CN109270496B - Air traffic control primary radar antenna feeder system - Google Patents
Air traffic control primary radar antenna feeder system Download PDFInfo
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- CN109270496B CN109270496B CN201811288304.7A CN201811288304A CN109270496B CN 109270496 B CN109270496 B CN 109270496B CN 201811288304 A CN201811288304 A CN 201811288304A CN 109270496 B CN109270496 B CN 109270496B
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- 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
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
- G01S7/032—Constructional details for solid-state radar subsystems
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- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to an air traffic control primary radar antenna feed system, which comprises a reflector, a feed source assembly, a crossbeam, a pitching adjusting structure, a turntable, a base and a driving device, wherein the reflector is arranged on the crossbeam; the reflector and the feed source assembly are fixed on the girder, and the feed source assembly is arranged on one side of the reflecting surface close to the reflector; the girder is fixedly connected with the rotary table through the pitching adjusting structure, and the rotary table can be clamped in the base in a rotating mode around the axis of the rotary table; the driving device is fixed on the base and is in transmission connection with the rotary table; the reflector comprises an upper reflector block and a lower reflector block, and aluminum alloy frameworks are arranged on the back surfaces of the upper reflector block and the lower reflector block; the aluminum alloy framework of the upper reflector block is fixedly connected with the aluminum alloy framework of the lower reflector block through a locking structure, and the aluminum alloy framework of the upper reflector block and the aluminum alloy framework of the lower reflector block are both fixed on the crossbeam. The invention has the advantages of simple assembly, convenient adjustment and good detection stability, and realizes the detection in a large-scale airspace.
Description
Technical Field
The invention belongs to the field of air traffic control radar equipment, and particularly relates to an air traffic control primary radar antenna feeder system.
Background
The short-range air traffic control primary radar is a search radar and is mainly used for detecting various airplane activity conditions in a range of 110-150 kilometers in radius and centered on an airport. The antenna feed system mainly comprises a reflector antenna, a feed source, a crossbeam connected with the feed source and the antenna, a rotary table for realizing the rotation of the antenna and other major structures.
At present, the common short-range hollow tube primary radar reflecting surfaces in the market are mostly metal mesh reflecting surfaces, the processing and assembling difficulty of metal mesh reflecting surface antennas is high, the precision is difficult to guarantee, the manufacturing period is long, and meanwhile, the total weight of parts such as metal meshes and framework back ribs for supporting the mesh surface shape is heavy, so that the transportation and the adjustment are inconvenient; the common short-range hollow tube primary radar antenna pitching adjustment is multi-point adjustment, and the adjustment workload is large.
Disclosure of Invention
According to the problems in the prior art, the invention provides an air traffic control primary radar antenna feeder system which has the advantages of simple assembly, convenience in adjustment and good detection stability, and realizes large-range airspace detection.
The invention adopts the following technical scheme:
an air traffic control primary radar antenna feed system comprises a reflector, a feed source assembly, a girder, a pitching adjusting structure, a rotary table, a base and a driving device; the reflector and the feed source assembly are fixed on the girder, and the feed source assembly is arranged on one side of the reflecting surface close to the reflector; the girder is fixedly connected with the rotary table through the pitching adjusting structure, and the rotary table can be clamped in the base in a rotating mode around the axis of the rotary table; the driving device is fixed on the base and is in transmission connection with the rotary table.
Preferably, the reflector comprises an upper reflector block and a lower reflector block, and the back surfaces of the upper reflector block and the lower reflector block are both provided with aluminum alloy frameworks; the aluminum alloy framework of the upper reflector block is fixedly connected with the aluminum alloy framework of the lower reflector block through a locking structure, and the aluminum alloy framework of the upper reflector block and the aluminum alloy framework of the lower reflector block are both fixed on the crossbeam.
Further preferably, the locking structure comprises bolt fasteners arranged on the back surfaces of the upper reflector block and the lower reflector block and snap quick-locking pieces arranged on the side surfaces of the upper reflector block and the lower reflector block; the bolt fastener is used for fastening the aluminum alloy framework of the upper reflector block and the aluminum alloy framework of the lower reflector block, and the buckle quick-locking piece is used for quickly fixing the aluminum alloy framework of the upper reflector block and the aluminum alloy framework of the lower reflector block.
