CN114531195B - Multi-mode multi-caliber multi-band backpack satellite station - Google Patents
Multi-mode multi-caliber multi-band backpack satellite station Download PDFInfo
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- CN114531195B CN114531195B CN202210149215.4A CN202210149215A CN114531195B CN 114531195 B CN114531195 B CN 114531195B CN 202210149215 A CN202210149215 A CN 202210149215A CN 114531195 B CN114531195 B CN 114531195B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 230000010287 polarization Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims description 22
- 238000005070 sampling Methods 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000004807 localization Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 20
- 238000004891 communication Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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Classifications
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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
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- 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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- 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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a multi-mode multi-caliber multi-band backpack satellite station, which comprises a satellite antenna, an integrated radio frequency assembly and a platform, wherein the integrated radio frequency assembly comprises: an up-conversion power amplifier BUC and a low noise down-conversion amplifier LNB, the platform comprising: modem, multimode detection module, inclinometer, GPS, antenna controller, antenna servo and polarization sensor, multimode detection module includes: the power divider, isolate the direct current module, power supply module, control module, intermediate frequency receive processing module and clock; the invention has simple switching and quick switching time, and can support frequency band switching without tools; the universality is strong, and the unified platform supports feeds with different calibers and different frequency bands; the localization rate is 100%, the cost performance is high, the common platform rate of the two frequency band devices can reach 92%, and the device cost is greatly reduced.
Description
Technical Field
The invention relates to the field of satellite antennas, in particular to a multi-mode multi-caliber multi-band backpack satellite station.
Background
With the development of satellite communication technology, satellite communication starts to enter a civil market, which has higher requirements on a satellite antenna, and as the satellite communication is greatly influenced by environmental changes, the satellite communication difference of different frequency bands is more obvious, such as: ka bandwidth is wide, but is greatly affected by rain fade; the C-band antenna is less affected by rain attenuation, but has higher requirements on the aperture of the antenna; in addition, the novel medium-low orbit satellite belongs to different frequency band networking, and the requirement on bearing the satellite station also needs to meet the requirement on overhead tracking and the like. At present, the traditional single-frequency and single-caliber backpack satellite station can hardly meet the novel satellite communication requirement.
Disclosure of Invention
The invention aims to provide a multi-mode multi-caliber multi-band knapsack satellite station, which aims to solve the requirement that a satellite needs multiple modes and multiple calibers.
A multi-mode multi-aperture multi-band backpack satellite station comprising a satellite antenna, an integrated radio frequency assembly and a platform, the integrated radio frequency assembly comprising: an up-conversion power amplifier BUC and a low noise down-conversion amplifier LNB, the platform comprising: modem, multimode detection module, inclinometer, GPS, antenna controller, antenna servo and polarization sensor, multimode detection module includes: the power divider, isolate the direct current module, power supply module, control module, intermediate frequency receive processing module and clock;
the satellite antenna is connected with the low-noise down-conversion amplifier LNB, the antenna servo and the up-conversion power amplifier BUC and is used for receiving satellite signals and transmitting the satellite signals to the low-noise down-conversion amplifier LNB, receiving signals amplified by the up-conversion power amplifier BUC and transmitting the signals to a satellite, receiving signals which are sent by the antenna servo and drive the satellite antenna to a target position and driving the satellite antenna to the target position;
the low-noise down-conversion amplifier LNB is connected with the power divider and is used for receiving satellite signals sent by the satellite antenna, down-converting the satellite signals into intermediate frequency signals and sending the intermediate frequency signals to the power divider;
the power divider is connected with the direct current blocking module and the intermediate frequency receiving and processing module and is used for receiving the intermediate frequency signal sent by the LNB, dividing the intermediate frequency signal into two parts and respectively transmitting the two parts to the direct current blocking module and the intermediate frequency receiving and processing module;
the direct current blocking module is connected with the modulation and demodulation module and is used for blocking one path of intermediate frequency signal sent by the power divider and inputting the signal into the modulation and demodulation module;
the intermediate frequency receiving and processing module is connected with the control module and is used for receiving one path of intermediate frequency signal sent by the power divider, filtering, amplifying and mixing the intermediate frequency signal, outputting the signal to the main control module and receiving a clock signal sent by a clock;
