feed source irradiated by the variable polarization fan beam, so as to realize the tracking scanning of the fan beam; the receiving antenna feed source input port part in the system adopts the design of a receiving difference port and a receiving combination port so as to form a single pulse signal, and the system has the advantages of simple structure, convenient operation and adjustable polarization mode, and can easily obtain fan-shaped wave beams in the adopted mode; the whole system has reasonable design and is convenient to fix and install.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a single pulse polarization system for target tracking according to the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural diagram of a circularly polarized grating according to an embodiment of the present invention.
Wherein: 1. a transmitting antenna; 2. a monopulse receiving antenna; 3. transmitting a horn feed source; 4. offset cutting the reflecting surface; 5. receiving a horn feed source; 6. a DC motor; 7. a bracket; 8. a transmit port; 9. a receive difference port; 10. a receive and port; 11. a circularly polarized grating; 12. reinforcing ribs; 13. a reflective surface mount; 14. a feed source bracket.
[ detailed description ] of the invention
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention discloses a single-pulse polarization-changing system applied to target tracking, which comprises a transmitting antenna 1 and a single-pulse receiving antenna 2, wherein the transmitting antenna 1 and the single-pulse receiving antenna 2 realize frequency bands of 9.8 GHz-10.5 GHz, and meet technical index requirements in the whole frequency band.
The transmitting antenna 1 is connected to the transmitting interface 8 through a waveguide, the transmitting signal is sequentially transmitted through the transmitting interface 8, the transmitting waveguide and the transmitting antenna 1, the reflected signal is received by the monopulse receiving antenna 2 and then is respectively transmitted to the receiving difference port 9 and the receiving sum port 10 through two paths of transmitting waveguides, and a monopulse signal is generated and sent to an external signal processing device.
The transmitting antenna 1 is connected to the transmitting interface 8 through a waveguide and is connected to an external signal source through the transmitting interface 8. The monopulse receiving antenna 2 is connected to the receiving difference port 9 and the receiving sum port 10 through two waveguides, respectively, and is connected to an external signal processing device through the receiving difference port 9 and the receiving sum port 10. As shown in fig. 2, the transmitting interface 8, the receiving differential port 9 and the receiving and port 10 are all arranged at the junction of the vertical plate and the horizontal plate, the interior of the horizontal plate is provided with a waveguide channel, and each transmission waveguide is connected to the transmitting interface 8, the receiving differential port 9 and the receiving and port 10 after passing through the waveguide channel.
The transmitting antenna 1 comprises a transmitting horn feed source 3 and a bias cutting reflecting surface 4 which are oppositely arranged, and signals are transmitted to the transmitting horn feed source 3 through a waveguide and then reflected by the bias cutting reflecting surface. In order to realize three-prevention, the offset cutting reflecting surface 4 is made of carbon fiber. In order to fix the offset cut reflecting surface 4 on the support 7 well, the offset cut reflecting surface 4 is firstly fixed on the reinforcing rib 12 and then is arranged on the reflecting surface support 13, and meanwhile, in order to reduce the weight of the whole system, hole layout is carried out on the reinforcing rib 12 and the reflecting surface support 13.
As shown in fig. 3, a circular polarization grating 11 capable of being turned along one side of the bell mouth is arranged at the bell mouth of the transmitting horn feed source 3, and the circular polarization grating 11 is used for covering the bell mouth of the transmitting horn feed source 3 so as to convert a horizontal polarization signal transmitted by the transmitting horn feed source 3 into a circular polarization signal; the device is also used for turning away from the horn mouth of the transmitting horn feed source 3 so that the transmitting horn feed source 3 transmits out a horizontal polarization signal; the horizontal polarization signal of the transmitting horn feed source 3 can be converted into a circular polarization signal through the circular polarization grating 11, so that signal transmission in rainy and snowy weather is facilitated, and signal precision is improved.
The monopulse receiving antenna 2 comprises a receiving horn feed source 5 and an offset cutting reflecting surface 4 which are oppositely arranged, wherein a circular polarization grating 11 capable of being turned along one side of the horn mouth is arranged at the horn mouth of the receiving horn feed source 5, and the circular polarization grating 11 is used for covering the horn mouth of the receiving horn feed source 5 so as to convert an external horizontal polarization signal into a circular polarization signal for the receiving horn feed source 5 to receive; the horizontal polarization signal is also used for being diverted away from the horn mouth of the receiving horn feed source 5, so that the receiving horn feed source 5 receives the horizontal polarization signal, and the loss of the horizontal polarization signal is small under normal weather conditions.
