CN215956384U - Portable detachable low-orbit satellite gateway station system - Google Patents
Portable detachable low-orbit satellite gateway station system Download PDFInfo
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- CN215956384U CN215956384U CN202122393775.8U CN202122393775U CN215956384U CN 215956384 U CN215956384 U CN 215956384U CN 202122393775 U CN202122393775 U CN 202122393775U CN 215956384 U CN215956384 U CN 215956384U
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Abstract
The utility model relates to the field of communication, and discloses a portable detachable low-orbit satellite gateway station system, which comprises a detachable antenna subsystem, a channel subsystem, a time-frequency and positioning and orienting subsystem and a baseband subsystem, wherein the detachable antenna subsystem is connected with the channel subsystem; the detachable antenna subsystem comprises a detachable antenna surface, a structural seat frame, a Ka-band feed source, a leveling bracket, a driving system and a control system; the channel subsystem comprises a KaBUC and a KaLNB; the baseband subsystem includes a modem; the time-frequency and positioning and orientation subsystem comprises a positioning antenna, a time-frequency and positioning receiver and a GPS/Beidou signal receiving antenna, wherein the time-frequency and positioning receiver is respectively connected with the positioning antenna and the GPS/Beidou signal receiving antenna. The utility model adopts Ka frequency band to realize satellite feed link communication, and has the automatic tracking capability of a low-orbit satellite with the height of more than 400 Km; with the small BUCs and LNBs, the entire portable gateway station system can be disassembled and quickly assembled.
Description
Technical Field
The utility model relates to the field of communication, in particular to a portable detachable low-orbit satellite gateway station system.
Background
At present, with the increasing number of low orbit satellites, the mobile communication of the low orbit satellites has the characteristic of line-of-sight communication, and a user terminal, a gateway station and the satellites are required to be in line-of-sight, otherwise, the communication cannot be realized. Conventional gateway stations employ a fixed/mobile station approach. The fixed gateway station has the defects of high cost, long period, poor maneuverability and low wartime survival rate, and the coverage range of the fixed station is fixed. The mobile station needs a special chassis or a trailer, needs special driving, has a large target, and has the defects of long construction period and high cost. The traditional gateway station mode cannot meet the requirements of satellite communication ground stations with low cost, rapidness, flexibility and high survival capability in wartime and increasingly wide low-orbit satellite testing.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the conventional low-earth-orbit satellite gateway station, the utility model provides a portable detachable low-earth-orbit satellite gateway station system, which is constructed into a set of portable detachable gateway station system which is highly integrated and integrated, can meet the transportation requirements of public transport means after being folded and collected, can be deployed in emergency, has low cost and is convenient to test, supports the Ka feed communication of a low-earth-orbit satellite, and can realize the network communication of low-earth-orbit satellite data and the closed loop of the gateway station.
The utility model is realized by the following technical scheme:
a portable detachable low-orbit satellite gateway station system comprises a detachable antenna subsystem, a channel subsystem, a time-frequency and positioning and orientation subsystem and a baseband subsystem;
the detachable antenna subsystem comprises a detachable antenna surface, a structural seat frame, a Ka-band feed source, a leveling bracket, a driving system and a control system, wherein the bottom of the detachable antenna surface is detachably connected with the leveling bracket, the leveling bracket is detachably connected with the structural seat frame, the Ka-band feed source and the leveling bracket are respectively positioned at two sides of the detachable antenna surface, the Ka-band feed source is detachably arranged at the middle position of the detachable antenna surface, the control system controls the leveling bracket to rotate on the horizontal plane and the vertical plane through the driving system, and meanwhile, the control system is connected with the channel subsystem and the baseband subsystem;
the channel subsystem comprises a Ka BUC and a Ka LNB;
the baseband subsystem comprises a modem, and the modem is connected with the Ka waveband feed source through the Ka BUC and the Ka LNB respectively;
the time-frequency and positioning and orientation subsystem comprises a positioning antenna, a time-frequency and positioning receiver and a GPS/Beidou signal receiving antenna, wherein the time-frequency and positioning receiver is respectively connected with the positioning antenna and the GPS/Beidou signal receiving antenna, and the positioning antenna is detachably mounted on the detachable antenna surface.
