CN104537894A - Distributed low-altitude flight service system and working method thereof - Google Patents
Distributed low-altitude flight service system and working method thereof Download PDFInfo
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- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
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Abstract
The invention relates to the technical field of space flight and aviation and particularly discloses a distributed low-altitude flight service system and a working method of the distributed low-altitude flight service system. The system is of a five-level distributed structure and comprises a communication layer, a data access layer, a data processing layer, a service layer and a management layer, the communication layer serves as a data exchanging center of other equipment in the distributed low-altitude flight service system, the five layers are independent of one another and arranged in a separated mode, while the freedom degrees of all the other layers are improved, the whole system is not affected, the problems that an existing low-altitude flight service system has too many service systems and burdensome processing tasks and is poor in network robustness, adaptability and expandability are solved, and the distributed low-altitude flight service system has the advantages of being good in expandability, convenient to manage and high in reliability.
Description
Technical field
The present invention relates to space flight and aviation technical field, particularly, relate to a kind of distributed low-latitude flying service system and method for work thereof.
Background technology
Air traffic control system is one provides the computer information system of flight planning, flight information, notice to airmen, meteorology, target situation and other aviation value-added service for the non-AIRLINE & AIRPORT class aircraft under all aircrafts of less than 3000 meters and all height that flies.System of the prior art be one typical special, in real time, the distributed system that mission is great, by redundant local area network and bypass data disposal system net, each system unit such as messaging device and workstation is coupled together, collaborative work, and with radar/ADS-B(Automatic Dependent Surveillance Broadcast, Automatic dependent surveillance broadcast) information source, AFTN AFTN, the various related data exchange network interconnection such as meteorological equipment and other air traffic control automation disposal system, carry out data, telegram, the exchange of control information.
Low-latitude flying service system of the prior art is by control seat (director's control seat), flight planning seat (assistant's control seat), flight planning coordinates seat, technical maintenance seat, system monitor position, radar signal front-end processing and data assignment subsystem, system front end data process subsystem, radar data processing subsystem, flight visual simulation subsystem, bypass data disposal system radar data processing subsystem, database subsystem, network subsystem, network data recording and playback subsystem, the subsystems such as gps clock subsystem are formed.
The system architecture that traditional Civil Aviation ATM system adopts just accesses dissimilar blank pipe information data merely respectively, and then transfer data to corresponding handling procedure and directly process and export independent results, the data of these programs are all in same LAN (Local Area Network).Traditional low-latitude flying service system also has following deficiency:
1, when increasing the different model of a kind of type remote end station or existing type newly, the business data processing part of system need be changed;
2, background service and seat, front end and data communication are highly coupled;
3, all data processings all to need in same LAN (Local Area Network) even Same Physical position;
4, need change and restart multiple even all-network node when certain network node of low-latitude flying service system is deleted or newly accessed;
5, when the primary server of certain business data processing is delayed machine, standby server, owing to not using identical file system with primary server, is difficult to ensure consistance;
6, because the height at data processing and seat is coupled, the customization of system is reduced, increases the construction difficulty of remote tower system.
Summary of the invention
Object of the present invention is just the shortcoming and defect overcoming above-mentioned prior art, a kind of distributed low-latitude flying service system is provided, this distributed low-latitude flying service system is using the data switching center of communication layers as other equipment in distributed low-latitude flying service system, other each layers are enable to be separated setting, do not affect whole system while improving other each layer degree of freedom, solve that low-latitude flying service system service system is various, Processing tasks is heavy, the problem of network robustness, adaptability and poor expandability; Present invention also offers the method for work of this system.
The present invention's adopted technical scheme that solves the problem is:
Distributed low-latitude flying service system, comprises communication layers, and communication layers is the data switching center of other equipment in distributed low-latitude flying service system.
As a further improvement on the present invention, above-mentioned distributed low-latitude flying service system adopts Pyatyi distributed frame, also comprises data access layer, data analysis layer, service layer and administration and supervision authorities, wherein:
Data access layer, gives communication layers for receiving sensor data and remote station Data Concurrent, and data retransmission communication layers being issued remote station is to remote station;
Data analysis layer, for processing sensing data and remote station data content, the request of respond services layer and remote station;
Communication layers, for the sensing data of reception or remote station data are sent to data analysis layer, and receives the request of service layer and data access layer and the result that obtaining request is corresponding from data analysis layer returns to service layer or data access layer;
Service layer, for carrying out man-machine interaction with user, receiving user's request, and by communication layers, request being sent to data analysis layer, and the result obtained from data analysis layer is shown to user;
Administration and supervision authorities, for monitoring the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link.
