CN107480182A - A kind of spacecraft telemetry source tracing method and system - Google Patents
A kind of spacecraft telemetry source tracing method and system Download PDFInfo
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Abstract
The embodiments of the invention provide a kind of spacecraft telemetry source tracing method and system, methods described to include：Telemetry is received, data processing is carried out to the telemetry, and is traced to the source information code database according to pre-defined data, obtains coded sequence of being traced to the source corresponding to current data processing node；The coded sequence of tracing to the source is added in the telemetry, and the telemetry with the coded sequence of tracing to the source is sent to next data processing node, to cause, when the data that take remote measurement are traced to the source, data publication unit is traced to the source coded sequence according to being superimposed upon in the telemetry each data processing node, obtains the information of tracing to the source of the telemetry.The system is used to perform the above method.The embodiments of the invention provide tracing to the source for a kind of method traced to the source suitable for spacecraft telemetry, particularly fine granularity telemetry.
Description
Technical field
The present embodiments relate to Telemetering Data Processing technical field, and in particular to a kind of spacecraft telemetry side of tracing to the source
Method and system.
Background technology
With the continuous progress of Space Science and Technology, the complexity of spacecraft platform and payload is all improving constantly, to boat
Its task ground segment data service it is also proposed higher requirement.Spacecraft remote measurement is that various information measureds on spacecraft are passed through
Perceive, gather and modulate, the overall process of grounded receiving station, demodulated, record and processing is sent to by antenna.Spacecraft is distant
Surveying data mainly includes Space Vehicle Health data, working condition, abnormal alarm and fault diagnosis parameter, remote control response, spatial loop
Border Monitoring Data, flight mechanics data, attitude data, special sensor data, scientific experimentation data, spaceborne computer internal memory number
According to this and the autonomous data processed result of spacecraft etc..
Spacecraft telemetry system is mainly in the operation principle of space segment：In spacecraft transmitting terminal, pass through variable connector
Selection, each physics telemetry station obtain analog quantity parameter by sensor, complete to digitize into analog-digital converter, are then counted with other
Word amount combines, by predetermined format layout, along with carrying out subcarrier modulation after synchronization character, finally by radio-frequency modulations to
Ground is sent.In ground segment, its operation principle is mainly：Recipient carries out radio demodulating first, is then demodulated by subcarrier
Telemetered signal is obtained, storage, record, display to original telemetry are completed after data syn-chronization is obtained, then passes through network
Different users is sent to, then further advanced treating processing is carried out according to respective demand by all types user, is completed
The multinomial complex task such as spacecraft running state monitoring, Performance Evaluation, trend analysis, fault diagnosis.
In ground segment Develop Data advanced treating process, the demand for information of tracing to the source spacecraft telemetry is increasingly
Highlight.Data are traced to the source, and early stage is also referred to as data origin, are referred to involved in data production, data variation and data transfer
The information such as individual, Responsible Organization, data entity and correlated activation, be to ensure that data obtain the important foundation of reliability,
It is the important references that user effectively assesses data reliability and quality.
In the prior art, data research of tracing to the source focuses primarily upon the fields such as database, scientific workflow, rarely has for space flight
The research that device telemetry is traced to the source.The database data source tracing method of prior art mainly has：Method based on annotation, that is, noting
Middle record is released on auxiliary informations such as data source, author and its evolution histories, and annotation is propagated together with data, Yong Huke
Directly by checking that the annotation of target data obtains a source information for data；Method based on inverted, by inversely inquiring about or
Construct reverse function pair inquiry to invert, source data is traced back to by result, just carried out typically when needing to use data origin information
Calculate.The data of the scientific workflow of prior art, which are traced to the source typically, two methods：Parsed from journal file, this mode is only
Relatively simple information of tracing to the source can be obtained, and any modification adverse current of workflow can not be realized, is of limited application；Second, setting
The retrospect demand of data origin is just fully taken into account when counting workflow engine, by data origin information record to workflow engine
In so that the management of data origin information becomes relatively easy.
Data of the prior art, which are traced to the source, to be had the disadvantages that：The research traced to the source currently for spacecraft telemetry is also very
Few, the achievement in research of other field is not handled targetedly according to the characteristics of spacecraft telemetry, it is difficult to is met
The demand that spacecraft telemetry is traced to the source.Noting is adapted to mini-system, it is difficult to is provided in detail for the fine-grained data of large scale system
Thin data origin information, and need the support of larger storage overhead and data base query language；Inverted method realizes complexity,
User needs to provide inverted function and corresponding checking function, and it is big to calculate time overhead；The method of workflow logs parsing is only
Relatively simple coarse information can be obtained, it is impossible to meet fine-grained data traceability demand；Redesign the side of workflow engine
Method feasibility for the system that operation has been put into is poor.
