CN104378548B - A kind of space multi-spectral imaging instrument video circuit system - Google Patents
A kind of space multi-spectral imaging instrument video circuit system Download PDFInfo
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Abstract
The invention discloses a kind of space multi-spectral imaging instrument video circuit system, including a message processing device and N number of imaging device, imaging device mainly realizes the imaging to target, produces view data.Message processing device is mainly used in controlling each imaging device, receives, encodes the view data of each imaging device, the image of each imaging device is exported according to unified mode.It is orthogonal between each imaging device of the present invention, and message processing device is many-to-one relation.The present invention receives clock signal using PHASE-LOCKED LOOP PLL TECHNIQUE, solves the stationary problem under different imaging device different operating frequencies, while the problem of the unification transmission of different spectral coverage view data is solved by the way of subpackage.The present invention has that the influence of simple in construction, equipment room is small, expansion capability is strong, wide adaptation range the characteristics of, can be widely applied in the video circuit system of space multi-spectral imaging instrument that is constituted jointly by CCD and infrared detector.
Description
Technical field
It is particularly a kind of while comprising ccd detector and infrared detector the present invention relates to a kind of video circuit system
The video circuit system of space multi-spectral imaging instrument.
Background technology
Many spectral coverage optical spectrum imagers systems are one and have gathered space geometry optics, physical optics, spectroscopy, microelectronics
, thermodynamics and space material are in the space optical remote system of one.It can realize the Continuous Observation round the clock to earth's surface,
It is significant to application fields such as environmental monitoring and resource investigations.The imaging spectral coverage of multi-spectral imaging instrument generally includes visible
Spectrum segment, near-infrared spectral coverage, short-wave infrared spectral coverage, medium-wave infrared spectral coverage and LONG WAVE INFRARED spectral coverage.Multiple spectral coverage imagings in the past
Implementation mainly has following two：
A kind of method is that the imaging device of different spectral coverage is designed to independent imager.The instrument possesses independent mirror
Head, detector and data processing equipment.Multiple such instruments are present on satellite platform simultaneously, are imaged respectively during work.This
It is small that the benefit of kind of method is that equipment room is interfered, and design method is simple, but volume, weight and power consumption are all very big, it is impossible to real
Observed while existing multiple spectral coverages are to same target.
Another method is that the light of different spectrum is radiated at into multiple identical detectors using optical filter and spectroscope
On, so as to realize the imaging to different spectrum.This method improves a lot than first method, it is possible to achieve multiple spectral coverages pair
Observed while same target, but be due to that the detector for having used same type (all uses ccd detector or all made
With infrared detector), limited by detector spectral response bandwidth, this method can not wider spectral region (for example from
Visible ray is to LONG WAVE INFRARED) in realize observation.
Therefore, imaging is, it is necessary to design one while multiple spectral coverages being realized in wider spectral region to same object
Plant and be capable of the video circuit system that compatible a variety of detectors work simultaneously.The system design focuses on how avoiding different works
What is produced after making the detector of principle while working interferes, and how synchronous each detector cooperates, how by multichannel figure
As the unified coding of data progress and output.
The content of the invention
The technology of the present invention solves problem：The deficiencies in the prior art are overcome to be regarded there is provided a kind of space multi-spectral imaging instrument
Frequency circuit system, the system architecture is simple, expansion capability is strong, the scope of application is big, equipment room interferes small, solves space many
The problem that spectral coverage imager difference detector is imaged simultaneously.
