CN104967561B - The data delivery device and distribution method of remote sensing satellite base band data - Google Patents
The data delivery device and distribution method of remote sensing satellite base band data Download PDFInfo
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Abstract
The present invention provides a kind of data delivery device and distribution method of remote sensing satellite base band data, data delivery device therein, based on C/S frameworks, it asks and responds thereto as all data distributions of server end monitoring when carrying out Data distributing, wherein, all data include the remote sensing satellite base band data obtained by digital demodulator and remote sensing satellite base band data timecode information, data delivery device include：Data distribution request receiving module, for receiving the data distribution sent from user equipment request；Data distribution module, for after receiving data distribution request, the satellite baseband data of distribution will be asked to be distributed to user equipment.Using the present invention, can by network, end equipment provides unified remote sensing satellite base band data and distributes service backward, to break away from the limitation of ECL signal transmission distances.
Description
Technical field
The present invention relates to the acquisitions of remote sensing satellite base band data to be more specifically related to a kind of remote sensing with distribution technology field
The data delivery device and distribution method of satellite baseband data.
The present invention is the divisional application of the application for a patent for invention application No. is 201210301120.6, and the applying date of female case is
On 08 22nd, 2012.
Background technology
The reception of remote sensing satellite data and record are the first links of remote sensing satellite Data acquisition and Proclssing process.Remote sensing is defended
Star digital baseband signal generally includes data-signal and clock signal.Traditionally, remote sensing satellite digital baseband signal is adopted
The input mode integrated is ECL signal, after which enters recording equipment, completes ECL using dedicated data collecting plate card and believes
Number serioparallel exchange, then base-band data signal is written in data storage device (for example, memory) by pci bus, to
Generate the binary system remote sensing satellite initial data that subsequent processing device needs.
However, above-mentioned ECL signal data acquisitions mode generally use analog demodulator, need exclusive data analog input card into
Row serial to parallel conversion, it is bad so as to cause versatility.Moreover, there is limitation to transmission range and picking rate in ECL aspects.
For example, the cable transmission distance that ECL signals utilize is not to be exceeded 15 meters, highest picking rate (code speed) is in 1Gbps or less.At this
In the case of kind, the layout of data acquisition equipment can be by very big limitation.
In addition, the distribution of current remote sensing satellite base band data carries out usually after receiving, it will be distant using FTP orders
Sense satellite baseband data file is sent to fixed ftp server, and a variety of processing equipments to be local and remote are same
When the distribution service of safe and effective Real-time Remote Sensing satellite baseband data is provided.
Invention content
In view of the above problems, the object of the present invention is to provide a kind of data delivery device of remote sensing satellite base band data and point
Forwarding method, by network, end equipment provides unified remote sensing satellite base band data distribution service backward, to solve ECL signal transmissions
The problem of limitation of distance.
The present invention provides a kind of data delivery device of remote sensing satellite base band data, is based on C/S frameworks, is carrying out data point
It when hair service, monitors all data distributions as server end and asks and respond thereto, wherein all data include
The remote sensing satellite base band data and remote sensing satellite base band data timecode information obtained by digital demodulator, wherein
When detecting data acquisition session list, by network from digital demodulator corresponding with data acquisition session list
Remote sensing satellite base band data protocol package is obtained, and is obtained after being parsed to acquired remote sensing satellite base band data protocol package distant
Feel satellite baseband data and remote sensing satellite base band data timecode information, the remote sensing satellite base band data protocol package is by total
Word demodulator is to obtaining after being handled from communication number under the satellite that remote sensing satellite corresponding with data acquisition session list receives；
Data delivery device includes：
Data distribution request receiving module, for receiving the data distribution sent from user equipment request, data distribution is asked
It asks including user equipment information and data application information, data application information includes applying type, application satellite name and application rail
Taoist monastic name and applying type include real-time Data Transmission and post-flight data transmission；And
Data distribution module, the data letter of application for after receiving data distribution request, being asked based on data distribution
Applying type, application satellite name in breath and application orbit number will be asked the satellite baseband data of distribution to be distributed to user and set
It is standby.
Furthermore it is preferred that scheme be that, when applying type is real-time Data Transmission, data distribution module includes：
Data acquisition session list determining module, for based on the application satellite name and application track in data application information
Number, data acquisition session list corresponding with data distribution request is determined from the data acquisition session list being carrying out；
Data obtaining module, for based on identified data acquisition session list, obtaining corresponding remote sensing satellite base band number
According to file and remote sensing satellite base band data timecode information；
Data start determining module, for based on acquired remote sensing satellite base band data timecode information, determining
The data start for the data that should be sent；
Data read module, for being read in real time from data from the remote sensing satellite base band data file of data storage device
The data that initial position starts；And
Read data are sent to the user equipment for sending out data distribution request, until data by the first sending module
Acquisition terminates.
Furthermore it is preferred that scheme be, applying type be post-flight data transmission when, data distribution module includes：
Satellite baseband data file determining module, for based on the application satellite name and application track in data application information
Number, determine remote sensing satellite base band data file corresponding with the data distribution request that user equipment is sent；And
Second sending module is sent to and sends out data distribution and ask for by identified remote sensing satellite base band data file
The user equipment asked.
