CN112491462A - Servo control-based antenna feed system in vehicle-mounted satellite ground station - Google Patents
Servo control-based antenna feed system in vehicle-mounted satellite ground station Download PDFInfo
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- CN112491462A CN112491462A CN202011371459.4A CN202011371459A CN112491462A CN 112491462 A CN112491462 A CN 112491462A CN 202011371459 A CN202011371459 A CN 202011371459A CN 112491462 A CN112491462 A CN 112491462A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses an antenna feeder system based on servo control in a vehicle-mounted satellite ground station, which comprises an antenna seat frame, an antenna feeder unit, a servo control unit and computer equipment, wherein the antenna seat frame is provided with a plurality of antenna feed holes; the antenna feed unit comprises a composite feed source and an antenna matched with the composite feed source, wherein the antenna is a parabolic antenna, and the composite feed source is fixed at the focus of the parabolic antenna through a support; the antenna pedestal comprises an X-Y type antenna pedestal for mounting the parabolic antenna and a servo motor for driving the X-Y type antenna pedestal to rotate; the servo control unit is used for measuring the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feeder system, transmitting the measured values to the computer equipment, controlling the servo motor in the seat to act according to the control instruction of the computer equipment, driving the X-Y type antenna seat to rotate, and ensuring the alignment of the antenna feeder unit and the target satellite. The invention can effectively ensure the alignment of the satellite ground station and the target satellite and has higher alignment precision.
Description
Technical Field
The invention relates to a satellite ground station, in particular to an antenna feeder system based on servo control in a vehicle-mounted satellite ground station.
Background
The traditional satellite ground stations are of various types, wherein the small satellite ground station generally only plays roles of observation, relay and the like. One of the most typical small satellite ground stations is the satellite communication Gateway (Gateway Station) which functions to connect satellite signals of a satellite communication system with a ground communication network, such as a satellite telephone to a ground cable telephone network or a satellite broadband data to a ground optical fiber network, and performs interpretation, conversion and information exchange with the ground network of a signaling protocol of the satellite communication system, but the conventional satellite ground Station has a disadvantage in alignment accuracy with a target satellite.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an antenna feed system based on servo control in a vehicle-mounted satellite ground station, which can effectively ensure the alignment of the satellite ground station and a target satellite and has higher alignment precision.
The purpose of the invention is realized by the following technical scheme: an antenna feeder system based on servo control in a vehicle-mounted satellite ground station comprises an antenna seat frame, an antenna feeder unit, a servo control unit and computer equipment;
the antenna feed unit comprises a composite feed source and an antenna matched with the composite feed source, wherein the antenna is a parabolic antenna, and the composite feed source is fixed at the focus of the parabolic antenna through a support;
the antenna pedestal comprises an X-Y type antenna pedestal for mounting the parabolic antenna and a servo motor for driving the X-Y type antenna pedestal to rotate;
the servo control unit is used for measuring the vehicle loading direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feeder system, transmitting the measured values to the computer equipment, controlling the action of a servo motor in the seat according to a control instruction of the computer equipment, driving the X-Y type antenna seat to rotate and ensuring the alignment of the antenna feeder unit and a target satellite;
and the computer equipment is used for generating a control command according to the information measured by the servo control unit, transmitting the control command to the servo control unit, and controlling the servo motor to act by the servo control unit according to the control command.
Preferably, the composite feed source comprises a Ka left-hand circularly polarized feed source, an L left-hand circularly polarized feed source and an L right-hand circularly polarized feed source which are sealed together by adopting a sealing cover. The Ka left-hand circular polarization feed source, the L left-hand circular polarization feed source and the L right-hand circular polarization feed source are all connected with signal ports. The signal port is an SMA interface and is used for signal transmission with equipment in the satellite ground station through a cable.