Preferably, the aluminum alloy framework of the upper reflector block and the aluminum alloy framework of the lower reflector block are both fixed on the crossbeam through a back framework, and the back framework comprises a back framework upper block and a back framework lower block which are fixedly connected; the back frame upper block is fixedly connected with the aluminum alloy frame of the reflector upper block, the back frame lower block is fixedly connected with the aluminum alloy frame of the reflector lower block, and the bottom of the back frame lower block is fixed on the crossbeam.
Preferably, the pitch adjusting structure comprises an adjusting screw, a plurality of support lugs and a plurality of support grooves; the adjusting screw rod and the support lugs are arranged at the bottom of the girder, the support grooves are arranged at the top of the rotary table, the bottom end of the adjusting screw rod is hinged and fixed with one support groove, and the support lugs are correspondingly hinged and fixed with other support grooves respectively; the top end of the adjusting screw rod penetrates through the pin shaft at the bottom of the crossbeam, and nuts in threaded connection with the adjusting screw rod are arranged on the upper portion and the lower portion of the pin shaft of the adjusting screw rod.
More preferably, the number of the support lugs is two, the number of the support grooves is three, and the three support grooves are distributed in a triangular shape; the connecting lines of the two support lugs are perpendicular to the connecting line between the feed source assembly and the center of the reflector, and the hinged rotating surfaces of the adjusting screw rod, the support lugs and the support grooves are perpendicular to the connecting lines of the two support lugs.
Preferably, a slewing bearing inner gear ring is arranged on the circumference of the turntable, a slewing bearing outer gear ring is arranged on the corresponding position of the base, and the slewing bearing inner gear ring and the slewing bearing outer gear ring are arranged in a mutually meshed manner; the driving device comprises a shell, a transmission gear and a motor, wherein the transmission gear and the motor are fixed in the shell, the shell is fixedly connected with the base, the transmission gear is meshed with the inner gear ring of the slewing bearing, and the transmission gear is fixedly connected with an output shaft of the motor.
More preferably, the number of the driving devices is two.
Preferably, the reflector upper block and the reflector lower block are both of aluminum honeycomb sandwich structures, and the outer surfaces of the reflector upper block and the reflector lower block are wrapped with carbon fiber materials.
Preferably, the back frame upper block and the back frame lower block, the back frame upper block and the aluminum alloy frame of the reflector upper block, the back frame lower block and the aluminum alloy frame of the reflector lower block, and the back frame lower block and the girder are fixedly connected through flanges; the top of the back framework upper block is also provided with a flange interface for mounting a secondary radar.
The invention has the advantages and beneficial effects that:
1) the antenna feed system comprises a reflector, a feed source assembly, a girder, a pitching adjusting structure, a rotary table, a base and a driving device; the reflector and the feed source assembly are fixed on the girder, and the feed source assembly is arranged on one side of the reflecting surface close to the reflector; the girder is fixedly connected with the rotary table through the pitching adjusting structure, and the rotary table can be clamped in the base in a rotating mode around the axis of the rotary table; the driving device is fixed on the base and is in transmission connection with the rotary table. The structure is arranged, so that the pitching angle and the azimuth angle of the antenna feed system can be conveniently adjusted, and the large-scale airspace detection of the antenna feed system is realized.
2) The upper reflector block and the lower reflector block are both of aluminum honeycomb sandwich structures, and the outer surfaces of the upper reflector block and the lower reflector block are wrapped with carbon fiber materials.
3) The number of the support lugs is two, the number of the support grooves is three, and the three support grooves are distributed in a triangular shape; the connecting lines of the two support lugs are perpendicular to the connecting line between the feed source assembly and the center of the reflector, and the hinged rotating surfaces of the adjusting screw rod, the support lugs and the support grooves are perpendicular to the connecting lines of the two support lugs. Compared with the traditional multipoint adjustment, the three-point adjustment structure reduces the assembly difficulty, facilitates the adjustment of the pitch angle, and avoids instability caused by asynchronous multipoint adjustment.