Further, also transmission data are changed in described data access layer: after sensing data and remote station data being converted to IP packet according to ICP/IP protocol, issue communication layers; The protocol conversion that IP packet communication layers being issued remote station uses according to remote station is for sending to remote station after remote data bag.
Further, described administration and supervision authorities comprise overall service management master server and at least one overall service management standby server; When overall situation service management master server is normal, by overall service management master server, the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link are monitored; When overall situation service management master server breaks down, by a wherein overall service management standby server, the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link are monitored.
Further, described administration and supervision authorities also comprise overall heartbeat management server, described overall service management master server and all overall service management standby servers are all provided with heartbeat service module, and this heartbeat service module timing sends heartbeat message to overall heartbeat management server.
Further, described data access layer comprises at least one industrial computer, and described industrial computer comprises conversion unit of protocol and physical interface.
Further, described data analysis layer comprises multiple business data processing server cluster, a kind of business datum of each business data processing server cluster process; Each business data processing server cluster comprises a master server and at least one standby server, and when master server normally works, master server is received and dispatched business datum, read and write and process, and standby server only receives, read in and process business datum; When master server breaks down, take over the work of master server by wherein standby server.
Further, described service layer comprises at least one service professional seat, and each service professional seat has IO interface.
The method of work of distributed low-latitude flying service system, comprises data receiver process and user asks process; Described data receiver process comprises the following steps:
S11: data access layer receiving sensor data and remote station data also send to communication layers after being converted to IP packet;
S12: the sensing data of reception and remote station data are sent to data analysis layer by communication layers;
S13: data analysis layer processes the data that communication layers is sent to;
Described user asks process to comprise the following steps:
S21: service layer receives user's request, and user's request is sent to communication layers;
S22: user's request is sent to data analysis layer by communication layers;
S23, data analysis layer process user request, send to communication layers by the result that user asks;
The result that user asks is transmitted to service layer by S24, communication layers;
The result that user asks is shown to user by S25, service layer.
Further, the method for work of above-mentioned distributed low-latitude flying service system, also comprises remote station service processing, specifically comprises the following steps:
S31: data access layer receives remote station request msg, and this remote station request msg is converted to IP Packet Generation to communication layers;
S22: communication layers will comprise the IP Packet Generation of remote station request msg to data analysis layer;
S23, the request of data analysis layer process remote station, send to communication layers by the result of remote station request;
The result of remote station request is transmitted to data access layer by S24, communication layers;
The result data of remote station request is converted to the protocol conversion that uses with remote station for sending to remote station after remote data bag by S25, data access layer.
To sum up, the invention has the beneficial effects as follows:
1, distributed low-latitude flying service system of the present invention is provided with administration and supervision authorities, communication layers, service layer, operation layer and data access layer, and by these 5 layer solution couplings, employing separate mode builds, each layer is made to be convenient to independent expansion and to delete and be independent of each other, do not affect whole system while improving the degree of freedom of each layer design to greatest extent, solve that operation system in prior art is various, Processing tasks is heavy, the problem of network robustness, adaptability and poor expandability.
2, whole low-latitude flying service system of the present invention adopts distributed structure/architecture, each layer can be in a LAN (Local Area Network) also can be in different LAN (Local Area Network), same geographic position can be in and also can be in different geographic position, there is outstanding extensibility, can easily for each layer provides function to strengthen;
3, in distributed low-latitude flying service system of the present invention, when increasing remote station or the sensor of dissimilar or model newly, not needing the business data processing part of changing data analysis layer, only needing to change at data access layer, changing very convenient;
4, in distributed low-latitude flying service system of the present invention, the System Routing Table of administration and supervision authorities only first need be upgraded when certain network node is deleted or newly access, restarting global administration's server successively, without the need to restarting other multiple network nodes, managing convenient;
5, in distributed low-latitude flying service system of the present invention, administration and supervision authorities, data analysis layer adopt active and standby Servers installed, and when master server is delayed machine, standby server will act on behalf of master server work, work completely not the machine of being delayed affect, system reliability is high;
6, in distributed low-latitude flying service system of the present invention, due to the independence of service layer, make to build not containing the low cost of data analysis layer, data access layer and administration and supervision authorities long-range unmanned/Attended mode approach tower system becomes possibility, can be used for instructing the design of navigation information service station system, approach tower system (unmanned/to have people), airport information system and navigation enterprise fortune Ore-controlling Role to implement.
