CN110380764A - Multi-beam subarea-scanning promotes full airspace telemetry communication with the method for meeting access performance - Google Patents
Multi-beam subarea-scanning promotes full airspace telemetry communication with the method for meeting access performance Download PDFInfo
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- CN110380764A CN110380764A CN201910685490.6A CN201910685490A CN110380764A CN 110380764 A CN110380764 A CN 110380764A CN 201910685490 A CN201910685490 A CN 201910685490A CN 110380764 A CN110380764 A CN 110380764A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
-
- 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
- H04B7/18513—Transmission in a satellite or space-based system
Abstract
A kind of multi-beam subarea-scanning disclosed by the invention promotes full airspace telemetry communication with the method for meeting access performance, be intended to provide it is a kind of use multi-beam subarea-scanning, complete can increase airspace Multi target TT&C communication system throughput, reduce satellite borne equipment complexity, improve access real-time with meet cut-in method.It is achieved by following technical proposals: as the full airspace Multi target TT&C communication system of access node, using preceding to multi-beam scanning+back panorama fixed beam access module；Access node is by activating N number of array element to form scan forward wave beam, for carrying broadcast message, access response message, paging message, identity authentication message etc., realize that the full airspace of control channel covers in such a way that multiple scan forward wave beams are fixed resident or elasticity is resident；Access node forms back panorama fixed beam by M array element of activation, for carrying access solicitation message, page-response message, business solicitation message etc., realizes that full airspace covers control channel simultaneously using multiple back panorama fixed beams.
Description
Technical field
The present invention relates to one kind to be applied to empty day information system, is suitable for full airspace Multi target TT&C communication equipment, can increase
Adding system handling capacity, reduce satellite borne equipment complexity, improve access real-time with meet access module.
Background technique
With the fast development of space technology, a cube magnitude grapefruit satellite is rapidly developed and disposes, and with business, scouts
Etc. middle-size and small-size Space Vehicle System based on purposes mostly use the system architecture of constellation deployment formula, spatial manipulation management object sharply increases
It is more.The leading plan access module in traditional ground will face immense pressure, expose that working efficiency is low, real-time is not strong, failure
It was found that and emergency rescue not in time etc. the problem of, seriously affect the operational efficiency of network.Under the application scenarios, it need to build
A kind of flexible access mode for adapting to big Space Age is found, telemetry communication network operational efficiency is promoted.
In addition, the technology with novel intelligent user platform develops, satellite platform will be to the direction of in-orbit autonomous management
Develop (such as 0.3m resolution Optical imaging satellite), expedites the emergence of out world cotasking drive mode.In this mode, autonomous on star
Judge whether satellite transit is normal, satellite actively initiates passback after there is exception, provides what platform was run to customer center in real time
Comprehensive situation information, to reduce the workload of ground artificial judgement and management；In addition to health control autonomous on star, satellite also can root
Situation is carried according to data volumes such as scouting, remote sensing, business service application is actively initiated, data is unloaded in time and are back in user
The heart；User can also realize multiple user's mesh in addition to directly proposing that data transmit request for utilization for own data transmission mission requirements
Synergistic application is marked, i.e., proposes the use demand of other users target cooperative work by some ownership goal, passes through telemetry communication
System sends task scheduling to corresponding collaborative work ownership goal, and number is called to pass the transmission that resource supports its business datum.But
World cotasking drive mode is not supported in the access of tradition plan at present.
Use for reference land mobile communication thought, U.S.'s NASA space communication and navigation (Space Communications and
Navigations, SCaN) it has formulated 2025 and later next-generation near-earth Communications And Navigation framework, it provides public away from earth 2M
In within Communications And Navigation service, i.e. space mobile network (Space Mobile Network, SMN).SMN is moved using ground
Dynamic wireless network technologies, by spacecraft communication from communication means that is static, preplaning to dynamic, task-driven, service-oriented
Network-based communication means transformation, realize the network user possess the service similar to earth mobile wireless smart phone user
Experience.It is a kind of novel dispatch service that the user being directed to, which initiates service (UIS), and task spacecraft is allowed directly to pass through one
Kind automation resource allocation system initiates asset allocation request；Spacecraft can not only request service time window, can also ask
Customization bandwidth is sought, to improve the efficiency of network and system；Spacecraft carries out UIS by signalling path and data channel and has shaken hands
At service acquisition.
