CN106874962A - The fusion method and device of multi-source satellite data - Google Patents
The fusion method and device of multi-source satellite data Download PDFInfo
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- CN106874962A CN106874962A CN201710146872.2A CN201710146872A CN106874962A CN 106874962 A CN106874962 A CN 106874962A CN 201710146872 A CN201710146872 A CN 201710146872A CN 106874962 A CN106874962 A CN 106874962A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/25—Fusion techniques
- G06F18/251—Fusion techniques of input or preprocessed data
Abstract
The invention discloses a kind of multi-source satellite data fusion method and device, including：It is provided for depositing the caching chained list of data, the satellite data received by multiple receiving devices is continuously acquired respectively, and satellite data is stored in caching chained list as data cached at least a portion；Byte length similarity according to each first satellite data formerly received by a receiving device in multiple receiving devices and by another receiving device in multiple receiving devices between each second satellite data of rear reception, determines the satellite data being mutually matched between each first satellite data and each second satellite data as fused data.The fusion method and device of multi-source satellite data of the invention, can solve to merge the multi-source satellite data for receiving while shortage of data when receiving satellite data is reduced, and prevent the satellite data of output from the problem of substantial amounts of redundant data occur.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of multi-source satellite data fusion method and device.
Background technology
In the Big Dipper receives data set, the form for often being coordinated using commander's machine and network special line receives satellite data.Its
In, commander's machine equipment receives satellite data by airlink；Network special line is then connected to satellite master station, using UDP message bag
Form receive satellite data.
Because commander's machine equipment is susceptible to the influence of surrounding environment, such as block, wireless signal interference, therefore, lose number
According to situation than more serious.In addition, UDP networks there is also the situation of loss.It can be seen that, any data insertion equipment or system
All exist loss of data, it is imperfect situations such as, so as to cannot accomplish that 100% data are complete, so often using multi-source mode (i.e.
Multiple receiving devices receive the mode of data simultaneously) realize the Big Dipper data, services of reliable stabilization to receive satellite data.
Although receiving data by multi-source mode can greatly improve the reliability of system, because data source is more
The reason for source, while also bringing the phenomenon of Data duplication, so as to produce substantial amounts of redundant data, brought much not to system
The erroneous judgement of certainty and many jammers.
For in the prior art because using multi-source mode to receive the Data duplication problem of Big Dipper data, it is desirable to provide Yi Zhongke
Data fusion is carried out with to multi-source data, so as to export the method and device of unique, healthy and strong Big Dipper data.
The content of the invention
To solve the above problems, the present invention provides the fusion method and device of a kind of multi-source satellite data, to the multi-source Big Dipper
Data are collected and fusion treatment, so as to avoid the occurrence of the problem of Data duplication.
To achieve the above object, a kind of fusion method of multi-source satellite data of the invention, comprises the following steps：
S1, the caching chained list for being provided for depositing data, continuously acquire the satellite number received by multiple receiving devices respectively
According to, and satellite data is stored in caching chained list as data cached at least a portion, satellite data at least includes by many
The first satellite data that a receiving device in individual receiving device is formerly received connects with by another in multiple receiving devices
Second satellite data of the receiving unit in rear reception；
S2, according to the byte length similarity between each first satellite data and each second satellite data, determine each first
The satellite data being mutually matched between satellite data and each second satellite data is used as fused data.
Further also include：
Matching latent period is set, according to the respective reception of the first satellite data and the second satellite data being mutually matched
Whether time interval determines fused data for fused data in the cycle or number is merged outside the cycle in the range of matching latent period
According to；
The redundant data of fused data in the cycle is deleted in chained list is cached.
Further, also include, the initial value of matching latent period is set, and according to the reception time interval of fused data
Carry out dynamic and update matching latent period.
Further, it is determined that the fused data reception time interval as the sample information in sample table, according to
Current sample information in sample table updates matching latent period.