In the technical scheme, the orientation of the detachable antenna surface is positioned through the positioning antenna, namely the orientation of the Ka-band feed source is positioned, the positioning information is transmitted to the time-frequency and positioning receiver, the driving system is driven through the control system, and then the orientation of the leveling bracket is adjusted to adjust the orientation and the pitching angle of the detachable antenna surface; the structure seat frame is used for supporting on the ground, and the Ka-band feed source is used for completing low-orbit satellite tracking and transmitting and receiving Ka-band signals; the GPS/Beidou signal receiving antenna is used for receiving GPS/Beidou satellite signals, realizing the function of measuring the positioning and orientation postures of the double antennas, providing reliable frequency and time standard signals and distributing the signals to each device for use; the channel subsystem completes frequency conversion and power amplification of channel signals; the baseband subsystem completes the medium-frequency modulation sending of Ka-band uplink feed data, the medium-frequency demodulation and the network sending of Ka-band downlink feed data; the antenna face is detachable, the Ka waveband feed source, the leveling support and the positioning antenna are connected with the antenna face in a detachable connection mode, and the leveling support is connected with the structural seat frame in a detachable connection mode and is convenient to detach.
Preferably, the detachable antenna face is in a paraboloid shape, and the Ka-band feed source is located in the center of a concave surface of the paraboloid detachable antenna face.
Thus, the antenna face can better collect signals, and the Ka band feed source can better receive signals.
As optimization, the detachable antenna surface is composed of 8 detachable split bodies.
Thus, the disassembly and the placement are convenient.
Preferably, the diameter of the detachable antenna face is not less than 1.8 m.
In this way, the signal collected by the antenna surface can be made wider.
As an optimization, the baseband subsystem further includes an output linear amplifier and an access linear amplifier, the output end of the modem is connected to the Ka BUC and the core network through the output linear amplifier, and the input end of the modem is connected to the Ka LNB and the access network/core network through the access linear amplifier.
Thus, the output linear amplifier and the access linear amplifier serve to amplify the radio frequency signal.
Preferably, the positioning antenna is detachably mounted on the edge of the detachable antenna face.
Thus, the signal collection of the Ka-band feed source is not interfered.
Preferably, the structural mount is a deployable fixed support cradle.
In this way, the storage of the structural seat frame is facilitated.
As optimization, the levelable bracket and the driving system jointly form an X-Y axis antenna pedestal.
Thus, the X-Y axis antenna pedestal is mature equipment and convenient to prepare.
As optimization, the transmitting frequency band of the Ka-band feed source is 27.5 GHz-30.0 GHz, and the receiving frequency band of the Ka-band feed source is 17.7 GHz-20.2 GHz.
And as optimization, the time-frequency and positioning receiver is also respectively connected with the control system, the access linear amplifier, the Ka LNB and the Ka BUC.
In this way, the time and frequency and positioning receiver transmits the received signals to the control system, so that the control system controls the execution of the driving system.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the utility model adopts Ka frequency band to realize satellite feed link communication, and has the automatic tracking capability of a low-orbit satellite with the height of more than 400 Km; the whole portable gateway station system can be disassembled and can be assembled quickly by being provided with the small BUC and the LNB;
the utility model has high integration, rapid and flexible deployment, supports low-orbit Ka frequency band feed communication service, has an access network core network, provides application service capability of service data such as mobile communication, broadband communication, Internet of things communication, navigation enhancement and the like, and provides a new solution for low-orbit constellation satellite communication;
the utility model solves the defects of high construction cost, long period, poor maneuverability and the like of the fixed station; the problems that the construction period of the mobile station is long, the cost is high, and the road access and driving conditions are needed are solved; the requirements of low-orbit satellite constellation Ka feed data closed-loop network communication and low-orbit satellite testing tasks are met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a portable detachable low earth orbit satellite gateway station system according to the utility model;
fig. 2 is a flow chart of a process of installing a portable detachable low earth orbit satellite gateway station system to a satellite according to the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
It should be noted that the detachable connection in the present application may be implemented by using existing methods such as a threaded connection and a snap connection, and a person skilled in the art may select a specific detachable connection method according to actual situations.
Example 1
This embodiment 1 provides a portable detachable low earth orbit satellite gateway station system, as shown in fig. 1, which includes a detachable antenna subsystem 100, a channel subsystem 200, a time-frequency and positioning-orientation subsystem 300 and a baseband subsystem 400;
dismantle antenna subsystem including dismantling antenna face 101, structure seat frame 102, Ka wave band feed source 103, adjustable flat support 104, actuating system 105 and control system 106, the bottom of dismantling antenna face 101 with adjustable flat support 104 can dismantle the connection, adjustable flat support 104 with structure seat frame 102 can dismantle the connection, Ka wave band feed source 103 with adjustable flat support 104 is located respectively can dismantle the both sides of antenna face 101, Ka wave band feed source 103 can dismantle the setting and be in can dismantle the intermediate position of antenna face 101, control system 106 passes through actuating system 105 control adjustable flat support 104 rotates at horizontal plane and vertical face, simultaneously, control system 106 with channel subsystem 200 and baseband subsystem 400 are connected, and is specific, and control system and Ka LNB, Ka BUC, modem are connected. The detachable antenna surface 101 is 1.8m in caliber and is made of a composite material for manufacturing the antenna surface, so that signals collected by the antenna surface are wider, the detachable antenna surface can be rapidly detached and collected, and the detachable antenna surface meets the aviation/railway transportation conditions after being detached and collected. Specifically, the connection mode of the detachable antenna surface and the feed source may refer to the technology in the existing document "CN 201420229606.8 microwave parabolic antenna reflector with a split structure", specifically, the detachable antenna surface 101 is composed of 8 split detachable split bodies, which is not described herein again.