Accompanying drawing explanation
Fig. 1 is distributed low-latitude flying service system structural representation of the present invention.
Embodiment
The present invention proposes a kind of newly to ADS-B land station, VHF (Very High Frequency, very high frequency(VHF)) the information taken processing mode of land station, photoelectric detection equipment, low latitude primary radar, low latitude secondary radar, (robotization) weather station and Big Dipper earth station equipment, and the new design of background computer Integrated Information Processing System and framework, this design and framework are distributed low-latitude flying service system of the present invention, system comprises communication layers, is the data switching center of other equipment in distributed low-latitude flying service system by communication layers.
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.By ADS-B land station, VHF land station, photoelectric detection equipment, low latitude primary radar, low latitude secondary radar, weather station and Big Dipper earth station equipment common name remote station in following examples, namely remote station refers to one or more.
Embodiment 1:
As shown in Figure 1, distributed low-latitude flying service system, adopts Pyatyi distributed frame, comprises communication layers, data access layer, data analysis layer, service layer and administration and supervision authorities, wherein:
Data access layer, gives communication layers for receiving sensor data and remote station Data Concurrent, and data retransmission communication layers being issued remote station is to remote station; Further, also transmission data are changed in described data access layer: after sensing data and remote station data being converted to IP packet according to ICP/IP protocol, issue communication layers; The protocol conversion that IP packet communication layers being issued remote station uses according to remote station is for sending to remote station after remote data bag;
Data analysis layer, for processing sensing data and remote station data content, the request of respond services layer and remote station;
Communication layers, for the sensing data of reception or remote station data are sent to data analysis layer, and receives the request of service layer and data access layer and the result that obtaining request is corresponding from data analysis layer returns to service layer or data access layer;
Service layer, for carrying out man-machine interaction with user, receiving user's request, and by communication layers, request being sent to data analysis layer, and the result obtained from data analysis layer is shown to user;
Administration and supervision authorities, for monitoring the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link.
Distributed low-latitude flying service system in the present embodiment, by 5 layer decoupling zeros, makes every layer of unified external interface.5 layers can be in different LAN and physical location.Below the composition of each layer and working method are described.
One, administration and supervision authorities
Described administration and supervision authorities comprise overall service management master server and at least one overall service management standby server, keep strong consistency between the two and Complete Synchronization.
When overall situation service management master server is normal, by overall service management master server, the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link are monitored; When overall situation service management master server breaks down, replace overall service management master server by a wherein overall service management standby server and the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link are monitored.Overall situation service management master server and all overall service management standby servers store the System Routing Table of data access layer, communication layers, data analysis layer, service layer's all devices.Only first need upgrade the System Routing Table of administration and supervision authorities when certain apparatus for network node of distributed low-latitude flying service system is deleted or newly accessed, then restart global administration's server successively, do not need change and restart multiple even overall network node.
Described administration and supervision authorities also comprise overall heartbeat management server, described overall service management master server and all overall service management standby servers are all provided with heartbeat service module, and this heartbeat service module timing sends heartbeat message to overall heartbeat management server.Overall situation service management master server and overall service management standby server, by overall heartbeat management service management, ensure a server and normally work; Overall situation heartbeat management server, due to without pressure, it has been generally acknowledged that it can not break down, if it breaks down, then manual intervention must could recover normal.Administration and supervision authorities also have equipment and the business monitoring module of sensor and far-end, for equipment provides equipment and communication link monitoring function with communicating.