the control module is connected with the antenna controller and used for capturing, tracking and calculating effective signal power or carrier-to-noise ratio to detect and outputting detection results to the antenna controller through a serial port;
the clock is connected with the control module and the intermediate frequency receiving and processing module and is used for providing clock signals for the intermediate frequency receiving and processing module and the control module;
the inclinometer is connected with the antenna control module and is used for detecting the pitching angle of the antenna and sending the pitching angle to the antenna controller;
the GPS is connected with the antenna control module and used for determining the longitude and latitude values of the satellite station and sending the longitude and latitude values to the antenna controller;
the polarization sensor is connected with the antenna controller and used for transmitting the polarization rotation range to the antenna controller;
the antenna controller is connected with the Modem Modem and is used for receiving a detection result sent by the control module through the serial port, an antenna pitching angle detected by the inclinometer, a longitude and latitude value of the satellite station determined by the GPS, a polarization value calculated by the polarization sensor and satellite parameters sent by the Modem Modem, analyzing a strongest position of the satellite signal according to the detection result sent by the serial port, the antenna pitching angle detected by the inclinometer, the longitude and latitude value and the polarization rotation range of the satellite station determined by the GPS, sending the strongest position information of the satellite signal to the antenna servo module, receiving the longitude and latitude value of the satellite station determined by the GPS and sending the strongest position information to the Modem Modem;
the antenna servo module is connected with the antenna controller and is used for receiving the strongest position information of the satellite signals sent by the antenna controller and sending signals for driving the satellite antenna to reach the target position to the satellite antenna;
the Modem Modem is connected with the antenna controller and the up-conversion power amplifier BUC and is used for receiving and demodulating the intermediate frequency signal sent by the DC blocking module to obtain satellite parameters, sending the satellite parameters to the antenna controller, receiving the longitude and latitude values sent by the antenna controller, modulating and encoding the longitude and latitude value signals and sending the longitude and latitude value signals to the up-conversion power amplifier BUC;
the up-conversion power amplifier BUC is connected with the satellite antenna and is used for receiving signals which are sent by the Modem and are used for modulating and encoding the longitude and latitude value signals, amplifying the signals and inputting the signals into the satellite antenna;
the power supply module is connected with the power divider, the control module and the antenna controller and is used for supplying power to the power divider, the control module and the antenna controller and supplying power to the up-conversion power amplifier BUC, the low-noise down-conversion amplifier LNB, the Modem Modem, the multimode detection module, the inclinometer, the GPS, the antenna servo, the polarization sensor, the direct current blocking module, the power supply module, the intermediate frequency receiving and processing module and the clock through the power divider, the control module and the antenna controller.
The embodiment of the invention has the advantages of simple realization, low cost and support of multi-caliber and multi-platform switching.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a hardware schematic of a multimode, multi-aperture, multi-band piggyback satellite station according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a feed-coupling circuit platform of a multimode, multi-aperture, multi-band piggyback satellite station according to an embodiment of the present invention;
FIG. 3 is a schematic hardware design of a multi-mode multi-aperture multi-band piggyback satellite station according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a multi-module detection module of a multi-module multi-aperture multi-band back-carried satellite station according to an embodiment of the present invention;
FIG. 5 is a schematic platform diagram of a multimode, multi-aperture, multi-band, piggyback satellite station according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a fast handoff module of a multi-mode, multi-aperture, multi-band back-carried satellite station according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an installation assembly of a multimode, multi-aperture, multi-band back-carried satellite station according to an embodiment of the invention;
FIG. 8 is a schematic diagram of a satellite-to-satellite diagram of a multi-mode, multi-aperture, multi-band back-carried satellite station according to an embodiment of the present invention;
FIG. 9 is a Ka antenna feed schematic diagram of a multimode, multi-aperture, multi-band, back-carried satellite station according to an embodiment of the invention;
FIG. 10 is a Ku antenna feed schematic diagram of a multimode, multi-aperture, multi-band, back-carried satellite station in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of a 0 degree azimuth of a multimode, multi-aperture, multi-band backpack satellite station of an embodiment of the present invention;
fig. 12 is a schematic view of a 130 degree azimuth of a multimode, multi-aperture, multi-band backpack satellite station according to an embodiment of the invention.
