CN108966283A - A kind of telemetry compression transmitting method, device and computer-readable medium - Google Patents
A kind of telemetry compression transmitting method, device and computer-readable medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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Abstract
The present invention provides a kind of telemetry compression transmitting method, device and computer-readable mediums, comprising: obtains target telemetry；The data that type is floating point type are deleted in target telemetry group, obtain the first telemetry group；And calculate the hop rate of each telemetry in the first telemetry group；Each telemetry in the first telemetry group is ranked up based on hop rate, obtains the second telemetry group；And reject the telemetry that the second telemetry group hopping rate is greater than default hop rate, obtain third telemetry group；Subpackage is carried out to third telemetry group to handle to obtain multiple downlink telemetry parameter packets；The initial parameter packet of satellite is obtained, and initial parameter packet is mapped in multiple downlink telemetry parameter packets, obtains multiple new downlink telemetry parameter packets.This method can be realized the lossless telemetering compression of telemetry, and by error code diffusion control within 2 bytes, the telemetering for microsatellite low bandwidth link provides support.
Description
Technical field
The present invention relates to satellite carried computer telemetering design fields, compress and pass more particularly, to a kind of telemetry
Transmission method, device and computer-readable medium.
Background technique
Satellite in orbit during, the interaction of remote-control romote-sensing channel and Data Channel with being responsible for star data, under normal circumstances,
The link of more than hundred feather weight satellite telemetry channel and Data Channel is to separate, and used frequency range (such as S, X)
Stability, bit rate are relatively high.The real-time telemetry data of usual telemeter channel only pass down delay distant without compression
Survey is partially compressed.The data of Data Channel generally carry out compression design by load side, and satellite platform carries out transparent forwarding.
With the fast development of business space flight, the microsatellites such as cube star, skin Nano satellite are also increasingly by the weight of enterprise
Depending on the country has emerged in large numbers a large amount of commercial satellite company, and has succeeded in sending up tens microsatellites.At present, small to defend
The frequency range that star uses is UV frequency range mostly, it is contemplated that the frame length of the constraint of channel, telemetering design is shorter, downlink data interval
It is long.More telemetries are passed under how under limited channel resource, become business space industry urgent need to resolve
Problem.If it is possible to carry out large scale compression to telemetry, it will the development for promoting business space flight microsatellite mentions
The quality and success rate of high satellite task.
Channel error code is always the maximum problem for perplexing telemetry compression, because once compressing, generates channel error code
Afterwards, due to compression algorithm, one bit probable bit errors will lead to more parameters or even complete package data and can not solve
Analysis.The case where complete package data error code caused by this list bit error code, just belong to error code diffusion problem.
Traditionally, domestic to be all to hold conservative attitude to telemetry compression, because once compressing, it may cause task
Risk.The either moonlet of large satellite or 1000kg or so considers its life cycle, cost, task significance and chain
The reliability on road etc. does not generally use telemetering to compress.And microsatellite considers its task feature and TTC channel
Limitation etc. factors, need a kind of diffusivity it is extremely low and also efficiently compress telemetering algorithm.
Summary of the invention
It can in view of this, the purpose of the present invention is to provide a kind of telemetry compression transmitting method, device and computers
Medium is read, this method can be realized the lossless telemetering compression of telemetry, and be within 2 bytes by error code diffusion control
The telemetering of microsatellite low bandwidth link provides support.
In a first aspect, the embodiment of the invention provides a kind of telemetry compression transmitting methods, comprising: obtain satellite in base
The target telemetry of acquisition when original telemetry parameter carries out simulated flight；Type is deleted in the target telemetry group
For the data of floating point type, the first telemetry group is obtained；And calculate the jump of each telemetry in the first telemetry group
Variability；Each telemetry in the first telemetry group is ranked up based on the hop rate, obtains the second telemetry
Group；And reject the telemetry that the second telemetry group hopping rate is greater than default hop rate, obtain third telemetry
Group；Subpackage is carried out to the third telemetry group to handle to obtain multiple downlink telemetry parameter packets；Obtain the initial parameter of satellite
Packet, and the initial parameter packet is mapped in the multiple downlink telemetry parameter packet, obtain multiple new downlink telemetry parameters
Packet.