Two, data access layer
Data access layer is made up of the industrial computer of the multiple physical interface of one or more easily extensible, and described industrial computer comprises conversion unit of protocol and physical interface.These industrial computers are all present in a LAN (Local Area Network), the data layout that the remote station data of each remote station equipment collection of different physical interface and data protocol and all kinds of blank pipe information datas of sensor collection are converted to unified data exchange agreement by them uses IP agreement to mail to communication layers by RJ45 interface, and the IP packet simultaneously communication layers sent sends after being converted to corresponding each remote station or the discernible agreement of other connecting system and physical transfer mode.Above-mentioned physical interface includes but not limited to RS232 serial bus interface, Industrial Ethernet physical interface, CAN physical interface, RS485 physical interface.
In the present embodiment, at data access layer by remote station data, sensing data access low-latitude flying service system communication network, realize remote station, the polytype hardware interface of external sensor is converted to RJ45 interface, outside various communications protocols is converted to ICP/IP protocol simultaneously.During when newly-increased a kind of newtype or with the remote station of existing type different model or sensor, do not need the business data processing part of the data analysis layer of change system, only need to carry out changing at data access layer, little to systematic influence, extensibility good.
Traditional aeronautical data terrestrial transmission uses HDLC(High level Data Link Control, High-Level Data Link Control) etc. serial port protocol, adopt when long-distance transmissions digital signal to be converted to light signal and coordinate junction network to realize.Growing along with computer network, the particularly development of IP host-host protocol and technology, the construction of the express network spread all over the country and upgrading, make in telecommunications VPN or private network, use the important aeronautical data of the remote Lossless transport of IP agreement to become possibility.Therefore between data access layer and communication layers, aeronautical data is converted to IP packet in the present embodiment to transmit, transmission speed is fast, reliability is high.
Three, data analysis layer
Data analysis layer comprises multiple business data processing server cluster, a kind of business datum of each business data processing server cluster process.In the present embodiment, business data processing comprises: information data process, monitoring data process, Big Dipper business data processing and spatial domain data processing, and can with type of need activating business; Therefore the business data processing server cluster correspondence in the present embodiment is provided with information data processing server cluster, monitoring data processing server cluster, Big Dipper business data processing server cluster and spatial domain data processing server cluster, and after type of service expansion, correspondence sets up corresponding server cluster.The business datum that the process of each business data processing server cluster is dissimilar, data are issued corresponding business data processing server cluster according to the data type of each business data processing server cluster process by communication layers.Each business data processing server cluster comprises a master server and at least one standby server, and when master server normally works, master server is received and dispatched business datum, read and write and process, and standby server only receives, read in and process business datum; When master server breaks down, take over the work of master server by wherein standby server.
Each business data processing server cluster of data analysis layer has data processing module, and this module mainly realizes the parsing of remote station data or sensing data message content and adopts the analysis based on large data to complete multiple senior computation; Concrete disposal route and algorithm adopt process same as the prior art, repeat no more in the present embodiment.
In the present embodiment, multiple business data processing server cluster can be in different LAN and physical location, and therefore system is laid and do not limited position.
Below for monitoring data processing server cluster, the method for work of business data processing server cluster is described:
The process of monitoring data processing server cluster charge of overseeing data and access, bear real data processing and access pressure, be made up of to multiple standby server a master server and one, master server is as the host node of monitoring data processing server cluster, there is provided monitoring data to receive and dispatch, read and write and process, standby server then only provides data to conquer business, reads to serve and process service and ensure in these standby server nodes, have one and master server guarantee strong consistency at least, remaining standby server and master server ensure final consistency.
The health status of monitoring data Processing Cluster is managed by overall service management master server, overall situation service management master server sends management information to monitoring data Processing Cluster, and ensure a monitoring data processing server and normally work, the machine if master server is delayed, overall situation service management master server initiates distributed election (Paxos in this cluster, distributed consensus agreement) produce the master server that new master server replaces machine of originally delaying and work on, but still have a bit of time to need to interrupt data to send out service and service of writing to switch to new master server.
If the Servers-all of monitoring data processing server cluster shares a distributed file system, be stateless by the file system ensureing monitoring data processing server cluster, the new master server produced by distributed election can work in original file system.Therefore, in data analysis layer, when the primary server of certain business data processing server cluster is delayed machine, continuation works by standby server in original distributed file system, work completely not the machine of being delayed affect.
