CN107911702B - Lightning image processing system and method in real time on a kind of more FPGA collaboration star - Google Patents
Lightning image processing system and method in real time on a kind of more FPGA collaboration star Download PDFInfo
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- CN107911702B CN107911702B CN201711195001.6A CN201711195001A CN107911702B CN 107911702 B CN107911702 B CN 107911702B CN 201711195001 A CN201711195001 A CN 201711195001A CN 107911702 B CN107911702 B CN 107911702B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/436—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
Abstract
The invention proposes real-time lightning image processing system and methods on a kind of more FPGA collaboration stars, including real-time lightning detection processing module, background image data processing module, lightning signal and background image coding module, 500 frames/second can be handled in real time, and data rate is up to 10.9Gbps raw image data and completes lightning detection processing.Data localized technology is cooperateed with by 8 high-performance SRAM type FPGA and 4 anti-fuse FPGAs, it can not only be effectively detected and identify lightning signal, it realizes simultaneously and flexibly extracts original background data block, complete lightning signal data and block of background data assembly coding function.Original picture block is extracted by anti-fuse FPGA and descends into ground, and the identification and extraction of transient state target are completed using SRAM type FPGA.In-orbit target identification efficiency is improved, multipurpose application can be met, Radiation hardness is strong, is suitble to high rail satellite application.
Description
Technical field
The invention belongs to scan picture field on star, propose on a kind of more FPGA collaboration stars at lightning image in real time
System and method is managed, the real-time processing that can be used for in-orbit camera image data carries out the detection of transient state lightning signal and identification.
Background technique
Lightning detection plays an important role in terms of meteorological observation, by lightning activity orientation, intensity and motion frequency
Monitoring can be deepened to strong convective weather on land and ocean distribution, the understanding of structure and variation, and timely and accurately forecast is sudden and violent
The diastrous weathers such as rain, hurricane can significantly lower the life and property loss of the mankind within the scope of large scale.Lightning is observed
Original image is obtained by 500 frames/second high speed imaging instrument, data volume is big, and mass data is limited by satellite-ground link bandwidth, can not
It is transferred to grounded receiving station；Simultaneously limited image data be transferred to ground reprocess cannot to this kind of transient state target of lightning and
When detection, identification and processing, it is necessary to by in-orbit processing detection and identifying lightning signal.Special Graphs this kind of for lightning detection
As processing, image processing method can not solve problems on conventional star, and in addition satellite borne equipment has strictly volume, power consumption
Constraint, ground rely on mainframe computer processing method be also not suitable for.
Summary of the invention
Technical problem solved by the present invention is provide on a kind of more FPGA collaboration star lightning image processing system in real time and
Method is solved to mass image data high speed processing, real-time detection and identifies transient state lightning signal, and can flexibly be mentioned
Original background data block is taken, the complete detection information of lightning signal and block of background data assembly coding are descended into grounded receiving station.
There is good application value on grasping lightning activity situation and forecasting and warning strong convective weather.
The technical solution of the invention is as follows: lightning image processing system, including reality in real time on a kind of more FPGA collaboration stars
When lightning detection processing module, background image data processing module, lightning signal and background image coding module；
Real-time lightning detection processing module receives the whole frame raw image data of background image data processing module forwarding, follows
Ring caches adjacent multiframe data, according to lightning detection algorithm, multiple FPGA collaboration parallel processing present frames and caching it is adjacent
Multiframe data, real-time detection and the lightning signal for identifying present frame, complete lightning information encode and is output to lightning signal and
Background image coding module；
Background image data processing module receives the focal plane raw image data that high-speed serial bus is sent, and is transmitted to
Real-time lightning detection processing module, while the raw image data for specifying region is extracted from present frame according to ground telecommand
Block；
Lightning signal and background image coding module receive the lightning coded data of real-time lightning detection processing module output,
Simultaneously receive background image data processing module output specified region raw image data block, reconfigure coding after according to
Bus standard is sent to external data transmission equipment.