Further, the method also includes: the buffer area read it is opposite with each new downlink telemetry parameter packet
The downlink telemetry parameter packet of caching answered, and the new downlink telemetry parameter packet has been cached into downlink telemetry parameter packet with described
It is compared；If it is identical as the downlink telemetry parameter packet that cached to compare the new downlink telemetry parameter packet, really
Fixed do not execute to the new downlink telemetry parameter packet passes down operation, and the first identifier position setting first in virtual parameter packet
Mark；If compare the new downlink telemetry parameter packet from described to have cached downlink telemetry parameter packet different, it is determined that it is right
The new downlink telemetry parameter packet, which executes, passes down operation, and second identifier is arranged in the first identifier position in virtual parameter packet.
Further, the method also includes: operation is passed in the case where determining to execute the new downlink telemetry parameter packet,
And after second identifier is arranged in the first identifier position in virtual parameter packet, to the virtual parameter packet and it is described it is new under
Row telemetry parameter packet, which executes, passes down operation.
Further, the method also includes: held by the virtual parameter packet and the new downlink telemetry parameter packet
After row passes operation down, the downlink telemetry parameter packet that cached is replaced with into the new downlink telemetry parameter packet.
Further, to the third telemetry group carry out subpackage handle to obtain multiple downlink telemetry parameter packets include:
Obtain default subpackage rule；It wherein, include: default subpackage number in the default subpackage rule；According to the default subpackage rule
Subpackage is carried out to the third telemetry group to handle to obtain multiple downlink telemetry parameter packets.
Further, third telemetry group progress subpackage is handled to obtain according to the default subpackage rule multiple
Downlink telemetry parameter packet includes: the default subpackage number obtained in the default subpackage rule；Based on the default subpackage number and institute
Total amount of byte shared by each telemetry parameter in third telemetry group is stated, determines the average byte number of each subpackage；Based on institute
It states average byte number third telemetry group progress subpackage is handled to obtain multiple downlink class telemetry parameter packets.
Further, the hop rate for calculating each telemetry in the first telemetry group includes: to utilize formula α=c/
Sum calculates the hop rate of each telemetry in the first telemetry group, wherein α is hop rate, and c is the first telemetry
The transition times of each telemetry in group, sum are the total quantity of telemetry in the first telemetry group.
Further, the type of the original telemetry parameter is a variety of, every kind of corresponding one group of mesh of original telemetry parameter
Mark telemetry；It includes: described original at every kind that the data that type is floating point type are deleted in the target telemetry group
The data that type is floating point type are deleted in target telemetry corresponding to telemetry parameter.
Second aspect, the embodiment of the invention also provides a kind of telemetry compression transmission devices, comprising: acquiring unit,
For obtaining the target telemetry of satellite acquisition when carrying out simulated flight based on original telemetry parameter；It deletes and calculates and is single
Member obtains the first telemetry group for deleting the data that type is floating point type in the target telemetry group；And it counts
Calculate the hop rate of each telemetry in the first telemetry group；Sequencing unit, for based on the hop rate to described the
Each telemetry is ranked up in one telemetry group, obtains the second telemetry group；And the second telemetry group is jumped
The telemetry that variability is greater than default hop rate is rejected, and third telemetry group is obtained；Subpackage processing unit, for described the
Three telemetry groups carry out subpackage and handle to obtain multiple downlink telemetry parameter packets；Determination unit, for obtaining the original ginseng of satellite
Number packet, and the initial parameter packet is mapped in the multiple downlink telemetry parameter packet, obtain multiple new downlink telemetry ginsengs
Number packet.
The third aspect, the embodiment of the invention also provides a kind of non-volatile program codes that can be performed with analyzer
The step of computer-readable medium, said program code makes the analyzer execute method described in above-mentioned first aspect.
In embodiments of the present invention, telemetry sequence and subpackage again have been subjected to according to hop rate, in subpackage again
In the case where, the repetitive rate of telemetering packet greatly increases, and the efficiency of telemetering compression is effectively raised, to realize telemetry
Lossless telemetering compression, and by error code diffusion control within 2 bytes, the telemetering for microsatellite low bandwidth link provides branch
It holds.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of telemetry compression transmitting method according to an embodiment of the present invention；
Fig. 2 is the flow chart of step S108 in a kind of telemetry compression transmitting method according to an embodiment of the present invention；
Fig. 3 is the flow chart of another telemetry compression transmitting method according to an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of telemetry compression transmission device according to an embodiment of the present invention；
Fig. 5 is the schematic diagram of a kind of electronic equipment according to an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one:
According to embodiments of the present invention, a kind of embodiment of telemetry compression transmitting method is provided, it should be noted that
Step shown in the flowchart of the accompanying drawings can execute in a computer system such as a set of computer executable instructions, and
It, in some cases, can be to be different from sequence execution institute herein and although logical order is shown in flow charts
The step of showing or describing.