Further, matching latent period is mathematical expectation and the standard side of the current whole sample informations in sample table
Difference sum.
Further, also include, maximum latent period is set, storage time in caching chained list is more than maximum latent period
Satellite data delete.
Further, also include, will determine as unmatched satellite data, cycle outer fused data and fusion number in the cycle
According to exporting data as a result together.
A kind of fusing device of multi-source satellite data of the invention, it is characterised in that including：
Data buffer storage unit, is configured to deposit the satellite data received by multiple receiving devices for continuously acquiring respectively
Used as data cached at least a portion, satellite data at least includes first by a receiving device in multiple receiving devices for storage
Receive the first satellite data with by another receiving device in multiple receiving devices rear reception the second satellite data；
Data fusion unit, is configured to according to each first satellite data in data buffer storage unit and each second satellite data
Between byte length similarity, determine the satellite data being mutually matched between each first satellite data and each second satellite data
As fused data.
Further, data fusion unit includes：
Matching module, is configured to the satellite number for determining to be mutually matched between each first satellite data and each second satellite data
According to；
Fused data determining module, is configured to set matching latent period, and according to being mutually matched that matching module determines
The first satellite data and the second satellite data respective reception time interval whether in matching in the range of latent period, really
It is fused data in the cycle or cycle outer fused data to determine fused data；
Redundant data cleaning modul, is configured to delete the redundant data of fused data in the cycle in data buffer storage unit
Remove.
Further, fused data determining module is further configured to the reception time interval according to fused data come dynamic
Update matching latent period.
Further, data buffer storage unit is configured to the satellite data more than predetermined maximum latent period by storage time
Delete.
Further, also including data outputting unit, be configured to by matching unit be defined as unmatched satellite data with
And the cycle outer fused data that determines of fused data determining module and fused data exports data as a result together in the cycle.
The fusion method and device of multi-source satellite data of the invention, satellite data is received using by multiple receiving devices
Mode, reduces shortage of data when receiving satellite data；After satellite data is obtained, formerly received according to by a receiving device
Each first satellite data it is similar to the byte length by another receiving device between each second satellite data of rear reception
Degree, judges the matching degree of each first satellite data and each second satellite data, and by each first satellite data and each second
The satellite data being mutually matched between satellite data used as fused data, melted by the multi-source satellite data for receiving that achieves a butt joint
Close, so as to the phenomenon of substantial amounts of redundant data occurs in the satellite data for preventing output.
Brief description of the drawings
Fig. 1 is the flow chart of the fusion method of multi-source satellite data of the invention；
Fig. 2 is a kind of schematic flow sheet of embodiment of the fusion method of multi-source satellite data of the invention；
Fig. 3 is the operation result schematic diagram of embodiment illustrated in fig. 2；
Fig. 4 is the schematic block diagram of the fusing device of multi-source satellite data of the invention.
Specific embodiment
Below, with reference to accompanying drawing, structure of the invention and operation principle etc. are further described.
As shown in figure 1, a kind of fusion method of multi-source satellite data of the invention, comprises the following steps：
S1, the caching chained list for being provided for depositing data, continuously acquire the satellite number received by multiple receiving devices respectively
According to, and satellite data is stored in caching chained list as data cached at least a portion, satellite data at least includes by many
The first satellite data that a receiving device in individual receiving device is formerly received connects with by another in multiple receiving devices
Second satellite data of the receiving unit in rear reception.
Wherein, caching chained list in addition to for temporarily depositing pending satellite data, or data processing container.
After a satellite data is reached, corresponding data processing can be carried out to it in caching chained list, and according to result
Removed in caching chained list or increase corresponding satellite data.Satellite data is being purged or is increasing to caching chained list
During operation, while data cached being updated to satellite data composition, it is ensured that caching chained list and data cached big I
With the result dynamic change according to data processing, such that it is able to reducing the load pressure of system, improving running efficiency of system.