Therefore, a kind of scheme how is proposed, a kind of method traced to the source suitable for spacecraft telemetry can be proposed, especially
It is tracing to the source for fine granularity telemetry, turns into urgent problem to be solved.
The content of the invention
For in the prior art the defects of, the embodiment of the present invention provides and a kind of spacecraft telemetry source tracing method and is
System.
On the one hand, the embodiment of the present invention provides a kind of spacecraft telemetry source tracing method, including：
Telemetry is received, data processing is carried out to the telemetry, and trace to the source information according to pre-defined data
Code database, obtain coded sequence of being traced to the source corresponding to current data processing node；
The coded sequence of tracing to the source is added in the telemetry, and by the remote measurement with the coded sequence of tracing to the source
Data are sent to next data processing node, and to cause, when the data that take remote measurement are traced to the source, data publication unit is according to each institute
The coded sequence of tracing to the source that data processing node is superimposed upon in the telemetry is stated, obtains the letter of tracing to the source of the telemetry
Breath.
Further, the pre-defined data of the basis are traced to the source information code database, obtain current data processing node pair
The coded sequence of tracing to the source answered, including：
The element of each information of tracing to the source is pre-defined, and defines the encryption algorithm of each information of tracing to the source；
Using the encryption algorithm by the element of each information of tracing to the source, coding of tracing to the source is changed into, forms each described trace back
The data corresponding to source information are traced to the source information code database；
Being traced to the source according to the data, to obtain each data processing operation in current data processing node corresponding for information code database
Coding of tracing to the source, and by each coded combination of tracing to the source, coded sequence of being traced to the source described in acquisition.
Further, methods described also includes：
According to pre-defined data processing time encryption algorithm, obtain current corresponding to the current data processing node
Time encoding, and by current time coding and each coded combination of tracing to the source, coded sequence of tracing to the source described in acquisition.
Further, methods described also includes：Update the encryption algorithm.
Further, it is described that the coded sequence of tracing to the source is added in the telemetry, in addition to：
After the coded sequence of tracing to the source is carried out into data encryption, it is added in the telemetry.
Further, methods described also includes：
The coded sequence that will be traced to the source corresponding to each data processing node is carried out according to the principle of stacking-type first-in last-out
Arrangement, is superimposed upon before the telemetry.
Further, methods described also includes：According to the data trace to the source information code database pre-define decoding algorithm.
Further, methods described also includes：If the current data processing node is the first data processing node, institute
State and the telemetry is carried out also to include data-frame sync before data processing.
On the other hand, the embodiment of the present invention provides a kind of spacecraft telemetry traceability system, including：
At least one processor；And
At least one memory being connected with the processor communication, wherein：
The memory storage has and by the programmed instruction of the computing device, the processor described program can be called to refer to
Order is able to carry out above-mentioned spacecraft telemetry source tracing method.
Another further aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium storing program for executing, it is characterised in that described
Non-transient computer readable storage medium storing program for executing stores computer instruction, and the computer instruction makes the computer perform above-mentioned space flight
Device telemetry source tracing method.
Spacecraft telemetry source tracing method provided in an embodiment of the present invention and system, trace to the source according to pre-defined data
Information code database, the coded sequence of tracing to the source of data processing operation corresponding to each data processing node is obtained, the coding of tracing to the source
Sequence can be used for representing trace to the source information of the telemetry in each data processing node, and needing to take remote measurement, data are traced to the source
When, the coded sequence of tracing to the source being added to through the stack in telemetry is parsed, and can obtain telemetry at each data
Manage the information of tracing to the source of node.Due to being superimposed coded sequence of tracing to the source before each telemetry frame, therefore gradually parsing can be with
The information of tracing to the source of data frame level is obtained, and data frame is decomposed, can further obtain the information of tracing to the source of each telemetry parameter.
