CN102571824A - Astronomical telescope network collaborative observation method based on four-layer structure - Google Patents
Astronomical telescope network collaborative observation method based on four-layer structure Download PDFInfo
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- CN102571824A CN102571824A CN2012100594176A CN201210059417A CN102571824A CN 102571824 A CN102571824 A CN 102571824A CN 2012100594176 A CN2012100594176 A CN 2012100594176A CN 201210059417 A CN201210059417 A CN 201210059417A CN 102571824 A CN102571824 A CN 102571824A
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Abstract
The invention belongs to the technical field of astronomical information science, and discloses an astronomical telescope network collaborative observation method based on a four-layer architecture 'astronomical telescope agent-observation base control center-service center-client ' (as figure 1). The method comprises the following contents: (1) an observation result real-time sharing method, mainly comprising an observer three-level authorization system and an observation result multipoint multipath transmission scheme; (2) an astronomical telescope control right online transfer method, mainly comprising an astronomical telescope control right formal description technology and a finite state automaton-based right transforming technology; (3) an observation instruction control protocol and an observation data transmission protocol. The method is suitable for the application scene of simultaneously and remotely controlling multiple large-scale astronomical telescopes on the Internet to collaboratively observe the same observation object.
Description
Technical field
The invention belongs to astronomical informatics technical field; Be a kind of astronomical telescope network cooperating observation procedure, be applicable to that on the internet many large-scale astronomical telescopes of Long-distance Control are worked in coordination with the application scenarios of observing to same observed object simultaneously based on " telescope agency-observation base control centre-service centre-client " four layer architectures.
Background technology
The appearance of Robotic telescope technology and broadband network popularize and extend to the observation base; Astronomical observation person can pass through the telescopical digital interface of Robotic with the long-range use astronomical telescope of the form of " client-server " based on the Internet, just can carry out astronomical observation thereby realize staying indoors.This mode field observation mode has than before made things convenient for the observer greatly, but only limits to single telescopical network remote observation, and unresolved observer controls many large telescopes in strange land are worked in coordination with observation to same target demand simultaneously.
Summary of the invention
(1) the application's motion technical problem that will solve
The present invention provides a kind of astronomical telescope network cooperating observation procedure of four layer architectures, comprising: observed result Real-Time Sharing method; The online transfer method of telescope control; Observation commands for controlling agreement; The observation data host-host protocol.
(2) key point of brief description desire protection and corresponding technique effect
Key point 1; Observation system based on the level framework; I.e. " telescope agency-observation base control centre-service centre-client " four layer architectures; Through this observation system, shielded all kinds of telescopical loaded down with trivial details details of operations to the observer, the observer can carry out network cooperating observation simultaneously with many telescopes of mode Long-distance Control of unanimity.
Key point 2, observation commands for controlling agreement.Observation commands for controlling agreement comprises three types: control class: need be by the relevant information of telescope proxy response; Response class: telescope proxy response control category information, and feedback processing result; System mode class: comprise system quiescence state information and multidate information; Static information comprises systematic name, telescope installation site etc.; Multidate information is telescopical real-time working state, is pushed to observation base control centre and service centre by telescope agency timing initiatively.
Technique effect: control protocol guarantees that the observer can the telescopical operating state of on-line monitoring, and can control telescopical sensing action in real time, guarantees the time for exposure that it points to observed object and controls telescope CCD.
Key point 3, the observation data host-host protocol.Data Transport Protocol is by beginning flag, packet, and check code, end mark is formed.Beginning flag is a character string: " RCSS ", end mark is a character string: " RCSE ".The unified little endian mode that adopts of packet, integer type data in the packet need convert little endian mode into before getting into network, after network download, then need do inverse conversion.
Technique effect: the observation data host-host protocol guarantee observed result from the telescope agency to client in real time, at a high speed, the transmission of safety.