Four, communication layers
Communication layers can be a communication data processing server also can be that a communication data Processing Cluster (this aggregated structure will be consistent with above-mentioned monitoring data Processing Cluster) forms, the major function of this layer is the request receiving service layer and data access layer, send to data analysis layer, and return to service layer and data access layer from the result that data analysis layer obtaining request is corresponding.Communication layers has data communication module, this module mainly realizes ICD(Interface Control Document interface control document inside and outside remote station data message, sensing data message content) conversion, pre-service, effectively verification, Data classification, business addressing, synchronous and asynchronous conversion and data retransmission, these process adopt communication process mode conventional in available data, repeat no more its implementation in the present embodiment.
Communication layers is when the request of first treated service layer or data access layer, overall service management master server inquiry to administration and supervision authorities can obtain the business data processing server cluster routing iinformation of request results, and by its buffer memory, follow-uply will directly to communicate with corresponding business data processing server cluster; For avoiding a large amount of inquiry first to wash away administration and supervision authorities, administration and supervision authorities increasing load balancing, partial query work can be shared by overall service management standby server.
When communication layers has had enough routing iinformations, direct and business data processing server set group communication have been carried out work by it, thus real pressure and flow are shared by each business data processing server cluster, and have processed the work of needs.
Five, service layer
Service layer is made up of one or more service professional seats, often organize seat and the man-machine interface of accessing corresponding business datum is provided, the front end of service layer has display module, for user provides friendly User Interface, services request is mail to communication layers by service layer, request is sent to data analysis layer and the result that obtaining request is corresponding from data analysis layer by communication layers, this result returns to service layer, the request results obtained from communication layers is just presented at HMI(Human Machine Interface by service layer, man-machine interface) on.
To sum up, the distributed low-latitude flying service system tool in the present embodiment has the following advantages:
1, the distributed low-latitude flying service system in the present embodiment, by 5 layer decoupling zeros, makes every layer of unified external interface;
2, when newly-increased different model or type remote end station or sensor, do not need the business data processing part of changing system data processing layer, only need to change at data access layer;
3, the layer of system can be in different LAN and physical location, and the different business cluster of data analysis layer can be in different LAN and physical location equally;
4, only first need upgrade the System Routing Table of administration and supervision authorities management when certain network node of low-latitude flying service system is deleted or newly accessed, restart global administration's server successively;
5, when the primary server of certain business data processing is delayed machine, continuation works by standby server in original distributed file system, time work completely not the machine of being delayed affect;
In addition, due to the independence of service layer, the low-latitude flying service system of a low cost can only be made up of service layer and communication layers, only the communication layers of low-cost system need be pointed to the administration and supervision authorities of a complete distributed low-latitude flying service system, the service layer of low-cost system will not can be appreciated that its data are not from local but another system.Therefore make to build not containing the low cost of data analysis layer, data access layer and administration and supervision authorities long-range unmanned/Attended mode approach tower system becomes possibility, the data of this system may the communication layers of certain complete low-latitude flying service system of several kilometers far away obtain from being positioned at.
The method of work of distributed low-latitude flying service system, comprise data receiver process, user ask process and remote station service processing;
Described data receiver process comprises the following steps:
S11: data access layer receiving sensor data and remote station data also send to communication layers after being converted to IP packet;
S12: the sensing data of reception and remote station data are sent to data analysis layer by communication layers;
S13: data analysis layer processes the data that communication layers is sent to;
Described user asks process to comprise the following steps:
S21: service layer receives user's request, and user's request is sent to communication layers;
S22: user's request is sent to data analysis layer by communication layers;
S23, data analysis layer process user request, send to communication layers by the result that user asks;
The result that user asks is transmitted to service layer by S24, communication layers;
The result that user asks is shown to user by S25, service layer.
Described remote station service processing, comprises the following steps:
S31: data access layer receives remote station request msg, and this remote station request msg is converted to IP Packet Generation to communication layers;
S22: communication layers will comprise the IP Packet Generation of remote station request msg to data analysis layer;
S23, the request of data analysis layer process remote station, send to communication layers by the result of remote station request;
The result of remote station request is transmitted to data access layer by S24, communication layers;
The result data of remote station request is converted to the protocol conversion that uses with remote station for sending to remote station after remote data bag by S25, data access layer.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (10)
1. distributed low-latitude flying service system, is characterized in that, comprise communication layers, and communication layers is the data switching center of other equipment in distributed low-latitude flying service system.