Spacecraft telemetry source tracing method in the embodiment of the present invention is applied to the method that spacecraft telemetry is traced to the source, particularly thin
Granularity telemetry is traced to the source.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of spacecraft telemetry source tracing method in the embodiment of the present invention；
Fig. 2 is the sequence schematic diagram of coded sequence of being traced to the source in the embodiment of the present invention；
Fig. 3 is the coded sequence schematic diagram of tracing to the source of the telemetry in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the telemetry frame for the information of tracing to the source that grounded receiving station has been superimposed in the embodiment of the present invention；
Fig. 5 is the schematic diagram of the Telemetering Data Processing issuing process in the embodiment of the present invention；
Fig. 6 is the schematic flow sheet of another spacecraft telemetry source tracing method in the embodiment of the present invention；
Fig. 7 is the structural representation of spacecraft telemetry traceability system in the embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The telemetry of spacecraft sends to grounded receiving station and passes through multiple data processing nodes, until data user,
Wherein, grounded receiving station may be considered first data processing node of telemetry.In embodiments of the present invention, remote measurement number
According to before being issued to data user, each data processing node can carry out the following spacecraft telemetry side of tracing to the source
Method：
Fig. 1 is the schematic flow sheet of spacecraft telemetry source tracing method in the embodiment of the present invention, as shown in figure 1, this hair
The spacecraft telemetry source tracing method that bright embodiment provides includes：
S1, telemetry is received, data processing is carried out to the telemetry, and trace to the source letter according to pre-defined data
Code database is ceased, obtains coded sequence of being traced to the source corresponding to current data processing node；
Specifically, spacecraft telemetry from earth station tracking receive to user issue, it is necessary to undergo reception, record,
Multiple data processing nodes such as transmission, verification, solution frame, calculating, display, interpretation, storage, issue.Entering in the embodiment of the present invention
When row spacecraft telemetry is traced to the source, each data processing node receives the telemetry issued by spacecraft first, to this
Telemetry is handled, and is traced to the source information code database according to pre-defined data, and it is corresponding to obtain current data processing node
Coded sequence of tracing to the source.Different data processing nodes may need to carry out telemetry different data processings, different
Data processing operation, it is corresponding with different coded sequences of tracing to the source.
The information of tracing to the source of data refers to：Involved individual, responsibility in data production, data variation and data transfer
The information such as mechanism, data entity and correlated activation, the information of tracing to the source in the embodiment of the present invention can include：Data processing actions
(it is designated as Iwhat), data processing place (be designated as Iwhere), DPA data processing activity (be designated as Iwho), data processing tools (is designated as
Iwhich), data processing reason (be designated as Iwhy), data processing method (be designated as Ihow) and data processing time (be designated as Iwhen)
Deng.As can be seen that the coded sequence corresponding data of tracing to the source in the embodiment of the present invention handles data processing operation different in node,
That is telemetry is in the information of tracing to the source of each data processing node, therefore coded sequence of tracing to the source can represent telemetry current
The information of tracing to the source of data processing node.
S2, the coded sequence of tracing to the source is added in the telemetry, and by with the coded sequence of tracing to the source
Telemetry is sent to next data processing node, and to cause, when the data that take remote measurement are traced to the source, data publication unit is according to each
The individual data processing node is superimposed upon the coded sequence of tracing to the source in the telemetry, obtains tracing back for the telemetry
Source information.
Specifically, after getting coded sequence of being traced to the source corresponding to current data processing node, the coded sequence of tracing to the source is folded
It is added in telemetry, and the telemetry for being superimposed with coded sequence of tracing to the source is sent to next data processing node, next number
Identical action is performed according to processing node.I.e. next data processing node also according to pre-defined data trace to the source information coding
Storehouse, obtains coded sequence of being traced to the source corresponding to the data processing node, and by coded sequence of being traced to the source corresponding to the data processing node
It is added in telemetry, the rest may be inferred.When the data that need to take remote measurement are traced to the source, by data publication unit according to each data
Processing node is superimposed upon the coded sequence of tracing to the source in telemetry, obtains the information of tracing to the source of telemetry.
As can be seen that if current data processing node is not the of data user that spacecraft telemetry is issued to ground
One data processing node, then the data processing node superposition before current data processing node may be carried in the telemetry
Coded sequence of tracing to the source into telemetry.
Spacecraft telemetry source tracing method provided in an embodiment of the present invention, according to pre-defined data trace to the source information compile
Code storehouse, obtains the coded sequence of tracing to the source of data processing operation corresponding to each data processing node, the coded sequence of tracing to the source can
With for representing trace to the source information of the telemetry in each data processing node, when the data that need to take remote measurement are traced to the source, pass through
The coded sequence of tracing to the source being added in telemetry is parsed, telemetry can be obtained in each data processing node
Trace to the source information.Due to being superimposed coded sequence of tracing to the source before each telemetry frame, therefore gradually parsing can obtain data
The other information of tracing to the source of frame level, and data frame is decomposed, it can further obtain the information of tracing to the source of each telemetry parameter.It is of the invention real
Apply the spacecraft telemetry source tracing method in example and be applied to the method that spacecraft telemetry is traced to the source, particularly fine granularity remote measurement
Data are traced to the source.