In embodiments of the present invention, satellite data at least includes formerly being connect by a receiving device in multiple receiving devices
Receive the first satellite data with by another receiving device in multiple receiving devices rear reception the second satellite data.At this
Invent in another embodiment, satellite data can also be including the data content for receiving time and source etc. of satellite data.Defend
The reception time of sing data, it is used to calculate reception time interval and the satellite between the satellite data and other satellite datas
Storage time of the data storage in chained list is cached；The source of satellite data, is used to judge the satellite data and other satellite numbers
It is same source data or different source data between, same source data is the satellite data and other satellite datas are by same reception
The satellite data that equipment is obtained, different source data is that the satellite data is by defending that different receiving devices are obtained from other satellite datas
Sing data.
S2, according to the byte length similarity between each first satellite data and each second satellite data, determine each first
The satellite data being mutually matched between satellite data and each second satellite data is used as fused data.
Because same source data is the satellite data that is temporally continuously acquired by same receiving device, therefore it is not in number
According to the phenomenon for repeating, and different source data is the satellite data synchronously continuously acquired by multiple different receiving devices, is only possible to
There is the inconsistent situation of indivisible data, now, the different source data of acquisition is the phenomenon that substantial amounts of Data duplication occurs.
Therefore it may only be necessary to whether be mutually matched between judging different source data, you can judge whether to have received the data of repetition.
In embodiments of the present invention, it is right to be carried out by the byte length to the first satellite data and the second satellite data
Than analysis, the byte length similarity Sim according to satellite data judge between the first satellite data and the second satellite data whether
Be mutually matched, so as to identify whether receive received before the second satellite data of rear reception similarity it is very high
The first satellite data for first receiving, and as fused data.
Specifically, first, regard the first satellite data and the second satellite data as two vectors respectively to be processed, by
Each byte in one satellite data and the second satellite data regards a dimension in corresponding vector as respectively.Then, then
The distance between first satellite data and the corresponding vector of the second satellite data d are calculated by Euclidean distance.
Byte length similarity Sim and the computing formula apart from d are：
Wherein, VCi、VNjThe first satellite data, the second satellite data are represented respectively.
Due to the first satellite data VCi, the second satellite data VNjThe inconsistent situation of byte length is likely to occur, therefore,
The contrast of byte length is carried out by the way of head alignment, will the first satellite data VCi, the second satellite data VNjThe first word
Section alignment, then the byte length again to two satellite datas is compared.
Now, it may appear that the first satellite data VCiByte length be more than the second satellite data VNj(being shown in Table 1), first are defended
Sing data VCiByte length be less than the second satellite data VNj(being shown in Table 2), the first satellite data VCiByte length be equal to the
Two satellite data VNjThree kinds of situations (being shown in Table 3).As the first satellite data VCi, the second satellite data VNjByte length differ
During cause, average value 128 is typically taken as dummy bytes difference.
The VC of table 1iWith VNjByte comparing result table (1)
The VC of table 2iWith VNjByte comparing result table (2)
The VC of table 3iWith VNjByte comparing result table (3)
Can be learnt from above-mentioned analysis, d (VCi,VNj)∈[0,∞)；Sim(VCi,VNj)∈(0,1].When apart from d (VCi,
VNj) it is bigger when, byte length similarity Sim (VCi,VNj) smaller, now the first satellite data VCi, the second satellite data VNj's
Difference is bigger.As Sim (VCi,VNjDuring)=1, the first satellite data VC is representedi, the second satellite data VNjByte length it is complete
It is complete consistent.
In embodiments of the present invention, as byte length similarity Sim (VCi,VNj) more than or equal to 99.5% when, you can really
It is fixed to be mutually matched between first satellite data and the second satellite data, and the first satellite data that will be mutually matched and the second satellite
Data are used as fused data.