4) The circumference of the turntable is provided with a slewing bearing inner gear ring, the base is provided with a slewing bearing outer gear ring at a corresponding position, and the slewing bearing inner gear ring and the slewing bearing outer gear ring are arranged in a mutually meshed manner; the driving device comprises a shell, a transmission gear and a motor, wherein the transmission gear and the motor are fixed in the shell, the shell is fixedly connected with the base, the transmission gear is meshed with the inner gear ring of the slewing bearing, and the transmission gear is fixedly connected with an output shaft of the motor. The turntable of the invention adopts the internal meshing structure mode to adjust the azimuth angle, so that the structure is compact, the size of the turntable is reduced, and simultaneously, compared with the traditional external meshing structure, the overturning resistance and the bearing capacity of the turntable of the invention are improved to some extent under the same size.
5) The two driving devices can be operated independently or simultaneously. On one hand, the two driving devices are mutually redundant, if one driving device is damaged, the other driving device can ensure the normal work of the antenna feeder system, the normal watching of the antenna feeder system cannot be influenced, and the working reliability of the antenna feeder system is improved; on the other hand, the single driving device can ensure normal work under the condition that the wind speed is within 35m/s, if the wind speed is more than 35m/s, the two driving devices work simultaneously, and the normal and stable work of the antenna feeder system is ensured.
Drawings
Fig. 1 is a perspective view of an antenna feed system according to the present invention.
Fig. 2 is a front view of the antenna feed system of the present invention.
Fig. 3 is a side view of the antenna feed system of the present invention.
Fig. 4 is a partial structural diagram of an antenna feed system of the present invention.
Fig. 5 is a partial structural diagram of an antenna feeder system of the present invention.
Reference numerals:
1-reflector, 2-feed source component, 3-girder, 4-pitching adjusting structure, 5-turntable, 6-base, 7-driving device, 8-back framework, 11-reflector upper block, 12-reflector lower block, 13-aluminum alloy framework, 14-locking structure, 31-pin shaft, 32-nut, 41-adjusting screw rod, 42-lug, 43-supporting groove, 51-slewing bearing inner gear ring, 61-slewing bearing outer gear ring, 71-shell, 72-transmission gear, 73-motor, 81-back framework upper block, 82-back framework lower block, 141-bolt fastener, and 142-buckle quick locking piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 3, an air traffic control primary radar antenna feed system comprises a reflector 1, a feed source assembly 2, a girder 3, a pitch adjusting structure 4, a rotary table 5, a base 6 and a driving device 7; the reflector 1 and the feed source assembly 2 are fixed on the girder 3, and the feed source assembly 2 is arranged on one side close to the reflecting surface of the reflector 1; the girder 3 is fixedly connected with a rotary table 5 through a pitching adjusting structure 4, and the rotary table 5 can be clamped in a base 6 in a rotating mode around the axis of the rotary table; the driving device 7 is fixed on the base 6, and the driving device 7 is in transmission connection with the rotary table 5.
The reflector 1 comprises an upper reflector block 11 and a lower reflector block 12, and aluminum alloy frameworks 13 are arranged on the back surfaces of the upper reflector block 11 and the lower reflector block 12; the aluminum alloy framework 13 of the upper reflector block 11 is fixedly connected with the aluminum alloy framework 13 of the lower reflector block 12 through a locking structure 14, and the aluminum alloy framework 13 of the upper reflector block 11 and the aluminum alloy framework 13 of the lower reflector block 12 are both fixed on the girder 3.
The locking structure 14 comprises bolt fasteners 141 arranged on the back surfaces of the upper reflector block 11 and the lower reflector block 12 and snap-in snap-locks 142 arranged on the side surfaces of the upper reflector block 11 and the lower reflector block 12; the bolt fastener 141 is used for fastening the aluminum alloy framework 13 of the upper reflector block 11 and the aluminum alloy framework 13 of the lower reflector block 12, and the snap quick-locking piece 142 is used for quickly fixing the aluminum alloy framework 13 of the upper reflector block 11 and the aluminum alloy framework 13 of the lower reflector block 12.