China had also actively developed TT & C Telecommunication with chance access technology research in recent years.Terrestrial cellular is used for reference to move
Dynamic communication thought additionally establishes a kind of low bit- rate, simultaneously full airspace between satellite and access node on the basis of Traffic Channel
The dedicated control channel of covering realizes that spacecraft is in network presence always.By dedicated control channel, accesses both sides and obtain
Required various information (access application information, basic status information etc.) is taken, autonomous configuration completes access, drives to reduce plan
Dynamic, the real-time for improving observing and controlling number biography task provides a strong guarantee.Wherein full airspace Multi target TT&C communication equipment is as ground
Unique form of access node, with meeting, access module design is particularly important, directly affects the operational efficiency of telemetry communication network
And service efficiency.Therefore, the present invention is based on existing preceding back panorama fixed beam access modules, design a kind of using multi-beam
Subarea-scanning promotes full airspace telemetry communication with the method for meeting access performance, realizes that spacecraft high efficiency accesses empty day information system
System.
Summary of the invention
The purpose of the present invention is quickly ring for big Space Age flexible access, the driving of world cotasking, emergency event
Demands should be waited, existing preceding back panorama fixed beam access module is based on, a kind of use multi-beam subarea-scanning is provided, can be increased
Add full airspace Multi target TT&C communication system throughput, reduces satellite borne equipment complexity, improves accessing with chance for access real-time
Method.
Above-mentioned purpose of the invention can be reached by the following measures, and a kind of full airspace of multi-beam subarea-scanning promotion is surveyed
Control communication is with the method for meeting access performance, with following technical characteristic: full the airspace Multi target TT&C as access node communicates
System is respectively formed the panorama fixed beam or high gain, wave beam that gain is low, covering is wide using digital beam froming principle
The scanning beam of narrower width；Access node to multi-beam scanning+back panorama fixed beam access module, that is, is accessed using preceding
Node is by activating N number of array element to form scan forward wave beam, and each scanning beam scans respective region according to scan pattern, altogether benefit
Full airspace covering is realized with multiple scan forward wave beam subarea-scannings, while access node forms back by M array element of activation
Panorama wave beam, each panorama fixed beam can cover certain airspace, be realized using multiple back panorama fixed beams complete simultaneously empty
Domain covering；
The multiple forward direction wave beams of access node realize subarea-scanning broadcast simultaneously first, after then satellite receives broadcast message,
Persistent district is selected based on link access strategy, initiates the access application comprising contents such as satellite ID, access application grades；Immediately
, access node is based on back panorama wave beam and carries out multiple access detection, receives the access solicitation message that satellite is initiated, and lead to
It crosses scan forward wave beam and sends access response；It is complete by scan forward wave beam and back panorama wave beam between satellite and access node
At two-way authentication；After certification, access node distributes dedicated control channel, is sent to satellite by scan forward wave beam, complete
It is accessed at link；After link connection is established, access node is based on back panorama wave beam and receives satellite basic status information, completes to defend
Star basic status management；Customer center initiate the service access stage, access node be based on business service strategy, by it is preceding to
Scanning beam initiates paging application, receives the business response message etc. that satellite is initiated by back panorama wave beam；In satellite Autonomous
In the service access stage of initiation, access node receives the business solicitation message that satellite is initiated by back panorama wave beam, by preceding
To scanning beam distribution traffic channel resource etc., finishing service access.
The present invention has the advantages that compared to existing preceding back panorama fixed beam access module
Increase throughput of system.The present invention is using preceding to multi-beam scanning+back panorama fixed beam access module, forward direction
The beam angle of scanning beam is narrower compared to panorama wave beam, effectively promotes EIRP value, under identical constraint condition (G/T value on star,
Operating distance, transmission system etc.), scan forward wave beam can transmit higher information rate.Therefore, the forward direction that the present invention uses is more
Beam scanning+back panorama fixed beam access module increases throughput of system.
Reduce satellite borne equipment complexity.The present invention using preceding to multi-beam scanning+back panorama fixed beam access module,
Scan forward wave beam improves access node EIRP value to panorama wave beam compared to preceding, (the information transmission speed under specifying constraint
Rate, operating distance, transmission system etc.), scan forward wave beam can be promoted effectively and receive carrier-to-noise ratio on star, and signal demodulates surplus and increases
Add.Therefore, forward direction multi-beam scanning+back panorama fixed beam access module that the present invention uses reduces satellite borne equipment signal
Handle complexity.