On the basis of above-described embodiment, the pre-defined data of the basis are traced to the source information code database, obtain current number
According to coded sequence of being traced to the source corresponding to processing node, including：
The element of each information of tracing to the source is pre-defined, and defines the encryption algorithm of each information of tracing to the source；
Using the encryption algorithm by the element of each information of tracing to the source, coding of tracing to the source is changed into, forms each described trace back
The data corresponding to source information are traced to the source information code database；
Being traced to the source according to the data, to obtain each data processing operation in current data processing node corresponding for information code database
Coding of tracing to the source, and by each coded combination of tracing to the source, coded sequence of being traced to the source described in acquisition.
Specifically, the information of tracing to the source in the embodiment of the present invention includes：Data processing actions (are designated as Iwhat), data processing
Point (is designated as Iwhere), DPA data processing activity (be designated as Iwho), data processing tools (be designated as Iwhich), data processing reason (is designated as
Iwhy), data processing method (be designated as Ihow) and data processing time (be designated as Iwhen).The embodiment of the present invention utilizes configuration file
Element in pre-defined each information of tracing to the source in addition to data processing time, such as element in data processing actions can be with
It is data addition, data deletion, data modification etc..It is above-mentioned to be traced to the source per one kind during actual spacecraft Telemetering Data Processing
It can be many classes that information, which has a variety of elements that may trace to the source information, therefore Iwhat、Iwhere、Iwho、Iwhich、Iwhy、IhowWith
IwhenItself it is also data acquisition system.After defining the element in each information of tracing to the source, the encryption algorithm of each information of tracing to the source is defined,
Using encryption algorithm by each information i.e. I that traces to the sourcewhat、Iwhere、Iwho、Iwhich、IwhyAnd IhowIn element be converted into corresponding to trace back
Source code, the data for forming each information of tracing to the source are traced to the source information code database, are designated as L respectivelywhat、Lwhere、Lwho、Lwhich、LwhyWith
Lhow, naturally it is also possible to all tracing to the source is traced to the source corresponding to information to be encoded into a data and traces to the source information code database.It can incite somebody to action
The encryption algorithm of all information of tracing to the source is predefined as encryption algorithm such as binary coding etc., and different can also be traced to the source
Information is predefined as different encryption algorithms such as：The encryption algorithm of data processing actions is defined as binary coding, by data
The encryption algorithm in processing place is defined as Manchester (manchester) coding.
Obtain each data corresponding to information of tracing to the source to trace to the source after information code database, traced to the source according to the data of each information of tracing to the source
Information code database, coding of being traced to the source in current data processing node corresponding to each data processing operation is obtained, such as：Current
It is A that the addition of progress data, the place of data processing are needed in data processing node, DPA data processing activity is grounded receiving station 1, several
It is B according to handling implement, data processing reason is C, data processing method D, then from corresponding data trace to the source information code database
Search and obtain coding of being traced to the source corresponding to above-mentioned data processing operation.By each coding of tracing to the source according to pre-defined code set
Hop algorithm, by each coded sequence of being traced to the source corresponding to coded combination into current data processing node of tracing to the source.Wherein code set is worthwhile
Method refers to：Tracing to the source for different information of tracing to the source is encoded the method to combine that can follow the principles, such as define
The sortord of each coding of tracing to the source and compress mode etc..
Spacecraft telemetry source tracing method provided in an embodiment of the present invention, by the member for pre-defining each information of tracing to the source
Element, and the encryption algorithm for coding that the element in each information of tracing to the source is converted into tracing to the source, obtain data and trace to the source information code database.
When each data processing node takes remote measurement the processing of data, the data processing actions for obtaining each data processing node are corresponding
Coding of tracing to the source, and the coded combination of tracing to the source of all data processing actions is added in telemetry into coded sequence of tracing to the source.
The coded sequence of tracing to the source can be used for representing trace to the source information of the telemetry in each data processing node, need to take remote measurement
When data are traced to the source, the coded sequence of tracing to the source being added to through the stack in telemetry is parsed, and can obtain telemetry each
The information of tracing to the source of individual data processing node.Due to being superimposed coded sequence of tracing to the source before each telemetry frame, therefore gradually
Parsing can obtain the information of tracing to the source of data frame level, and data frame is decomposed, and can further obtain each telemetry parameter
Trace to the source information, improve spacecraft and trace to the source the precision that the data of information are traced to the source.