The telemetry compression transmitting method provided by the present invention changed, mainly under the microsatellite telemetering of business space flight
Biography takes remote measurement compression design.Switch telemetering amount, state telemetering amount of this compression method just for remaining unchanged for a long period of time are reduced a large amount of
Repetition telemetering under pass.Specific implementation process of the invention is described in further detail below with reference to Fig. 1.
Fig. 1 is a kind of flow chart of telemetry compression transmitting method according to an embodiment of the present invention, as shown in Figure 1, should
Method includes the following steps:
Step S102 obtains the target telemetry of satellite acquisition when carrying out simulated flight based on original telemetry parameter；
Step S104 deletes the data that type is floating point type in the target telemetry group, obtains the first telemetering
Data group；And calculate the hop rate of each telemetry in the first telemetry group；
Step S106 is ranked up each telemetry in the first telemetry group based on the hop rate, obtains
Second telemetry group；And reject the telemetry that the second telemetry group hopping rate is greater than default hop rate, it obtains
Third telemetry group；
Step S108 carries out subpackage to the third telemetry group and handles to obtain multiple downlink telemetry parameter packets；
Step S110 obtains the initial parameter packet of satellite, and it is distant that the initial parameter packet is mapped to the multiple downlink
It surveys in parameter packet, obtains multiple new downlink telemetry parameter packets.
In embodiments of the present invention, telemetry sequence and subpackage again have been subjected to according to hop rate, in subpackage again
In the case where, the repetitive rate of telemetering packet greatly increases, and the efficiency of telemetering compression is effectively raised, to realize telemetry
Lossless telemetering compression, and by error code diffusion control within 2 bytes, the telemetering for microsatellite low bandwidth link provides branch
It holds.
In step s 102, firstly, obtaining original telemetry parameter, then satellite is simulated according to original telemetry parameter
Flight acquires telemetry of the satellite under various operating conditions, obtains target telemetry.
Specifically, original telemetry parameter may include a variety of, for example, the original telemetry parameter of switching value 1, switching value 2
Original telemetry parameter etc..For every kind of original telemetry parameter, simulated flight is carried out to satellite, acquisition satellite is original distant at this
It surveys under parameter, the telemetry under various operating conditions, obtains target telemetry group corresponding with every kind of original telemetry parameter.
After obtaining target telemetry, so that it may execute step S104, delete type in target telemetry group
For the data of floating point type, the first telemetry group is obtained.
Specifically, the data of floating point type are mainly analog quantity, and analog data is generally variable quantity, therefore, in this reality
It applies in example, parameter packet composed by the parameter of floating-point shape parameter is not involved in above-mentioned compression algorithm.
In an optional embodiment, if the type of original telemetry parameter is a variety of, and every kind described original distant
Survey the corresponding one group of target telemetry of parameter；The data that type is floating point type are deleted so in the target telemetry group
Include:
The data that type is floating point type are deleted in the target telemetry corresponding to every kind of original telemetry parameter.
It specifically, in the present embodiment, can be to being rejected in target telemetry corresponding to every kind of original telemetry parameter
Type is the data of floating point type.
After obtaining the first telemetry group, so that it may calculate the jump of each telemetry in the first telemetry group
Rate.
In an optional embodiment, step S104 calculates each telemetry in the first telemetry group
Hop rate includes:
The hop rate of each telemetry in the first telemetry group is calculated using formula α=c/sum, wherein α is to jump
Variability, c are the transition times of each telemetry in the first telemetry group, and sum is telemetering number in the first telemetry group
According to total quantity.
Specifically, in the present embodiment, it can use α=c/sum and count each telemetry in the first telemetry group
Jump situation (that is, hop rate), after obtaining hop rate, so that it may based on hop rate to each in the first telemetry group
A telemetry carries out ascending order or descending sort, obtains the second telemetry group, and by hop rate in the second telemetry group
Telemetry greater than default hop rate (for example, 70%) is rejected, and third telemetry group is obtained.
By actual analysis, after hop rate is greater than 70%, 100 parameters form data packet, and the repetitive rate of data packet is extremely low,
It need not substantially be had compressed.By sequence and subpackage, the quantity of state of most of switching value and part subsystem is substantially not
Variation, the subpackage of composition also have very big repetitive rate, subsequent do are suitble to compress, and the part of internal circulating load and power subsystem is joined
Amount variation is more violent, can not be compressed substantially.