The aluminum alloy framework 13 of the upper reflector block 11 and the aluminum alloy framework 13 of the lower reflector block 12 are both fixed on the girder 3 through the back framework 8, and the back framework 8 comprises a back framework upper block 81 and a back framework lower block 82 which are fixedly connected; the back frame upper block 81 is fixedly connected with the aluminum alloy frame 13 of the reflector upper block 11, the back frame lower block 82 is fixedly connected with the aluminum alloy frame 13 of the reflector lower block 12, and the bottom of the back frame lower block 82 is fixed on the girder 3.
As shown in fig. 4, the pitch adjustment structure 4 includes an adjustment screw 41, a plurality of lugs 42, and a plurality of branch grooves 43; the adjusting screw 41 and the plurality of support lugs 42 are arranged at the bottom of the girder 3, the plurality of support grooves 43 are arranged at the top of the turntable 5, the bottom end of the adjusting screw 41 is hinged and fixed with one support groove 43, and the plurality of support lugs 42 are correspondingly hinged and fixed with other support grooves 43; the top end of the adjusting screw rod 41 penetrates through the pin shaft 31 at the bottom of the girder 3, and the adjusting screw rod 41 is provided with nuts 32 in threaded connection with the adjusting screw rod 41 at the upper part and the lower part of the pin shaft 31.
The number of the support lugs 42 is two, the number of the support grooves 43 is three, and the three support grooves 43 are distributed in a triangular shape; the connecting line of the two support lugs 42 is perpendicular to the connecting line of the feed source component 2 and the center of the reflector 1, and the hinged rotating surfaces of the adjusting screw 41, the support lugs 42 and the support grooves 43 are perpendicular to the connecting line of the two support lugs 42.
As shown in fig. 5, a slewing bearing inner gear ring 51 is arranged at the circumference of the turntable 5, a slewing bearing outer gear ring 61 is arranged at a corresponding position on the base 6, and the slewing bearing inner gear ring 51 and the slewing bearing outer gear ring 61 are arranged in a mutually meshed manner; the driving device 7 comprises a shell 71, a transmission gear 72 and a motor 73, wherein the transmission gear 72 and the motor 73 are fixed in the shell 71, the shell 71 is fixedly connected with the base 6, the transmission gear 72 is meshed with the inner gear ring 51 of the slewing bearing, and the transmission gear 72 is fixedly connected with an output shaft of the motor 73.
The number of the driving devices 7 is two.
The upper reflector block 11 and the lower reflector block 12 both adopt an aluminum honeycomb sandwich structure, and the outer surfaces of the upper reflector block 11 and the lower reflector block 12 are wrapped with carbon fiber materials.
The back framework upper block 81 and the back framework lower block 82, the back framework upper block 81 and the aluminum alloy framework 13 of the reflector upper block 11, the back framework lower block 82 and the aluminum alloy framework 13 of the reflector lower block 12, and the back framework lower block 82 and the girder 3 are fixedly connected through flanges; the top of the back framework upper block 81 is also provided with a flange interface for mounting a secondary radar.
When the antenna feed system is installed, firstly, a base 6 is fixed on a preset installation frame of the antenna feed system, then a rotary table 5 is sequentially installed on the base 6, a crossbeam 3 is installed on the rotary table 5, then a back framework lower block 82 and a back framework upper block 81 are respectively installed, then a reflector upper block 11 is installed and fixed on the back framework upper block 81 through an aluminum alloy framework 13 of a reflector 1, a reflector lower block 12 is installed and fixed on the back framework lower block 82, and meanwhile, the reflector upper block 11 and the reflector lower block 12 are fixed and locked through a bolt fastener 141 and a buckle quick locking piece 142 of a locking structure 14; the snap quick-locking member 142 is used to quickly and easily fix the upper reflector block 11 and the lower reflector block 12 in advance, and after the position is adjusted, the upper reflector block 11 and the lower reflector block 12 are firmly locked by the bolt fastener 141.