The present invention technical solution be：A kind of space multi-spectral imaging instrument video circuit system, including an information
Processing equipment and N number of imaging device；Message processing device includes control unit, remote-control romote-sensing processing unit, data encoding and sent
Unit, memory cell and N number of imaging signal processing unit, wherein imaging signal processing unit are corresponded with imaging device；
Remote-control romote-sensing processing unit receives the telecommand of external remote control remote-measuring equipment upload and exported to control unit, institute
Telecommand is stated for imaging device parameter setting instruction；
Control unit is decoded the telecommand received, and by decoded telecommand and reset signal,
Line synchronising signal and clock signal are exported together gives the telecommand corresponding K imaging signal processing unit；It is described to reset letter
Number, line synchronising signal and clock signal produce by control unit according to working condition set in advance；
K imaging signal processing unit is exported after being verified to the instruction of control unit received and signal to correspondence
K imaging device；
Each imaging device is received to be started to start after the reset signal of imaging signal processing unit transmission, and according to remote control
Instruction is configured to the parameter of itself, and each imaging device is by the optical signal of the corresponding spectral coverage received after the completion of parameter setting
It is converted into data image signal；K imaging device is according to the line synchronising signal and clock signal of reception, in each line period
Corresponding imaging signal processing unit is given by obtained data image signal synchronism output；K imaging signal processing unit will connect
The data image signal received is exported to control unit, and the data image signal of reception is temporarily stored in memory cell by control unit
In, when being sent out data image signal, control unit extracts the digitized map of K imaging signal processing unit from memory cell
As signal, the view data for being processed into uniform format is exported by data encoding transmitting element and set to external data transmission
It is standby；
Each imaging signal processing unit reads distant according to predetermined frequency and communication format from corresponding imaging device
Measurement information, and control unit is sent that information to, control unit is led to after being encoded to the telemetry intelligence (TELINT) of each imaging device
Cross remote-control romote-sensing processing unit and export and give external remote control remote-measuring equipment, so that external remote control remote-measuring equipment judges that each imaging device is
No normal work；0<K≤N.
The data image signal of K imaging signal processing unit is processed into the picture number of uniform format by described control unit
According to implementation be：
(2.1) control unit extracts the greatest common divisor P of the data image signal of K imaging signal processing unit output；
(2.2) data image signal that control unit exports each imaging signal processing unit according to the greatest common divisor
Multiple small data packets are divided into, each small data packets are encoded using identical form, containing P view data and work
Journey assistance data；
Wherein engineering assistance data, which is located in the front end of each small data packets, engineering assistance data, is labelled with packet bag
Head, sequence of data packet control information, the running parameter of other equipment, the imaging parameters of this equipment, spectral coverage numbering and spectral coverage row meter
Number.
Each imaging signal processing unit includes data receiver and cache module, remote control and Telemetry data Processing mould
Block, clock and synchronizing signal processing module；
Clock signal and line synchronising signal that clock and synchronizing signal processing module reception control unit are sent, and will receive
Clock signal and line synchronising signal be sent to corresponding imaging device；
The telecommand that remote control and Telemetry data Processing module are sent to control unit is latched, synchronous letter of being then expert at
Number synchronization under, the telecommand is sent to corresponding imaging device according to the communication format of regulation；Remote control and telemetered signal
Processing module reads telemetry intelligence (TELINT) according to predetermined frequency and communication format from corresponding imaging device, then sends out the information
Give control unit；
Data receiver and cache module receive the data image signal of corresponding imaging device output, and send it to control
Unit processed.
The clock signal is obtained by the work master clock frequency dividing of control unit, and synchronizing signal is counted by clock signal and produced
It is raw.
Described control unit receives the telecommand of external remote control remote-measuring equipment upload also by remote-control romote-sensing processing unit
Including row adjust instruction synchronizing cycle, control unit row adjust instruction synchronizing cycle is decoded after by each imaging signal at
Reason unit is exported to corresponding imaging device, to update the line synchronising signal of each imaging device.
Each imaging device includes detector, wave filter, A/D converters, data buffer storage and processing unit, sequential
Control unit, remote-control romote-sensing unit, detector driver element and phaselocked loop and synchronous receiving unit；
Detector driver element provides drive signal under the control of timing control unit for detector, and detector is in the drive
External optical signals are converted into analog electrical signal in the presence of dynamic signal and are transferred to wave filter；Wave filter is by making an uproar in analog signal
Sound is filtered and impedance variations, and obtained analog signal then is conveyed into A/D converters；A/D converters are in SECO
Under the control of unit, change in gain and analog-to-digital conversion are carried out to analog signal, and the data after conversion are sent to data buffer storage
And processing unit；The data of reception are sent to information processing by data buffer storage and processing unit under the control of timing control unit
Equipment；Remote-control romote-sensing unit provides telecommand for timing control unit, and timing control unit response remote-control romote-sensing unit is provided
Telecommand, receive the working state monitoring of remote-control romote-sensing unit；Phaselocked loop and synchronization receiving unit are timing control unit
Line synchronising signal and clock signal are provided.
The imaging device be using CCD linear array detectors and Correlated Double Sampling visual light imaging equipment or use
The infrared imaging device of infrared linear array detector and oversampling technique.