After obtaining third telemetry group, so that it may carry out subpackage processing to third telemetry group, obtain multiple
Downlink telemetry parameter packet.
In an optional embodiment, as shown in Fig. 2, step S108, divides the third telemetry group
Packet, which handles to obtain multiple downlink telemetry parameter packets, to be included the following steps:
Step S201 obtains default subpackage rule；It wherein, include: default subpackage number in the default subpackage rule；
Step S202 handles to obtain multiple according to the default subpackage rule to third telemetry group progress subpackage
Downlink telemetry parameter packet.
In the present embodiment, subpackage rule refers to: according to task situation, giving subpackage quantity pkgCount by designer
(that is, default subpackage number), then the average byte number of each subpackage is pBytes=totalBytes/pkgCount, wherein
TotalBytes is total amount of byte shared by each telemetry parameter in third telemetry group.
Subpackage rule in the embodiment of the present invention be all telemetries in third telemetry group are divided into it is lesser distant
Packet is surveyed, telemetering packet is smaller, then front and back frame repetition rate can correspondingly increase, and convenient for compression, but increases packet header etc. simultaneously without practical meaning
The data of justice.Conversely, Bao Changyue is big, the repetitive rate of before and after frames can become smaller, and be unfavorable for improving compression, but be the reduction of packet header number
According to.
When specific design, the case where designer will be according to real satellite, analyzed, using hop rate as reference frame, knot
The physical significance of association, parameter between conjunction parameter carries out subpackage, reaches optimum efficiency.
In the present embodiment, after determining above-mentioned subpackage rule (that is, default subpackage rule), so that it may obtain default
Default subpackage number in subpackage rule, then, based on each telemetry parameter in default subpackage number and the third telemetry group
Shared total amount of byte determines the average byte number of each subpackage, and based on the average byte number to the third telemetering number
Subpackage is carried out according to group to handle to obtain multiple downlink telemetry parameter packets.
After carrying out subpackage again to the telemetry parameter in third telemetry parameter group according to above-mentioned default subpackage rule, hop rate
Hop rate is relatively low on the whole for the data packet of low telemetry parameter composition.
After obtaining multiple downlink telemetry parameter packets, so that it may obtain the initial parameter packet of satellite, and by initial parameter
Packet is mapped in multiple downlink telemetry parameter packets, obtains multiple new downlink telemetry parameter packets.
In the present embodiment, each downlink telemetry parameter packet in multiple downlink telemetry parameter packets is corresponding one or more distant
Survey parameter.Therefore, in the present embodiment, the type for the specific telemetry parameter that can included according to each downlink telemetry parameter packet
Or initial parameter packet is mapped in multiple downlink telemetry parameter packets by type.For example, including switching value in downlink telemetry parameter packet 1
1 telemetry parameter includes the telemetry parameter of switching value 2 in downlink telemetry parameter packet 2.
Since the initial parameter packet of satellite obtains in real time, when getting the telemetry parameter of pass amount 1 every time, all
The telemetry parameter of pass amount 1 is mapped in downlink telemetry parameter packet 1.
In the present embodiment, a kind of parameter routing module is devised, in module after getting original parameter packet, just
Original parameter packet can be mapped in above-mentioned described multiple downlink telemetry parameter packets, obtain new downlink telemetry parameter
Packet.After obtaining new downlink telemetry parameter packet, so that it may be determined whether based on the telemetry parameter packet cached in buffer area
To being passed under new downlink telemetry parameter packet.
It should be noted that routing module is the floor road extended out in original spaceborne computer telemetering packetization module
By package module.Under normal circumstances, the packing of telemetering is to carry out subpackage according to different subsystems and practical significance, and compress
Algorithm needs to reset parameter, and frame repetition rate similar parameter in front and back is re-grouped package.The effect of routing module is exactly root
According to offline mathematical statistics as a result, by the maps parameter data of original parameter packet into new telemetry parameter packet.
In an optional embodiment, read in the buffer area corresponding with each new downlink telemetry parameter packet
The downlink telemetry parameter packet of caching, and by the new downlink telemetry parameter packet and it is described cached downlink telemetry parameter packet into
Row compares；
If compare the new downlink telemetry parameter packet with described to have cached downlink telemetry parameter packet identical, it is determined that
The new downlink telemetry parameter packet is not executed to pass down and be operated, and the first mark of first identifier position setting in virtual parameter packet
Know；
If compare the new downlink telemetry parameter packet from described to have cached downlink telemetry parameter packet different, it is determined that
The new downlink telemetry parameter packet is executed and passes operation down, and the second mark of first identifier position setting in virtual parameter packet
Know.