Finally, the feed source assembly 2 is arranged on the corresponding position of the girder 3, the two groups of driving devices 7 are respectively arranged on the base 6, and the transmission gear 72 of the driving device 7 is meshed with the inner slewing bearing ring gear 51 of the rotary table 5.
When the antenna feeder system is used, the motor 73 of the driving device 7 controls the rotation of the antenna feeder system, so that the azimuth angle of the antenna feeder system is controlled; the adjusting screw rod 41 moves up and down in the pin shaft 31 by rotating the nut 32, so that the pitch angle of the antenna feed system can be adjusted, and in the process, the pitch angle can be adjusted by only adjusting one point.
In conclusion, the invention provides the air traffic control primary radar antenna feeder system which has the advantages of being simple in assembly, convenient to adjust and good in detection stability, and the large-range air space detection is realized.
Claims (8)
1. The utility model provides an air traffic control primary radar antenna feeder system which characterized in that: the device comprises a reflector (1), a feed source component (2), a girder (3), a pitching adjusting structure (4), a turntable (5), a base (6) and a driving device (7); the reflector (1) and the feed source assembly (2) are fixed on the upper side of the girder (3), and the feed source assembly (2) is arranged on one side close to the reflecting surface of the reflector (1); the girder (3) is fixedly connected with the rotary table (5) through the pitching adjusting structure (4), and the rotary table (5) can be clamped in the base (6) in a rotating mode around the axis of the rotary table; the driving device (7) is fixed on the base (6), and the driving device (7) is in transmission connection with the rotary table (5);
the pitching adjusting structure (4) comprises an adjusting screw rod (41), a plurality of support lugs (42) and a plurality of support grooves (43); the adjusting screw rod (41) and the support lugs (42) are arranged at the bottom of the girder (3), the support grooves (43) are arranged at the top of the rotary table (5), the bottom end of the adjusting screw rod (41) is hinged and fixed with one support groove (43), and the support lugs (42) are correspondingly hinged and fixed with other support grooves (43); the top end of the adjusting screw rod (41) penetrates through a pin shaft (31) at the bottom of the girder (3), and nuts (32) in threaded connection with the adjusting screw rod (41) are arranged on the upper part and the lower part of the pin shaft (31) of the adjusting screw rod (41);
the number of the support lugs (42) is two, the number of the support grooves (43) is three, and the three support grooves (43) are distributed in a triangular shape; the connecting line of the two support lugs (42) is perpendicular to the connecting line of the feed source assembly (2) and the center of the reflector (1), and the hinged rotating surface of the adjusting screw rod (41), the support lugs (42) and the support groove (43) is perpendicular to the connecting line of the two support lugs (42).
2. An air traffic control primary radar antenna feed system according to claim 1, wherein: the reflector (1) comprises an upper reflector block (11) and a lower reflector block (12), and aluminum alloy frameworks (13) are arranged on the back surfaces of the upper reflector block (11) and the lower reflector block (12); the aluminum alloy framework (13) of the upper reflector block (11) is fixedly connected with the aluminum alloy framework (13) of the lower reflector block (12) through a locking structure (14), and the aluminum alloy framework (13) of the upper reflector block (11) and the aluminum alloy framework (13) of the lower reflector block (12) are fixed on the girder (3).
3. An air traffic control primary radar antenna feed system according to claim 2, wherein: the locking structure (14) comprises bolt fasteners (141) arranged on the back surfaces of the upper reflector block (11) and the lower reflector block (12) and snap quick-locking pieces (142) arranged on the side surfaces of the upper reflector block (11) and the lower reflector block (12); bolt fastener (141) are used for fastening aluminum alloy skeleton (13) of piece (11) on the reflector and aluminum alloy skeleton (13) of piece (12) under the reflector, buckle quick-locking piece (142) are used for aluminum alloy skeleton (13) of piece (11) on the quick fixed reflector and aluminum alloy skeleton (13) of piece (12) under the reflector.