Wherein the servo control unit includes: the device comprises GPS/Beidou positioning and orientation attitude measurement equipment, an antenna controller, a motor driver, a limit switch and an angle encoder;
the GPS/Beidou double-antenna positioning and orientation attitude measurement equipment is used for measuring the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feed system and transmitting the measured data to the computer equipment through an RS232 interface;
the antenna controller is used for receiving a control command from the computer equipment through the RS232 interface, analyzing the control command and transmitting the analyzed control command to the motor driver;
the limiting switch and the angle encoder are used for carrying out rotation angle encoding and limiting encoding on the motor driver according to signals received by the motor driver to obtain encoding information;
and the motor driver is used for driving the servo motor in the seat to act according to the coding information of the limit switch and the angle encoder, and driving the X-Y type antenna seat to rotate so as to align the antenna feeder unit with the target satellite.
The computer device includes:
the computing unit is used for computing the angle and the direction of the satellite relative to the antenna feed system according to the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude measured by the GPS/Beidou dual-antenna positioning and orientation attitude measurement equipment and by combining the satellite position;
the control instruction generating unit is used for determining the angle and the direction of the servo motor to be controlled to rotate according to the angle and the direction obtained by the calculating unit, generating a control instruction according to the angle and the direction, and transmitting the control instruction to the antenna controller through an RS232 interface;
the satellite positions are determined from the current time and the known behavior of the satellites in the satellite system over time.
The invention has the beneficial effects that: according to the vehicle-mounted attitude and heading measurement device, the angle and the direction of a satellite relative to an antenna feed system can be calculated according to the vehicle-mounted direction, the inclination, the rolling, the longitude, the latitude and the altitude which are measured by the GPS/Beidou double-antenna positioning and orientation attitude measurement device in combination with the position of the satellite; and then determining the angle and direction of the servo motor to be controlled to rotate according to the obtained angle and direction, generating a control instruction according to the angle and direction, and transmitting the control instruction to the antenna controller to control the servo motor to rotate, thereby effectively ensuring the alignment of the satellite ground station and the target satellite and having higher alignment precision.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic layout diagram of a compound feed in an embodiment;
fig. 3 is a schematic diagram of the left-right circular polarization principle of the L-band in the embodiment.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1, an antenna feeder system based on servo control in a vehicle-mounted satellite ground station comprises an antenna pedestal, an antenna feeder unit, a servo control unit and a computer device;
the antenna feed unit comprises a composite feed source and an antenna matched with the composite feed source, wherein the antenna is a parabolic antenna, and the composite feed source is fixed at the focus of the parabolic antenna through a support;
the antenna pedestal comprises an X-Y type antenna pedestal for mounting the parabolic antenna and a servo motor for driving the X-Y type antenna pedestal to rotate;
the servo control unit is used for measuring the vehicle loading direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feeder system, transmitting the measured values to the computer equipment, controlling the action of a servo motor in the seat according to a control instruction of the computer equipment, driving the X-Y type antenna seat to rotate and ensuring the alignment of the antenna feeder unit and a target satellite;
and the computer equipment is used for generating a control command according to the information measured by the servo control unit, transmitting the control command to the servo control unit, and controlling the servo motor to act by the servo control unit according to the control command.
Preferably, the composite feed source comprises a Ka left-hand circularly polarized feed source, an L left-hand circularly polarized feed source and an L right-hand circularly polarized feed source which are sealed together by adopting a sealing cover. The Ka left-hand circular polarization feed source, the L left-hand circular polarization feed source and the L right-hand circular polarization feed source are all connected with signal ports. The signal port is an SMA interface and is used for signal transmission with equipment in the satellite ground station through a cable.
In the embodiment of the application, the Ka left-handed circular polarization feed source is a horn-shaped left-handed circular polarization feed source, the L-band is formed by compounding four dual-polarized microstrip feed sources, as shown in fig. 2, the four dual-polarized microstrip feed sources are A, B, C, D respectively, and the feed source in the middle is the Ka left-handed circular polarization feed source; the left-right circular polarization principle of the L-band is shown in fig. 3, a and D combine to receive a horizontally polarized wave, and output a horizontal component, which is recorded as: ex = EmSin (ω t), B and C combine to receive the vertically polarized wave, outputting a vertical component, noted: ey = EmCos (ω t), and the post-synthesis signal direction is tg θ = Ey/Ex = tg (ω t). Corresponding to the rotation of the electric field direction at an angular velocity of ω t. When Ex leads the Ey by 90 degrees, the electric field vector rotates anticlockwise; when Ex lags behind Ey by 90 ° in phase, the electric field vector rotates clockwise; so that right-left hand circular polarization can be formed.