In the present embodiment, operation is passed in the case where determining to execute the new downlink telemetry parameter packet, and will be empty
After first identifier position setting second identifier in quasi- parameter packet, to the virtual parameter packet and the new downlink telemetry parameter
Packet, which executes, passes down operation.
Specifically, in the present embodiment, it is pre-designed a kind of virtual parameter packet, without actual physics in the virtual parameter packet
Telemetering, packet header design use same rule with General Physics parameter packet, and bag data domain is fixed as 4 bytes.Wherein, bag data
Domain one physical parameter packet of each bit bit identification, 0 mark is unrelated, the physical parameter packet of 1 representative of the mark bit and a upper packet
It is identical.
4 byte-identifiers of data field of virtual parameter packet duplicate packets of before and after frames, when the data of 4 bytes of data field are
When 0, no duplicate packages are identified, the virtual parameter packet need not pass down at this time, only when data field is non-zero again with physics telemetering packet one
Remove biography.
It, in the present embodiment, can be according to buffer area before row telemetry parameter packet is descended under based on the virtual parameter packet
Downlink telemetry parameter packet is cached, current new downlink telemetry parameter packet is compared and cancels current new downlink if identical
The biography down of telemetry parameter packet, and packet flag bit corresponding in virtual parameter packet is changed to 1.Otherwise, pass down this it is current it is new under
Row telemetry parameter packet, and it is 0 that virtual parameter, which is taken care of yourself corresponding packet mark position,.
In the present embodiment, this method further include: by the virtual parameter packet and the new downlink telemetry parameter packet
It executes after passing operation down, the downlink telemetry parameter packet that cached is replaced with into the new downlink telemetry parameter packet.
Specifically, in the present embodiment, open the buffer area of downlink telemetry parameter packet, buffer area for store it is each under
The data that row telemetry parameter packet last time refreshes.
The purpose of downlink telemetry buffer area is storage history parameters bag data, after the data of each parameter packet form,
The data of buffer area will have been compareed.If the same modifying and corresponding to the position bit of the packet in virtual parameter packet is 1, the bag data
It abandons；The telemetering packet is passed under if not identical, and the data of telemetering report are updated into buffer area.
In conclusion method provided by the present invention can effectively count the switching value for remaining unchanged for a long period of time, will effectively jump
The low parameter of variability is integrated, and data compression is efficiently carried out, the telemetry pressure of the microsatellite suitable for business space flight
It is passed under contracting.
Embodiment two:
Fig. 3 is a kind of flow chart of telemetry compression transmitting method according to an embodiment of the present invention, as shown in figure 3, should
Method includes the following steps:
Step S301 obtains the target telemetry of satellite acquisition when carrying out simulated flight based on original telemetry parameter；
Step S302 judges whether target telemetry includes analog quantity；If it is judged that comprising thening follow the steps
S306；Otherwise, step S303 is executed；
Step S303 counts the hop rate of each telemetry in the first telemetry group, wherein the first telemetry group is
Target telemetry deletes the data after analog quantity；
Step S304, judges whether the hop rate of each telemetry is greater than 70% (default hop rate)；If it is, executing
Otherwise step S306 executes step S305；
The telemetry that second telemetry group hopping rate is greater than default hop rate is rejected, obtains third by step S305
Telemetry group, wherein the second telemetry group is based on the hop rate to each telemetering number in the first telemetry group
According to the telemetry group obtained after being ranked up；
Step S306 generates new telemetering packet；
Wherein, step S302 thens follow the steps S306 in the case where judging comprising analog quantity, i.e. generation and analog quantity
Corresponding new telemetering packet；When step S304 judges to be greater than 70% telemetry comprising hop rate in each telemetry,
S306 is thened follow the steps, that is, generates new telemetering packet corresponding greater than 70% telemetry with hop rate；Step S305 exists
After obtaining third telemetry group, step S306 is executed, that is, generates new telemetering packet corresponding with third telemetry group
(that is, above-mentioned described multiple downlink telemetry parameter packets).