Reference numerals illustrate:
1: BUC;2: an LNB;3: a feed coupler; 4: medom;5: a DC blocking module; 6: a power supply module; 7: a power divider; 8: an intermediate frequency receiving and processing module; 9: a clock; 10: a control module; 11: an A/D sampling module; 12: an inclinometer; 13: a GPS;14: an antenna controller; 15: a polarization sensor; 16: an antenna servo; 17: a satellite antenna.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Device embodiment
According to an embodiment of the present invention, a multimode, multi-caliber and multi-band back-carried satellite station is provided, and fig. 1 is a hardware schematic diagram of the multimode, multi-caliber and multi-band back-carried satellite station according to the embodiment of the present invention, as shown in fig. 1, specifically including: satellite antenna 17, an integrated radio frequency assembly and a platform, the integrated radio frequency assembly comprising: an up-conversion power amplifier BUC1 and a low noise down-conversion amplifier LNB 2, the platform comprising: modem4, multimode detection module, inclinometer 12, GPS13, antenna controller 14, antenna servo 16, and polarization sensor 15, the multimode detection module includes: the power divider 7, the DC blocking module 5, the power supply module 6, the control module 10, the intermediate frequency receiving and processing module 8 and the clock 9;
a satellite antenna 17, connected to the low noise down-conversion amplifier LNB 2, the antenna servo 16, and the up-conversion power amplifier BUC1, for receiving satellite signals and transmitting the satellite signals to the low noise down-conversion amplifier LNB 2, receiving signals amplified by the up-conversion power amplifier BUC1, and transmitting the signals to a satellite, receiving signals sent by the antenna servo 16 to drive the satellite antenna to a target position, and driving the satellite antenna to the target position;
the low-noise down-conversion amplifier LNB 2 is connected with the power divider 7 and is used for receiving satellite signals sent by the satellite antenna 17, down-converting the satellite signals into intermediate frequency signals and sending the intermediate frequency signals to the power divider 7;
the power divider 7 is connected with the direct current blocking module 5 and the intermediate frequency receiving and processing module 8, and is used for receiving the intermediate frequency signal sent by the low-noise down-conversion amplifier LNB 2, dividing the intermediate frequency signal into two parts and respectively transmitting the two parts to the direct current blocking module 5 and the intermediate frequency receiving and processing module 8;
the direct current blocking module 5 is connected with the modulation and demodulation module and is used for blocking direct current of one path of intermediate frequency signal sent by the power divider 7 and inputting the signal into the modulation and demodulation module;
the intermediate frequency receiving and processing module 8 is connected with the control module 10 and is used for receiving one path of intermediate frequency signal sent by the power divider 7, filtering, amplifying and mixing the intermediate frequency signal, outputting the signal to the main control module and receiving a clock 9 signal sent by the clock 9;
the control module 10 is connected with the antenna controller 14, and is used for capturing, tracking and calculating effective signal power or carrier-to-noise ratio for detection and outputting detection results to the antenna controller 14 through a serial port;
the clock 9 is connected with the control module 10 and the intermediate frequency receiving and processing module 8 and is used for providing clock signals for the intermediate frequency receiving and processing module 8 and the control module 10;
the inclinometer 12 is connected with the antenna control module 10, and is used for detecting the pitching angle of the antenna and sending the pitching angle to the antenna controller 14;
a GPS13 connected to the antenna control module 10 for determining the longitude and latitude values of the satellite station and transmitting them to the antenna controller 14;
a polarization sensor 15 connected to the antenna controller 14 for transmitting a polarization rotation range to the antenna controller 14;
the antenna controller 14 is connected with the Modem4, and is configured to receive a detection result sent by the control module 10 through the serial port, an antenna pitch angle detected by the inclinometer 12, a longitude and latitude value of a satellite station determined by the GPS13, a polarization value calculated by the polarization sensor 15, and a satellite parameter sent by the Modem4, analyze a strongest position of a satellite signal according to the detection result sent by the serial port, the antenna pitch angle detected by the inclinometer 12, the longitude and latitude value of the satellite station determined by the GPS13, and a polarization rotation range, send the strongest position information of the satellite signal to the antenna servo 16 module, and receive the longitude and latitude value of the satellite station determined by the GPS13 and then send the strongest position information to the Modem4;