The channel subsystem 200 comprises a Ka BUC201 and a Ka LNB 202; the Ka BUC and Ka LNB are small BUCs and LNBs, which are conventional devices on the market, such as the BUCs and LNBs of the bodada company.
The baseband subsystem 400 comprises a modem 401, and the modem 401 is connected with the Ka band feed source 103 through the Ka BUC201 and the Ka LNB202, respectively;
the time-frequency and positioning and orientation subsystem 300 comprises a positioning antenna 301, a time-frequency and positioning receiver 302 and a GPS/Beidou signal receiving antenna 303, wherein the time-frequency and positioning receiver 302 is respectively connected with the positioning antenna 301 and the GPS/Beidou signal receiving antenna 303, and the positioning antenna 301 is detachably mounted on the detachable antenna surface 101.
In the technical scheme, the orientation of the detachable antenna surface is positioned through the positioning antenna, namely the orientation of the Ka-band feed source is positioned, the positioning information is transmitted to the time-frequency and positioning receiver, the driving system is driven through the control system, and then the orientation of the leveling bracket is adjusted to adjust the orientation and the pitching angle of the detachable antenna surface; the structure seat frame is used for supporting on the ground, and the Ka-band feed source is used for completing low-orbit satellite tracking and transmitting and receiving Ka-band signals; the GPS/Beidou signal receiving antenna is used for receiving GPS/Beidou satellite signals, realizing the function of measuring the positioning and orientation postures of the double antennas, providing reliable frequency and time standard signals and distributing the signals to each device for use; the channel subsystem completes frequency conversion and power amplification of channel signals; the baseband subsystem completes the medium-frequency modulation sending of Ka-band uplink feed data, the medium-frequency demodulation and the network sending of Ka-band downlink feed data; the antenna face is detachable, the Ka waveband feed source, the leveling support and the positioning antenna are connected with the antenna face in a detachable connection mode, and the leveling support is connected with the structural seat frame in a detachable connection mode and is convenient to detach.
In this embodiment, the detachable antenna surface 101 is a paraboloid, and the Ka band feed source 103 is located in the center of the concave surface of the paraboloid detachable antenna surface 101.
Thus, the antenna face can better collect signals, and the Ka band feed source can better receive signals.
In this embodiment, the Ka band feed 103 is located in the center of the concave surface of the detachable antenna surface 101 of the paraboloid.
Thus, the Ka-band feed can be enabled to better receive signals.
In this embodiment, the baseband subsystem 400 further includes an output linear amplifier 402 and an access linear amplifier 403, an output end of the modem 401 is connected to the Ka BUC201 and the core network 500 through the output linear amplifier 402, and an input end of the modem 401 is connected to the Ka LNB202 and the access network/core network 500 through the access linear amplifier 403. The baseband subsystem comprises a high-speed modem, an input and output port of the high-speed modem is integrated with a linear amplifier for amplifying radio-frequency signals, an optical fiber and an RJ45 interface are provided, a TCP/IP protocol is supported, intermediate-frequency modulation transmission of Ka frequency band uplink feed data and intermediate-frequency demodulation and network transmission of Ka frequency band downlink feed data are completed, and the high-speed modem can be accessed to a ground access network and a core network by using the optical fiber or a network cable.
Thus, the output linear amplifier and the access linear amplifier serve to amplify the radio frequency signal.
In this embodiment, the positioning antenna 300 is detachably mounted on the edge of the detachable antenna surface 101.
Thus, the signal collection of the Ka-band feed source is not interfered.
In this embodiment, the structural mount 102 is a deployable and fixed support bracket. The expandable fixed type is understood to mean that the support frame is a frame which can be expanded or folded in a foldable or foldable way, and meanwhile, when the support frame is expanded, the support frame can stand on the ground in an expanded state, such as a folding frame on the market.