Improve access real-time.The present invention is using preceding to multi-beam scanning+back panorama fixed beam access module, access
Node forward emitted effective omnidirectional radiation power EIRP synthesizes the sum of gain with array for array radiation power, if beam angle becomes
Narrow (by taking 1/2 beam angle as an example), 2 times before wave position number can be made about to become, but emit EIRP and about promote 6dB (array
Synthesize gain and increase 3dB, activation array number, which doubles, brings transmission power to increase 3dB), then rate will promote 4 times, that is, count
1/4 before being shorten to according to sending time.Although as can be seen that wave position number become before 2 times, data transmission time contracting
Short is 1/4, and in the case where not considering data transmission delay and processing delay, turn-on time about becomes 1/4*2=1/2.Therefore,
The forward direction multi-beam scanning that the present invention uses+back panorama fixed beam access module can effectively improve access real-time.
Detailed description of the invention
Fig. 1 is before access node to multi-beam scanning+back panorama fixed beam access module schematic diagram.
Fig. 2 is access node back panorama fixed beam schematic diagram in Fig. 1 (the thick warp of black indicates 5 degree of pitch angle).
Fig. 3 be in Fig. 1 before access node to multi-beam subarea-scanning wave position schematic diagram.
Fig. 4 be before access node under multi-beam scanning+back panorama fixed beam mode with meeting access process schematic diagram.
Invention will be further explained below with reference to the drawings and examples..
Specific embodiment
Refering to fig. 1.As the full airspace Multi target TT&C communication system of access node, using digital beam froming principle,
It is respectively formed the scanning beam that gain is low, covering wide panorama fixed beam or high gain, beam angle is relatively narrow；Access node
Using preceding to multi-beam scanning+back panorama fixed beam access module, i.e., access node by before activating N number of array element to be formed to
Scanning beam, each scanning beam scan respective region according to scan pattern, utilize multiple scan forward wave beam subarea-scannings altogether
Realize full airspace covering, while access node forms back panorama wave beam by M array element of activation, each panorama fixed beam can
Certain airspace is covered, realizes that full airspace covers simultaneously using multiple back panorama fixed beams.
Scan forward wave beam is swept for carrying broadcast message, access response message, paging message, identity authentication message etc.
The resident mode for retouching wave beam is divided into fixed resident and elasticity and is resident two kinds, and fixed resident mode is scan forward wave beam residence time
It is definite value, the resident mode of elasticity is scan forward wave beam according to access number of satellite dynamic adjustment residence time；Back panorama is solid
Standing wave beam is for carrying access solicitation message, page-response message, business solicitation message etc..
The multiple forward direction wave beams of access node first realize subarea-scanning broadcast simultaneously, in broadcast message comprising cell ID, when
Between, node location, service resources state etc.；Then it after satellite receives broadcast message, is resident based on the selection of link access strategy small
Area initiates the access application comprising contents such as satellite ID, access application grades；And then, access node is based on back panorama wave
The detection of Shu Jinhang multiple access receives the access solicitation message that satellite is initiated, and sends access by scan forward wave beam and ring
It answers；Two-way authentication is completed by scan forward wave beam and back panorama wave beam between satellite and access node；After certification, connect
Ingress distributes dedicated control channel, is sent to satellite by scan forward wave beam, completes link access.
After link connection is established, access node is based on back panorama wave beam and receives satellite basic status information, completes satellite
Basic status management；In the service access stage that customer center is initiated, access node is based on business service strategy, by preceding to sweeping
It retouches wave beam and initiates paging application, the business response message etc. that satellite is initiated is received by back panorama wave beam；It is sent out in satellite Autonomous
Rise the service access stage, access node by back panorama wave beam receive satellite initiate business solicitation message, by it is preceding to
Scanning beam distributes traffic channel resource etc., finishing service access.
Refering to Fig. 2.The present invention is configured as embodiment, access node with the full airspace Multi target TT&C system of equivalent bore 5m
Back panorama fixed beam totally 10, realize full airspace covering simultaneously.Specific features are as follows: one wave of access node zenith direction
Beam, by 20 activation array element covering orientations to 0~360 degree, 60 degree of area above of pitch angle (60 degree of the beam angle)；Low
At pitch angle, numbers of beams totally 9 are designed, each beam center is located at pitching to 32 degree, at orientation, the direction interval of adjacent beams
40 degree (each wave beam by 2 array elements of activation, formed orientation and pitching to beam angle be respectively 40 degree and 80 degree).Zenith
Direction wave beam meets within 30 degree of drift angle, the constraint of beam gain 7dB；Wave beam at low pitch angle, equally meets orientation
40 degree of beam angle, pitching are not less than 7dB design constraint to the antenna gain within the scope of 80 degree of beam angle.