External data transmission equipment is sent to according to SpaceWire bus format.
The real-time lightning detection processing module includes more FPGA parallel processing elements, high-speed circulating memory buffer list
Member, lightning signal coding unit, DCCU data communication control unit；
More FPGA parallel processing elements receive the raw image data of DCCU data communication control unit forwarding, each FPGA processing
The lightning image data of one subregion；The partition data is stored in high-speed circulating memory buffer unit simultaneously；
High-speed circulating memory buffer unit is one group of random access memory, using F frame come when carrying out lightning detection, if adopting
It when with low speed random access memory, is made of F low speed random access memory chip, each memory chip saves a frame picture number
According to；When according to high speed random access memory, using bit wide extended mode, table tennis is completed within the pixel time using two groups of memories
Caching；
Lightning signal coding unit completes the information coding that more FPGA parallel processing elements detect effective lightning signal；
DCCU data communication control unit receives background image data processing as the interface with background image data processing module
The frame raw image data is distributed to each of more FPGA parallel processing elements by the whole frame raw image data of module forwards
FPGA, the lightning coded data for receiving the output of lightning signal coding unit are transmitted to lightning signal and background image coding module.
More FPGA parallel processing elements use N piece SRAM type FPGA, turn when receiving DCCU data communication control unit
When the raw image data of hair, each SRAM type FPGA handles the lightning image data of a subregion.
One picture frame is divided into N number of subregion by the quantity according to FPGA, and each SRAM type FPGA handles a subregion
Lightning image data specific processing mode are as follows: partition data is stored in the on-chip memory of FPGA first, while should
Partition data is stored in the region that high-speed circulating memory buffer unit is made of N number of region, then reads high-speed circulating
The same position partition data of the preceding N-1 frame of the other region storages of memory buffer unit；To each picture in the subregion of present frame
First amplitude carries out clipping, if pixel amplitude is greater than signal limiter setting value, replaces current pixel with signal limiter setting value
Amplitude carries out background evaluation, and the no current amplitude that then be used directly carries out the calculating of background evaluation value；According to former frames and present frame
The amplitude of same pixel position is weighted summation, if current pixel amplitude, which is greater than background evaluation value, so judges the pixel position
It is equipped with there may be lightning signal, otherwise judges that lightning signal is not present in the pixel position；One group of threshold value hierarchical table is set, according to
Background evaluation value searches corresponding threshold value in threshold value table, and the amplitude of alternative lightning pixel and background evaluation value are made the letter after subtracting
Number value is compared with threshold value, if it is greater than threshold value, then it is assumed that and the signal value is exactly the lightning signal amplitude of current pixel position,
Otherwise it is assumed that lightning does not occur for the pixel position, lightning signal is not present.
The high-speed circulating memory buffer unit using memory be SRAM, SDRAM or DDR when, use F frame come
When carrying out lightning detection, high-speed circulating memory buffer unit is made of F independent SRAM, SDRAM or DDR chips, each
SAM Stand Alone Memory chip saves a frame image data.When using DDR2 DDR3 memory, using bit wide extended mode, only
Need two groups of DDR2 perhaps every group of DDR2 or DDR3 of DDR3 a storage cell save F-1 frame same pixel position number
According to using ping-pong buffer mode, when handling each pel data of a frame image, while by the same pixel of F-2 frame of reading
As at next frame lightning detection in the storage to another group of DDR2 or DDR3 of the same pixel position of position data and present frame
Reason uses.The operation of this ping-pong buffer requires to complete within the pixel time.
The lightning signal coding unit detects that effective lightning signal dodges for more FPGA parallel processing elements
Power information coding, content include Lightning position, lightning intensity, background evaluation value, threshold value, position check code and lightning time, are dodged
At the time of the electric time is present frame.
The background image data processing module and lightning signal and background image coding module use anti-fuse FPGA
It realizes.