On the basis of above-described embodiment, methods described also includes：
According to pre-defined data processing time encryption algorithm, obtain current corresponding to the current data processing node
Time encoding, and by current time coding and each coded combination of tracing to the source, coded sequence of tracing to the source described in acquisition.
Specifically, because data processing time is continually changing, it is impossible to the data of pre-defined data processing time
Information of tracing to the source code database, the embodiment of the present invention have pre-defined data processing time encryption algorithm.Handled and saved according to current data
The current time of point, current time coding corresponding to current data processing node is obtained, and by the current time encoding and other
The remote coded combination of calculation for information of tracing to the source together, obtains the coded sequence of tracing to the source of current data processing node.Wherein data processing
Time encoding algorithm refers to the method that current time is converted to coding, can be binary coding, Manchester
(manchester) coding or other coding methods, the embodiment of the present invention are not specifically limited.
Spacecraft telemetry source tracing method provided in an embodiment of the present invention, time encoding algorithm is individually made a reservation for
Justice, obtain corresponding to each data processing node current time and encode, improve telemetry and trace to the source the accuracy of information.
On the basis of above-described embodiment, methods described also includes：Update the encryption algorithm.
Specifically, in practical application, can be needed to carry out the selection or renewal of encryption algorithm according to task, in addition,
The coded combination algorithm of combination for data processing time encryption algorithm and for coding of tracing to the source, can also be selected as needed
Select and update.Such as：Element in information of tracing to the source adds, then corresponding encryption algorithm needs to be updated, it is necessary to will be newly-increased
The element added is converted into encoding accordingly, or the needs of data processing are different, then can select other encryption algorithms, right
Each element in information of tracing to the source is encoded, and data corresponding to acquisition are traced to the source information code database.
Spacecraft telemetry source tracing method provided in an embodiment of the present invention, the selection and renewal of encryption algorithm are carried out, really
Telemetry has been protected to trace to the source the accuracy of information.
It is described that the coded sequence of tracing to the source is added in the telemetry on the basis of above-described embodiment, also wrap
Include：After the coded sequence of tracing to the source is carried out into data encryption, it is added in the telemetry.
Specifically, when the coded sequence of tracing to the source that current data is handled to node is added in telemetry, will first obtain
To coded sequence of tracing to the source carry out data encryption, then the coded sequence of tracing to the source after encryption is added in telemetry, or directly
Element in information of tracing to the source is converted to by coding of tracing to the source using AES, further obtained corresponding to each data processing node
Trace to the source coded sequence, and the coded sequence of tracing to the source is added in telemetry, improve the safety of the information of tracing to the source of telemetry
Property.
On the basis of above-described embodiment, methods described also includes：
The coded sequence that will be traced to the source corresponding to each data processing node is carried out according to the principle of stacking-type first-in last-out
Arrangement, is superimposed upon before the telemetry.
Specifically, Fig. 2 is the sequence schematic diagram of coded sequence of being traced to the source in the embodiment of the present invention, as shown in Fig. 2 in order to improve
Execution efficiency, coded sequence of tracing to the source between each data processing node are arranged according to the principle of stacking-type first-in last-out, i.e., postorder is held
The coded sequence of tracing to the source of capable data processing node can be inserted into before the coded sequence of tracing to the source of preamble data processing node, according to this
Coded sequence of being traced to the source corresponding to each data processing node is added to before telemetry by method.As shown in Figure 2 (in figure everywhere
Reason node is data processing node in the embodiment of the present invention), what it is close to telemetry is data processing node 1 (i.e. in Fig. 2
Processing node 1) information of tracing to the source (coded sequence represents with tracing to the source), be successively further along data processing node 2 letter of tracing to the source
Breath, data processing node i-1 information of tracing to the source, data processing node i information of tracing to the source, data processing node i+1 letter of tracing to the source
Breath etc..
Spacecraft telemetry source tracing method provided in an embodiment of the present invention, by coding of being traced to the source between each data processing node
Sequence arranges according to the principle of stacking-type first-in last-out, is added to before telemetry, improves the efficiency of data processing execution,
And information encodes to tracing to the source, before the telemetry that is added in a manner of coded sequence of tracing to the source, letter can be significantly compressed
Space needed for breath storage, reduces system storage overhead, and the strategy parsed during use also ensure that and trace to the source need not carry out data
When, system need not store magnanimity information.Meanwhile telemetry source tracing method provided in an embodiment of the present invention, suitable for spacecraft
The scene traced to the source of telemetry, improve spacecraft telemetry and trace to the source the precision of information.