the antenna servo 16 module is connected with the antenna controller 14 and is used for receiving the strongest position information of the satellite signals sent by the antenna controller 14 and sending signals for driving the satellite antenna 17 to reach the target position to the satellite antenna 17;
the Modem Modem4 is connected with the antenna controller 14 and the up-conversion power amplifier BUC1 and is used for receiving and demodulating the intermediate frequency signal sent by the DC blocking module 5 to obtain satellite parameters, sending the satellite parameters to the antenna controller 14, receiving the longitude and latitude values sent by the antenna controller 14, modulating and encoding the longitude and latitude value signals and sending the longitude and latitude value signals to the up-conversion power amplifier BUC1;
the up-conversion power amplifier BUC1 is connected with the satellite antenna 17 and is used for receiving signals which are sent by the Modem4 and are subjected to modulation and coding, and then the signals are amplified and input into the satellite antenna 17;
the power supply module 6 is connected with the power divider 7, the control module 10 and the antenna controller 14, and is used for supplying power to the power divider 7, the control module 10 and the antenna controller 14 and supplying power to the up-conversion power amplifier BUC1, the low-noise down-conversion amplifier LNB 2, the Modem Modem4, the multimode detection module, the inclinometer 12, the GPS13, the antenna servo 16, the polarization sensor 15, the DC blocking module 5, the power supply module 6, the intermediate frequency receiving processing module and the clock 9 through the power divider 7, the control module 10 and the antenna controller 14.
The control module 10 may also be connected to the antenna controller 14 through an a/D sampling module, and the control module 10 is specifically configured to: signal capturing, tracking and calculating effective signal power or carrier-to-noise ratio and analog output to an A/D sampling module, wherein the A/D sampling module is specifically used for: the analog signal is received and converted into a digital signal, which is a detection result, and the detection result is transmitted to the antenna controller 14. The receiving antenna controller 14 transmits a detection mode signal to control the detection mode.
The platform is equipped with quick switch module, is equipped with two left and right slide ways, and a slide way is fixed unchanged, and opposite side slide way corresponds the locking plate, the locking plate is equipped with a locking spanner, through spanner up-and-down motion, promotes the locking plate side-to-side motion, and integrated radio frequency subassembly is equipped with the slider that the slide way corresponds, is connected with the platform through the slider, and satellite antenna 17 is connected with integrated radio frequency subassembly.
Fig. 2 is a schematic diagram of a feed-coupling circuit platform of a multimode, multi-aperture, multi-band back-carried satellite station according to an embodiment of the invention, including: a first switch for disconnecting the dc blocking module 5 from the modem module and a second switch for disconnecting the low noise down-conversion amplifier LNB 2 from the power divider 7;
and the feed coupling circuit is connected with the low-noise down-conversion amplifier LNB 2 and is used for dividing the intermediate frequency signal output by the low-noise down-conversion amplifier LNB 2 into two paths, one path is connected with the Modem4, and the other path is connected with the power divider 7.
The feed coupling circuit is specifically configured to divide the intermediate frequency signal output by the low noise down-conversion amplifier LNB 2 into two paths with different signal attenuation, where a path with small signal attenuation is connected to the Modem4, and a path with large signal attenuation is connected to the input power divider 7.
The above technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Along with the development of novel satellite communication such as medium-low orbit satellites and the like, the invention is designed for supporting over-top tracking and supporting a plurality of systems and multiple calibers of satellite antenna 17 aiming at the problems of the traditional single satellite station. The system adopts a multimode signal tracking mode, the whole system is simple to realize, the expansion capacity is strong, the application requirements of high orbit satellites in the current main stream are combined, a satellite station supports multi-caliber and multi-frequency band switching on the basis of a main control platform, and the system adopts an integrated multimode signal detection module.