Since the antenna requires fan beam, the feed source also adopts fan pyramid horn, the circular polarization grating 11 is added in front of the lens antenna, and the axial ratio is adjusted by adjusting the size of the circular polarization grating 11 and the distance between the circular polarization grating 11 and the horn mouth surface. The transmitting horn feed source 3 and the receiving horn feed source 5 are both in the form of lens horn antennas, so that the purpose is to ensure the width of wave beams of the pitching surface of the antennas, the caliber size of the feed source in the pitching direction is increased, the whole length size of the feed source is effectively reduced, the material of the feed source is aluminum materials, the material of the lens is polytetrafluoroethylene, and the feed source support 14 is in a hollowed-out structural design. The port of the lens horn antenna of the transmitting feed source 3 adopts a double-H-surface bent waveguide, and the port of the lens horn antenna of the receiving feed source 5 adopts an E-surface bent waveguide.
The system further comprises a bracket 7, the bracket 7 being arranged to mount the transmitting antenna 1 and the monopulse receiving antenna 2. The bracket 7 comprises a vertical plate and a horizontal plate which are vertically arranged, and the end part of the horizontal plate is connected with the middle part of the vertical plate; the handing-over department of vertical board and horizontal plate all is provided with strengthening rib 12, can promote the fastness of whole support 7 through strengthening rib 12, promotes system safety, in addition, all is equipped with a plurality of through-holes on every strengthening rib 12, reduces whole system weight when guaranteeing the fastness, save material.
The transmitting horn feed source 3 and the receiving horn feed source 5 are symmetrically arranged on the top surface and the bottom surface of the horizontal plate, the top surface and the bottom surface of the horizontal plate are respectively provided with a direct current motor 6, the rotating shaft of each direct current motor 6 is respectively connected with the corresponding turnover shaft of the circular polarization grating 11, and the turnover shaft of the circular polarization grating 11 corresponds to the side edges, close to the horizontal plate, of the transmitting horn feed source 3 and the receiving horn feed source 5 so as to ensure that the horn mouths of the transmitting horn feed source 3 and the receiving horn feed source 5 can be completely covered when the circular polarization grating is turned. The control signal of the direct current motor 6 is RS422, the power supply voltage is +12V, the maximum working current is 2A, the maximum conversion time is 10s, the circular polarization grating 11 adopts various structural layers for better realizing the circular polarization performance of the antenna, and meanwhile, the adopted material is polytetrafluoroethylene glass cloth plate. The use of the dc motor 6 reduces the size of the installation space and the weight of the whole system, and simplifies the operation of the control section.
Before the invention is used, whether the equipment connecting wire is complete is checked, when the power switch is turned on, the DC motor 6 is positioned at a position needing to work by inputting a polarization instruction, then a signal is input to the antenna system, the single pulse polarization-changing system works, and after the work is finished, the instrument and the power supply are sequentially turned off.
Each direct current motor 6 is used for driving the circularly polarized grating 11 to rotate along the turning shaft thereof so as to cover or rotate away from the horn mouth of the transmitting horn feed 3 or the receiving horn feed 5. When the circular polarization grating 11 covers the bell mouth, circular polarization of the signal can be realized, and when the circular polarization grating rotates away from the bell mouth, horizontal polarization of the signal can be realized.
The two offset cutting reflecting surfaces 4 are respectively arranged at the top and the bottom of the vertical plate and respectively correspond to the horn mouths of the transmitting horn feed source 3 and the receiving horn feed source 5. In order to ensure the angle adjustment of the offset cutting reflecting surfaces 4, reflecting surface brackets are arranged between each cutting offset surface 4 and the vertical plate, and the angle of the offset cutting reflecting surfaces 4 can be adjusted through the reflecting surface brackets so as to realize the correspondence between the offset cutting reflecting surfaces 4 and the horn mouth, and the offset cutting reflecting surfaces are fixed.
And a feed source bracket 14 is arranged between the transmitting horn feed source 3 and the horizontal plate and between the receiving horn feed source 5 and the horizontal plate, and the angle of the transmitting horn feed source 3 and the receiving horn feed source 5 can be adjusted through the feed source bracket so as to realize the corresponding angle with the offset cutting reflecting surface 4, and the fixing function is realized on the other hand.