On the basis of above-described embodiment, methods described also includes：It is fixed in advance according to data information code database of tracing to the source
Adopted decoding algorithm.
Specifically, the embodiment of the present invention has pre-defined the encryption algorithm of each information of tracing to the source, and according to the encryption algorithm
The data for obtaining each information of tracing to the source are traced to the source information code database, meanwhile, traced to the source information according to predefined encryption algorithm and data
Code database, decoding algorithm is pre-defined.Fig. 3 is the coded sequence schematic diagram of tracing to the source of the telemetry in the embodiment of the present invention,
As shown in figure 3, the superposition for the coded data of tracing to the source that the embodiment of the present invention is carried out in each data processing node, certainly, if
A certain data processing node does not carry out any data processing to telemetry, then corresponding coded sequence of tracing to the source can be
It is empty.When the tracing to the source of data that take remote measurement is being needed, according to pre-defined decoding algorithm by the coding of tracing to the source before telemetry
Sequence, which carries out parsing, can obtain trace to the source information of the telemetry in each data processing node.Data publication unit is first
The coded sequence of tracing to the source of each data processing node superposition is extracted before telemetry, as shown in Figure 3.According to predefined
Telemetry is traced to the source the decoding algorithm and coded combination algorithm of information, is parsed each data processing node successively and is attached to remote measurement number
According to coded sequence of tracing to the source above, the information of tracing to the source of the data of each data processing node is finally inversed by one by one, i.e., from Cwhat-i、
Cwhere-i、Cwho-i、Cwhich-i、Cwhich-i Chow-iAnd Cwhen-iRestore the readable I of userwhat-i, Iwhere-i, Iwho-i, Iwhich-i,
Iwhy-i, Ihow-i, Iwhen-i。
It is described if current data processing node is the first data processing node on the basis of above-described embodiment
The telemetry is carried out also to include data-frame sync before data processing.
Specifically, in embodiments of the present invention, grounded receiving station is considered as the of spacecraft ground section Telemetering Data Processing
First data processing node of one data processing node, i.e. telemetry when being issued to ground from spacecraft.In the present invention
In embodiment, grounded receiving station be the first data processing node after telemetry is received, advanced row data-frame sync, data
Data processing and other actions are carried out after frame synchronization again.Frame synchronization refers to that recipient should can be from the binary system received
The starting and termination of frame are distinguished in bit stream, when information is transmitted in units of packet between two work stations, it is necessary to will
Data flow on circuit is divided into the frame of packet or HDLC (High-Level Data Link Control) code, is passed with the form of frame
Send.Fig. 4 is the schematic diagram of the telemetry frame for the information of tracing to the source that grounded receiving station has been superimposed in the embodiment of the present invention, such as Fig. 4 institutes
Show, grounded receiving station is receiving telemetry, after completing data-frame sync, is traced to the source letter from the data of each information of tracing to the source in real time
Cease code database Lwhat、Lwhere、Lwho、Lwhich、Lwhich、LhowMiddle extraction is (i.e. current suitable for the coding of tracing to the source of work at present scene
Traced to the source corresponding to data processing operation coding), C is designated as respectivelywhat-1、Cwhere-1、Cwho-1、Cwhich-1、Cwhich-1And Chow-1, and
Current time is encoded using data processing time encryption algorithm, current time coding is obtained and is designated as Cwhen-1.Further according to volume
Code character hop algorithm it is above-mentioned trace to the source coding and current time coded combination together, formed notebook data processing node volume of tracing to the source
Code sequence, before the coded sequence that will finally trace to the source is superimposed upon telemetry frame, forms data frame as shown in Figure 4, to next data
Handle node distribution.