Furthermore it is preferred that scheme be the data delivery device, be additionally operable to extract user information therein, and using using
Family safety certification device is to asking the identity of equipment to carry out safety certification；
If not authenticated, send the rejection comprising error message to the equipment and respond, if by certification, it will
According to the applying type in application information Data distributing is provided to the equipment.
The present invention also provides a kind of remote sensing satellite base band data distribution methods, are based on C/S frameworks, are carrying out data distribution clothes
It asks and responds thereto from all data distributions of server end monitoring when business, wherein all data include by complete
The remote sensing satellite base band data and remote sensing satellite base band data timecode information that digital demodulator obtains, wherein
When detecting data acquisition session list, by network from digital demodulator corresponding with data acquisition session list
Remote sensing satellite base band data protocol package is obtained, and is obtained after being parsed to acquired remote sensing satellite base band data protocol package distant
Feel satellite baseband data and remote sensing satellite base band data timecode information, the remote sensing satellite base band data protocol package is by total
Word demodulator to obtaining after being handled from communication number under the satellite that remote sensing satellite corresponding with data acquisition session list receives,
Method includes：
The data distribution request sent from user equipment is received, data distribution request includes user equipment information and data Shen
Please information, data application information include applying type, application satellite name and application orbit number and applying type include in real time number
According to transmission and post-flight data transmission；And
Receive data distribution request after, based on data distribution request data application information in include application class
Type, application satellite name and application orbit number, will ask the satellite baseband data of distribution to be distributed to user equipment.
Furthermore it is preferred that scheme be, when applying type is real-time Data Transmission,
According to the application satellite name and application orbit number in data application information, from the data acquisition session list being carrying out
Middle determination data acquisition session list corresponding with data distribution request；
According to identified data acquisition session list, corresponding remote sensing satellite base band data file and remote sensing satellite base are obtained
Band data time code information；
According to acquired remote sensing satellite base band data timecode information, it is determined that the data start bit of the data sent
It sets；
Read the number since data start in real time from the remote sensing satellite base band data file of data storage device
According to；And
Read data are sent to the user equipment for sending out data distribution request, until data acquisition terminates.
Furthermore it is preferred that scheme be, applying type be post-flight data transmission when, according to the application in data application information
Satellite name and application orbit number determine remote sensing satellite base band data text corresponding with the data distribution request that user equipment is sent
Part；And
By identified remote sensing satellite base band data file, it is sent to the user equipment for sending out data distribution request.
Furthermore it is preferred that scheme be after receiving user equipment information, to extract user information therein, and utilize user
Safety certification device is to asking the identity of equipment to carry out safety certification；If not authenticated, sent to the equipment comprising mistake
The rejection of false information responds, if by certification, will provide data point to the equipment according to the applying type in application information
Hair service.
From technical solution above it is found that the data delivery device of remote sensing satellite base band data provided by the invention and distribution
Method, can by network, end equipment provides unified Data distributing backward, to be deployed in a variety of places of local and remote
Reason equipment provides safe and effective real-time or subsequent remote sensing satellite base band data distribution service.
To the accomplishment of the foregoing and related purposes, one or more aspects of the present invention include be particularly described below and
The feature particularly pointed out in claim.Certain illustrative aspects of the invention is described in detail in the following description and the annexed drawings.
However, these aspects indicate only usable some of the various ways in the principles of the present invention.In addition, of the invention
It is intended to include all such aspects and their equivalent.
Description of the drawings
According to following detailed descriptions carried out with reference to attached drawing, above and other objects, features and advantages of the invention will become
It must become apparent from.In the accompanying drawings：
Fig. 1 shows that remote sensing satellite base band data acquisition according to the present invention and an exemplary job of dissemination system are shown
It is intended to；
Fig. 2 shows the sides of remote sensing satellite base band data according to the present invention acquisition and an exemplary configuration of dissemination system
Frame schematic diagram；
Fig. 3 shows an exemplary block diagram of the task management device in Fig. 2；
Fig. 4 shows an exemplary block diagram of the data acquisition device in Fig. 2；
Fig. 5 shows an example of the institutional framework of remote sensing satellite base band data file；
Fig. 6 shows an exemplary schematic diagram of the data structure of remote sensing satellite base band data timecode information file；
Fig. 7 shows an exemplary block diagram of the data delivery device in Fig. 2；
Fig. 8 shows the data distribution module when applying type is the transmission of Real-time Remote Sensing satellite baseband data in Fig. 7
An exemplary block diagram；
Fig. 9 shows the data distribution module when applying type is subsequent remote sensing satellite base band data transmission in Fig. 7
An exemplary block diagram；
Figure 10 shows the overview flow chart of the data acquisition of remote sensing satellite base band data according to the present invention；
Figure 11 shows an exemplary flow of the data acquisition of remote sensing satellite base band data according to the present invention
Figure；
Figure 12 shows the overview flow chart of the data dissemination process of remote sensing satellite base band data according to the present invention；With
Figure 13 shows an exemplary flow of the data dissemination process of remote sensing satellite base band data according to the present invention
Figure.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific implementation mode
Various aspects of the disclosure is described below.It is to be understood that teaching herein can have in the form of varied
Body embodies, and any concrete structure disclosed herein, function or both are only representative.Religion based on this paper
Lead, those skilled in the art it is to be understood that one aspect disclosed herein can be realized independently of any other aspect,
And two or more aspects in these aspects can combine in various manners.It is, for example, possible to use described in this paper
Any number of aspect, realization device or puts into practice method.Further, it is possible to use other structures, function or in addition to described here
One or more aspects except or be not one or more aspects described herein structure and function, realize this device
Or put into practice this method.In addition, any aspect described herein may include at least one element of claim.