Described information processing equipment and N number of imaging device are powered by independent current source respectively.
The advantage of the present invention compared with prior art is：
(1) present invention is devised a set of can carry out regarding for multi-spectral imaging using ccd detector and infrared detector simultaneously
Frequency circuit system, the system uses unified equipment interface, with good expansion；
(2) synchronous working that the present invention is solved under multiple imaging device different operating frequencies using PHASE-LOCKED LOOP PLL TECHNIQUE is asked
Topic；
(3) present invention proposes the method that data encoding is carried out according to greatest common divisor principle, solves different spectral coverage not
With data volume view data it is unified send the problem of.
Brief description of the drawings
Fig. 1 is space multi-spectral imaging instrument video circuit system block diagram of the invention；
Fig. 2 is imaging signal processing unit system block diagram of the invention；
Fig. 3 is space multi-spectral imaging instrument video circuit clock signal of system process chart of the invention；
Fig. 4 is space multi-spectral imaging instrument video circuit system image data timing diagram of the invention.
Embodiment
The present invention proposes a kind of video circuit system with stronger adaptability and topological ability.The system is using lock
Phase loop technique, solves the problem of multiple imaging device synchronous workings；A kind of data coding mode is devised simultaneously, is solved not
With the data encoding problem of spectral coverage image data amount under a plurality of modes of operation；CCD imagings are solved using one-to-many framework to set
The independent imaging problem of standby and infrared imaging device, the Interface design of each imaging device is into unified form.
Imaging device mainly realizes the imaging to target, produces view data.It is each that message processing device is mainly used in control
Imaging device, receives, encodes the view data of each imaging device, the image of each imaging device is exported according to unified mode.Work
When making, message processing device sends unified clock signal and line synchronising signal to imaging device, and imaging device uses phaselocked loop
Technology receives clock signal.The running parameter of each imaging device is provided by message processing device by bus, and telemetry is by believing
The unified reception of processing equipment is ceased, view data collects in message processing device, then according to the most grand duke of each spectral coverage data volume
Approximate number splits into multiple small data packets, and subpackage is sent.Imaging device is using CCD linear array detectors and Correlated Double Sampling
Visual light imaging equipment uses infrared linear array detector and the infrared imaging device of oversampling technique.
As shown in figure 1, the present invention multi-spectral imaging instrument video circuit system include a message processing device and it is N number of into
As equipment, message processing device and N number of imaging device are powered by independent current source respectively.
Message processing device include control unit, remote-control romote-sensing processing unit, data encoding transmitting element, memory cell with
And N number of imaging signal processing unit；Wherein N number of imaging signal processing unit is corresponded with N number of imaging device；
Each imaging device includes detector, wave filter, A/D converters, data buffer storage and processing unit, remote-control romote-sensing
Unit, phaselocked loop and synchronous receiving unit, timing control unit and detector driver element.
After system electrification work, the control unit of message processing device is produced according to the acquiescence working condition made an appointment
Reset signal, line synchronising signal, clock signal.External remote control remote-measuring equipment is set by remote-control romote-sensing processing unit to information processing
When preparation send telecommand, instruction first passes through remote-control romote-sensing unit and received, and the instruction received is transmitted further to control unit.
Control unit will be instructed and decoded, and be determined to be sent to which or which imaging signal processing unit according to the content of instruction
(generally K, 0<K<=N), then instruction and reset signal, line synchronising signal, clock signal are passed through into K imaging letter together
Number processing unit is transmitted to corresponding imaging device.Imaging device is received after instruction by remote-control romote-sensing unit, is given to sequential
Control unit does corresponding processing.Meanwhile, external remote control remote-measuring equipment is by remote-control romote-sensing processing unit to message processing device
The telecommand of transmission is also possible that row adjust instruction synchronizing cycle.If row adjust instruction synchronizing cycle, then control single
Member is exported to corresponding imaging device after being decoded to row adjust instruction synchronizing cycle by K imaging signal processing unit, with
Update the line synchronising signal of each imaging device；
Exported after the conversion that reset signal, line synchronising signal, clock signal pass through imaging signal processing unit to each into
As the phaselocked loop and synchronous receiving unit of unit.Each imaging device startup optimization after reset signal is received, is imaged after startup
Equipment is started working under the synchronization of clock signal and line synchronising signal.When imaging device works, timing control unit passes through lock
Phase ring synchronous, clock and reset signal with the row that synchronous receiving unit is connected to, produce the driver' s timing for controlling detector, control A/
Driver' s timing and the control data storage of D converters and the control sequential of processing.The driver' s timing of detector will be sent to spy
Device driver element is surveyed, the driver' s timing of AD conversion is sent to A/D converters, and data storage and the control sequential handled are sent to number
According to storage and processing unit.After detector driver element drives input timing, detector is sent to, and control detector work
Make.The picture signal of simulation is exported after detector work.Analog picture signal after filtering device filtering after, into A/D converters.
