CN105430060B - Constraint publish-subscribe model space flight measurement and control data exchange system - Google Patents
Constraint publish-subscribe model space flight measurement and control data exchange system Download PDFInfo
- Publication number
- CN105430060B CN105430060B CN201510739214.5A CN201510739214A CN105430060B CN 105430060 B CN105430060 B CN 105430060B CN 201510739214 A CN201510739214 A CN 201510739214A CN 105430060 B CN105430060 B CN 105430060B
- Authority
- CN
- China
- Prior art keywords
- data
- control data
- measuring
- observing
- data exchange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 23
- 238000009432 framing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 16
- 238000012423 maintenance Methods 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 claims description 11
- 230000000750 progressive effect Effects 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010845 search algorithm Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013497 data interchange Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Information Transfer Between Computers (AREA)
Abstract
The present invention relates to a kind of space flight measurement and control data exchange systems based on constraint publish-subscribe model, it is characterized in that it includes three observing and controlling application program, data exchange software and transmission network parts, observing and controlling application program is application layer measuring and control data processing routine, spacecraft exterior measuring, the calculating of telemetry and telecommand type measuring and control data and processing function are used to implement, is deployed in measurement and control unit server, work station or industrial personal computer and runs；Data exchange software deployment realizes framing, transmitting-receiving, subscription and the filtration treatment function of measuring and control data between observing and controlling application program and transmission network；Transmission network is TT＆C system data transmission IP network, completes the network transmission function of measuring and control data.The present invention can overcome the problems, such as that tied mechanism is short of in the prior art, it is insufficient to subscribe to data flexibility.
Description
Technical field
The present invention relates to space flight measurement and control Data Interchange Technology fields, particularly relate to a kind of based on constraint distribution subscription mould
The space flight measurement and control data exchange system of formula, it can be ensured that a large amount of, multi-source space flight measurement and control data are in spaceflight TT＆C system distribution
It realizes between measurement and control unit and on demand, in real time, efficiently transmits.
Background technology
Spaceflight TT＆C system is mainly by observing and controlling such as measurement and control center's subsystem, measurement and control unit subsystem and measuring and controlling equipment subsystems
Unit forms, and is built based on multi-level topology, presents using measurement and control center as core, connect multiple measurement and control units and affiliated observing and controlling
The tree-shaped framework form that equipment is formed.Measurement and control unit completes measuring and control data processing and function of exchange, passes through observing and controlling between each other
Data exchange system carries out data exchange, has the characteristics that data type is more, requirement of real-time is high, commutative relation is complicated.
Existing distribution subscription technology is based on theme subscription and realizes that data are transmitted on demand, not the source to exchange data, mesh
Mark and generated time are constrained, and application program can only voluntarily complete data secondary filter, and this mode increases application program
Complexity, to system processing whole efficiency also have an impact, therefore be not suitable for directly applying to space flight measurement and control data exchange
In scene.Moreover, general distribution subscription technology usually carries out curing setting to theme, be beyond expression space flight measurement and control data type
Between level and membership, it is impossible to realize that space flight measurement and control data obscure subscription, it is difficult to meet space flight measurement and control data and flexibly order
The requirement read.
Invention content
The technical problems to be solved by the invention are to provide a kind of issue based on constraint for the above-mentioned prior art to order
The space flight measurement and control data exchange system of pattern is read, tied mechanism shortcoming, the flexibility of subscription data in the prior art can be overcome not
The problem of sufficient.