The hardware of the embodiment of the invention mainly comprises a satellite antenna 17, an LNB low noise amplifier\BUC up-conversion power amplifier, an antenna controller 14, a servo, a polarization sensor 15, an inclinometer 12, a GPS13, a multimode detection module, a power divider 7 and the like, wherein the satellite antenna 17 can support an antenna with the caliber of 0.45-1.2 m according to actual application scenes, the BUC\LNB is matched with different models according to different services and frequency bands, and if satellite stations with different frequency bands and same caliber are shared by the satellite station side lobes, only the main lobe, the feed source, the BUC and the LNB are replaced.
Fig. 3 is a schematic hardware design diagram of a multi-mode multi-aperture multi-band back-carried satellite station according to an embodiment of the present invention, and as shown in fig. 3, a dashed line represents another implementation method.
After receiving satellite signals, the traditional satellite station combines with the GPS13 to obtain the longitude and latitude values of the equipment, then calculates the theoretical azimuth, elevation and polarization values of the satellite station, simultaneously combines with the beacon machine and the DVB value to continuously adjust the azimuth and elevation values of the satellite station, and finally points the satellite station to the strongest position of the satellite signals. The traditional satellite station adopts independent DVB and beacon machine, has large size, heavier weight and higher price, and the invention adopts an integrated multi-mode detection module, supports DVB and beacon detection, and can output analog detection signals and digitally output the analog detection signals to a main control module of the satellite station.
Fig. 4 is a schematic diagram of multi-module detection of a multi-module multi-aperture multi-band back-carried satellite station according to an embodiment of the present invention, as shown in fig. 4:
the satellite station receives satellite signals, down-converts the satellite signals into intermediate frequency signals through an LNB (Low noise ratio), inputs the intermediate frequency signals through a power divider 7, filters, amplifies and mixes the intermediate frequency signals through an intermediate frequency receiving module, and then carries out digital sampling, signal capturing, tracking and calculating effective signal power or carrier-to-noise ratio through a main control unit, so that DVB carrier-to-noise ratio, beacon or continuous wave detection can be completed.
Compared with the traditional independent DVB and beacon machine, the multimode detection module can be designed and realized independently, the signal detection mode can be selected automatically according to the actual satellite station mode, the module can be controlled to be opened and closed through a protocol, and after the system performs satellite feeding, the servo control module 10 can close the module so as to achieve the purpose of reducing power consumption.
Fig. 5 is a schematic diagram of a platform of a multimode, multi-caliber and multi-band back-carried satellite station according to an embodiment of the present invention, as shown in fig. 5, a unified servo tracking and control platform is adopted, software and hardware are common, platform switching is performed through a fast switching unit, and fig. 6 is a schematic diagram of a fast switching module of the multimode, multi-caliber and multi-band back-carried satellite station according to an embodiment of the present invention, as shown in fig. 6, and the detailed design is as follows:
the two slide ways of the platform are switched, one slide way is fixed, the other slide way corresponds to the locking plate, a locking wrench is arranged beside the slide way, and the locking plate is pushed to move left and right by the upward and downward movement of the locking wrench. When a satellite station with a certain caliber antenna or a certain frequency range is required to be started, the integrated radio frequency component is only required to be placed at a proper position along the slideway, and the integrated radio frequency component can be fixed on a unified platform of the satellite station by manually rotating and switching a locking spanner. Then installing side lobes, powering up to track the satellite, and starting satellite service.
FIG. 7 is a schematic diagram of an installation assembly of a multimode, multi-aperture, multi-band back-carried satellite station according to an embodiment of the invention;
fig. 8 is a schematic diagram of a satellite-to-satellite diagram of a multi-mode multi-aperture multi-band back-carried satellite station according to an embodiment of the present invention, as shown in fig. 8.
FIG. 9 is a Ka antenna feed schematic diagram of a multimode, multi-aperture, multi-band, back-carried satellite station according to an embodiment of the invention; as shown in fig. 9.
FIG. 10 is a Ku antenna feed schematic diagram of a multimode, multi-aperture, multi-band, back-carried satellite station in accordance with an embodiment of the present invention; as shown in fig. 9.
The integrated radio frequency assembly is arranged on a platform, and then the side valve pair star is arranged.
Other modes (X, C, etc.) are that the same integrated radio frequency assembly ka and ku is switched, and the antennas with different aperture can be switched by only replacing the integrated radio frequency assembly and the antenna surface.