Fig. 5 is the schematic diagram of the Telemetering Data Processing issuing process in the embodiment of the present invention, as shown in figure 5, in remote measurement number
According to processing and issuing process in undergo multiple data processing nodes, in the process, data content constantly changes, data shape
Formula differs and same, and is that whole data receiver processing procedure is completed under distributed environment mostly, time span and spatial extent
It is very big, severe challenge is brought to later stage telemetry reliability assessment, quality testing etc..The embodiment of the present invention proposes
The method that a kind of predefined information of tracing to the source of configuration file, the superposition of stacking-type coding combine with used time parsing, it is distant to solve spacecraft
Survey data traceability especially fine-grained data retrospect problem.The specific implementation process of the embodiment of the present invention is described below, so as to more
The good technical scheme for understanding the embodiment of the present invention：
Fig. 6 is the schematic flow sheet of another spacecraft telemetry source tracing method in the embodiment of the present invention, as shown in fig. 6,
Spacecraft telemetry source tracing method in the embodiment of the present invention specifically includes：
T1, for specific space mission, utilize the element in the predefined information of tracing to the source per class of configuration file；
T2, defined according to mission requirements the encryption algorithm, decoding algorithm, data processing time encryption algorithm of information of tracing to the source with
And coded combination algorithm；
Element in T3, information of using the encryption algorithm for information of tracing to the source every class being traced to the source is converted into coding of tracing to the source, shape respectively
Data into all kinds of information of tracing to the source are traced to the source information code database；
T4, the data processing unit of the telemetry of current space mission data sharing trace to the source information code database,
Data processing time encryption algorithm and coded combination algorithm, decoding algorithm is shared between data publication unit and code set is worthwhile
Method；
T5, each data processing node generation notebook data processing node coded sequence of tracing to the source, and handle node in notebook data
The coded sequence of tracing to the source of notebook data processing node is superimposed before the telemetry of output, is distributed to the back-end.Each data processing node exists
After the data processing function for completing notebook data link, extracted in tracing to the source information code database from data in real time and be applied to work at present field
The coding of tracing to the source of scape, is encoded using data processing time encryption algorithm to current time, obtains current time coding, then root
According to information of tracing to the source coded combination algorithm it is above-mentioned trace to the source coding and current time coded combination together, formed notebook data at
The coded sequence of tracing to the source of node is managed, the coded sequence of tracing to the source of this link is finally superimposed before the telemetry of this link output, to
Distribute rear end；
When T6, the data that need to take remote measurement are traced to the source, data publication unit parses each data processing node and is attached to successively
Coded sequence of tracing to the source before data, the data for being finally inversed by each data processing node one by one are traced to the source information.Need to take remote measurement
When data are traced to the source, data publication unit extracts the coding of tracing to the source of each data processing node superposition before telemetry first
Sequence, the decoding algorithm and coded combination algorithm of information of being traced to the source according to telemetry, it is attached to parse each data processing node successively
The coded sequence of tracing to the source being added in before telemetry, the information of tracing to the source of the telemetry of each processing links is finally inversed by one by one.
Spacecraft telemetry source tracing method provided in an embodiment of the present invention, fine granularity spacecraft telemetry can be realized
Trace to the source (data frame level, telemetry parameter rank)；To tracing to the source, information encodes, and can significantly compress empty needed for information storage
Between, reduce system storage overhead；The strategy of used time parsing also ensure that, when that need not carry out data and trace to the source, system is without storage
Magnanimity information；Data encoding algorithm can need to be selected or updated according to task, and data encoding algorithm can carry out data
Encryption, improve the security for information of tracing to the source；Information of being traced to the source per class can retain expansion interface with absolute coding, be advantageous to improve system
System is traced to the source the autgmentability of information；Each data processing node is only superimposed the information of tracing to the source of notebook data processing node, to each data
It is little to handle the incremental loading of node, is also beneficial to whole system and traces to the source the load balancing of information.In addition, the embodiment of the present invention is adopted
Be superimposed with stacking-type, can effectively reduce the addition of each data processing node trace to the source information when time overhead, be also beneficial to use
Family understands the information of tracing to the source of newest data processing node early；Information configuration of tracing to the source file can need to customize according to task,
Support multitask system；Also, traced to the source coding needed for superposition only before telemetry, the influence to existed system workflow compared with
It is small, it can be used for existing task system.
Fig. 7 is the structural representation of spacecraft telemetry traceability system in the embodiment of the present invention, as shown in fig. 7, described
System can include：Processor (processor) 71, memory (memory) 72 and communication bus 73, wherein, processor 71,
Memory 72 completes mutual communication by communication bus 73.Processor 71 can call the logical order in memory 72,
To perform following method：Telemetry is received, data processing is carried out to the telemetry, and trace back according to pre-defined data
Source information code database, obtain coded sequence of being traced to the source corresponding to current data processing links；The coded sequence of tracing to the source is added to
In the telemetry, and the telemetry with the coded sequence of tracing to the source is sent to next data processing node, so that
, when the data that take remote measurement are traced to the source, data publication unit is superimposed upon the remote measurement number according to each data processing node
Traced to the source described in coded sequence, obtain the information of tracing to the source of the telemetry.