4. An air traffic control primary radar antenna feed system according to claim 2, wherein: the aluminum alloy framework (13) of the upper reflector block (11) and the aluminum alloy framework (13) of the lower reflector block (12) are fixed on the girder (3) through the back framework (8), and the back framework (8) comprises a back framework upper block (81) and a back framework lower block (82) which are fixedly connected; the aluminum alloy frame structure is characterized in that the back frame upper block (81) is fixedly connected with the aluminum alloy frame (13) of the reflector upper block (11), the back frame lower block (82) is fixedly connected with the aluminum alloy frame (13) of the reflector lower block (12), and the bottom of the back frame lower block (82) is fixed on the crossbeam (3).
5. An air traffic control primary radar antenna feed system according to claim 1, wherein: a slewing bearing inner gear ring (51) is arranged on the circumference of the rotary table (5), a slewing bearing outer gear ring (61) is arranged on the base (6) at a corresponding position, and the slewing bearing inner gear ring (51) and the slewing bearing outer gear ring (61) are arranged in a mutually meshed manner; the driving device (7) comprises a shell (71), a transmission gear (72) and a motor (73), wherein the transmission gear (72) and the motor (73) are fixed in the shell (71), the shell (71) is fixedly connected with the base (6), the transmission gear (72) and the slewing bearing inner gear ring (51) are arranged in a mutually meshed mode, and the transmission gear (72) is fixedly connected with an output shaft of the motor (73).
6. An air traffic control primary radar antenna feed system according to claim 5, wherein: the number of the driving devices (7) is two.
7. An air traffic control primary radar antenna feed system according to claim 2, wherein: the upper reflector block (11) and the lower reflector block (12) both adopt aluminum honeycomb sandwich structures, and carbon fiber materials are wrapped on the outer surfaces of the upper reflector block (11) and the lower reflector block (12).
8. An air traffic control primary radar antenna feed system according to claim 4, wherein: the back framework upper block (81) and the back framework lower block (82), the back framework upper block (81) and the aluminum alloy framework (13) of the reflector upper block (11), the back framework lower block (82) and the aluminum alloy framework (13) of the reflector lower block (12), and the back framework lower block (82) and the crossbeam (3) are fixedly connected through flanges; the top of the back framework upper block (81) is also provided with a flange interface for mounting a secondary radar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288304.7A CN109270496B (en) | 2018-10-31 | 2018-10-31 | Air traffic control primary radar antenna feeder system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288304.7A CN109270496B (en) | 2018-10-31 | 2018-10-31 | Air traffic control primary radar antenna feeder system |
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| CN109270496A CN109270496A (en) | 2019-01-25 |
| CN109270496B true CN109270496B (en) | 2020-12-22 |
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| CN201811288304.7A Active CN109270496B (en) | 2018-10-31 | 2018-10-31 | Air traffic control primary radar antenna feeder system |
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| CN103474771B (en) * | 2013-09-26 | 2015-07-01 | 宁波迪泰电子科技有限公司 | Marine satellite antenna |
| CN103500884A (en) * | 2013-09-30 | 2014-01-08 | 无锡华信雷达工程有限责任公司 | Satellite receiving antenna |
| CN104393394A (en) * | 2014-11-21 | 2015-03-04 | 陕西欧赛通信科技有限公司 | Knapsack emergency satellite communication servo system |
| CN105552568A (en) * | 2016-03-01 | 2016-05-04 | 熊猫电子集团有限公司 | Airborne light-weight integrated parabolic antenna |
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|---|---|---|---|---|
| GB670631A (en) * | 1948-12-13 | 1952-04-23 | Gen Electric | Improvements in and relating to radio detection and ranging systems |
| CN202523846U (en) * | 2012-02-17 | 2012-11-07 | 合肥皖闽电子技术有限公司 | Radar antenna pitching device |
| CN205176266U (en) * | 2015-10-28 | 2016-04-20 | 安徽四创电子股份有限公司 | Motor -driven large -scale air traffic control secondary radar of formula |
| CN105428778A (en) * | 2015-12-21 | 2016-03-23 | 河北汉光重工有限责任公司 | Radar antenna manual pitching mechanism |
| CN108279414A (en) * | 2018-02-08 | 2018-07-13 | 四川道勤信业科技有限公司 | A kind of radar detection apparatus suitable for field |
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| CN109270496A (en) | 2019-01-25 |
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