Technical solution is used by the present invention solves the above problems：A kind of boat based on constraint publish-subscribe model
Its measuring and control data exchange system, it includes three observing and controlling application program, data exchange software and transmission network parts, observing and controlling application
Program is application layer measuring and control data processing routine, is used to implement the calculating of spacecraft exterior measuring, telemetry and telecommand type measuring and control data
With processing function, it is deployed in measurement and control unit server, work station or industrial personal computer and runs；Data exchange software deployment should in observing and controlling
With framing, transmitting-receiving, subscription and the filtration treatment function between program and transmission network, realizing measuring and control data；Transmission network is surveys
System data transmission IP network is controlled, completes the network transmission function of measuring and control data；
Observing and controlling application program submits number according to message subject, information source, the stay of two nights and the information content of agreement form write-in data
According to switch software, data exchange software completes data framing according to agreement form, and write time stamp information is breathed out according to message subject
The uncommon generation target that calculates sends address, is then sent to transmission network；The information of data is subscribed to needed for the configuration of observing and controlling application program
Theme, information source, the stay of two nights and information time submit data exchange software；Data exchange software receives measuring and control data from transmission network,
Measuring and control data is filtered according to the constraints that observing and controlling application program is configured, the measuring and control data for meeting constraints is pushed
Give observing and controlling application program.
Preferably, the data exchange software receives module, data by data framing module, data network hair module, data network
Filter engine, multistage theme subscribe to processing module and six, subscription information library part is formed, for completing to be distributed in transmission network
Observing and controlling application program between measuring and control data transmission and distribution.
Preferably, the multistage theme subscribes to processing module and provides a kind of theme expression for supporting fuzzy matching, packet
It includes：Progressive subject description method and fuzzy method for subscribing are classified, the progressive subject description method of classification is i.e. with observing and controlling number
According to first-level class as the first field of message subject, using measuring and control data secondary classification as the second field of message subject, class according to this
It pushes away, until navigating to specific measuring and control data type；When the fuzzy method for subscribing refers to observing and controlling application subscription data, only
The either field of message subject or multiple fields need to be submitted, you can subscribe to and submit whole measuring and control data classes that field matches
Type.
Preferably, the data filtering engine provides a kind of Data filtration strategy based on caching technology and corresponding caching
Maintenance algorithm, the principle of locality received and dispatched using measuring and control data, the filtering matching speed of acceleration measuring and control data frame.
Preferably, after data filtering engine obtains measuring and control data frame in the Data filtration strategy, query subscription is believed first
Cache pool is ceased, judges whether the subscription information of such measuring and control data is stored in caching, is such as not present, then further query subscription
Information bank.
Preferably, the caching technology is cached based on LRU policy management service, is ordered using query rate in some cycles is high
The subscription information for readding information bank replaces the subscription information of the low subscription information cache pool of query rate, by timed maintenance, improves
The cache hit rate of subscription information cache pool achievees the purpose that improve data filtering matching speed.
Compared with prior art, the advantage of the invention is that：
（1）The present invention supports to be classified progressive subscription subject description, can realize fuzzy subscription, disclosure satisfy that measurement and control unit number
According to the requirement of flexible subscription.
（2）The present invention provides the Data filtration strategy of a variety of constraints, realizes the accurate push of measuring and control data, reduces
The secondary filter consumption of upper layer application improves the efficiency of internal system measuring and control data exchange.
（3）The present invention provides a kind of Data filtration strategy based on caching technology and corresponding cache maintenance algorithm, utilizes
The principle of locality of measuring and control data transmitting-receiving accelerates the filtering matching speed of network data frame.
（4）The present invention realizes Full-Distributed System architectural schemes, and data exchange is carried out independent of third-party server
Relaying, it is ensured that the real-time and the reliability of system entirety that internal system measuring and control data exchanges.
Description of the drawings
Fig. 1 is the block diagram of system of this system；
Fig. 2 forms hierachical decomposition figure for this system；
Fig. 3 receives and dispatches flow chart for this system measuring and control data；
Fig. 4 is is classified progressive subject description method and fuzzy subscription schematic diagram；
Fig. 5 is the Data filtration strategy schematic diagram based on caching technology.