According to an embodiment of the invention below in conjunction with description of the drawings.
Fig. 1 shows that remote sensing satellite base band data acquisition according to the present invention and an exemplary job of dissemination system are shown
It is intended to.
As shown in Figure 1, the acquisition of remote sensing satellite base band data is located in digital demodulator, multiple respectively with dissemination system
It manages equipment 1 and multiple strange land processing equipments 2 is connected.
When receiving the data acquisition session that user assigns, the acquisition of remote sensing satellite base band data is based on C/ with dissemination system
S frameworks are communicated using ICP/IP protocol with digital demodulator, and the collecting work of remote sensing satellite base band data is completed.?
During being communicated with digital demodulator, digital demodulator is as server end, and remote sensing satellite base band data is adopted
For collection with the data acquisition device in dissemination system as client, communication between the two is to be based on as defined in digital demodulator
The communication protocol packet of ICP/IP protocol, the communication protocol packet are mainly defended including remote sensing satellite base band data request protocol packet, remote sensing
Satellite-based band data protocol packet and rejection response protocol packet.
In the data distribution request for receiving user equipment transmission, the acquisition of remote sensing satellite base band data and dissemination system base
It monitors all data distributions using data delivery device as server end in C/S frameworks and asks and respond thereto.Then,
It is asked according to data distribution, the requested data of user equipment is sent to by user equipment by network, such as processing locality is set
Standby 1 and strange land processing equipment 2.
Fig. 2 shows remote sensing satellite base band data according to the present invention acquisitions exemplary to match with one of dissemination system 200
The block diagram set.As shown in Fig. 2, the acquisition of remote sensing satellite base band data includes task management device with dissemination system 200
210, data acquisition device 220, data storage device 230, user safety authentication device 240 and data delivery device 250.
There is task management device 210 simple task management interface to be used for human-computer interaction, and provides user and assign
The interface of data acquisition session.Task management device 210 be used for when receiving data harvesting request input by user (that is, with
When data acquisition session is assigned at family), it is based on data harvesting request input by user, generates data acquisition session list, and will give birth to
At data acquisition session list be written data storage device designated position.
Fig. 3 shows an exemplary block diagram of the task management device 210 in Fig. 2.As shown in figure 3, task
Managing device 210 includes data acquisition session list generation module 211 and writing module 213.
Data acquisition session list generation module 211 is used for when receiving data harvesting request input by user, and being based on should
Data harvesting request generates data acquisition session list.Writing module 213 is used to the data acquisition session list generated number is written
According in the designated position of storage device.
In the example of the present invention, data acquisition session list includes task odd numbers (order_id), satellite name (sat_
Id), orbit number (orbit_number), data acquisition beginning and ending time (acq_start_time/acq_stop_time), record
Data block size (block_size), digital demodulator IP address (dem_address), digital demodulator remote sensing satellite base
Band data terminal slogan (dem_dat_port), connection digital demodulator attempts the time (connect_try_time), data are adopted
Acquisition means file outgoing route (acq_output_path), system log catalogue (log_dir) information.Data acquisition session list
With simple ODL document forms write-in data storage device specified path (being assumed to be/Data/acq/plan/scan_dir).This
Outside, the naming rule of data acquisition session list is usually " task odd numbers _ satellite name _ orbit number .ODL ", and wherein task odd numbers accounts for 8
Position, satellite name account for 2, and orbit number accounts for 6.If 00000121_TH_019234.ODL indicates that task odd numbers is 121, orbit number is
19234 THEOS satellite data acquisition job orders, the job order particular content are as follows：
BEGIN
OBJECT=ACQ
Order_id=121
Sat_id=TH
Orbit_number=019234
Acq_start_time=" 2012-06-0806:18:00.00"
Acq_stop_time=" 2012-06-0806:28:00.00"
Block_size=512
Dem_address=10.4.2.14
Dem_dat_port=5880
Connect_try_time=10
Acq_output_path=/Data/acq/raw/TH_20120608061800_019234_1 21.dat
Log_dir=/Data/acq/log/
END_OBJECT=ACQ
END
Data acquisition device 220 is connected with data storage device 230, in the specific bit for detecting data storage device
There are when data acquisition session list in setting, remote sensing satellite base band is obtained from digital demodulator corresponding with data acquisition session list
Data protocol packet, and obtained after being parsed to acquired remote sensing satellite base band data protocol package remote sensing satellite base band data and
Remote sensing satellite base band data timecode information, the remote sensing satellite base band data protocol package be by digital demodulator to from number
Communication number obtains after being handled under the satellite received according to the corresponding remote sensing satellite of acquisition tasks list.
Fig. 4 shows an exemplary block diagram of the data acquisition device 220 in Fig. 2.As shown in figure 4, data
Harvester 220 includes detection module 221, base band data acquisition requests to generate module 223, base band data acquisition request sends mould
Block 225 and base band data acquisition module 227.