In addition, the logical order in above-mentioned memory 72 can be realized by the form of SFU software functional unit and is used as solely
Vertical production marketing in use, can be stored in a computer read/write memory medium.Based on such understanding, this hair
The part or the part of the technical scheme that bright technical scheme substantially contributes to prior art in other words can be with soft
The form of part product is embodied, and the computer software product is stored in a storage medium, including some instructions are making
Obtain a computer equipment (can be personal computer, server, or network equipment etc.) and perform each embodiment of the present invention
The all or part of step of methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage
Medium storing computer instructs, and the computer instruction makes the computer perform the side that above-mentioned each method embodiment is provided
Method, such as including：Telemetry is received, data processing is carried out to the telemetry, and trace to the source according to pre-defined data
Information code database, obtain coded sequence of being traced to the source corresponding to current data processing node；The coded sequence of tracing to the source is added to institute
State in telemetry, and the telemetry with the coded sequence of tracing to the source is sent to next data processing node, to cause,
When the data that take remote measurement are traced to the source, data publication unit is superimposed upon in the telemetry according to each data processing node
The coded sequence of tracing to the source, obtain the information of tracing to the source of the telemetry.
Device and system embodiment described above is only schematical, wherein described be used as separating component explanation
Unit can be or may not be physically separate, can be as the part that unit is shown or may not be
Physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to the actual needs
Some or all of module therein is selected to realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying
In the case of performing creative labour, you can to understand and implement.
Claims (10)
- A kind of 1. spacecraft telemetry source tracing method, it is characterised in that including：Receive telemetry, to the telemetry carry out data processing, and according to pre-defined data trace to the source information coding Storehouse, obtain coded sequence of being traced to the source corresponding to current data processing node；The coded sequence of tracing to the source is added in the telemetry, and by the telemetry with the coded sequence of tracing to the source Send to next data processing node, to cause, when the data that take remote measurement are traced to the source, data publication unit is according to each number According to processing node be superimposed upon in the telemetry described in trace to the source coded sequence, obtain the information of tracing to the source of the telemetry.
- 2. according to the method for claim 1, it is characterised in that the pre-defined data of the basis are traced to the source information coding Storehouse, coded sequence of being traced to the source corresponding to current data processing node is obtained, including：The element of each information of tracing to the source is pre-defined, and defines the encryption algorithm of each information of tracing to the source；Using the encryption algorithm by the element of each information of tracing to the source, coding of tracing to the source is changed into, forms each letter of tracing to the source The data corresponding to breath are traced to the source information code database；Obtain in current data processing node and trace back corresponding to each data processing operation according to data information code database of tracing to the source Source code, and by each coded combination of tracing to the source, coded sequence of being traced to the source described in acquisition.
- 3. according to the method for claim 2, it is characterised in that methods described also includes：According to pre-defined data processing time encryption algorithm, current time corresponding to the current data processing node is obtained Coding, and by current time coding and each coded combination of tracing to the source, coded sequence of tracing to the source described in acquisition.
- 4. according to the method in claim 2 or 3, it is characterised in that methods described also includes：Update the encryption algorithm.
- 5. according to the method for claim 1, it is characterised in that described that the coded sequence of tracing to the source is added to the remote measurement In data, in addition to：After the coded sequence of tracing to the source is carried out into data encryption, it is added in the telemetry.
- 6. according to the method for claim 1, it is characterised in that methods described also includes：Coded sequence of being traced to the source corresponding to each data processing node is arranged according to the principle of stacking-type first-in last-out, It is superimposed upon before the telemetry.
- 7. according to the method for claim 1, it is characterised in that methods described also includes：Traced to the source information according to the data Code database pre-defines decoding algorithm.
- 8. according to the method for claim 1, it is characterised in that methods described also includes：If the current data processing section Point is the first data processing node, then described that the telemetry is carried out also to include data-frame sync before data processing.
- A kind of 9. spacecraft telemetry traceability system, it is characterised in that including：At least one processor；AndAt least one memory being connected with the processor communication, wherein：The memory storage has can be by the programmed instruction of the computing device, and the processor calls described program instruction energy Enough perform the method as described in any one of claim 1 to 8.
- 10. a kind of non-transient computer readable storage medium storing program for executing, it is characterised in that the non-transient computer readable storage medium storing program for executing is deposited Computer instruction is stored up, the computer instruction makes the computer perform the method as described in any one of claim 1 to 8.
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