According to the method that lightning image processing system carries out image procossing in real time on above-mentioned more FPGA collaboration stars, feature exists
In steps are as follows:
1) background image data processing module receives focal plane raw image data, and is transmitted to real-time lightning detection processing mould
Block, while being extracted from present frame and the raw image data block in region is specified to export to lightning signal and background image coding mould
Block；
2) DCCU data communication control unit of lightning detection processing module exports after receiving the image data subregion forwarded in real time
To more FPGA parallel processing elements, high-speed circulating memory buffer unit；High-speed circulating memory buffer unit stores adjacent
Multiframe data are supplied to more FPGA parallel processing elements and use, and more FPGA parallel processing elements complete detection and identification lightning signal
Effective lightning signal is simultaneously exported and gives lightning signal coding unit by calculation processing；Lightning signal coding unit is completed lightning information and is compiled
Output is to DCCU data communication control unit after code；DCCU data communication control unit by lightning information coded data export to lightning signal with
Background image coding module；
3) lightning signal and background image coding module by original picture block and lightning information coded data according to
SpaceWire bus format is combined into data packet and exports to external data transmission equipment.
The advantages of the present invention over the prior art are that:
(1) real-time lightning image processing system on more FPGA of the invention collaboration star, passes through multi-disc high-performance SRAM type
FPGA and anti-fuse FPGA collaboration data localized can handle 500 frames/second in real time, and it is original that data rate is up to 10.9Gbps
Image data completes lightning detection processing.System computing capacity and storage resource can support high-speed, big data quantity star on
Scan picture is suitble to the detection and identification of transient state target；
(2) real-time lightning image processing system on more FPGA of the invention collaboration star, by utilizing multi-disc high-performance SRAM
The real-time lightning detection processing of type FPGA, improves process performance and flexibility, is conducive to the renolation of algorithm.It is anti-by utilizing
The strong anti-fuse FPGA of irradiation ability receives raw image data, and extracts specified background image data block, completes lightning
The coding and output of information and background data improve the reliability that system works when high rail satellite spatial radiation environment is severe；
(3) lightning image processing system establishes high rail and stationary orbit lightning in real time on more FPGA of the invention collaboration star
Detect the good system architecture of versatility of processing, Interface Expanding is strong, and memory resource selects space big, to the detection of user with
Identify that new transient state target requirement can timely respond to.
Detailed description of the invention
Real-time lightning image processing system schematic diagram on the more FPGA collaboration stars of Fig. 1；
Fig. 2 lightning detection treatment process schematic diagram
Fig. 3 focal plane data-signal timing diagram；
Fig. 4 Parallel image data timing diagram；
The read operation timing diagram of Fig. 5 high-speed memory DDR；
The write operation timing diagram of Fig. 6 high-speed memory DDR；
Fig. 7 SpaceWire bus interface figure；
Fig. 8 SpaceWire data packet format
Specific embodiment
The present invention proposes that a kind of more FPGA cooperate with lightning image processing system, including real-time lightning detection processing in real time on star
Module, background image data processing module, lightning signal and background image coding module.Real-time lightning detection processing module is with 8
Piece SRAM type FPGA parallel processing is core, completes real-time transient state lightning target information detection and identification function.Background image number
According to processing module, lightning signal and background image coding module by 4 high reliability Flouride-resistani acid phesphatase anti-fuse FPGAs control
Core completes the reception of focal plane raw image data and forwarding, the extraction of background image data block, lightning information and block of background data group
Conjunction is encoded into format packet and SpaceWire bus is sent.Background image data processing module includes 16 tunnel rate 1.6Gbps high speed
Serial received bus receives 500 frames/second raw image data that 1400 × 1400 pixel faces battle array focal plane generates, passes through antifuse
High speed parallel interface is transmitted to real-time lightning detection processing module between FPGA and SRAM type FPGA, according to lightning signal and background
The instruction of image code parsing requires the block of background data for extracting specified region and is sent to it.Real-time lightning detection processing module