Key point 4, observed result Real-Time Sharing method.Mainly comprise three grades of mandate systems of observer and observed result multiple spot multiplexing scheme.According to grade, can the observer be divided into three grades: telescope effector, the collaborative observer of telescope and general observer to the observed result Share Permissions.The telescope effector has control authority completely to telescope, can control telescopical sensing, set its shooting time, after taking, can see observed result in real time; Telescope collaborative observer carry out can not controlling telescope between observation the effector, but can see effector's control action and after the effector takes, can see observed result synchronously; General observer carries out can not controlling telescope between observation the effector, can not after taking, see observed result synchronously, and can only see effector's control action.Observed result multiple spot multiplex techniques is realized distributing in real time to the observed result of client from telescope agency, observation base control centre, service centre based on the observation data host-host protocol.
Technique effect: through observed result Real-Time Sharing method, the collaborative observer of telescope effector and telescope can obtain observed result simultaneously.
Key point 5, the online transfer method of telescope control.Mainly comprise telescope control formalized description technology and based on the authority switch technology of finite-state automata.The telescope control adopts
p=
d,
m,
c,
uThe quadruple notation mode, wherein
pThe expression authority,
dRepresent telescopical dome state,
mRepresent telescopical sensing coordinate,
cThe state of expression telescope CCD,
uExpression has the user of control.The authority conversion realizes based on the finite-state automata model.
Technique effect: through the online transfer method of telescope control; Can transfer the telescope control authority to other telescopes collaborative observer temporarily; After control shifts; Should collaborative observer promptly become new telescope effector, telescope effector originally then becomes the collaborative observer of telescope.
(3) total technique effect
The present invention has following advantage and characteristics:
The present invention proposes a kind of method based on " telescope agency-observation base control centre-service centre-client " four layer architectures; Solve the observer and controlled many large telescopes in strange land are worked in coordination with observation to same target demand simultaneously; This method has shielded the loaded down with trivial details details of operation of all kinds of telescopes to the observer, and the observer can carry out network cooperating observation simultaneously with many telescopes of mode Long-distance Control of unanimity.
Astronomical telescope network cooperating observation procedure based on four-layer structure provided by the invention; The observer can obtain observed result simultaneously according to three grades of mandate systems and authorized partner; Simultaneously; The observer also can transfer the telescope control authority to other collaborative observer temporarily, thereby realizes observation control flexibly.
One, description of drawings
Accompanying drawing 1 is " telescope agency-observation base control centre-service centre-client " four layer architecture sketch mapes.
Accompanying drawing 2 is system handles flow charts.
Two,
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail.
A kind of astronomical telescope network cooperating observation procedure based on four-layer structure provided by the invention comprises four parts: telescope agency, observation base control centre, service centre, client.As shown in Figure 1.
The agency is corresponding one by one with the telescope instrument for telescope; Be responsible for accepting the scheduling and the control command of observation base control centre; Drive each functional parts such as telescopical dome, mechanical subsystem, the subsystem of taking pictures; Control command according to the observer is carried out astronomical observation, and observed result is returned to observation base control centre.
Observation base control centre is responsible for each telescope distribution control command, the monitoring operating state in the base; Also be responsible for simultaneously mutual with service centre; Comprise user and safety certification, the observation application is handled, order of response remote control and distribution astronomical observation result etc.
Service centre is responsible for to the observation user spendable all telescopical unified view in the system being provided; Service centre receives operation and the control command that the user submits to from client; Control command is sent to the observation base control centre at target telescope place, accept the observed result that service centre beams back and return to the observer.
Client is the instrument that the user uses service centre, supports B/S and C/S dual mode, is the Web browser under the B/S mode, and like IE, Firefox, Opera etc., the C/S mode then is an application program.
Among the present invention, astronomical telescope network cooperating observation flow process comprises following step.As shown in Figure 2.
Step S2.1: start telescope agency and observation base control centre successively, observation base control centre and each telescope agency set up control channel and data transmission channel.
Step S2.2: start service centre; Service centre sends the available devices query messages to each observation base control centre; Each observes the base feedback query result of control centre; Service centre merges the available devices tabulation of each observation base feedback, sets up the unified available astronomical telescope tabulation of whole system.Service centre and each observation base control centre set up control command passage and data transmission channel, the data structure of each passage of initialization.
Step S2.3: the special services port is monitored by service centre, the observation request of reception and customer in response end.