Detection module 221 is used to continue the designated position of scan data storage device, with the finger of detection data storage device
Positioning whether there is data acquisition session list in setting.Base band data acquisition requests to generate module 223 for detecting the presence of number
When according to acquisition tasks list, it is based on data acquisition session list, generates base band data acquisition request.Base band data acquisition request sends mould
Block 225 is used to the base band data generated acquiring request, is sent to digital demodulator corresponding with data acquisition session list,
That is, the base band data generated acquisition request is sent to the digital demodulator in data acquisition session list by network
The digital demodulator of IP address.
By taking aforementioned example tasks list as an example, base band data acquisition requests to generate module 223 according to the job order, generates data
Request protocol packet is acquired, as shown in table 1 below.Data harvesting request protocol package include request header information, data acquisition initial time,
Data acquire end time, data block size, the data block number sent every time, request ending message and reserved area.Request
Header, request ending message are used for the beginning and end of mark request protocol package, so that digital demodulator is between the two
Solicited message is recognized and is parsed.At the beginning of data acquire initial time expression data acquisition, at the end of data acquire
Between indicate data acquisition end time.Data block size indicates the size of the data block transmitted by digital demodulator.Every time
The data block number of transmission indicates the number for the data block that each protocol package is included when each transmission data of digital demodulator.
The data structure of 1 data harvesting request protocol package of table
When reaching data acquisition initial time (acq_start_time) as defined in job order, base band data acquisition request
Above-mentioned data harvesting request protocol package is sent to specified port by sending module 225, and the port is by digital demodulator IP
Location (dem_address) and digital demodulator remote sensing satellite base band data port numbers (dem_dat_port) uniquely determine, such as
It is 10.4.2.14 that foregoing task list, which uniquely determines port,:5880.
After base band data acquisition request is sent, base band data acquisition module begins through digital demodulator and obtains remote sensing
Satellite baseband data.Base band data acquisition module is marked according to the time of the data block size and each data block required in job order
Will is recorded according to following format, generates the remote sensing satellite base band data file corresponding to job order, as foregoing task list is remembered
Record the entitled 00000121_TH_019234.DAT of file generated.Fig. 5 shows the knot of tissue of remote sensing satellite base band data file
One example of structure.For example, data acquisition device 220 continues in scan data storage device designated position (such as/Data/acq/
Plan/scan_dir it) whether there is data acquisition session list.If there is data acquisition session list, then adopted at once according to data
Set task single-shot plays data acquisition, and data acquisition session single-turn is moved on in the job order catalogue being carrying out and go (as/
Data/acq/plan/working_dir), after the completion of the data acquisition session, job order is transferred to times being finished
It is engaged in monocular record (such as/Data/acq/plan/done_dir).
Base band data acquisition module 227 is used to acquire request based on the base band data that is generated, from data acquisition session
Single corresponding digital demodulator obtains remote sensing satellite base band data protocol package, and is assisted to acquired remote sensing satellite base band data
View packet obtains remote sensing satellite base band data and remote sensing satellite base band data timecode information, the remote sensing satellite base after being parsed
It is by digital demodulator to being passed under the satellite that remote sensing satellite corresponding with data acquisition session list receives with data protocol packet
What signal obtained after being handled.
Here, data acquisition device is based on C/S frameworks, is communicated with digital demodulator using ICP/IP protocol, complete
At the collecting work of remote sensing satellite base band data.During being communicated with digital demodulator, digital demodulator is made
For server end, and data acquisition device is as client, and communication between the two is that TCP/ is based on as defined in digital demodulator
The communications protocol packet of IP agreement includes mainly remote sensing satellite base band data request protocol packet, remote sensing satellite base band data protocol package
With rejection response protocol packet.Specifically, data acquisition device defers to digital solution when carrying out the acquisition of remote sensing satellite base band data
Adjust the procotol of device, first, acquire request sending module 225 by base band data and send remote sensing satellite to digital demodulator
Base band data real time data transmits request protocol packet (that is, base band data acquisition request).Then, digital demodulator receives this
After base band data acquisition request, is acquired and asked according to the base band data, based on communication number under the satellite received from remote sensing satellite
(that is, remote sensing satellite base band data) generates remote sensing satellite base band data protocol package, and is sent to data acquisition device by network
(base band data acquisition module), the size of data block and data block number are by base band data in remote sensing satellite base band data protocol package
Acquisition request determines.Base band data acquisition module carries out at parsing acquired remote sensing satellite base band data communication protocol packet
Reason, obtains remote sensing satellite base band data and corresponding remote sensing satellite base band data timecode information.Then, by obtained remote sensing
In satellite baseband data and corresponding remote sensing satellite base band data timecode information deposit data storage device.
Remote sensing satellite base band data in data storage device exists in the form of binary data file, and corresponding remote sensing is defended
Satellite-based band data time code information storage is binary data file.In addition, remote sensing satellite base band data timecode information file
Name and the name of remote sensing satellite base band data are completely the same in addition to suffix.
Fig. 6 shows an exemplary schematic diagram of the data structure of remote sensing satellite base band data timecode information file.
As shown in fig. 6, the timecode information file includes final position word in starting position field and file in timing code field, file
Section.The timing code indicates the timing code of remote sensing satellite base band data.Starting position indicates the remote sensing satellite base band number in file
According to the starting position in remote sensing satellite base band data file.Final position indicates the remote sensing satellite base band data distant in file
Feel the end position in satellite baseband data file.