Claims (7)
1. A single pulse polarization-changing system applied to target tracking, which is characterized by comprising a transmitting antenna (1) and a single pulse receiving antenna (2), wherein the transmitting antenna (1) is connected to a transmitting interface (8) through a waveguide and is connected with an external signal source through the transmitting interface (8); the single-pulse receiving antenna (2) is connected with a receiving difference port (9) and a receiving and port (10) through two paths of waveguides respectively, and is connected with an external signal processing device through the receiving difference port (9) and the receiving and port (10);
the transmitting antenna (1) comprises a transmitting horn feed source (3) and a bias cutting reflecting surface (4) which are oppositely arranged, wherein a circular polarization grating (11) capable of being turned along one side of the horn mouth is arranged at the horn mouth of the transmitting horn feed source (3), and the circular polarization grating (11) is used for covering the horn mouth of the transmitting horn feed source (3) so as to convert a horizontal polarization signal transmitted by the transmitting horn feed source (3) into a circular polarization signal; the device is also used for turning away from a horn mouth of the transmitting horn feed source (3) so that the transmitting horn feed source (3) transmits out a horizontal polarization signal;
the monopulse receiving antenna (2) comprises a receiving horn feed source (5) and an offset cutting reflecting surface (4) which are oppositely arranged, wherein a circular polarization grating (11) capable of being turned along one side of the horn mouth is arranged at the horn mouth of the receiving horn feed source (5), and the circular polarization grating (11) is used for covering the horn mouth of the receiving horn feed source (5) so as to convert an external horizontal polarization signal into a circular polarization signal for the receiving horn feed source (5) to receive; and the receiving horn feed source (5) is further used for being rotated away from a horn mouth of the receiving horn feed source (5) so that the receiving horn feed source (5) receives a horizontal polarization signal.
2. A single pulse polarization varying system for target tracking according to claim 1, further comprising a stand (7), said stand (7) comprising a vertical plate and a horizontal plate arranged vertically, the ends of said horizontal plate being connected in the middle of said vertical plate;
the utility model provides a loudspeaker feed source, including horizontal plate, transmission loudspeaker feed source (3), receiving loudspeaker feed source (5), direct current motor (6), every all be provided with on the top surface and the bottom surface of horizontal plate direct current motor (6) the pivot of direct current motor (6) respectively with the upset axle of corresponding circular polarization bars (11) is connected, every direct current motor (6) all are used for driving circular polarization bars (11) are rotated along its upset axle to cover or change from the horn mouth department of transmission loudspeaker feed source (3) or receiving loudspeaker feed source (5).
3. The single-pulse polarization-changing system for target tracking according to claim 2, wherein the transmitting interface (8), the receiving differential port (9) and the receiving and port (10) are all arranged at the junction of the vertical plate and the horizontal plate, and the interior of the horizontal plate is provided with a waveguide channel.
4. A single-pulse polarization-varying system for target tracking according to claim 3, characterized in that two offset cut reflecting surfaces (4) are provided on the top and bottom of the vertical plate, respectively, corresponding to the horn mouths of the transmitting horn feed (3) and the receiving horn feed (5), respectively.
5. A single-pulse polarization-varying system for target tracking according to claim 3, wherein the joint of the vertical plate and the horizontal plate is provided with reinforcing ribs (12), and each reinforcing rib (12) is provided with a plurality of through holes.
6. A single pulse polarization varying system for use in object tracking according to claim 4 or 5, wherein a facet bracket is provided between each of said offset facet reflectors (4) and the vertical plate.
7. A single pulse polarization varying system for target tracking according to claim 6, characterized in that the transmitting horn feed (3) and the horizontal plate and the receiving horn feed (5) and the horizontal plate are provided with a feed support (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632713.4A CN109509984B (en) | 2018-12-29 | 2018-12-29 | Single pulse polarization-changing system applied to target tracking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632713.4A CN109509984B (en) | 2018-12-29 | 2018-12-29 | Single pulse polarization-changing system applied to target tracking |
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| Publication Number | Publication Date |
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| CN109509984A CN109509984A (en) | 2019-03-22 |
| CN109509984B true CN109509984B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811632713.4A Active CN109509984B (en) | 2018-12-29 | 2018-12-29 | Single pulse polarization-changing system applied to target tracking |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300121B (en) * | 2021-05-26 | 2022-05-13 | 中国电子科技集团公司第三十八研究所 | Changeable polarization antenna transmission device capable of overturning |
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| CN109509984A (en) | 2019-03-22 |
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