FIG. 11 is a schematic view of a 0 degree azimuth of a multimode, multi-aperture, multi-band backpack satellite station of an embodiment of the present invention;
fig. 12 is a schematic view of a 130 degree azimuth of a multimode, multi-aperture, multi-band backpack satellite station according to an embodiment of the invention.
The fast switching module can rotate with the integrated component and the antenna, so as to meet the application requirements of low-orbit satellites in the later main stream, and so as to complete overhead tracking, the pitching degree of freedom operation range adopted by the embodiment of the invention is as follows: 0 to 130 deg., larger than a typical portable satellite antenna. Meanwhile, the software strategically adjusts the azimuth in advance when the satellite is over-top, and fine-tunes the pitching, so that the basic link is not interrupted, then the over-top application requirement can be met by carrying out system fine-tuning according to the modem and the carrier signal intensity, and the function is feasible, achieves the expected effect and can be popularized in a large area through verification of relevant constellation tests.
The invention has simple realization and low cost, the traditional satellite station also has support switching, but the realization is simple and can not be realized quickly, most of the satellite stations need field support of equipment manufacturers, and equipment users can not finish the support switching. While the majority of the current supporting multi-aperture, multi-support handover remains theoretically demonstrated.
The switching is simple, the switching time is quick, and the switching of the frequency bands can be supported without tools; the universality is strong, and the unified platform supports feeds with different calibers (0.45-1.2 m antenna surface) and different frequency bands; the localization rate is 100%, the whole product is a domestic device, and the dependence on foreign high technology is eliminated under the current complex international situation; the cost performance is high, the common platform rate of two frequency band devices can reach 92%, and the device cost is greatly reduced;
at present, there is a great market demand for emergency satellite communication systems, especially for mobile communication services. The multi-mode multi-caliber satellite station is the market demand in the process of development, so a series of innovations are carried out in the aspects of intellectualization and miniaturization of the product.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; and these modifications or alternations are made to the embodiments of the present invention without departing from the spirit of the corresponding technical solutions.
Claims (8)
1. The utility model provides a multimode, multi-caliber and multi-band backpack satellite station which is characterized in that comprises a satellite antenna, an integrated radio frequency component and a platform, wherein the integrated radio frequency component comprises: an up-conversion power amplifier BUC and a low noise down-conversion amplifier LNB, the platform comprising: modem, multimode detection module, inclinometer, GPS, antenna controller, antenna servo and polarization sensor, multimode detection module includes: the power divider, isolate the direct current module, power supply module, control module, intermediate frequency receive processing module and clock;
the satellite antenna is connected with the low-noise down-conversion amplifier LNB, the antenna servo and the up-conversion power amplifier BUC and is used for receiving satellite signals and transmitting the satellite signals to the low-noise down-conversion amplifier LNB, receiving signals amplified by the up-conversion power amplifier BUC and transmitting the signals to a satellite, receiving signals which are sent by the antenna servo and drive the satellite antenna to a target position and driving the satellite antenna to the target position;
the low-noise down-conversion amplifier LNB is connected with the power divider and is used for receiving satellite signals sent by the satellite antenna, down-converting the satellite signals into intermediate frequency signals and sending the intermediate frequency signals to the power divider;
the power divider is connected with the direct current blocking module and the intermediate frequency receiving and processing module and is used for receiving the intermediate frequency signal sent by the LNB, dividing the intermediate frequency signal into two parts and respectively transmitting the two parts to the direct current blocking module and the intermediate frequency receiving and processing module;
the direct current blocking module is connected with the modulation and demodulation module and is used for blocking one path of intermediate frequency signal sent by the power divider and inputting the signal into the modulation and demodulation module;
the intermediate frequency receiving and processing module is connected with the control module and is used for receiving one path of intermediate frequency signal sent by the power divider, filtering, amplifying and mixing the intermediate frequency signal, outputting the signal to the main control module and receiving a clock signal sent by a clock;
the control module is connected with the antenna controller and used for capturing, tracking and calculating effective signal power or carrier-to-noise ratio to detect and outputting detection results to the antenna controller through a serial port;
the clock is connected with the control module and the intermediate frequency receiving and processing module and is used for providing clock signals for the intermediate frequency receiving and processing module and the control module;