Step S307 by telemetering compression module by the initial parameter packet of satellite, and initial parameter packet is mapped to new
In telemetering packet, multiple new telemetering packets are obtained, wherein multiple new telemetering packets are as follows: the telemetering comprising analog quantity in initial parameter
Packet, the telemetering packet of the telemetry parameter comprising hop rate in initial parameter greater than 70% include telemetry parameter remaining in initial parameter
Telemetering packet (that is, above-mentioned new downlink telemetry parameter packet), remaining telemetry parameter is except analog quantity and hop rate are greater than 70%
Telemetry parameter except other parameters.
Step S308 reads in conjunction with buffer area and corresponding with each new downlink telemetry parameter packet has cached downlink telemetry
Parameter packet, it is determined whether new downlink telemetry parameter packet is executed and passes operation down；Wherein, comprising in initial parameter analog quantity it is distant
The telemetering packet for surveying packet and the telemetry parameter comprising hop rate in initial parameter greater than 70% needs directly execution to pass operation down, without
Judged.
Specifically, downlink telemetry parameter packet phase has been cached with described if comparing the new downlink telemetry parameter packet
Together, it is determined that the new downlink telemetry parameter packet is not executed and pass operation down, and the first identifier position in virtual parameter packet
First identifier is set；If it is different from the downlink telemetry parameter packet that cached to compare the new downlink telemetry parameter packet,
It then determines that the new downlink telemetry parameter packet is executed to pass down and operates, and the first identifier position setting in virtual parameter packet the
Two marks.
Wherein, first identifier position is the flag bit in virtual parameter packet.Without actual physics telemetering in the virtual parameter packet,
Packet header design uses same rule with General Physics parameter packet, and bag data domain is fixed as 4 bytes.Wherein, bag data domain is every
One physical parameter packet of a bit bit identification, 0 mark is unrelated, the physical parameter packet of 1 representative of the mark bit and upper packet phase
Together.
Embodiment three:
The embodiment of the invention also provides a kind of telemetry compression transmission device, telemetry compression transmission device masters
It is used to execute telemetry compression transmitting method provided by above content of the embodiment of the present invention, below to the embodiment of the present invention
The telemetry compression transmission device of offer does specific introduction.
Fig. 4 is a kind of schematic diagram of telemetry compression transmission device according to an embodiment of the present invention, as shown in figure 4, should
Telemetry compression transmission device mainly includes acquiring unit 10, deletes and computing unit 20, sequencing unit 30, subpackage processing are single
Member 40 and determination unit 50, in which:
Acquiring unit 10, for obtaining the target telemetering of satellite acquisition when carrying out simulated flight based on original telemetry parameter
Data；
Deletion and computing unit 20, for deleting the data that type is floating point type in the target telemetry group,
Obtain the first telemetry group；And calculate the hop rate of each telemetry in the first telemetry group；
Sequencing unit 30, for being arranged based on the hop rate each telemetry in the first telemetry group
Sequence obtains the second telemetry group；And the telemetry that the second telemetry group hopping rate is greater than default hop rate is picked
It removes, obtains third telemetry group；
Subpackage processing unit 40 handles to obtain multiple downlink telemetries ginsengs for carrying out subpackage to the third telemetry group
Number packet；
Determination unit 50 for obtaining the initial parameter packet of satellite, and the initial parameter packet is mapped to the multiple
In downlink telemetry parameter packet, multiple new downlink telemetry parameter packets are obtained.
In embodiments of the present invention, telemetry sequence and subpackage again have been subjected to according to hop rate, in subpackage again
In the case where, the repetitive rate of telemetering packet greatly increases, and the efficiency of telemetering compression is effectively raised, to realize telemetry
Lossless telemetering compression, and by error code diffusion control within 2 bytes, the telemetering for microsatellite low bandwidth link provides branch
It holds.
Optionally, which is also used to: reading in the buffer area corresponding with each new downlink telemetry parameter packet
Downlink telemetry parameter packet has been cached, and the new downlink telemetry parameter packet and the downlink telemetry parameter packet that cached have been carried out
Compare；If compare the new downlink telemetry parameter packet with described to have cached downlink telemetry parameter packet identical, it is determined that no
The new downlink telemetry parameter packet is executed and passes operation down, and the first mark of first identifier position setting in virtual parameter packet
Know；If compare the new downlink telemetry parameter packet from described to have cached downlink telemetry parameter packet different, it is determined that institute
It states new downlink telemetry parameter packet and executes biography operation down, and second identifier is arranged in the first identifier position in virtual parameter packet.