In an alternative embodiment of the invention, also including setting matching latent period, according to the first satellite number being mutually matched
According to the respective reception time interval with the second satellite data whether in matching in the range of latent period, determine that fused data is
Fused data or cycle outer fused data in cycle；The redundant data of fused data in the cycle is deleted in chained list is cached.
For convenience of subsequent descriptions, matching latent period can be expressed as Twait。
The reason for setting dynamically matches latent period is, because receiving device may be interfered, it is understood that there may be receive
The equipment factors of instability, the satellite data arrival time that can at this time cause different receiving devices to receive may be inconsistent.
Further, since different receiving devices are different according to current load, data arrival time can also change.Different receptions are caused to set
The standby reception time for receiving satellite data that is possible identical or being mutually matched may be inconsistent.Therefore, it can set matching
Latent period, then when fused data is judged, whether the reception time interval according to fused data is in matching latent period
It is interior, it is determined whether to delete the redundant data of the fused data, so as to realize the fusion of data.
But, if setting the matching latent period of fixation in data anastomosing algorithm, in the case where change is loaded, meeting
Substantial amounts of data are caused to judge by accident so that fusion failure.Need to set dynamic matching latent period for this, make matching latent period
As the current ruuning situation of system and processing condition data are dynamically adjusted.At this point it is possible to first set the first of matching latent period
Initial value, and according to fused data, that is, the first satellite data for having matched carrys out dynamic with the reception time interval of the second satellite data
Update matching latent period so that the matching latent period in the present invention with the carrying out of data processing dynamic change.
In embodiments of the present invention, the renewal to the matching latent period includes：Sample table is set, predetermined quantity is obtained
The reception time interval of the fused data of individual newest determination is used as the sample information in sample table, the current sample in sample table
This information updating matches latent period.Wherein, matching latent period can be, for example, the current whole sample informations in sample table
Mathematical expectation and standard deviation square value sum.In the embodiment of the present invention, in sample table the quantity of sample information can be more than or
Equal to 10.
As shown in table 4, as a example by when the quantity of sample information is 10, at this point it is possible in the minimum number of sample information
When, relatively reliable matching latent period is obtained, so as to reduce the workload of operation of system.When sample chained list is full, will
The sample information being stored at first in sample table is taken out, and is put into the sample information of newest acquisition.First sample that will be in table 4
This information is removed, and other sample informations move forward one successively, and new sample information is put into last position.And removed sample letter
Breath is not output as merging successful data, because the sample information had been recorded once before sample table is entered.
The acquisition time interval sample table of two satellite datas that table 4 is mutually matched
When system and device starts first, now sample table is sky, acquiescence matching latent period TwaitEqual to set
Initial value, then collection is mutually matched reception time of the first satellite data and the second satellite data as sample information, successively
It is put into sample table and is calculated.
Wherein, the computing formula of reception time interval (unit second) is：T=| TCi-TNj|。
Due to receiving time interval for discrete sample data, therefore its mathematic expectaion isIts variance
ForIts standard variance is
After sample information according to respective amount in the sample of current time calculates E (T) and σ, calculate new matching and wait
Cycle：Twait=E (T)+σ.
Knowable to above-mentioned calculating process, due to matching latent period TwaitComprising mathematic expectaion E (T) and standard variance σ, because
This, matching latent period TwaitCan change with the change of load, so as to reflect the situation of system present load change.
But, not the redundant data of whole fused datas is deleted, only when the reception time interval of fused data
When in the range of matching latent period, it is confirmed as in the cycle in the case of fused data, just will merges number in the cycle
According to redundant data delete.And for receiving the cycle outer fused data that time interval is in outside matching latent period scope, protect
Stay its redundant data.In one embodiment of the invention, redundant data can be formerly to obtain in the satellite data being matched
Satellite data.
In embodiments of the present invention, it is similar when first satellite data and byte length for the second satellite data
When degree is more than 99.5%, just it is believed that be mutually matched between first satellite data and second satellite data, i.e., now this
One satellite data and second satellite data are confirmed as fused data.