A/D converters convert analog signals into data signal, data signal enter after data buffer storage and processing unit by coding and
Message processing device is sent to after storage.Imaging signal processing unit in message processing device is received and forwarded after view data
To control unit, the view data that control unit sends each imaging device is temporary in the memory unit.During transmission, control unit
Data are read out of memory cell, data encoding transmitting element is conveyed to.Data encoding transmitting element according to agreement form
View data is encoded, external data transmission equipment is then sent to.
For in terms of remote measurement, each imaging signal processing unit is at predetermined intervals with communication format from corresponding
Telemetry intelligence (TELINT) is read in imaging device, and sends that information to control unit, remote measurement of the control unit to each imaging device
Information is exported by remote-control romote-sensing processing unit after being encoded and gives external remote control remote-measuring equipment, for external remote control remote-measuring equipment
Judge each imaging device whether normal work.
As shown in Fig. 2 each imaging signal processing unit includes data receiver and cache module, remote control and telemetered signal
Processing module, clock and synchronizing signal processing module；
Clock signal and line synchronising signal that clock and synchronizing signal processing module reception control unit are sent, and will receive
Clock signal and line synchronising signal be sent to corresponding imaging device；
The telecommand that remote control and Telemetry data Processing module are sent to control unit is latched, synchronous letter of being then expert at
Number synchronization under, the telecommand is sent to corresponding imaging device according to the communication format of regulation；Remote control and telemetered signal
Processing module reads telemetry intelligence (TELINT) according to predetermined frequency and communication format from corresponding imaging device, then sends out the information
Give control unit；
Data receiver and cache module receive the data image signal of corresponding imaging device output, and send it to control
Unit processed.
The signal transmitted between equipment include be used for synchronous imaging equipment work synchronizing clock signals, line synchronising signal,
Reset signal, the telecommand for controlling imaging device, the telemetry intelligence (TELINT) for detection and the clock for transmitting view data
Signal, data-signal and enable signal.Signal between equipment is transmitted in the form of differential signal.This mode can be with
Strengthen the antijamming capability of signal.Synchronizing clock signals are to be conveyed to imaging device to be used in synchronizer the low of master clock that work
Frequency clock signal.Because system does not transmit the work master clock of high speed directly, so the system can avoid high-frequency clock from propagating
Shi Zaocheng electromagnetic interference.The way of this transmission low speed synchronous clock has been also convenient for the choosing of imaging device work clock simultaneously
Select, make the design of imaging device is not influenceed by other equipment.Line synchronising signal is the signal for identifying the work period, the letter
Number cycle is the row transfer time of ccd detector or infrared detector.Reset signal is used for controlling the reset of each imaging device.
Remote control command signal is used for realizing the transmission of telecommand, and the signal can use bus form, can also use point-to-point transmission
Mode.The agreement of telecommand includes imaging device address information, telecommand information and information of check code.Telemetry intelligence (TELINT) master
To include two parts of telemetry signal and drive signal.Telemetry is by message processing device control, periodically driving imaging
Telemetry-acquisition unit in equipment, exports the various telemetry intelligence (TELINT)s of the equipment.View data output signal include clock signal and
Data-signal.The signal mainly exports the data image signal after imaging, and signal is by imaging device control, each line period output
Once.