In this way, the storage of the structural seat frame is facilitated.
In this embodiment, the leveling bracket 104 and the driving system 105 together form an X-Y axis antenna mount. The X-Y axis antenna mount is an existing device, and reference may be made to the technology of "CN 201210308012.1 an X-Y axis antenna mount" in the existing document, where a driving system is a servo motor in the document, and meanwhile, the X-Y axis antenna mount and the structural mount are detachably connected, which may also be understood that an X axis mechanism in the document is assembled on a base by means of clamping or screwing, and the like, and will not be described too much here.
Thus, the X-Y axis antenna pedestal is mature equipment and convenient to prepare.
In this embodiment, the transmitting frequency band of the Ka band feed source 103 is 27.5GHz to 30.0GHz, and the receiving frequency band of the Ka band feed source 103 is 17.7GHz to 20.2 GHz.
In this embodiment, the time-frequency and positioning receiver 302 is further connected to the control system 106, the access linear amplifier 403, the Ka LNB202, and the Ka BUC201, respectively.
In this way, the time and frequency and positioning receiver transmits the received signals to the control system, so that the control system controls the execution of the driving system.
In summary, the time-frequency and positioning and orientation subsystem is respectively connected to a control system (ACU) to provide the ACU with real-time position and pointing information of the antenna, and connected to the channel subsystem and the baseband subsystem to provide time and frequency reference signals for the ACU; connecting the ACU equipment for disassembling the antenna subsystem with the equipment of the channel subsystem and the baseband subsystem, and monitoring and controlling the state and parameters of the equipment in real time; the high-speed modem of the baseband subsystem is connected with the core network through a ground network.
The antenna subsystem completes low-orbit satellite tracking and Ka frequency band signal receiving and transmitting and comprises a detachable antenna surface, an antenna seat frame structure, a Ka wave band feed source, a leveling support, a driving and servo control system and the like. The Ka-band feed source consists of a Ka-band feed source network with the caliber of 1.8 meters and a feed source supporting device, and has excellent performances of high efficiency, low side lobe and the like; the antenna surface is carbon fiber composite, comprises 8 detachable sections, can accomodate into standard aluminium leather trunk after the dismantlement. The antenna feed source has Ka frequency band simultaneous receiving and transmitting, and left-handed and right-handed circular polarization switching; the Ka transmitting frequency band is 27.5 GHz-30.0 GHz, and the Ka receiving frequency band is 17.7 GHz-20.2 GHz; the adjustable flat support adopts an X-Y axis mode. The driving system and the control system realize the accurate pointing of the coming day by driving and controlling the adjustable flat support, and a tracking task is automatically generated by inputting two lines of data (the prior art) so as to meet the requirement of tracking the low-orbit satellite.
The channel subsystem comprises a Ka BUC and a Ka LNB, wherein the Ka BUC completes the functions of frequency conversion, amplification and filtering of an intermediate frequency signal output by the high-speed modem to a Ka frequency band, and then transmits the signal to a Ka wave band feed source of the antenna, and the Ka LNB transmits the intermediate frequency band signal received by the Ka wave band feed source of the antenna to the high-speed modem after low-noise amplification, frequency conversion and filtering;
the time-frequency and positioning and orientation subsystem receives the Beidou/GPS signals through a positioning and orientation receiver, detects the position information of the antenna in real time through a positioning antenna arranged at the edge of the antenna and feeds the position information back to a control system (ACU) through a loop to correct the attitude of the antenna, so as to meet the requirement of low-orbit satellite tracking accuracy. The time-frequency and positioning and orientation subsystem also needs to receive the time service information of the Beidou/GPS system to provide accurate and standard synchronous clock signals and frequency standard signals for the system to work.
The baseband subsystem comprises a linear amplifier and a high-speed modem. The high-speed modem completes network receiving of Ka-band uplink feed data, code modulation and intermediate frequency output to the Ka BUC, and the Ka-band downlink intermediate frequency feed data completes intermediate frequency demodulation and decoding, network sending and the like through the high-speed modem. The linear amplifier is integrated in the RF port of the high-speed modem to amplify the signal.
The working process of the portable detachable low-orbit satellite gateway station system is shown in figure 2:
1. and (3) structural assembly: antenna structure assembles and needs 2 people to go on, and structural support is for deployable fixed, in order to enable the antenna to can catch fast and can normally track the transit satellite, and the antenna possesses automatic north seeking and puts and fix according to the predetermined direction.
2. Cable linking: the cable connection is performed according to the connection relation of fig. 1, and the cable connection is ensured to be correct.