the inclinometer is connected with the antenna control module and is used for detecting the pitching angle of the antenna and sending the pitching angle to the antenna controller;
the GPS is connected with the antenna control module and used for determining the longitude and latitude values of the satellite station and sending the longitude and latitude values to the antenna controller;
the polarization sensor is connected with the antenna controller and used for transmitting the polarization rotation range to the antenna controller;
the antenna controller is connected with the Modem Modem and is used for receiving a detection result sent by the control module through the serial port, an antenna pitching angle detected by the inclinometer, a longitude and latitude value of the satellite station determined by the GPS, a polarization value calculated by the polarization sensor and satellite parameters sent by the Modem Modem, analyzing a strongest position of the satellite signal according to the detection result sent by the serial port, the antenna pitching angle detected by the inclinometer, the longitude and latitude value and the polarization rotation range of the satellite station determined by the GPS, sending the strongest position information of the satellite signal to the antenna servo module, receiving the longitude and latitude value of the satellite station determined by the GPS and sending the strongest position information to the Modem Modem;
the antenna servo module is connected with the antenna controller and is used for receiving the strongest position information of the satellite signals sent by the antenna controller and sending signals for driving the satellite antenna to reach the target position to the satellite antenna;
the Modem Modem is connected with the antenna controller and the up-conversion power amplifier BUC and is used for receiving and demodulating the intermediate frequency signal sent by the DC blocking module to obtain satellite parameters, sending the satellite parameters to the antenna controller, receiving the longitude and latitude values sent by the antenna controller, modulating and encoding the longitude and latitude value signals and sending the longitude and latitude value signals to the up-conversion power amplifier BUC;
the up-conversion power amplifier BUC is connected with the satellite antenna and is used for receiving signals which are sent by the Modem and are used for modulating and encoding the longitude and latitude value signals, amplifying the signals and inputting the signals into the satellite antenna;
the power supply module is connected with the power divider, the control module and the antenna controller and is used for supplying power to the power divider, the control module and the antenna controller and supplying power to the up-conversion power amplifier BUC, the low-noise down-conversion amplifier LNB, the Modem Modem, the multimode detection module, the inclinometer, the GPS, the antenna servo, the polarization sensor, the direct current blocking module, the power supply module, the intermediate frequency receiving and processing module and the clock through the power divider, the control module and the antenna controller.
2. The satellite station of claim 1, wherein the platform further comprises: a first switch for disconnecting the dc blocking module from the modem module, and a second switch for disconnecting the low noise down-conversion amplifier LNB from the power divider;
and the feed coupling circuit is connected with the LNB and is used for dividing the intermediate frequency signal output by the LNB into two paths, one path is connected with the Modem, and the other path is connected with the power divider.
3. The satellite station according to claim 2, wherein the feed coupling circuit is specifically configured to divide the intermediate frequency signal output by the low noise down-conversion amplifier LNB into two paths with different signal attenuation, one path with small signal attenuation is connected to the Modem, and the other path with large signal attenuation is connected to the power divider.
4. The satellite station of claim 1, wherein the control module is coupled to the antenna controller via an a/D sampling module, the control module being configured to: signal capturing, tracking and calculating effective signal power or carrier-to-noise ratio and analog output to an A/D sampling module, wherein the A/D sampling module is specifically used for: the analog signal is received and then converted into a digital signal, the digital signal is a detection result, and the detection result is sent to the antenna controller.
5. The satellite station of claim 1, wherein the control module is configured to: the receiving antenna controller sends a detection mode signal to control the detection mode.
6. The satellite station according to claim 1, wherein the platform is provided with a fast switching module, provided with two left and right slides, one of which is fixed and the other of which corresponds to the locking plate, and the locking plate is provided with a locking wrench which moves up and down by pushing the locking plate to move left and right.
7. The satellite station of claim 6, wherein the integrated radio frequency assembly is provided with a slider corresponding to the slideway, and is connected to the platform by the slider.
8. The satellite station of claim 7, wherein the satellite antenna is coupled to an integrated radio frequency component.
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| CN115412151A (en) * | 2022-08-01 | 2022-11-29 | 中国电信股份有限公司 | Satellite communication method and device and station control equipment |
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