Be made of four parts, including DCCU data communication control unit, more FPGA parallel processing elements, high-speed circulating memory buffer unit,
Lightning signal coding unit.DCCU data communication control unit receives the raw image data of background image data processing module forwarding,
It is also responsible for the lightning information data that lightning signal coding unit exports being sent to lightning signal and background image coding module.It is more
FPGA parallel processing element is responsible for lightning detection calculating, and 8 SRAM type FPGA carry out data communication using MGT high speed network.It is more
Piece SRAM type FPGA uses adjacent 7 frame image data, using handling by pixel, utilize associated information calculation background evaluation between frame
Value is detected using adaptive threshold hierarchical table and is identified effective lightning signal.High-speed circulating memory buffer unit is used for
Circulation stores newest adjacent 6 frame image data and current frame image data.Lightning signal coding unit to lightning signal and its
Detection process parameter information is encoded, including Lightning position (20bits), lightning intensity (12bits), background evaluation value
(12bits), threshold value (12bits) and position check code (8bits), total 64bits.Lightning signal and background image coding module
The background block data of background image data processing module output are received, and at the same time receiving real-time lightning detection processing module output
Lightning information coded data be combined into format packet data transmission equipment be sent to by SpaceWire bus.
The structural schematic diagram for cooperateing with real-time lightning image processing system on star for the more FPGA of the present invention as shown in Figure 1, is divided into
Circuit part corresponding to background image data processing module and lightning signal and background image coding module (anti-fuse FPGA into
Row timing control) and real-time lightning detection processing module corresponding to circuit part (SRAM type FPGA carry out timing control).Instead
Fuse FPGA control circuit part includes that high speed serialization receives bus circuit, forwarding raw image data interface, lightning coding letter
Cease receiving interface, three lines receive circuit, three line transmitting lines, SpaceWire bus interface totally 6 circuits.SRAM type FPGA into
Row sequential control circuit part includes two groups of high-speed memories (or 7 groups of slow memories), receives forwarding raw image data
Interface, lightning coding information data transmission interface.
Fig. 2 is lightning detection treatment process schematic diagram, and specific calculation processes are as follows:
Step 1: the signal of focusing plane output is compared with signal limiter setting value, if it is greater than signal limiter setting value,
Then current signal value is replaced to carry out background evaluation with signal limiter setting value, the no current signal value that then be used directly carries out background and comments
Estimate, prevents excessive transient state point source echo signal from polluting to background evaluation.
Step 2: calculating background evaluation value.It is weighted and is asked according to the amplitude of former frames and the same pixel position of present frame
With if current pixel amplitude is greater than background evaluation value and so judges that the pixel position there may be lightning signal, otherwise sentence
Breaking, there is no lightning signals for the pixel position.
Step 3: threshold data compares detection and identification lightning signal.One group of threshold value hierarchical table is set, according to background evaluation
Value searches corresponding threshold value in threshold value table, and the amplitude of alternative lightning pixel and background evaluation value are done the signal value after subtracting and threshold
Value is compared, if it is greater than threshold value, then it is assumed that and the signal value is exactly the lightning signal amplitude of current pixel position, otherwise it is assumed that
Lightning does not occur for the pixel position, and lightning signal is not present.
High speed serialization receives bus circuit: the raw image data of 16 road 1.6Gbps of focal plane circuit output, is turned simultaneously by string
Chip completion serial data is converted to 12bits parallel data and is output to inside anti-fuse FPGA.If Fig. 3 is focal plane data-signal
Timing diagram, universal serial bus further include frame useful signal and row useful signal, by going here and there simultaneously in addition to the pel data of 12bits
Conversion restores framing useful signal, row useful signal and 12bits Parallel image data.Fig. 4 is Parallel image data sequential relationship
Figure, SRAM type FPGA reads and writes the consecutive frame data time sequence relationship of high-speed circulating memory buffer unit storage, anti-fuse FPGA turns
It is identical as Fig. 4 to SRAM type FPGA signal sequence relationship to send out raw image data.