Wherein the servo control unit includes: the device comprises GPS/Beidou positioning and orientation attitude measurement equipment, an antenna controller, a motor driver, a limit switch and an angle encoder;
the GPS/Beidou double-antenna positioning and orientation attitude measurement equipment is used for measuring the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feed system and transmitting the measured data to the computer equipment through an RS232 interface;
the antenna controller is used for receiving a control command from the computer equipment through the RS232 interface, analyzing the control command and transmitting the analyzed control command to the motor driver;
the limiting switch and the angle encoder are used for carrying out rotation angle encoding and limiting encoding on the motor driver according to signals received by the motor driver to obtain encoding information;
and the motor driver is used for driving the servo motor in the seat to act according to the coding information of the limit switch and the angle encoder, and driving the X-Y type antenna seat to rotate so as to align the antenna feeder unit with the target satellite.
The computer device includes:
the computing unit is used for computing the angle and the direction of the satellite relative to the antenna feed system according to the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude measured by the GPS/Beidou dual-antenna positioning and orientation attitude measurement equipment and by combining the satellite position;
the control instruction generating unit is used for determining the angle and the direction of the servo motor to be controlled to rotate according to the angle and the direction obtained by the calculating unit, generating a control instruction according to the angle and the direction, and transmitting the control instruction to the antenna controller through an RS232 interface;
the satellite positions are determined from the current time and the known behavior of the satellites in the satellite system over time.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides an antenna feeder system based on servo control in on-vehicle satellite ground station which characterized in that: the antenna comprises an antenna seat frame, an antenna feeder unit, a servo control unit and computer equipment;
the antenna feed unit comprises a composite feed source and an antenna matched with the composite feed source, wherein the antenna is a parabolic antenna, and the composite feed source is fixed at the focus of the parabolic antenna through a support;
the antenna pedestal comprises an X-Y type antenna pedestal for mounting the parabolic antenna and a servo motor for driving the X-Y type antenna pedestal to rotate;
the servo control unit is used for measuring the vehicle loading direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feeder system, transmitting the measured values to the computer equipment, controlling the action of a servo motor in the seat according to a control instruction of the computer equipment, driving the X-Y type antenna seat to rotate and ensuring the alignment of the antenna feeder unit and a target satellite;
and the computer equipment is used for generating a control command according to the information measured by the servo control unit, transmitting the control command to the servo control unit, and controlling the servo motor to act by the servo control unit according to the control command.
2. The antenna feed system based on servo control in the vehicle-mounted satellite earth station as claimed in claim 1, wherein: the composite feed source comprises a Ka left-hand circularly polarized feed source, an L left-hand circularly polarized feed source and an L right-hand circularly polarized feed source which are sealed together by adopting a sealing cover.
3. The antenna feed system based on servo control in the vehicle-mounted satellite earth station as claimed in claim 2, wherein: the Ka left-hand circular polarization feed source, the L left-hand circular polarization feed source and the L right-hand circular polarization feed source are all connected with signal ports.
4. The antenna feed system based on servo control in the vehicle-mounted satellite earth station as claimed in claim 3, wherein: the signal port is an SMA interface and is used for signal transmission with equipment in the satellite ground station through a cable.
5. The antenna feed system based on servo control in the vehicle-mounted satellite earth station as claimed in claim 1, wherein: the servo control unit includes: the device comprises GPS/Beidou positioning and orientation attitude measurement equipment, an antenna controller, a motor driver, a limit switch and an angle encoder;
the GPS/Beidou double-antenna positioning and orientation attitude measurement equipment is used for measuring the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude of the antenna feed system and transmitting the measured data to the computer equipment through an RS232 interface;
the antenna controller is used for receiving a control command from the computer equipment through the RS232 interface, analyzing the control command and transmitting the analyzed control command to the motor driver;
the limiting switch and the angle encoder are used for carrying out rotation angle encoding and limiting encoding on the motor driver according to signals received by the motor driver to obtain encoding information;
and the motor driver is used for driving the servo motor in the seat to act according to the coding information of the limit switch and the angle encoder, and driving the X-Y type antenna seat to rotate so as to align the antenna feeder unit with the target satellite.