The processing of synchronised clock is to ensure one of important step of imaging device independence steady operation.The system is using lock phase
Work master clock on loop technique synchronization distinct device.The handling process of the clock of whole system, row synchronization and reset signal
As shown in Figure 3.Fig. 3 show but control unit by some imaging signal processing unit and with the imaging signal processing unit
The signal interaction process of corresponding imaging device.Wherein, the control unit of message processing device is set including FPGA, information processing
Standby Clock management chip, message processing device VCXO, message processing device temperature control crystal oscillator and the filter of message processing device loop
Ripple device；The phaselocked loop of imaging device and synchronous receiving unit include interface circuit, imaging device Clock management chip, imaging device
VCXO and imaging device loop filter.First, message processing device uses PHASE-LOCKED LOOP PLL TECHNIQUE generation work master clock.Lock
Phase ring function is realized by message processing device Clock management chip.Message processing device Clock management chip includes M, N, P points
Frequency device and phase discriminator and charge pump.These frequency dividers and charge pump are cured in message processing device Clock management chip
In, it can be controlled by control interface.Reference clock use information processing equipment temperature control crystal oscillator, to ensure reference clock
Stability.Message processing device loop filter is made up of RC one-level wave filters.The output of message processing device loop filter
Signal inputs to message processing device VCXO to control output frequency.The clock of message processing device VCXO output
Signal inputs to the FPGA of message processing device after the processing of message processing device Clock management chip.The signal is at information
Manage the work master clock of equipment.The FPGA of message processing device according to the agreement of agreement by master clock divide into lower frequency into
As equipment synchronised clock.The clock realizes level conversion by interface circuit, and imaging device is passed to by coaxial cable.Use
Coaxial cable transmission differential clocks can preferably ensure that signal is not interfered by outside.It is delivered to the differential clocks of imaging device
Single-ended signal is converted into by interface circuit.The signal inputs to imaging device Clock management chip as reference clock.Imaging
Output frequency of the equipment clock managing chip according to the FREQUENCY CONTROL imaging device VCXO of the clock, thus reach it is synchronous into
As equipment VCXO exports the purpose of clock.The clock signal of imaging device VCXO output passes through imaging device clock pipe
The timing control unit on imaging device is conveyed to after the processing for managing chip as work master clock.In whole processing procedure into
It is defeated to ensure as equipment loop filter is used to filter out the high-frequency noise in imaging device Clock management chip output control signal
Entering can keep constant in stable state to the control signal of imaging device VCXO.
The reception of view data and coding are another important steps of whole system.The input and output sequential of view data
Relation is as shown in Figure 4.Multiple imaging devices export the view data of multiple spectral coverages.The quantity of these view data is not quite similar,
But the system view data that needs output format unified has facilitated the reception of external equipment.Highest common divisor is used for this system
The view data that several principles is exported to each imaging device is split.With certain K=N, i.e., N number of imaging device is in outside
The control of remote-control romote-sensing equipment is lower to be participated in exemplified by being imaged, if the view data total amount that imaging device 1 is exported is M1XP, imaging device
The view data total amount of 2 outputs is M2The view data total amount of xP, imaging device N output is MnXP, then message processing device output
View data total amount be (M1+M2......+Mn) xP, wherein P is greatest common divisor.By the data of imaging device 1 during transmission
Split into M1Individual data volume passes Packet for P number, and the data of imaging device 2 are split into M2Individual data volume passes number for P number
According to parcel, imaging device N data are split into MnIndividual data volume passes Packet for P number.Each parcel is removed comprising P figure
As outside data, engineering assistance data is provided with the front end of packet.Engineering assistance data mainly includes packet header, number
According to information such as packet sequence control information, the parameter of forwarding, imaging parameters, spectral coverage mark, the countings of spectral coverage row.These information can be marked
The imaging spectral coverage of view data in will packet, and the relation between each bag data, facilitate the recovery of view data.
The quantity for the imaging device that whole system is included is exported by each imaging device within a line synchronising signal cycle
View data maximum and the maximum of view data that can receive of message handler determine.
Whole system uses star-like connected mode, and each component devices use independent current source.During work, pass through the control of instruction
System, the system can be operated under a variety of different mode of operations.
The clock that message processing device is sent to each imaging device is synchronised clock, is not work clock.Therefore, this when
Clock can be the relatively low clock of same frequency.Each imaging device receives the clock using PHASE-LOCKED LOOP PLL TECHNIQUE, and in the clock
Under control, each synchronous imaging device work clock of itself.
The imaging device comprising the image is numbered in view data after the coding of message processing device output, the spectrum of image
The row technical information of segment number and image.These characteristic informations are by the diagnosis for the recovery of image and failure.
For the interference between each equipment in suppression system, each equipment for constituting system uses itself independent electricity
Source.This way fundamentally separated conduction of the noise signal on electric power network, it is to avoid in system between each equipment
Interfere.