In an alternative embodiment of the invention, also include, maximum latent period is set, storage time in caching chained list is more than
The satellite data of maximum latent period is deleted.When getting new satellite data per subsystem, can all judge to have been stored in
Whether the storage time of chained list centre halfback's sing data is cached more than maximum latent period, if greater than maximum latent period, then slow
Deposit and delete this satellite data in chained list, it is new data cached so as to obtain.
Because the load of system and operational capability are limited, excessive satellite data deposit in caching chained list in when, can cause
The workload increase of storage and computing, also, satellite data too early between the docking time receiving carries out follow-up data treatment, and it is to data
Result is nonsensical, can only increase the operation burden of system.Therefore, maximum latent period is set, in chained list is cached only
Satellite data of the storage time in maximum latent period is preserved and processed, load and the operation of system can be not only reduced
Amount, also improves the efficiency of system, so as to improve the efficiency of fusion and the accuracy of fusion results.
In embodiments of the present invention, maximum latent period can be the fixed value that operator is set, for convenience of subsequent descriptions,
Maximum latent period can represent T_MAX.
In an alternative embodiment of the invention, can also will determine as unmatched satellite data, cycle outer fused data and
Fused data exports data as a result together in cycle.In addition to this it is possible to as needed, each reception device be received
Data bulk, each reception device receive the retained cycle in fused data quantity, each reception device receive nonredundancy
The cycle of data outer fused data quantity and unmatched satellite data, cycle outer fused data and fused data in the cycle
Quantity together as result data export.
As shown in Fig. 2 being one embodiment of the fusion method of multi-source satellite data of the invention.In this embodiment,
Receiving device is 2, respectively commands machine and network special line, in other embodiments, the quantity of receiving device can with more,
But fusion method and principle are identical with the present embodiment.It is initial value, the sample letter for matching latent period to set maximum latent period
Breath quantity is 10, and is set when similarity is more than 99.9%, determines that the first satellite data is matched with the second satellite data.
Whether the concrete operation process of the present embodiment is, when satellite data is received, first to judge there is caching in caching chained list
, when caching chained list is space-time, directly be stored in the satellite data in caching chained list by data, is not space-time when caching in chained list,
Whether the storage time for caching each satellite data stored in chained list is first judged successively more than maximum latent period, and deletes storage
Time is more than the satellite data of maximum latent period；Then judge the source of remaining satellite data in caching chained list, sentence successively
The disconnected satellite data received by the receiving device different from the satellite data that this receives whether the satellite received with this
It is mutually matched between data, if matching, using two satellite datas as fused data；Finally, the reception of decision fusion data
Whether time interval deletes the redundant data of fused data in the cycle in the range of matching latent period, and will be newest
The reception time interval of whole fused datas is put into sample table, updates matching latent period.
According to above-described embodiment, operation result as shown in Figure 3 can be obtained.After system operation 233 seconds, can be by number
It is as shown in table 5 according to collecting：
The results of running data summary table of table 5
It is most of by upper table it is known that the data that the relative commander's machine of data that network special line is obtained is obtained reach fast
Go to merge the data that matching network special line is obtained all referring to the data for waving machine acquisition, fusion have matched 1400.Matching waits week
The data merged outside phase have reacted the dynamic change situation of system, and the data merged outside matching latent period only account for whole fusions
The 2.6% of data, and other 97.4% data can be merged in matching latent period.
While it can also be seen that, all there is the situation of loss of data by any one receiving device, using multi-source of the invention
The fusion method of satellite data the satellite data that many source devices are received is carried out combing, collect, unified output after fusion treatment
Effect data far better than single source device, so as to improve the reliability of system, the shortcomings of compensate for single source data and lose.
As shown in figure 4, a kind of fusing device of multi-source satellite data of the invention, including data buffer storage unit and data are melted
Close unit, data buffer storage unit is used to obtaining and be stored with the satellite data that multiple receiving devices are received, data fusion unit pair
The satellite data that received in data buffer storage unit carries out data processing.