6. The antenna feed system based on servo control in the vehicle-mounted satellite earth station as claimed in claim 5, wherein: the computer device includes:
the computing unit is used for computing the angle and the direction of the satellite relative to the antenna feed system according to the vehicle carrying direction, the inclination, the rolling, the longitude, the latitude and the altitude measured by the GPS/Beidou dual-antenna positioning and orientation attitude measurement equipment and by combining the satellite position;
the control instruction generating unit is used for determining the angle and the direction of the servo motor to be controlled to rotate according to the angle and the direction obtained by the calculating unit, generating a control instruction according to the angle and the direction, and transmitting the control instruction to the antenna controller through an RS232 interface;
the antenna feed system based on servo control in the vehicle-mounted satellite earth station as claimed in claim 5, wherein: the satellite positions are determined from the current time and the known behavior of the satellites in the satellite system over time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371459.4A CN112491462A (en) | 2020-11-30 | 2020-11-30 | Servo control-based antenna feed system in vehicle-mounted satellite ground station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371459.4A CN112491462A (en) | 2020-11-30 | 2020-11-30 | Servo control-based antenna feed system in vehicle-mounted satellite ground station |
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| CN112491462A true CN112491462A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011371459.4A Pending CN112491462A (en) | 2020-11-30 | 2020-11-30 | Servo control-based antenna feed system in vehicle-mounted satellite ground station |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188617Y (en) * | 2006-09-19 | 2009-01-28 | 北京爱科迪信息通讯技术有限公司 | Intelligent portable satellite communication earth station |
| CN102412436A (en) * | 2011-07-13 | 2012-04-11 | 北京爱科迪信息通讯技术有限公司 | Ship-borne satellite antenna system and control method thereof |
| US20150200449A1 (en) * | 2014-01-14 | 2015-07-16 | Viasat, Inc. | Mobile Terminal Antenna Alignment Using Arbitrary Orientation Attitude |
| US20170235303A1 (en) * | 2014-08-18 | 2017-08-17 | Yamaha Hatsudoki Kabushiki Kaisha | Remote control device |
| CN206619692U (en) * | 2017-04-10 | 2017-11-07 | 西安寰达导航科技有限公司 | A kind of vehicle-mounted antenna for satellite communication in motion of S-band |
| CN110808768A (en) * | 2019-10-22 | 2020-02-18 | 中山赛思普电子科技有限公司 | Low earth orbit satellite ground station |
| CN211603906U (en) * | 2020-05-11 | 2020-09-29 | 贵州航天天马机电科技有限公司 | Antenna erecting control system |
-
2020
- 2020-11-30 CN CN202011371459.4A patent/CN112491462A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188617Y (en) * | 2006-09-19 | 2009-01-28 | 北京爱科迪信息通讯技术有限公司 | Intelligent portable satellite communication earth station |
| CN102412436A (en) * | 2011-07-13 | 2012-04-11 | 北京爱科迪信息通讯技术有限公司 | Ship-borne satellite antenna system and control method thereof |
| US20150200449A1 (en) * | 2014-01-14 | 2015-07-16 | Viasat, Inc. | Mobile Terminal Antenna Alignment Using Arbitrary Orientation Attitude |
| US20170235303A1 (en) * | 2014-08-18 | 2017-08-17 | Yamaha Hatsudoki Kabushiki Kaisha | Remote control device |
| CN206619692U (en) * | 2017-04-10 | 2017-11-07 | 西安寰达导航科技有限公司 | A kind of vehicle-mounted antenna for satellite communication in motion of S-band |
| CN110808768A (en) * | 2019-10-22 | 2020-02-18 | 中山赛思普电子科技有限公司 | Low earth orbit satellite ground station |
| CN211603906U (en) * | 2020-05-11 | 2020-09-29 | 贵州航天天马机电科技有限公司 | Antenna erecting control system |
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Application publication date: 20210312 |