3. Positioning, orienting and leveling an antenna: the method is characterized in that the ACU is connected to the outside of the notebook computer for control, a positioning antenna on an antenna automatically transmits data to the ACU, the antenna is manually leveled according to the positioning data, a level meter can be used for leveling, and the leveling error is controlled within the precision range required by antenna installation.
4. Inputting two lines of data, and establishing a satellite following task: the antenna points to a preset position and tracks when the satellite passes by.
5. And (3) tracking the satellite when the satellite passes the border: the system automatically executes program tracking, feed data receiving and transmitting, modulation and demodulation and the like when waiting for the low earth orbit satellite to pass, and realizes services of terminal user mobile communication, broadband communication, Internet of things communication, navigation enhancement and the like.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A portable detachable low earth orbit satellite gateway station system is characterized in that the system comprises a detachable antenna subsystem (100), a channel subsystem (200), a time-frequency and positioning orientation subsystem (300) and a baseband subsystem (400);
the detachable antenna subsystem comprises a detachable antenna face (101), a structural seat frame (102), a Ka waveband feed source (103), a leveling bracket (104), a driving system (105) and a control system (106), wherein the bottom of the detachable antenna face (101) is detachably connected with the leveling bracket (104), the leveling bracket (104) is detachably connected with the structural seat frame (102), the Ka waveband feed source (103) and the leveling bracket (104) are respectively positioned at two sides of the detachable antenna face (101), the Ka waveband feed source (103) is detachably arranged at the middle position of the detachable antenna face (101), and the control system (106) controls the leveling bracket (104) to rotate on the horizontal plane and the vertical plane through the driving system (105);
the channel subsystem (200) comprises a Ka BUC (201) and a Ka LNB (202);
the baseband subsystem (400) comprises a modem (401), and the modem (401) is connected with the Ka band feed source (103) through the Ka BUC (201) and the Ka LNB (202) respectively;
time frequency and location orientation divide system (300) including location antenna (301), time frequency and location receiver (302) and GPS/big dipper signal reception antenna (303), time frequency and location receiver (302) respectively with location antenna (301) and GPS/big dipper signal reception antenna are connected (303), location antenna (301) detachably install can dismantle on antenna surface (101).
2. A portable detachable low earth satellite gateway system according to claim 1, wherein the detachable antenna face (101) is shaped as a paraboloid and the Ka band feed (103) is located in the concave center of the paraboloid detachable antenna face (101).
3. A portable detachable low earth orbit satellite gateway station system according to claim 2, characterized in that the detachable antenna face (101) consists of 8 detachable segments.
4. A portable detachable low earth satellite gateway system according to any of claims 1-3, characterized in that said detachable antenna face (101) has a diameter not less than 1.8 m.
5. A portable detachable low earth orbit satellite gateway station system according to claim 1, characterized in that the baseband subsystem (400) further comprises an output linear amplifier (402) and an access linear amplifier (403), the output of the modem (401) is connected to the Ka BUC (201) and the core network (500) through the output linear amplifier (402), respectively, and the input of the modem (401) is connected to the Ka LNB (202) and the access network/core network (500) through the access linear amplifier (403), respectively.
6. A portable detachable low earth orbit satellite gateway system according to claim 1, characterized in that the positioning antenna (301) is detachably mounted at the edge of the detachable antenna face (101).
7. A portable, demountable, low earth orbit satellite gateway system of claim 1 wherein said structural mounting (102) is a deployable and fixed support cradle.
8. A portable detachable low earth orbit satellite gateway station system according to claim 1, characterized in that the levelable support (104) and the driving system (105) together constitute an X-Y axis antenna mount.
9. The portable detachable low-orbit satellite gateway system as claimed in claim 1, wherein the transmitting frequency band of the Ka band feed source (103) is 27.5 GHz-30.0 GHz, and the receiving frequency band of the Ka band feed source (103) is 17.7 GHz-20.2 GHz.
10. A portable detachable low earth orbit satellite gateway station system according to claim 5, characterized in that the time-frequency and positioning receiver (302) is further connected with the control system (106), the access linear amplifier (403), the Ka LNB (202) and the Ka BUC (201), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122393775.8U CN215956384U (en) | 2021-09-30 | 2021-09-30 | Portable detachable low-orbit satellite gateway station system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393775.8U CN215956384U (en) | 2021-09-30 | 2021-09-30 | Portable detachable low-orbit satellite gateway station system |
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| Publication Number | Publication Date |
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| CN215956384U true CN215956384U (en) | 2022-03-04 |
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| CN202122393775.8U Active CN215956384U (en) | 2021-09-30 | 2021-09-30 | Portable detachable low-orbit satellite gateway station system |
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