Fig. 5 and Fig. 6 is the read-write sequence relational graph of high-speed memory DDR2, including differential clocks CK, order Command,
The signals such as address Address, data.This paper concrete scheme has used two groups of DDR2, and every group of storage cell will cache 6 frames
The data of the same pixel position, bit wide is 72bits after extension.The data of one present frame pixel of every processing, which are just read, closes on 6
The data of the same pixel position of frame, then by closest to 5 frame pel datas and the data of present frame pixel be combined into 72bits number
According in another group of DDR2 of write-in.
Three lines receive circuit, three line transmitting lines, lightning coded data transmission interface signal relation and spi bus standard class
Seemingly, including enable signal, clock signal and a data position, difference are that spi bus received data bit is two-way, the present invention
The three wire circuit used is one-way transmission.So it will not be repeated.
SpaceWire bus is full-duplex serial bus international standard, it aims at AEROSPACE APPLICATION design, is realized point-to-point logical
The serial data bus of letter.It is illustrated in figure 7 SpaceWire bus interface figure, the coding of data is realized using 4 pairs of differential signals
And transmission transmission rate in this system is set as 200Mbps.Fig. 8 is SpaceWire data packet format.Detailed content refering to
SpaceWire:SERIAL POINT-TO-POINT LINKS international standard, repeats no more herein.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (7)
1. real-time lightning image processing system on a kind of more FPGA collaboration stars, it is characterised in that: including the processing of real-time lightning detection
Module, background image data processing module, lightning signal and background image coding module；
Real-time lightning detection processing module receives the whole frame raw image data of background image data processing module forwarding, and circulation is slow
Adjacent multiframe data are deposited, according to lightning detection algorithm, the adjacent multiframe of multiple FPGA collaboration parallel processing present frames and caching
Data, real-time detection and the lightning signal for identifying present frame complete lightning information and encode and be output to lightning signal and background
Image coding module；
Background image data processing module receives the focal plane raw image data that high-speed serial bus is sent, and is transmitted in real time
Lightning detection processing module, while the raw image data block for specifying region is extracted from present frame according to ground telecommand；
Lightning signal and background image coding module receive the lightning coded data of real-time lightning detection processing module output, simultaneously
The raw image data block for receiving the specified region of background image data processing module output, reconfigures after encoding according to bus
Standard is sent to external data transmission equipment；
The real-time lightning detection processing module include more FPGA parallel processing elements, high-speed circulating memory buffer unit,
Lightning signal coding unit, DCCU data communication control unit；
More FPGA parallel processing elements receive the raw image data of DCCU data communication control unit forwarding, and each FPGA handles one
The lightning image data of subregion；The partition data is stored in high-speed circulating memory buffer unit simultaneously；
The high-speed circulating memory buffer unit is one group of random access memory, using F frame come when carrying out lightning detection, if adopting
It when with low speed random access memory, is made of F low speed random access memory chip, each memory chip saves a frame picture number
According to；When according to high speed random access memory, using bit wide extended mode, table tennis is completed within the pixel time using two groups of memories
Caching, specifically: two groups of DDR2 are used, every group of storage cell will cache the data of the same pixel position of 6 frames,
Bit wide is 72bits after extension；The data of one present frame pixel of every processing just read the data for closing on the same pixel position of 6 frames,
Then by closest to 5 frame pel datas and present frame pixel data be combined into 72bits data be written another group of DDR2 in；
Lightning signal coding unit completes the information coding that more FPGA parallel processing elements detect effective lightning signal；
DCCU data communication control unit receives background image data processing module as the interface with background image data processing module
The frame raw image data, is distributed to each FPGA of more FPGA parallel processing elements by the whole frame raw image data of forwarding,
The lightning coded data for receiving the output of lightning signal coding unit is transmitted to lightning signal and background image coding module.