Data storage device 230 and 250 phase of task management device 210, data acquisition device 220 and data delivery device
Even, be responsible for storage data acquisition device acquired in remote sensing satellite base band data, remote sensing satellite base band data timecode information and
The data acquisition session list that task management device 210 is generated.In addition, in the acquisition of remote sensing satellite base band data and dissemination system
200 include user safety authentication device 240 in the case of, data storage device 230 also with 240 phase of user safety authentication device
Even, for storing registration user information.When carrying out user safety authentication, the registration user information stored is provided to user
Safety certification device 240.
User safety authentication device 240 is connected with data storage device 230 and data delivery device 250, for receiving
After being asked to data distribution, it is based on user equipment information, authentication is carried out to user equipment.Recognize needing progress user security
When card, user also needs to registration user information, and the user information registered is stored in data storage device 230.?
After the data distribution request for receiving user equipment transmission, user safety authentication device by including in asking data distribution
User information is compared with the registration user information stored, authentication is carried out to user, whether to judge the user
For registered validated user.If it is validated user, then allow to distribute data to the user.Otherwise, do not allow to the user
Distribute data.
It registers user information also to store with ODL document forms, including user name (user_name), password (user_
Passwd), User IP (user_ip), user's MAC address (user_mac), maximum number of connections (max_connection), certification
Mode (access_method) information.User information ODL file samples are as follows：
BEGIN
OBJECT=USERS_david
User_name=david
User_passwd=666_666
User_ip=10.4.2.14
User_mac=00-ff-ff-da-df-fd-52
Max_connection=2
Access_method=ip_and_mac
END_OBJECT=USERS_david
OBJECT=USERS_james
User_name=james
User_passwd=666_666
User_ip=10.4.2.15
User_mac=00-ff-ee-da-df-fd-51
Max_connection=2
Access_method=passwd
END_OBJECT=USERS_james
END
In sample above, user's david authentication modes are that IP adds MAC address authentication, only submit distribution request
User information and the user_ip under user information ODL files " OBJECT=USERS_david " column in data storage device
It then could only be needed by certification, user james and " OBJECT=in user information ODL files when consistent with user_mac
User_name and user_passwd under USERS_james " columns, which meet, can pass through certification.
Data delivery device 250 is connected with data storage device 230 and user safety authentication device 240, for receiving
After the data distribution request sent to user equipment, requested satellite baseband data is distributed to user equipment.
Data delivery device is based on C/S frameworks when carrying out Data distributing, and all data are monitored as server end
Distribution is asked and is responded thereto.Data delivery device monitors the number that may be arrived while data acquisition device works
It is asked according to distribution, the data distribution request includes user information, data application information.The data application information includes application
Type, application satellite name and application orbit number.The applying type includes real-time Data Transmission and post-flight data transmission.
Data delivery device 250 extracts user information therein, and pacify using user after receiving data distribution request
Full authentication device is to asking the identity of equipment to carry out safety certification.If not authenticated, it includes mistake to be sent to the equipment
The rejection of information responds.If, will be according to applying type (real-time Data Transmission or the subsequent number in application information by certification
According to transmission) to equipment offer Data distributing, that is, send real-time or subsequent remote sensing satellite base band data.
Fig. 7 shows an exemplary block diagram of the data delivery device 250 in Fig. 2.As shown in fig. 6, data
Diostribution device 250 includes data distribution request receiving module 251 and data distribution module 253.
Data distribution request receiving module 251 is used to receive the data distribution request sent from user equipment.Data distribution
Module 253 be used for receive data distribution request after, based on data distribution request data application information in applying type,
Apply for satellite name and application orbit number, the satellite baseband data of distribution will be asked to be distributed to user equipment.
It, directly will be in data storage device when data delivery device carries out the distribution service of Real-time Remote Sensing satellite baseband data
Remote sensing satellite base-band data stream be sent to request equipment in real time.Subsequent remote sensing satellite base band data is carried out in data delivery device
When distribution service, the remote sensing corresponding with application orbit number search of the application satellite name in data application information in being asked according to distribution
Entire file is sent to request equipment by satellite baseband data file.If without corresponding document, it includes error message to send
Rejection response.During Data distributing is provided, data delivery device to the data distribution that may be received ask into
Row response.In another example of the present invention, after data distribution, data delivery device has been distributed to request equipment transmission
Finish information, it includes distribution beginning and ending time, transmission data amount which, which finishes information,.
Fig. 8 shows the data distribution module when applying type is the transmission of Real-time Remote Sensing satellite baseband data in Fig. 7
An exemplary block diagram.
As shown in figure 8, when applying type is the transmission of Real-time Remote Sensing satellite baseband data, data distribution module 253 includes
Data acquisition session list determining module 2531, data obtaining module 2532, data start determining module 2533, digital independent
Module 2534 and the first sending module 2535.
Data acquisition session list determining module 2531 is used for after receiving data distribution request, is based on data application information
In application satellite name and application orbit number, from the data acquisition session list being carrying out determination it is corresponding with data distribution request
Data acquisition session list.
Data obtaining module 2532 is used to, based on identified data acquisition session list, obtain corresponding remote sensing satellite base band
Data file and remote sensing satellite base band data timecode information.
Data start determining module 2533 is used for based on acquired remote sensing satellite base band data timecode information, really
Surely the data start for the data that should be sent.Data read module 2534 is used for the remote sensing satellite base from data storage device
With the data read in real time in data file since data start.First sending module 2535 is used for read number
According to the user equipment for sending out data distribution request is sent to, until data acquisition terminates.