Wherein, data buffer storage unit, is configured to the satellite data received by multiple receiving devices to continuously acquiring respectively
Stored as data cached at least a portion, satellite data at least includes being set by a reception in multiple receiving devices
Standby the first satellite data for formerly receiving with by another receiving device in multiple receiving devices rear reception the second satellite
Data.The data cached data that can be purged according to follow-up data processing or increase satellite data update, it is ensured that slow
The size of deposit data can be according to the result dynamic change of data processing, such that it is able to reducing the load pressure of system, improving system
System operational efficiency.
In embodiments of the present invention, the reception time of satellite data is at least included as data cached satellite data and is come
The data content in source etc..The reception time of satellite data, it is used to calculate the reception between the satellite data and other satellite datas
Time interval and the satellite data are stored in the storage time in caching chained list；The source of satellite data, is used to judge that this is defended
It is same source data or different source data between sing data and other satellite datas.
In embodiments of the present invention, because the load of system and operational capability are limited, excessive satellite data is deposited in slow
When depositing in chained list, the workload of storage and computing can be caused to increase, also, satellite data too early between the docking time receiving is carried out subsequently
Data processing, it is nonsensical to data processed result, can only increase the operation burden of system.Therefore, maximum wait week is set
Phase, data buffer storage unit is configured to delete storage time more than the satellite data of predetermined maximum latent period, is to reduce
The load of system simultaneously improves the efficiency of data processing.
Data fusion unit, is configured to according to each first satellite data in data buffer storage unit and each second satellite data
Between byte length similarity, determine the satellite data being mutually matched between each first satellite data and each second satellite data
As fused data.
In embodiments of the present invention, as byte length similarity Sim (VCi,VNj) more than or equal to 99.5% when, you can really
It is fixed to be mutually matched between first satellite data and the second satellite data, and the first satellite data that will be mutually matched and the second satellite
Data are used as fused data.
In embodiments of the present invention, data fusion unit includes matching module, fused data determining module and redundant data
Cleaning modul.
Specifically, matching module, is configured to determine to be mutually matched between each first satellite data and each second satellite data
Satellite data.Fused data determining module, is configured to set matching latent period, and mutual determined according to matching module
The first satellite data matched somebody with somebody is matched in the range of latent period with whether the respective reception time interval of the second satellite data is in,
Determine that fused data is fused data in the cycle or cycle outer fused data.Redundant data cleaning modul, is configured to delay data
The redundant data of fused data is deleted in cycle in memory cell.
In another embodiment, fused data determining module is further configured to the reception according to fused data
Time interval carrys out dynamic and updates matching latent period.At this point it is possible to the initial value of matching latent period is first set, and according to fusion
Data, that is, the first satellite data for having matched carrys out dynamic renewal and matches wait week with the reception time interval of the second satellite data
Phase, so that the matching latent period in the present invention can carry out dynamic change with the result of data processing.
In another embodiment, also including data outputting unit, it is configured to not be defined as matching unit not
Cycle outer fused data and fused data is exported together in the cycle that the satellite data and fused data determining module matched somebody with somebody determine
Data as a result.In addition to this it is possible to as needed, data bulk, each reception device that each reception device is received
The cycle of the Non-redundant data that fused data quantity, each reception device are received outer fused data number in the retained cycle for receiving
Amount and unmatched satellite data, cycle outer fused data and in the cycle fused data quantity together as result data
Output, to facilitate operating personnel to judge for the effect of Data Fusion.
More than, schematic description only of the invention, it will be recognized by those skilled in the art that without departing from work of the invention
Make on the basis of principle, various improvement can be made to the present invention, this belongs to protection scope of the present invention.