Wherein：
Observing and controlling application program 1, data exchange software 2, transmission network 3, data framing module 21, data network hair module 22,
Data network receives module 23, data filtering engine 24, multistage theme and subscribes to processing module 25, subscription information library 26.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
Embodiment 1, as shown in Figure 1, the embodiment of the present application provides a kind of space flight based on constraint publish-subscribe model
Measuring and control data exchange system mainly includes 3 three observing and controlling application program 1, data exchange software 2 and transmission network parts, observing and controlling
Application program 1 is application layer measuring and control data processing routine, is used to implement the types measuring and control data such as spacecraft exterior measuring, telemetering, remote control
Calculating and processing function, be deployed in measurement and control unit server, work station or industrial personal computer and run.Data exchange software 2 is disposed
Between observing and controlling application program 1 and transmission network 3, the functions such as framing, transmitting-receiving, subscription, the filtration treatment of measuring and control data are realized.It passes
Defeated network 3 is TT＆C system data transmission IP network, completes the network transmission function of measuring and control data.
Four step collaboration works such as above three component is sent according to data, data transfer, data subscription, data receiver
Make.Wherein, data sending step refers to observing and controlling application program 1 according to the message subject of agreement form write-in data, information source, the stay of two nights
And the information content, submit data exchange software 2.Data transfer step refers to that data exchange software 2 completes number according to agreement form
According to framing, write time stamp information generates target according to message subject Hash calculation and sends address, then sent out to transmission network 3
It send.Data subscription step refers to that required message subject, information source, the stay of two nights, the information time for subscribing to data is configured in observing and controlling application program 1
Deng submission data exchange software 2.Data reception step refers to that data exchange software 2 receives measuring and control data, root from transmission network 3
The constraintss such as message subject, information source, the stay of two nights, the information time being configured according to observing and controlling application program 1 are filtered measuring and control data,
The measuring and control data for meeting constraints is pushed to observing and controlling application program 1.
As shown in Fig. 2, data exchange software 2 is the core component of system, module is sent out by data framing module 21, data network
22nd, data network receives module 23, data filtering engine 24, multistage theme and subscribes to processing module 25 and 26 6, subscription information library part
It forms, for completing the measuring and control data being distributed between the observing and controlling application program 1 of transmission network 3 transmission and distribution.Data framing
Module 21 is used to receive the net hair measuring and control data of observing and controlling application program 1, according to agreement form composition data frame, and write time
Stamp；Data network hair module 22 is used for according to measuring and control data frame information subject information, and generation destination address is calculated using hash algorithm,
Measuring and control data frame is sent to transmission network 3；Data network receives module 23 and is used to receive measuring and control data frame from transmission network 3；Data
Filter engine 24 is used to obtain subscription information from subscription information library 26, and information master is filtered item by item based on linear list sequential search algorithm
The measuring and control data frame for meeting constraints is pushed to observing and controlling application program by the constraintss such as topic, information source, the stay of two nights, information time
1, the measuring and control data frame for being unsatisfactory for constraints is abandoned；Multistage theme subscribes to processing module 25 should for receiving and handling observing and controlling
The subscription data submitted with program 1, particularly, after carrying out specialization processing to the fuzzy subscription data that observing and controlling application program 1 is submitted,
The subscription information deposit subscription information library 26 of generation will be handled；Processing module is subscribed to for storing multistage theme in subscription information library 26
The subscription information of 25 processing generations.
Fig. 3 show this system and completes data receiver and the data transmission basic procedure that measuring and control data exchanges.On the one hand, it surveys
Control application program 1 submits accurate subscription data or fuzzy subscription data to data exchange software 2, and data exchange software 2 is to fuzzy
The processing of data specialization is subscribed to, generate subscription information and is stored, data exchange software receives measuring and control data frame from transmission network 3, presses
The constraintss such as the message subject of measuring and control data frame, information source, the stay of two nights, information time are filtered item by item according to subscription information, it will
The measuring and control data frame for meeting constraints pushes to observing and controlling application program 1.On the other hand, observing and controlling application program 1 will need to send
Measuring and control data frame submit data exchange software 2, data exchange software 2 carries out framing processing and write time according to agreement form
Information is stabbed, destination address is then generated according to message subject Hash calculation, measuring and control data frame is finally sent to transmission network 3.