Optionally, which is also used to: operation is passed in the case where determining to execute the new downlink telemetry parameter packet, and
It is distant to the virtual parameter packet and the new downlink after second identifier is arranged in the first identifier position in virtual parameter packet
It surveys parameter packet and executes biography operation down.
Optionally, which is also used to: in the case where executing the virtual parameter packet and the new downlink telemetry parameter packet
After passing operation, the downlink telemetry parameter packet that cached is replaced with into the new downlink telemetry parameter packet.
Optionally, subpackage processing unit 40 includes: acquisition module, for obtaining default subpackage rule；Wherein, described default
It include: default subpackage number in subpackage rule；Subpackage processing module is used for according to the default subpackage rule to the third telemetering
Data group carries out subpackage and handles to obtain multiple downlink telemetry parameter packets.
Optionally, subpackage processing module is used for: obtaining the default subpackage number in the default subpackage rule；Based on described pre-
If total amount of byte shared by each telemetry parameter, determines the average word of each subpackage in subpackage number and the third telemetry group
Joint number；Subpackage is carried out to the third telemetry group based on the average byte number to handle to obtain multiple downlink class telemetry parameters
Packet.
Optionally, it deletes and computing unit 20 is used for: being calculated in the first telemetry group using formula α=c/sum
The hop rate of each telemetry, wherein α is hop rate, and c is the transition times of each telemetry in the first telemetry group, sum
For the total quantity of telemetry in the first telemetry group.
Optionally, the type of the original telemetry parameter is a variety of, every kind of corresponding one group of target of original telemetry parameter
Telemetry；It deletes and computing unit 20 is also used to: in the target telemetry corresponding to every kind of original telemetry parameter
Delete the data that type is floating point type.
The technical effect and preceding method embodiment phase of device provided by the embodiment of the present invention, realization principle and generation
Together, to briefly describe, Installation practice part does not refer to place, can refer to corresponding contents in preceding method embodiment.
Referring to Fig. 5, the embodiment of the present invention also provides a kind of electronic equipment 100, comprising: processor 50, memory 51, bus
52 and communication interface 53, the processor 50, communication interface 53 and memory 51 are connected by bus 52；Processor 50 is used for
Execute the executable module stored in memory 51, such as computer program.
Wherein, memory 51 may include high-speed random access memory (RAM, Random Access Memory),
It may further include non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.By extremely
A few communication interface 53 (can be wired or wireless) is realized logical between the system network element and at least one other network element
Letter connection, can be used internet, wide area network, local network, Metropolitan Area Network (MAN) etc..
Bus 52 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data
Bus, control bus etc..Only to be indicated with a four-headed arrow convenient for indicating, in Fig. 5, it is not intended that an only bus or
A type of bus.
Wherein, memory 51 is for storing program, and the processor 50 executes the journey after receiving and executing instruction
Sequence, method performed by the device that the stream process that aforementioned any embodiment of the embodiment of the present invention discloses defines can be applied to handle
In device 50, or realized by processor 50.
Processor 50 may be a kind of IC chip, the processing capacity with signal.During realization, above-mentioned side
Each step of method can be completed by the integrated logic circuit of the hardware in processor 50 or the instruction of software form.Above-mentioned
Processor 50 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network
Processor (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (Digital Signal
Processing, abbreviation DSP), specific integrated circuit (Application Specific Integrated Circuit, referred to as
ASIC), ready-made programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or other are programmable
Logical device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute in the embodiment of the present invention
Disclosed each method, step and logic diagram.General processor can be microprocessor or the processor is also possible to appoint
What conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware decoding processing
Device executes completion, or in decoding processor hardware and software module combination execute completion.Software module can be located at
Machine memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. are originally
In the storage medium of field maturation.The storage medium is located at memory 51, and processor 50 reads the information in memory 51, in conjunction with
Its hardware completes the step of above method.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, in another example, multiple units or components can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be through some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in the executable non-volatile computer-readable storage medium of a processor.Based on this understanding, of the invention
Technical solution substantially the part of the part that contributes to existing technology or the technical solution can be with software in other words
The form of product embodies, which is stored in a storage medium, including some instructions use so that
One computer equipment (can be personal computer, server or the network equipment etc.) executes each embodiment institute of the present invention
State all or part of the steps of method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can be with
Store the medium of program code.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of telemetry compression transmitting method characterized by comprising
Obtain the target telemetry of satellite acquisition when carrying out simulated flight based on original telemetry parameter；
The data that type is floating point type are deleted in the target telemetry group, obtain the first telemetry group；And it calculates
The hop rate of each telemetry in the first telemetry group；
Each telemetry in the first telemetry group is ranked up based on the hop rate, obtains the second telemetry
Group；And reject the telemetry that the second telemetry group hopping rate is greater than default hop rate, obtain third telemetry
Group；
Subpackage is carried out to the third telemetry group to handle to obtain multiple downlink telemetry parameter packets；
The initial parameter packet of satellite is obtained, and the initial parameter packet is mapped in the multiple downlink telemetry parameter packet, is obtained
To multiple new downlink telemetry parameter packets.