2. real-time lightning image processing system on a kind of more FPGA collaboration stars according to claim 1, it is characterised in that: press
External data transmission equipment is sent to according to SpaceWire bus format.
3. real-time lightning image processing system on more FPGA collaboration stars according to claim 1, it is characterised in that: described
More FPGA parallel processing elements use N piece SRAM type FPGA, when the original image number for receiving DCCU data communication control unit forwarding
According to when, each SRAM type FPGA handles the lightning image data of a subregion.
4. real-time lightning image processing system on more FPGA collaboration stars according to claim 3, it is characterised in that: described
One picture frame is divided into N number of subregion according to the quantity of FPGA, each SRAM type FPGA handles the lightning image data of a subregion
Specific processing mode are as follows: partition data is stored in the on-chip memory of FPGA first, while the partition data being stored in
A region of high-speed circulating memory buffer unit is made of N number of region, then reads high-speed circulating memory buffer unit
The same position partition data of the preceding N-1 frame of other region storages；Clipping is carried out to pixel amplitude each in the subregion of present frame,
If pixel amplitude is greater than signal limiter setting value, replaces current pixel amplitude to carry out background with signal limiter setting value and comment
Estimate, the no current amplitude that then be used directly carries out the calculating of background evaluation value；According to the same pixel position of former frames and present frame
Amplitude is weighted summation, if current pixel amplitude, which is greater than background evaluation value, so judges that the pixel position there may be sudden strain of a muscle
Electric signal, on the contrary judge that lightning signal is not present in the pixel position；One group of threshold value hierarchical table is set, according to background evaluation value in threshold
Corresponding threshold value is searched in value table, and the amplitude of alternative lightning pixel and background evaluation value are done into the signal value after subtracting and threshold value carries out
Compare, if it is greater than threshold value, then it is assumed that the signal value is exactly the lightning signal amplitude of current pixel position, otherwise it is assumed that the pixel
Lightning does not occur for position, and lightning signal is not present.
5. real-time lightning image processing system on more FPGA collaboration stars according to claim 3, it is characterised in that: described
Lightning signal coding unit detects that effective lightning signal carries out lightning information coding, content for more FPGA parallel processing elements
Including Lightning position, lightning intensity, background evaluation value, threshold value, position check code and lightning time, the lightning time is present frame
Moment.
6. real-time lightning image processing system on more FPGA collaboration stars according to claim 1, it is characterised in that: described
Background image data processing module and lightning signal and background image coding module are realized using anti-fuse FPGA.
7. lightning image processing system carries out image procossing in real time on -6 any more FPGA collaboration stars according to claim 1
Method, it is characterised in that steps are as follows:
1) background image data processing module receives focal plane raw image data, and is transmitted to real-time lightning detection processing module,
The raw image data block for extracting specified region from present frame simultaneously is exported to lightning signal and background image coding module；
2) output is to more after the DCCU data communication control unit of lightning detection processing module receives the image data subregion forwarded in real time
FPGA parallel processing element, high-speed circulating memory buffer unit；High-speed circulating memory buffer unit stores adjacent multiframe
Data are supplied to more FPGA parallel processing elements and use, and more FPGA parallel processing elements are completed detection and calculated with identification lightning signal
It handles and exports effective lightning signal and give lightning signal coding unit；After lightning signal coding unit completes lightning information coding
It exports to DCCU data communication control unit；DCCU data communication control unit exports lightning information coded data to lightning signal and background
Image coding module；
3) lightning signal and background image coding module are total according to SpaceWire by original picture block and lightning information coded data
Line format combination is exported at data packet to external data transmission equipment.
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| "静止气象卫星上的闪电探测系统设计";高松等;《红外技术》;20061130;第2章 * |
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| CN107911702A (en) | 2018-04-13 |
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