The detector of each imaging device is the component for obtaining external information, is broadly divided into ccd detector and infrared acquisition
Device.Detector needs the accurate work under the driving of specific drive signal.The drive signal of detector is driven single by detector
Member is provided.The unit is responsible for the change for the driver' s timing progress power and signal amplitude for sending timing control unit.Detector
Extraneous optical information is converted into analog electrical signal after being driven and is transferred to wave filter.Wave filter carries out the noise in analog signal
Filtering, is changed to impedance, analog signal then is conveyed into A/D converters.Control of the A/D converters in timing control unit
Under system, change in gain and analog-to-digital conversion are carried out to analog signal, the data after conversion are sent to data buffer storage and processing unit.Number
According to caching and processing unit message processing device is sent the data under the control of timing control unit.Timing control unit is
The core of whole equipment, is responsible for the co-ordination of control detector, A/D converters and data buffer storage and processing unit.Sequential control
Work synchronizing signal, the clock signal of unit processed are provided by phaselocked loop and synchronous receiving unit.Meanwhile, the unit is also responsive to remote control
The telecommand that remote unit is provided, receives the working state monitoring of remote-control romote-sensing unit.
It is orthogonal between each imaging device of the present invention, and message processing device is many-to-one relation.The present invention makes
Clock signal is received with PHASE-LOCKED LOOP PLL TECHNIQUE, the stationary problem under different imaging device different operating frequencies is solved, while using
The mode of subpackage solves the problem of different spectral coverage view data is unified to be sent.There is the present invention simple in construction, equipment room to influence
Small, expansion capability is strong, wide adaptation range the characteristics of, the space that can be widely applied to be constituted jointly by CCD and infrared detector is more
In the video circuit system of spectral coverage imager.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (8)
1. a kind of space multi-spectral imaging instrument video circuit system, it is characterised in that：Including a message processing device and it is N number of into
As equipment；Message processing device include control unit, remote-control romote-sensing processing unit, data encoding transmitting element, memory cell with
And N number of imaging signal processing unit, wherein imaging signal processing unit and imaging device correspond；
Remote-control romote-sensing processing unit receives the telecommand of external remote control remote-measuring equipment upload and exported to control unit, described distant
Control instruction is imaging device parameter setting instruction；
Control unit is decoded the telecommand received, and decoded telecommand and reset signal, row is same
Step signal and clock signal export give the telecommand corresponding K imaging signal processing unit together；The reset signal, OK
Synchronizing signal and clock signal are produced by control unit according to working condition set in advance；
K imaging signal processing unit is exported to corresponding K after being verified to the instruction of control unit received and signal
Individual imaging device；
Each imaging device is received to be started to start after the reset signal of imaging signal processing unit transmission, and according to telecommand
The parameter of itself is configured, each imaging device changes the optical signal of the corresponding spectral coverage received after the completion of parameter setting
Into data image signal；K imaging device is incited somebody to action according to the line synchronising signal and clock signal of reception in each line period
The data image signal synchronism output arrived gives corresponding imaging signal processing unit；K imaging signal processing unit will be received
Data image signal export to control unit, control unit is temporary in the memory unit by the data image signal of reception,
When being sent out data image signal, control unit extracts the digital picture of K imaging signal processing unit from memory cell
Signal, the view data for being processed into uniform format is exported by data encoding transmitting element and gives external data transmission equipment；
Each imaging signal processing unit reads remote measurement letter according to predetermined frequency and communication format from corresponding imaging device
Breath, and send that information to control unit, control unit the telemetry intelligence (TELINT) of each imaging device is encoded after by distant
Control remote measurement processing unit, which is exported, gives external remote control remote-measuring equipment, so that just whether external remote control remote-measuring equipment judge each imaging device
Often work；0<K≤N.
2. a kind of space multi-spectral imaging instrument video circuit system according to claim 1, it is characterised in that：The control
The implementation that the data image signal of K imaging signal processing unit is processed into the view data of uniform format by unit is：
(2.1) control unit extracts the greatest common divisor P of the view data total amount of K imaging signal processing unit output；
(2.2) view data that each imaging signal processing unit is exported is divided into many by control unit according to the greatest common divisor
Individual small data packets, each small data packets are encoded using identical form, containing P view data and engineering supplementary number
According to；
Wherein engineering assistance data, which is located in the front end of each small data packets, engineering assistance data, is labelled with packet header, number
Counted according to packet sequence control information, the running parameter of other equipment, the imaging parameters of this equipment, spectral coverage numbering and spectral coverage row.