2. the method according to claim 1, wherein the method also includes:
In buffer area, reading is corresponding with each new downlink telemetry parameter packet has cached downlink telemetry parameter packet, and will be described
New downlink telemetry parameter packet is compared with the downlink telemetry parameter packet that cached；
If compare the new downlink telemetry parameter packet with described to have cached downlink telemetry parameter packet identical, it is determined that it is not right
The new downlink telemetry parameter packet, which executes, passes down operation, and first identifier is arranged in the first identifier position in virtual parameter packet；
If compare the new downlink telemetry parameter packet from described to have cached downlink telemetry parameter packet different, it is determined that institute
It states new downlink telemetry parameter packet and executes biography operation down, and second identifier is arranged in the first identifier position in virtual parameter packet.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
Operation is passed in the case where determining to execute the new downlink telemetry parameter packet, and is marked by first in virtual parameter packet
After knowing position setting second identifier, the virtual parameter packet and the new downlink telemetry parameter packet are executed and pass operation down.
4. according to the method described in claim 3, it is characterized in that, the method also includes:
After passing operation under executing the virtual parameter packet and the new downlink telemetry parameter packet, cached down described
Row telemetry parameter packet replaces with the new downlink telemetry parameter packet.
5. handling to obtain the method according to claim 1, wherein carrying out subpackage to the third telemetry group
Multiple downlink telemetry parameter packets include:
Obtain default subpackage rule；It wherein, include: default subpackage number in the default subpackage rule；
Subpackage is carried out to the third telemetry group according to the default subpackage rule to handle to obtain multiple downlink telemetry parameters
Packet.
6. according to the method described in claim 5, it is characterized in that, according to the default subpackage rule to the third telemetering number
According to group carry out a subpackage handle to obtain multiple downlink telemetry parameter packets include:
Obtain the default subpackage number in the default subpackage rule；
Based on total amount of byte shared by each telemetry parameter in the default subpackage number and the third telemetry group, determine each
The average byte number of a subpackage；
Subpackage is carried out to the third telemetry group based on the average byte number to handle to obtain multiple downlink class telemetry parameters
Packet.
7. the method according to claim 1, wherein calculating each telemetry in the first telemetry group
Hop rate includes:
The hop rate of each telemetry in the first telemetry group is calculated using formula α=c/sum, wherein α is jump
Rate, c are the transition times of each telemetry in the first telemetry group, and sum is telemetry in the first telemetry group
Total quantity.
8. the method according to claim 1, wherein the type of the original telemetry parameter is a variety of, every kind of institute
State the corresponding one group of target telemetry of original telemetry parameter；
The data that type is floating point type are deleted in the target telemetry group includes:
The data that type is floating point type are deleted in the target telemetry corresponding to every kind of original telemetry parameter.
9. a kind of telemetry compression transmission device characterized by comprising
Acquiring unit, for obtaining the target telemetry of satellite acquisition when carrying out simulated flight based on original telemetry parameter；
It deletes and computing unit for deleting the data that type is floating point type in the target telemetry group obtains the
One telemetry group；And calculate the hop rate of each telemetry in the first telemetry group；
Sequencing unit is obtained for being ranked up based on the hop rate to each telemetry in the first telemetry group
Second telemetry group；And reject the telemetry that the second telemetry group hopping rate is greater than default hop rate, it obtains
Third telemetry group；
Subpackage processing unit handles to obtain multiple downlink telemetry parameter packets for carrying out subpackage to the third telemetry group；
Determination unit, for obtaining the initial parameter packet of satellite, and it is distant that the initial parameter packet is mapped to the multiple downlink
It surveys in parameter packet, obtains multiple new downlink telemetry parameter packets.
10. a kind of computer-readable medium for the non-volatile program code that can be performed with analyzer, which is characterized in that described
The step of program code makes the analyzer execute method described in any one of the claims 1 to 8.
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