2. distributed low-latitude flying service system according to claim 1, is characterized in that, adopts Pyatyi distributed frame, also comprises data access layer, data analysis layer, service layer and administration and supervision authorities, wherein:
Data access layer, gives communication layers for receiving sensor data and remote station Data Concurrent, and data retransmission communication layers being issued remote station is to remote station;
Data analysis layer, for processing sensing data and remote station data content, the request of respond services layer and remote station;
Communication layers, for the sensing data of reception or remote station data are sent to data analysis layer, and receives the request of service layer and data access layer and the result that obtaining request is corresponding from data analysis layer returns to service layer or data access layer;
Service layer, for carrying out man-machine interaction with user, receiving user's request, and by communication layers, request being sent to data analysis layer, and the result obtained from data analysis layer is shown to user;
Administration and supervision authorities, for monitoring the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link.
3. distributed low-latitude flying service system according to claim 2, is characterized in that, also changes transmission data: issue communication layers after sensing data and remote station data being converted to IP packet according to ICP/IP protocol in described data access layer; The protocol conversion that IP packet communication layers being issued remote station uses according to remote station is for sending to remote station after remote data bag.
4. the distributed low-latitude flying service system according to Claims 2 or 3, is characterized in that, described administration and supervision authorities comprise overall service management master server and at least one overall service management standby server; When overall situation service management master server is normal, by overall service management master server, the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link are monitored; When overall situation service management master server breaks down, by a wherein overall service management standby server, the equipment of data Access Layer, communication layers, data analysis layer, service layer and communication link are monitored.
5. distributed low-latitude flying service system according to claim 4, it is characterized in that, described administration and supervision authorities also comprise overall heartbeat management server, described overall service management master server and all overall service management standby servers are all provided with heartbeat service module, and this heartbeat service module timing sends heartbeat message to overall heartbeat management server.
6. the distributed low-latitude flying service system according to Claims 2 or 3, is characterized in that, described data access layer comprises at least one industrial computer, and described industrial computer comprises conversion unit of protocol and physical interface.
7. the distributed low-latitude flying service system according to Claims 2 or 3, is characterized in that, described data analysis layer comprises multiple business data processing server cluster, a kind of business datum of each business data processing server cluster process; Each business data processing server cluster comprises a master server and at least one standby server, and when master server normally works, master server is received and dispatched business datum, read and write and process, and standby server only receives, read in and process business datum; When master server breaks down, take over the work of master server by wherein standby server.
8. the distributed low-latitude flying service system according to Claims 2 or 3, it is characterized in that, described service layer comprises at least one service professional seat, each service professional seat has IO interface.
9. the method for work of distributed low-latitude flying service system, is characterized in that, comprises data receiver process and user and asks process;
Described data receiver process comprises the following steps:
S11: data access layer receiving sensor data and remote station data also send to communication layers after being converted to IP packet;
S12: the sensing data of reception and remote station data are sent to data analysis layer by communication layers;
S13: data analysis layer processes the data that communication layers is sent to;
Described user asks process to comprise the following steps:
S21: service layer receives user's request, and user's request is sent to communication layers;
S22: user's request is sent to data analysis layer by communication layers;
S23, data analysis layer process user request, send to communication layers by the result that user asks;
The result that user asks is transmitted to service layer by S24, communication layers;
The result that user asks is shown to user by S25, service layer.
10. the method for work of distributed low-latitude flying service system according to claim 9, is characterized in that, also comprise remote station service processing, specifically comprise the following steps:
S31: data access layer receives remote station request msg, and this remote station request msg is converted to IP Packet Generation to communication layers;
S22: communication layers will comprise the IP Packet Generation of remote station request msg to data analysis layer;
S23, the request of data analysis layer process remote station, send to communication layers by the result of remote station request;
The result of remote station request is transmitted to data access layer by S24, communication layers;
The result data of remote station request is converted to the protocol conversion that uses with remote station for sending to remote station after remote data bag by S25, data access layer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818696A (en) * | 2017-10-20 | 2018-03-20 | 西安戴森电子技术有限公司 | The all purpose aircraft monitoring platform of the Big Dipper, ADS B dual links navigation equipment structure |
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