Claims (12)
1. a kind of fusion method of multi-source satellite data, it is characterised in that comprise the following steps：
S1, the caching chained list for being provided for depositing data, continuously acquire the satellite data received by multiple receiving devices respectively, and
The satellite data is stored in the caching chained list and is at least wrapped as data cached at least a portion, the satellite data
The first satellite data formerly received by a receiving device in the multiple receiving device is included to be set with by the multiple reception
The second satellite data of another receiving device in standby in rear reception；
S2, according to the byte length similarity between each first satellite data and each second satellite data, determine each first satellite
The satellite data being mutually matched between data and each second satellite data is used as fused data.
2. the fusion method of multi-source satellite data as claimed in claim 1, it is characterised in that also include：
Matching latent period is set, according to the respective reception of first satellite data and the second satellite data being mutually matched
Whether time interval determines that the fused data is fused data or cycle in the cycle in the range of the matching latent period
Outer fused data；
The redundant data of fused data in the cycle is deleted in the caching chained list.
3. the fusion method of the multi-source satellite data as described in right wants 2, it is characterised in that also include, sets described matching etc.
The initial value in cycle is treated, and the matching latent period is updated come dynamic according to the reception time interval of the fused data.
4. the fusion method of multi-source satellite data as claimed in claim 3, it is characterised in that to the matching latent period
Renewal includes：Sample table is set, and the reception time interval for obtaining the fused data of the newest determination of predetermined quantity is made
It is the sample information in the sample table, the current sample information in the sample table updates the matching latent period.
5. the fusion method of multi-source satellite data as claimed in claim 4, it is characterised in that the matching latent period is institute
State the mathematical expectation and standard deviation square value sum of current whole sample informations in sample table.
6. the fusion method of the multi-source satellite data as any one of claim 1-5, it is characterised in that also include, if
Maximum latent period is put, storage time in the caching chained list is deleted more than the satellite data of the maximum latent period.
7. the fusion method of the multi-source satellite data as any one of claim 2-5, it is characterised in that also include, will
It is defined as unmatched satellite data, the cycle outer fused data and fused data exports count as a result together in the cycle
According to.
8. a kind of fusing device of multi-source satellite data, it is characterised in that including：
Data buffer storage unit, is configured to carry out storage work to the satellite data received by multiple receiving devices for continuously acquiring respectively
It is data cached at least a portion, the satellite data at least includes by a receiving device in the multiple receiving device
The first satellite data for formerly receiving is defended with by another receiving device in the multiple receiving device the second of rear reception
Sing data；
Data fusion unit, is configured to according to each first satellite data in the data buffer storage unit and each second satellite data
Between byte length similarity, determine the satellite data being mutually matched between each first satellite data and each second satellite data
As fused data.
9. the fusing device of the multi-source satellite data as described in right wants 8, it is characterised in that the data fusion unit includes：
Matching module, is configured to the satellite data for determining to be mutually matched between each first satellite data and each second satellite data；
Fused data determining module, is configured to set matching latent period, and the institute being mutually matched determined according to matching module
Whether the respective reception time interval for stating the first satellite data and the second satellite data matches latent period scope in described
It is interior, determine that the fused data is fused data in the cycle or cycle outer fused data；
Redundant data cleaning modul, is configured to the redundant data of fused data in the cycle in the data buffer storage unit
Delete.
10. the fusing device of multi-source satellite data as claimed in claim 9, it is characterised in that the fused data determines mould
Block is further configured to update the matching latent period come dynamic according to the reception time interval of the fused data.
The fusing device of the 11. multi-source satellite data as any one of right wants 8-10, it is characterised in that the data are delayed
Memory cell is configured to delete storage time more than the satellite data of predetermined maximum latent period.
The fusing device of the 12. multi-source satellite data as described in right wants 9 or 10, it is characterised in that also including data output list
Unit, is configured to for the matching unit to be defined as the institute that unmatched satellite data and the fused data determining module determine
State cycle outer fused data and fused data exports data as a result together in the cycle.
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