Fig. 9 shows the data distribution module when applying type is subsequent remote sensing satellite base band data transmission in Fig. 7
An exemplary block diagram.
As shown in figure 9, when applying type is subsequent remote sensing satellite base band data transmission, data distribution module 253 includes
Satellite baseband data file determining module 2537 and the second sending module 2539.
Satellite baseband data file determining module 2537 be used for based in data application information application satellite name and application
Orbit number determines remote sensing satellite base band data file corresponding with the data distribution request that user equipment is sent.Second sends mould
Block 2539 is used to for identified remote sensing satellite base band data file to be sent to the user equipment for sending out data distribution request.?
In the example, entire file is sent jointly to user equipment by the second sending module 2539.
Include user safety authentication device 240 in system described above, but in another example of the present invention, such as
Fruit need not carry out safety certification, then the acquisition of remote sensing satellite base band data and dissemination system can not also include user safety authentication
Device 240.In this case, data distribution request can include only data application information.Data delivery device 250 is connecing
After the data distribution request for receiving user equipment transmission, requested satellite is just sent to user equipment according to data application information
Base band data.
Remote sensing satellite base band data according to the present invention is acquired above with reference to Fig. 1 to Fig. 9 and is said with dissemination system
It is bright.Remote sensing satellite base band data according to the present invention is acquired below with reference to Figure 10 to Figure 13 and is described with distribution method.
Figure 10 shows the overview flow chart of the data acquisition of remote sensing satellite base band data according to the present invention.
As shown in Figure 10, when carrying out the acquisition of remote sensing satellite base band data, first, in step S1010, remote sensing is persistently scanned
Satellite baseband data acquire with dissemination system in data storage device designated position, in detection data storage device whether
There are data acquisition session lists.Here, the data acquisition session list is when receiving data harvesting request input by user
It generates, and is written into the designated position of data storage device.For example, the task pipe for passing through task management device in user
After data acquisition session is assigned at reason interface, data acquisition session list is generated, and the designated position of data storage device is written.
If not detecting data acquisition session list, that is, the testing result of step S1010 is no, then returns to step
S1010 is persistently detected.
If detecting data acquisition session list, that is, the testing result of step S1010 is yes, then in step S1020, base
In detected data acquisition session list, base band data acquisition request is generated.Then, in step S1030, the base that will be generated
Band data harvesting request, is sent to digital demodulator corresponding with data acquisition session list by network, i.e., is adopted with data
The digital demodulator of digital demodulator IP address in set task list.
Then, in step S1040, request is acquired based on the base band data generated, via the digital demodulator, is passed through
Network obtains remote sensing satellite base band data and corresponding remote sensing satellite base band from remote sensing satellite corresponding with data acquisition session list
Data time code information.Here, remote sensing satellite corresponding with data acquisition session list is that have defending in data acquisition session list
The remote sensing satellite of star names.
Figure 11 shows an exemplary flow of the data acquisition of remote sensing satellite base band data according to the present invention
Scheme, process shown in Figure 11 is to detect data acquisition session list and generate the process executed after base band data acquisition request.
As shown in figure 11, after detecting data acquisition session list and generating base band data acquisition request, in step
S1110 passes through network trial and digital demodulator based on the digital demodulator IP address for including in data acquisition session list
Establish connection.Then, in step S1120, it is successful connection to judge whether and the trial time is not above the predetermined time (that is, even
It connects digital demodulator and attempts the time).
If the judging result of step S1120 is yes, in step S1130, transmitted to digital demodulator transmission data
Director data packet (that is, base band data acquisition request).If the judging result of step S1120 is no, step is returned to
S1110。
In step S1140, the response data packet for base band data acquisition request transmitted from digital demodulator is received,
The response data packet generally includes data reject protocol packet or remote sensing satellite base band data protocol package.
In step S1150, the type of response data packet is judged.
If response data packet is to reject response protocol packet, in step S1160, error reason therein is extracted, and will
Error message write error daily record.Then, in step S1170, error reason is received to user feedback.Another in the present invention shows
In example, step S1160 and S1170 can also be omitted.Above-mentioned flow is also correspondingly revised as, and response protocol packet is rejected receiving
When, flow terminates.
If response data packet is remote sensing satellite base band data protocol package, in step S1180, according to digital demodulator
Communication protocol between the acquisition of remote sensing satellite base band data and dissemination system, parses and extracts remote sensing satellite base band data therein
Stream.Then, in step S1190, by the remote sensing satellite base band data extracted and corresponding remote sensing satellite base band data time
In code information storage to data storage device.
In step S1195, judge whether data acquisition is completed.If it is not, returning to step S1180, constantly solve
It analyses and remote sensing satellite base-band data stream is stored in the memory and hard disk of data storage device, until data acquisition finishes.
Figure 12 shows the overview flow chart of the data dissemination process of remote sensing satellite base band data according to the present invention.
As shown in figure 12, in step S1210, the data distribution request sent from user equipment, the data distribution are received
Request includes user equipment information and data application information, the data application information includes applying type, apply for satellite name and
Application orbit number and the applying type include real-time Data Transmission and post-flight data transmission.
Then, in step S1220, after receiving data distribution request, the data letter of application based on data distribution request
Applying type, application satellite name and the application orbit number for including in breath, will ask the satellite baseband data of distribution to be distributed to use
Family equipment.