Multistage theme subscribes to processing module 25 and provides a kind of theme expression for supporting fuzzy matching, that is, is classified progressive
Subject description and fuzzy method for subscribing, including：It is classified progressive subject description method, fuzzy method for subscribing.As shown in figure 4, point
Message subject is divided into multiple fields by the progressive subject description method of grade, represents the different levels of measuring and control data type respectively,
Such as the first field can be referred to telemetry, unit discharging；Second field can divide into satellite telemetering data, airship telemetering number
According to, S-band unit discharging, C-band unit discharging etc.；Third field can be further discriminated between as satellite telemetry true form data, satellite
Telemetering chooses point data, S-band exterior measuring angle measurement data, S-band exterior measuring ranging data etc., outside C-band exterior measuring angle measurement data, C-band
Survey ranging data etc., and so on.It is classified the fuzzy method for subscribing that progressive subject description method supports measuring and control data, subscriber
Can be by the way that whole fields of message subject be submitted to realize that measuring and control data is accurately subscribed to, it can also be by submitting appointing for message subject
Meaning field realizes that measuring and control data obscures subscription, and this method realization submits the specialization of field to handle, is accurately located to whole correlations
Measuring and control data type, so as to fulfill the flexible subscription of measuring and control data.
Embodiment 2
The embodiment of the present application provides a kind of Data filtration strategy based on caching technology, the part received and dispatched using measuring and control data
Property principle（I.e. feature is concentrated in the timesharing of measuring and control data type）, the filtering matching speed of acceleration measuring and control data frame.The data filtering
Mechanism is compared to linear list sequential search algorithm described in embodiment 1, can obtain in the case that subscription information library 26 is larger
Obtain higher search performance.After data filtering engine 24 obtains measuring and control data frame, as shown in figure 5, querying information of subscription delays first
Pond is deposited, judges whether the subscription information of such measuring and control data is stored in caching（Judge whether caching hits）, such as miss,
Then further querying information of subscription library.Caching management module and subscription information cache pool are the submodules of data filtering engine 24,
Caching management module is based on LRU policy（Least Recently Used, LRU）Management service caches, using being looked into some cycles
The subscription information in the high subscription information library 26 of inquiry rate replaces the subscription information of the low subscription information cache pool of query rate.Pass through caching
The timed maintenance of management module improves the cache hit rate of subscription information cache pool, reaches and improves data filtering engine 24
Filter the purpose of matching speed.
The cache maintenance algorithm description of caching management module is as follows：The definition cache maintenance period is T, in the cache maintenance period
The cache hit number of subscription information cache pool is C1, the inquiry times in subscription information library 26 are C2, then looked into the cache maintenance period
Inquiry total degree is C=C1+C2.It is S to define query hit number of i-th subscription information in T in subscription information cache pooli, then
Hit rate of this subscription information in T is Ai=Si/C；Define inquiry of the j-th strip subscription information in T in subscription information library 26
Hit-count is Sj, then hit rate of this subscription information in T is Aj=Sj/C。
Definition current time is t, and the last cache maintenance time is t0, the caching scale of subscription information cache pool is M, is ordered
The subscription information scale of information bank 26 is read as N, then cache maintenance algorithm can using formalized description as：
BEGIN
While（t-t0>T）{ // by the period of T performs cache maintenance
While（i<N）{ // one by one judges subscription information cache pool
While（j<M）{ // one by one judges subscription information library 26
IF[Ai<Aj]{
I-th subscription information of // subscription information cache pool is exchanged to subscription information library 26
The j-th strip subscription information in // subscription information library 26 is exchanged to subscription information cache pool
}
}
}
}
END
In addition to the implementation, it is all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiment
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (6)
1. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model, it is characterised in that it includes observing and controlling
Three application program, data exchange software and transmission network parts, observing and controlling application program are application layer measuring and control data processing routine,
Spacecraft exterior measuring, the calculating of telemetry and telecommand type measuring and control data and processing function are used to implement, is deployed in measurement and control unit service
It is run in device, work station or industrial personal computer；Data exchange software deployment realizes observing and controlling between observing and controlling application program and transmission network
Framing, transmitting-receiving, subscription and the filtration treatment function of data；Transmission network is TT＆C system data transmission IP network, completes observing and controlling
The network transmission function of data；
Observing and controlling application program submits data to hand over according to message subject, information source, the stay of two nights and the information content of agreement form write-in data
Software is changed, data exchange software completes data framing, write time stamp information, according to message subject Hash meter according to agreement form
It calculates generation target and sends address, then sent to transmission network；The required message subject for subscribing to data of observing and controlling application program configuration,
Information source, the stay of two nights and information time submit data exchange software；Data exchange software receives measuring and control data from transmission network, according to
The constraints of observing and controlling application program configuration is filtered measuring and control data, and the measuring and control data for meeting constraints is pushed to survey
Control application program.
2. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model according to claim 1,
It is characterized in that：Data exchange software by data framing module, data network hair module, data network receive module, data filtering engine,
Multistage theme subscribes to processing module and six, subscription information library part is formed, for completing to be distributed in the observing and controlling application of transmission network
Measuring and control data transmission and distribution between program.
3. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model according to claim 2,
It is characterized in that：The multistage theme subscribes to processing module and provides a kind of theme expression for supporting fuzzy matching, including：Point
The progressive subject description method of grade and fuzzy method for subscribing, the progressive subject description method of classification is i.e. with measuring and control data level-one
Classification is as the first field of message subject, using measuring and control data secondary classification as the second field of message subject, and so on, until
Navigate to specific measuring and control data type；When the fuzzy method for subscribing refers to observing and controlling application subscription data, it is only necessary to submit
The either field of message subject or multiple fields, you can subscribe to and submit whole measuring and control data types that field matches.
4. a kind of space flight measurement and control data exchange system based on constraint publish-subscribe model according to Claims 2 or 3
System, it is characterised in that：The data filtering engine provides a kind of Data filtration strategy based on caching technology and corresponding caching
Maintenance algorithm, the principle of locality received and dispatched using measuring and control data, the filtering matching speed of acceleration measuring and control data frame.
5. the space flight measurement and control data exchange system according to claim 4 based on constraint publish-subscribe model, special
Sign is：After data filtering engine obtains measuring and control data frame in the Data filtration strategy, querying information of subscription cache pool first,
Judge whether the subscription information in the measuring and control data frame obtained is stored in caching, be such as not present, then further query subscription letter
Cease library.
6. the space flight measurement and control data exchange system according to claim 4 based on constraint publish-subscribe model, special
Sign is：The caching technology is cached based on LRU policy management service, uses the high subscription information library of query rate in some cycles
Subscription information replace the subscription information of the low subscription information cache pool of query rate, by timed maintenance, improve subscription information
The cache hit rate of cache pool achievees the purpose that improve data filtering matching speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739214.5A CN105430060B (en) | 2015-11-04 | 2015-11-04 | Constraint publish-subscribe model space flight measurement and control data exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739214.5A CN105430060B (en) | 2015-11-04 | 2015-11-04 | Constraint publish-subscribe model space flight measurement and control data exchange system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105430060A CN105430060A (en) | 2016-03-23 |
| CN105430060B true CN105430060B (en) | 2018-06-19 |
Family
ID=55507996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510739214.5A Expired - Fee Related CN105430060B (en) | 2015-11-04 | 2015-11-04 | Constraint publish-subscribe model space flight measurement and control data exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105430060B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107067325A (en) * | 2017-04-18 | 2017-08-18 | 湖南福米信息科技有限责任公司 | Filter method, filter and the supplying system of stock market data |
| CN108155953A (en) * | 2017-11-29 | 2018-06-12 | 北京空间技术研制试验中心 | A kind of spacecraft-testing system |