Step S2.4: service centre reads relevant information, directly to client return messages request results.
Step S2.5: service centre accepts the query requests of client, returns the tabulation of all astronomical telescopes available in the current system to client.
Step S2.6: service centre returns disabled user's message to client.
Step S2.7: confirm the affiliated target observation base control centre of telescope that client-requested is used.
Step S2.8: service centre break off with client between be connected.
Step S2.9: service centre sends instruction to target observation base control centre, notice observation base this user's of cancellation of control centre telescope control authority.
Step S2.10: service centre's notice client is obtained the power of checking.
Step S2.11: service centre sends user authentication information through the control command passage to target observation base control centre, confirms whether observation base control centre gives this user and observe authority.
Step S2.12: the notice client is obtained control, and the various control commands that client is sent are transmitted to target observation base control centre, and the observed result that obtains is returned to client in real time, carry out normal observation.
As stated, utilize astronomical telescope network cooperating observation procedure, can realize that the observer controls many large telescopes in strange land simultaneously same target is worked in coordination with observation based on four-layer structure.
The above is merely implementation step of the present invention and describes, and is not to be used to limit protection scope of the present invention.
Claims (5)
1. based on the observation system of level framework; Four layer architectures that it is characterized in that " telescope agency-observation base control centre-service centre-client "; Through this observation system; Shielded all kinds of telescopical loaded down with trivial details details of operations to the observer, the observer can carry out network cooperating observation simultaneously with many telescopes of mode Long-distance Control of unanimity.
2. one kind as the described observation commands for controlling of above-mentioned claim 1 agreement; It is characterized in that control class, response class and three types of control commands of system mode class; Control protocol guarantees that the observer can online in real time control telescopical sensing action, guarantees that it points to observed object.
3. one kind as the described observation data host-host protocol of above-mentioned claim 1; Comprised from telescope agency, observation base control centre, service centre to the observation data host-host protocol each layer of client; It is characterized in that each packet by beginning flag, packet, check code; End mark is formed, the observation data host-host protocol guarantee observed result from the telescope agency to client in real time, at a high speed, the transmission of safety.
4. one kind as the described observed result Real-Time Sharing of above-mentioned claim 1 method; It is characterized in that three grades of mandate systems of observer and observed result multiple spot multiplexing scheme; According to grade to the observed result Share Permissions; Can the observer be divided into three grades: telescope effector, the collaborative observer of telescope and general observer; The telescope effector has control authority completely to telescope, can control telescopical sensing, set its shooting time, after taking, can see observed result in real time; Telescope collaborative observer carry out can not controlling telescope between observation the effector, but can see effector's control action and after the effector takes, can see observed result synchronously; General observer carries out between observation the effector; Can not control telescope; Can not after taking, see observed result synchronously; And can only see effector's control action, observed result multiple spot multiplex techniques based on as the described Data Transport Protocol of above-mentioned claim 3 realize distributing in real time to the observed result of client from telescope agency, observation base control centre, service centre.
5. one kind as the online transfer method of the described telescope control of above-mentioned claim 1; It is characterized in that telescope control quadruple form description technique and based on the authority switch technology of finite-state automata, this method supports that the observer transfers the telescope control authority to other collaborative observer temporarily.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108881727A (en) * | 2018-07-26 | 2018-11-23 | 中国科学院紫金山天文台 | A kind of remote events synchronizer |
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| CN1770807A (en) * | 2005-10-08 | 2006-05-10 | 中国科学院国家天文台南京天文光学技术研究所 | Wireless communication system in astronomical telescope |
| CN101304462A (en) * | 2008-05-27 | 2008-11-12 | 中国科学院国家天文台南京天文光学技术研究所 | Telescope remote control method based on iridium star point-to-point communication mode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108881727A (en) * | 2018-07-26 | 2018-11-23 | 中国科学院紫金山天文台 | A kind of remote events synchronizer |
| CN108881727B (en) * | 2018-07-26 | 2021-03-16 | 中国科学院紫金山天文台 | Remote event synchronization equipment |
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Application publication date: 20120711 |