3. a kind of space multi-spectral imaging instrument video circuit system according to claim 1, it is characterised in that：It is described each
Imaging signal processing unit includes data receiver and cache module, remote control and Telemetry data Processing module, clock and synchronous letter
Number processing module；
Clock signal and line synchronising signal that clock and synchronizing signal processing module reception control unit are sent, and by reception when
Clock signal and line synchronising signal are sent to corresponding imaging device；
The telecommand that remote control and Telemetry data Processing module are sent to control unit is latched, then in line synchronising signal
Under synchronization, the telecommand is sent to corresponding imaging device according to the communication format of regulation；Remote control and Telemetry data Processing
Module reads telemetry intelligence (TELINT) according to predetermined frequency and communication format from corresponding imaging device, then sends that information to
Control unit；
Data receiver and cache module receive the data image signal of corresponding imaging device output, and it is single to send it to control
Member.
4. a kind of space multi-spectral imaging instrument video circuit system according to claim 3, it is characterised in that：The clock
Signal is obtained by the work master clock frequency dividing of control unit, and synchronizing signal is counted by clock signal and produced.
5. a kind of space multi-spectral imaging instrument video circuit system according to claim 1, it is characterised in that：The control
The telecommand that unit receives the upload of external remote control remote-measuring equipment by remote-control romote-sensing processing unit also includes row and adjusted synchronizing cycle
Whole instruction, control unit is exported to correspondence after being decoded to row adjust instruction synchronizing cycle by each imaging signal processing unit
Imaging device, to update the line synchronising signal of each imaging device.
6. a kind of space multi-spectral imaging instrument video circuit system according to claim 1, it is characterised in that：It is described each
Imaging device is distant including detector, wave filter, A/D converters, data buffer storage and processing unit, timing control unit, remote control
Survey unit, detector driver element and phaselocked loop and synchronous receiving unit；
Detector driver element provides drive signal under the control of timing control unit for detector, and detector is believed in the driving
External optical signals are converted into analog electrical signal in the presence of number and are transferred to wave filter；Wave filter enters the noise in analog signal
Row filtering and impedance variations, are then conveyed to A/D converters by obtained analog signal；A/D converters are in timing control unit
Control under, change in gain and analog-to-digital conversion are carried out to analog signal, and the data after conversion are sent to data buffer storage and place
Manage unit；The data of reception are sent to information processing under the control of timing control unit and set by data buffer storage and processing unit
It is standby；Remote-control romote-sensing unit provides telecommand for timing control unit, monitors the working condition of timing control unit, SECO
The telecommand that unit response remote-control romote-sensing unit is provided；It is same that phaselocked loop and synchronous receiving unit provide row for timing control unit
Walk signal and clock signal.
7. a kind of space multi-spectral imaging instrument video circuit system according to claim 6, it is characterised in that：The imaging
Equipment be using the visual light imaging equipment of CCD linear array detectors and Correlated Double Sampling or using infrared linear array detector and
The infrared imaging device of oversampling technique.
8. a kind of space multi-spectral imaging instrument video circuit system according to claim 1, it is characterised in that：Described information
Processing equipment and N number of imaging device are powered by independent current source respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410602670.0A CN104378548B (en) | 2014-10-31 | 2014-10-31 | A kind of space multi-spectral imaging instrument video circuit system |
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| CN107995460A (en) * | 2017-11-20 | 2018-05-04 | 天津津航技术物理研究所 | A kind of more spectral coverage adaptive image transmission devices based on TDI detectors |
| CN108933894A (en) * | 2018-06-15 | 2018-12-04 | 上海卫星工程研究所 | A kind of distributed arrangement's centralized control type deep space probe engineering monitoring system |
| CN109714545B (en) * | 2018-12-05 | 2021-01-15 | 中国科学院西安光学精密机械研究所 | High-speed hyperspectral imager image processing system |
| CN113820753A (en) * | 2021-09-01 | 2021-12-21 | 中国科学院长春光学精密机械与物理研究所 | Electronic system capable of imaging visible spectrum band and short wave infrared spectrum band simultaneously |
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