Figure 13 shows an exemplary flow of the data dissemination process of remote sensing satellite base band data according to the present invention
Figure.
As shown in figure 13, after the acquisition of remote sensing satellite base band data starts with dissemination system, in step S1310 data distributions
Whether device is monitored receives the data distribution request that user equipment is sent out.
If be not received by, runs to step S1330 and judge whether data acquisition finishes.If data acquisition is not tied
Beam, that is, the result of step S1330 is no, then returns to step S1310, continues to monitor whether have request of data arrival.If adopted
Collection is over, i.e. the result of step S1330 is yes, then proceeds to step S1340, after waiting for all requests to be all disposed,
It exits.
If receiving data distribution request, proceed to step S1320, request processing is initiated in step S1320.Request
Independent operating after processing starts, original is monitored step and is returned immediately after request processing starts, and runs to step S1330.
It is the main process flow for monitoring and initiating request processing above, request processing procedure will be independent of aforementioned after starting
Process flow operation.Specifically, the user information after request processing starts in step S1321, extraction data distribution request.Then,
In step S1322, using user safety authentication device, by the user information extracted and the registration stored in data storage device
Whether user information is compared, be legal user equipment with the user equipment for judging to send out data distribution request.
If illegal, in step S1323, the illegal prompt of request is sent to the user equipment for sending out request.Then, it carries out
To step S1327.
If legal, in step S1324, confirmation message is sent to the user equipment for sending out request.Then, in step
S1325 sends real-time or subsequent remote sensing according to the applying type in the data application information of data distribution request to user equipment
Satellite baseband data.Transmission process about real-time or subsequent remote sensing satellite base band data as described above, no longer describe herein.
Then, in step S1326, message is finished to request equipment transmission data distribution.Then, proceed to step S1327.
In step S1327, request processing is exited in request, and indicates that the request has been disposed.
Remote sensing satellite base band data acquisition according to the present invention and distribution procedure are described above with reference to Figure 10 to Figure 13.This
In it is noted that for Figure 10 to Figure 13 describe embodiment, various modifications can also be carried out.
For example, for the embodiment described in Figure 13, in the case where user safety authentication need not be carried out, it is convenient to omit
Step S1321-S1323.In addition, in another example of the present invention, step S1327 can also be omitted.In the another of the present invention
In example, step S1324 can also be omitted.
Using the remote sensing satellite base band data acquisition of the present invention and dissemination system, remote sensing satellite base band number is completed by network
According to real-time acquisition, while end equipment provides unified Data distributing backward by network, to be deployed in local and remote
A variety of processing equipments safe and effective real-time or subsequent remote sensing satellite base band data distribution service is provided.
In addition, according to the present invention, by network mode, the acquisition of remote sensing satellite base band data is made to have broken away from portion with dissemination system
The limitation of distance is affixed one's name to, and unified Data distributing is provided for other remote sensing satellite base band data processing equipments so that is distant
Feel satellite baseband data acquisition and is not necessarily to dedicated data acquisition equipment with dissemination system, it can using the network equipment of different performance
To meet acquisition and the distribution work that different remote sensing satellite base band datas pass down rate, different data distribution rate requirement, significantly
The deployment way for simplifying remote sensing satellite base band data acquisition and dissemination system, reduces lower deployment cost, while making remote sensing satellite
The deployment way of base band data back-end processing equipment is also more safe and simple.
In addition, according to the method for the present invention, by data acquisition session list with digital demodulator be combined in the way of, can be with
It realizes in the same period, by real-time performance to being acquired while more remote sensing satellite base band datas；In being asked using distribution
Application information, uniquely determine and need the remote sensing satellite base band data that is distributed, the monitoring in conjunction with TCP/IP and concurrent function,
By real-time performance simultaneously, on demand multiple remote sensing satellite base band datas are carried out with real-time or subsequent remote sensing satellite base band data
Distribution function.A multi input may be implemented in the present invention as a result, the acquisition of remote sensing satellite base band data and the distribution of multi output are
System greatly improves the efficiency of data acquisition and dissemination system and at the same time realizing acquisition and the distribution work of multi-satellite.
In addition, being also implemented as the computer program executed by CPU according to the method for the present invention.In the computer journey
When sequence is executed by CPU, the above-mentioned function of being limited in the method for the present invention is executed.
In addition, above method step and system unit can also utilize controller (for example, processor) and for depositing
Storage is so that controller realizes that the computer readable storage devices of the computer program of above-mentioned steps or Elementary Function are realized.
Although content disclosed above shows exemplary embodiment of the present invention, it should be noted that without departing substantially from power
Under the premise of profit requires the scope of the present invention limited, it may be many modifications and change.It is real according to invention described herein
The function, step and/or action for applying the claim to a method of example are not required to execute with any particular order.In addition, although the present invention
Element can describe or require in the form of individual, be unless explicitly limited odd number it is also contemplated that multiple.
Although describing each embodiment according to the present invention above with reference to figure to be described, people in the art
Member can also do it should be appreciated that each embodiment proposed to aforementioned present invention on the basis of not departing from the content of present invention
Go out various improvement.Therefore, protection scope of the present invention should be determined by the content of appended claims.