Refering to Fig. 3.The present invention is configured as embodiment, scan forward with the full airspace Multi target TT&C system of equivalent bore 5m
The specific consideration of beam designing is as follows: beam angle :≤18.7 °；
1) wave beam residence time: 32ms；
Forward direction wave beam is resident by the way of " i.e. hair is to walk ", and the residence time of each wave position is that a Forward Signalling is sent
Time, can guarantee the complete transmission of a Forward Signalling in the residence time of wave position, the reception of back signaling can be by panorama wave beam
Real-time reception, not by the constraint of residence time.
2) wave beam number: 10；
3) present invention is according to the movement velocity and residence time of satellite, in pitching to designing reasonable overlay region with orientation
Domain guarantees effective covering of the wave beam to satellite.
In above-mentioned factor, entire full airspace range is divided into 10 regions as shown in Figure 3, and wherein region 1 includes 9
Wave position, 2~10 coverage area of region is equal, respectively contains 14 wave positions；In the adjacent wave position of each beam scanning, setting is appropriate
Overlapping, to guarantee effective covering to target within the scope of full airspace, wherein the size of overlapping region is resident equal to unicast position wave beam
Target movement bring pitch angle and azimuth maximum variable quantity in time；13 array elements inside selecting system submatrix form control
Wave beam processed, each region carry out scan round to each wave position with 1 wave beam respectively, i.e., access node using 10 control wave beams according to
The scan pattern execution cycle property scanning being pre-designed, realizes that full airspace effectively covers.
Refering to Fig. 4.Under forward direction multi-beam scanning+back panorama fixed beam access module, when timing starts, wave beam can
The case where misalignment target can occur, therefore there are a waiting time t before a piece of news transmissionperiod.Access node
3 message are interacted with satellite can be realized link access, wherein interaction for the first time include it is preceding to send broadcast message, back is sent
Access application information；Second of interaction sends user authentication information to transmission access response message, back including preceding；Third time is handed over
It mutually include preceding to transmission access node authentication information, back transmission access confirmation message.
For forward direction multi-beam scanning+back panorama fixed beam access module single goal with chance turn-on time Taccess
Meet following formula:
In formula, T is wave beam residence time, twaitFor the waiting time that broadcasts the message, tperiodFor revisiting period,For it is preceding to
Message sending time,The processing time is received to information to be preceding,For back message sending time,For back letter
Breath receives processing time, tdFor time of space transmission；N is scan period number, and NT is each cell scan period, and N is each cell
Numbers of beams.
Claims (9)
1. a kind of multi-beam subarea-scanning promotes full airspace telemetry communication with the method for meeting access performance, have following technology special
Sign: the full airspace Multi target TT&C communication system as access node is respectively formed gain using digital beam froming principle
The relatively narrow scanning beam of panorama fixed beam or high gain, beam angle low, that covering is wide；Access node uses preceding Xiang Duobo
Beam scanning+back panorama fixed beam access module, i.e. access node are by activating N number of array element to form scan forward wave beam, often
A scanning beam scans respective region according to scan pattern, realizes that full airspace is covered using multiple scan forward wave beam subarea-scannings altogether
Lid, while access node forms back panorama wave beam by M array element of activation, each panorama fixed beam covers certain airspace,
Realize that full airspace covers simultaneously using multiple back panorama fixed beams.
2. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
Be characterized in that: scan forward wave beam is returned for carrying broadcast message, access response message, paging message and identity authentication message
To panorama fixed beam for carrying access solicitation message, page-response message and business solicitation message.
3. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
Be characterized in that: the resident mode of scanning beam is divided into fixed resident and elasticity and is resident two kinds, fixed resident mode, that is, scan forward
Wave beam residence time is definite value, when the resident mode, that is, scan forward wave beam of elasticity adjusts resident according to access number of satellite dynamic
Between.
4. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
Be characterized in that: the multiple forward direction wave beams of access node realize subarea-scanning broadcast simultaneously, in broadcast message comprising cell ID, the time,
Node location and service resources state.
5. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
It is characterized in that: after satellite receives broadcast message, persistent district being selected based on link access strategy, access application is initiated, accesses Shen
Please in comprising satellite ID, access application rated content.
6. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
Be characterized in that: access node is based on back panorama wave beam and carries out multiple access detection, receives the access application that satellite is initiated and disappears
Breath, and access response is sent by scan forward wave beam.
7. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
It is characterized in that: two-way authentication being completed by scan forward wave beam and back panorama wave beam between satellite and access node, has been authenticated
Bi Hou, access node distribute dedicated control channel, are sent to satellite by scan forward wave beam, complete link access.
8. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
Be characterized in that: after link connection is established, access node is based on back panorama wave beam and receives satellite basic status information, completes satellite
Basic status management；In the service access stage that customer center is initiated, access node is based on business service strategy, by preceding to sweeping
It retouches wave beam and initiates paging application, the business response message that satellite is initiated is received by back panorama wave beam；It is initiated in satellite Autonomous
The service access stage, access node receives the business solicitation message that satellite is initiated by back panorama wave beam, by preceding to sweeping
Retouch beam allocation traffic channel resource, finishing service access.
9. multi-beam subarea-scanning as described in claim 1 promoted full airspace telemetry communication with meet access performance method,
It is characterized in that: for forward direction multi-beam scanning+back panorama fixed beam access module single goal with chance turn-on time Taccess
Meet following formula:And meet tperiod=nNT, in formula,
T is wave beam residence time, twaitFor the waiting time that broadcasts the message, tperiodFor revisiting period,To be preceding to message sending time,The processing time is received to information to be preceding,For back message sending time,When receiving processing for back information
Between, tdFor time of space transmission；N is scan period number, and NT is each cell scan period, and N is each cells beam number.
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| CN111884707A (en) * | 2020-07-27 | 2020-11-03 | 昆宇蓝程（北京）科技有限责任公司 | Satellite internet random access system |
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| CN113437518A (en) * | 2021-06-29 | 2021-09-24 | 中国西安卫星测控中心 | Scanning capture method based on paraboloid unified measurement and control antenna |
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| CN117118748A (en) * | 2023-10-20 | 2023-11-24 | 西安中科天塔科技股份有限公司 | Satellite-ground random access method and system |
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| CN113534119B (en) * | 2020-04-13 | 2024-04-30 | 丰田自动车株式会社 | Sensor and sensor system |
| CN111884707A (en) * | 2020-07-27 | 2020-11-03 | 昆宇蓝程（北京）科技有限责任公司 | Satellite internet random access system |
| CN114362802A (en) * | 2020-10-12 | 2022-04-15 | 大唐移动通信设备有限公司 | Signal transmission method, device, equipment and readable storage medium |
| CN112383346A (en) * | 2020-11-17 | 2021-02-19 | 北京空灵网科技术有限公司 | Method and device for realizing satellite broadcast channel |
| CN112383346B (en) * | 2020-11-17 | 2021-07-30 | 北京空灵网科技术有限公司 | Method and device for realizing satellite broadcast channel |
| CN112910541A (en) * | 2021-01-20 | 2021-06-04 | 华力智芯(成都)集成电路有限公司 | Satellite user side wave beam design method applied to satellite mobile communication system |
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| CN113437518A (en) * | 2021-06-29 | 2021-09-24 | 中国西安卫星测控中心 | Scanning capture method based on paraboloid unified measurement and control antenna |
| CN114050859B (en) * | 2021-10-30 | 2023-06-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Full airspace measurement and control system based on sensing access mode |
| CN114050859A (en) * | 2021-10-30 | 2022-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Full airspace measurement and control system based on perception access mode |
| CN114553291A (en) * | 2022-01-11 | 2022-05-27 | 中国电子科技集团公司第十研究所 | Method for improving random access performance of full airspace measurement and control communication by multi-beam partition scanning |
| CN114859852A (en) * | 2022-04-15 | 2022-08-05 | 中国电子科技集团公司第十研究所 | Control method for aircraft measurement and control access, electronic equipment and storage medium |
| CN114859852B (en) * | 2022-04-15 | 2023-09-05 | 中国电子科技集团公司第十研究所 | Control method, electronic equipment and storage medium for aircraft measurement and control access |
| CN116151039A (en) * | 2023-04-19 | 2023-05-23 | 中国西安卫星测控中心 | Distributed collaborative scheduling method and system based on random access task |
| CN116151039B (en) * | 2023-04-19 | 2023-08-01 | 中国西安卫星测控中心 | Distributed collaborative scheduling method and system based on random access task |
| CN117118748A (en) * | 2023-10-20 | 2023-11-24 | 西安中科天塔科技股份有限公司 | Satellite-ground random access method and system |
| CN117118748B (en) * | 2023-10-20 | 2023-12-29 | 西安中科天塔科技股份有限公司 | Satellite-ground random access method and system |
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