| CN109921919A (en) * | 2017-12-13 | 2019-06-21 | 航天信息股份有限公司 | Data exchange system and method |
| CN113449234B (en) * | 2021-05-11 | 2022-10-11 | 中国人民解放军63729部队 | Method for multi-stage subscription and release of data |
| CN114337789A (en) * | 2022-01-04 | 2022-04-12 | 上海航天测控通信研究所 | Satellite-borne Ka frequency band high-speed data transmission system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324520A (en) * | 2013-06-19 | 2013-09-25 | 西北工业大学 | Subscribing method based on conditional combination and sharing |
| CN104794200A (en) * | 2015-04-21 | 2015-07-22 | 中国人民解放军总参谋部第六十三研究所 | Event publishing and subscribing method supporting fuzzy matching based on ontology |
-
2015
- 2015-11-04 CN CN201510739214.5A patent/CN105430060B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324520A (en) * | 2013-06-19 | 2013-09-25 | 西北工业大学 | Subscribing method based on conditional combination and sharing |
| CN104794200A (en) * | 2015-04-21 | 2015-07-22 | 中国人民解放军总参谋部第六十三研究所 | Event publishing and subscribing method supporting fuzzy matching based on ontology |
Non-Patent Citations (1)
| Title |
|---|
| 基于收益机制发布/订阅***时间约束保障技术;马建刚等;《软件学报》;20080731;第19卷(第7期);第1590-1601页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105430060A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105430060B (en) | Constraint publish-subscribe model space flight measurement and control data exchange system | |
| CN106056211B (en) | Neuron computing unit, neuron computing module and artificial neural networks core | |
| Xu et al. | Asynchronous federated learning on heterogeneous devices: A survey | |
| CN106651247A (en) | Address area block matching method based on GIS topology analysis and address area block matching system thereof | |
| CN113811915A (en) | Unified order serving and fleet management for online shared travel platform | |
| CN106772685B (en) | Similar typhoon matching algorithm and software support system based on Web-GIS | |
| CN107038886B (en) | A kind of taxi based on track data is cruised path recommended method and system | |
| CN107710237A (en) | Deep neural network divides on server | |
| CN107025289B (en) | A kind of method and relevant device of data processing | |
| CN101692229A (en) | Self-adaptive multilevel cache system for three-dimensional spatial data based on data content | |
| CN111209294B (en) | Distributed coverage search method for multiple unmanned aerial vehicles based on region allocation | |
| CN108171998A (en) | A kind of crossing self-adapting traffic signal control system and its method of work based on the alert data of electricity | |
| CN104809601A (en) | Express delivery mutual aid system based on electronic map | |
| CN104951306B (en) | Data processing method and system based on real-time Computational frame | |
| CN106446026A (en) | File management method and file management system | |
| CN110188872A (en) | A kind of isomery cooperative system and its communication means | |
| CN109448363A (en) | Suspected vehicles based on trajectory predictions intelligently sealed method, system and processing terminal | |
| CN110163634A (en) | Withdrawing method and device, electronic equipment based on block chain | |
| CN113518007A (en) | Multi-internet-of-things equipment heterogeneous model efficient mutual learning method based on federal learning | |
| CN115357041A (en) | Unmanned aerial vehicle group monitoring method and system based on 5G mobile networking and electronic equipment | |
| CN106104527A (en) | Streaming query resource controls | |
| CN107426315A (en) | A kind of improved method of the distributed cache system Memcached based on BP neural network | |
| CN108984723A (en) | Creation index, data query method, apparatus and computer equipment | |
| Guo et al. | Max-flow rate priority algorithm for evacuation route planning | |
| Guo et al. | Analyzing the Aging Population and Density Estimation of Nanjing by Using a Novel Grey Self-Memory Prediction Model Under Fractional-Order Accumulation. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 |