Claims (4)
1. a kind of data delivery device of remote sensing satellite base band data is based on C/S frameworks, the conduct when carrying out Data distributing
Server end monitors all data distributions and asks and respond thereto, wherein all data include passing through digital solution
The remote sensing satellite base band data and remote sensing satellite base band data timecode information that device obtains are adjusted,
The data delivery device includes：Data distribution request receiving module, for receiving the data sent from user equipment point
Hair request, the data distribution request includes user equipment information and data application information, and the data application information includes Shen
Please type, application satellite name and application orbit number and the applying type include real-time Data Transmission and post-flight data transmission；
And
Data distribution module, for receive data distribution request after, based on data distribution request data application information in
Applying type, application satellite name and application orbit number, will ask distribute satellite baseband data be distributed to user equipment；
Wherein, when the applying type is real-time Data Transmission, the data distribution module includes：
Data acquisition session list determining module, for based in data application information application satellite name and application orbit number, from
Data acquisition session list corresponding with data distribution request is determined in the data acquisition session list being carrying out；
Data obtaining module, for based on identified data acquisition session list, obtaining corresponding remote sensing satellite base band data text
Part and remote sensing satellite base band data timecode information；
Data start determining module is used for based on acquired remote sensing satellite base band data timecode information, it is determined that
The data start of the data of transmission；
Data read module is originated for being read in real time from the remote sensing satellite base band data file of data storage device from data
The data that position starts；And
Read data are sent to the user equipment for sending out data distribution request by the first sending module, until data acquire
Terminate；
The data delivery device is additionally operable to extract user information therein, and is set to request using user safety authentication device
Standby identity carries out safety certification；
If not authenticated, send the rejection comprising error message to the equipment and respond, if by certification, by basis
Applying type in application information provides Data distributing to the equipment.
2. the data delivery device of remote sensing satellite base band data as described in claim 1, wherein in the applying type be thing
Afterwards when data transmission, the data distribution module includes：
Satellite baseband data file determining module is used for based on the application satellite name and application orbit number in data application information,
Determine remote sensing satellite base band data file corresponding with the data distribution request that user equipment is sent；And
Second sending module sends out data distribution request for by identified remote sensing satellite base band data file, being sent to
User equipment.
3. a kind of remote sensing satellite base band data distribution method is based on C/S frameworks, when carrying out Data distributing from server end
It monitors all data distributions to ask and respond thereto, wherein all data include obtaining by digital demodulator
Remote sensing satellite base band data and remote sensing satellite base band data timecode information, wherein
The method includes：
The data distribution request sent from user equipment is received, the data distribution request includes user equipment information and data Shen
Please information, the data application information includes applying type, application satellite name and the application orbit number and applying type packet
Include real-time Data Transmission and post-flight data transmission；And
Receive data distribution request after, based on data distribution request data application information in include applying type, Shen
Please satellite name and application orbit number, will ask distribute satellite baseband data be distributed to user equipment；
Wherein, when the applying type is real-time Data Transmission, according in data application information application satellite name and application
Orbit number determines data acquisition session list corresponding with data distribution request from the data acquisition session list being carrying out；
According to identified data acquisition session list, corresponding remote sensing satellite base band data file and remote sensing satellite base band number are obtained
According to timecode information；
According to acquired remote sensing satellite base band data timecode information, it is determined that the data start of the data sent；
Read the data since data start in real time from the remote sensing satellite base band data file of data storage device；With
And
Read data are sent to the user equipment for sending out data distribution request, until data acquisition terminates；
After receiving user equipment information, user information therein is extracted, and using user safety authentication device to asking equipment
Identity carry out safety certification；
If not authenticated, send the rejection comprising error message to the equipment and respond, if by certification, by basis
Applying type in application information provides Data distributing to the equipment.
4. remote sensing satellite base band data distribution method as claimed in claim 3, wherein in the applying type be post-flight data
When transmission,
According to the application satellite name and application orbit number in data application information, determine that the data distribution sent with user equipment is asked
Seek corresponding remote sensing satellite base band data file；And
By identified remote sensing satellite base band data file, it is sent to the user equipment for sending out data distribution request.
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| CN201210301120.6A CN102832988B (en) | 2012-08-22 | 2012-08-22 | System and method for acquiring and distributing baseband data of remote sensing satellite |
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| CN103873134B (en) * | 2014-03-20 | 2017-08-29 | 中国空间技术研究院 | A kind of satellite data method for subscribing of compatible multiple data format |
| CN104267622B (en) * | 2014-09-09 | 2017-02-08 | 中国航天科技集团公司第九研究院第七七一研究所 | Satellite telemetering acquisition device and method based on tasks and time |
| CN104683012A (en) * | 2015-02-02 | 2015-06-03 | 中国科学院遥感与数字地球研究所 | Integration system of remote sensing satellite receiving system |
| CN105610530B (en) * | 2015-12-25 | 2021-02-23 | 航天恒星科技有限公司 | Satellite data acquisition and analysis method and system |
| CN106126442A (en) * | 2016-06-17 | 2016-11-16 | 北京京坤倍益科技发展有限公司 | A kind of data store organisation and remote sensing satellite data-storage system |
| CN111682893B (en) * | 2020-06-08 | 2022-02-01 | 中国人民解放军32039部队 | Relay satellite data post distribution system |
| CN116471260B (en) * | 2023-06-20 | 2023-09-08 | 中国科学院空天信息创新研究院 | Remote sensing satellite original data distribution and transmission device and method |
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| CN102832988A (en) | 2012-12-19 |
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