CN104378548A - Space multi-spectrum-section imager video circuit system - Google Patents
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Abstract
The invention discloses a space multi-spectrum-section imager video circuit system. The space multi-spectrum-section imager video circuit system comprises an information processing device and N imaging devices; imaging on a target is mainly achieved through the imaging devices to generate image data. The information processing device is mainly used for controlling the imaging devices, receiving and coding the image data of the imaging devices, and outputting images of the imaging devices in a unified mode. According to the space multi-spectrum-section imager video circuit system, the imaging devices are not related and correspond to the information processing device in a many-to-one mode. According to the space multi-spectrum-section imager video circuit system, clock signals are received through the phase-locked loop technology, synchronization of the different imaging devices under different working frequencies is achieved, and meanwhile the aim of unified transmitting of the image data in different spectrum sections is achieved in a subpackage mode. The space multi-spectrum-section imager video circuit system has the advantages of being simple in structure, small in between-device influence, high in expansion capacity and wide in application scope, and can be widely applied to a space multi-spectrum-section imager composed of a CCD and an infrared detector in a combined mode.
Description
Technical field
The present invention relates to a kind of video circuit system, particularly a kind of video circuit system simultaneously comprising the space multi-spectral imaging instrument of ccd detector and Infrared Detectors.
Background technology
Multispectral section of light spectrum image-forming instrument system is one and has gathered space geometry optics, physical optics, spectroscopy, microelectronics, thermodynamics and space material in the space optical remote system of one.It can realize the Continuous Observation round the clock to earth's surface, significant to the application such as environmental monitoring and resource investigation.The imaging spectral coverage of multi-spectral imaging instrument generally includes visible spectrum, near-infrared spectral coverage, short-wave infrared spectral coverage, medium-wave infrared spectral coverage and LONG WAVE INFRARED spectral coverage.The implementation of multiple spectral coverage imaging mainly contained following two kinds in the past:
A kind of method is that the imaging device of different spectral coverage is designed to independently imager.This instrument has independently camera lens, detector and data processing equipment.Multiple such instrument is present on satellite platform simultaneously, imaging respectively during work.It is little that the benefit of this method is that equipment room disturbs mutually, and method for designing is simple, but volume, weight and power consumption are all very large, can not realize multiple spectral coverage and observe while same target.
Another kind method utilizes filter to be radiated on multiple identical detector by the light of different spectrum with spectroscope, thus realize the imaging to different spectrum.This method improves a lot than first method, multiple spectral coverage can be realized observe while same target, but due to the detector (all use ccd detector or all use Infrared Detectors) employing identical type, by the restriction of detector spectral response bandwidth, this method can not realize observation in wider spectral region (such as from visible ray to LONG WAVE INFRARED).
Therefore, multiple spectral coverage to be realized to imaging while same object in wider spectral region, need to design a kind of can the video circuit system that simultaneously works of compatible multiple detector.How multiway images data are carried out unified coding and output by the mutual interference produced after how the focusing on of this system avoids the detector of different operating principle to work simultaneously, how synchronous each detector collaborative work.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of space multi-spectral imaging instrument video circuit system is provided, this system configuration is simple, expansion capability is strong, the scope of application is large, equipment room disturbs little mutually, solves a difficult problem for the different detectors of space multi-spectral imaging instrument imaging simultaneously.
Technical solution of the present invention is: a kind of space multi-spectral imaging instrument video circuit system, comprises a messaging device and N number of imaging device; Messaging device comprises control unit, remote-control romote-sensing processing unit, data encoding transmitting element, memory cell and N number of imaging signal processing unit, wherein imaging signal processing unit and imaging device one_to_one corresponding;
The remote control command that remote-control romote-sensing processing unit reception external remote control remote-measuring equipment is uploaded also exports to control unit, and described remote control command is imaging device parameter setting instruction;
The remote control command received is decoded by control unit, and decoded remote control command and reset signal, line synchronizing signal are exported to K corresponding to this remote control command imaging signal processing unit together with clock signal; Described reset signal, line synchronizing signal and clock signal are produced according to the operating state preset by control unit;
K corresponding imaging device is exported to after K imaging signal processing unit verifies the instruction of the control unit received and signal;
Each imaging device starts after receiving the reset signal of imaging signal processing unit transmission to start, and arrange according to the parameter of remote control command to self, after optimum configurations completes, each imaging device converts the light signal of the corresponding spectral coverage received to data image signal; K imaging device according to the line synchronizing signal received and clock signal, in each line period by the data image signal synchronism output that obtains to corresponding imaging signal processing unit; The data image signal received all is exported to control unit by K imaging signal processing unit, control unit is by temporary in the memory unit for the data image signal received, during outside transmission data image signal, control unit extracts the data image signal of K imaging signal processing unit from memory cell, and the view data being processed into uniform format exports to external data transmission equipment by data encoding transmitting element;
Each imaging signal processing unit reads telemetry intelligence (TELINT) according to predetermined frequency and communication format from the imaging device of correspondence, and this information is sent to control unit, the telemetry intelligence (TELINT) of control unit to each imaging device exports to external remote control remote-measuring equipment by remote-control romote-sensing processing unit after encoding, and judges whether each imaging device normally works for external remote control remote-measuring equipment; 0<K≤N.
The implementation that the data image signal of K imaging signal processing unit is processed into the view data of uniform format by described control unit is:
(2.1) control unit extracts the greatest common divisor P of the data image signal that K imaging signal processing unit exports;
(2.2) data image signal that each imaging signal processing unit exports is divided into multiple small data packets according to this greatest common divisor by control unit, each small data packets uses identical form to encode, all containing P view data and engineering auxiliary data;
Wherein engineering auxiliary data is positioned at the front end of each small data packets, has marked packet header, sequence of data packet control information, the running parameter of other equipment, the imaging parameters of this equipment, spectral coverage numbering and the capable counting of spectral coverage in engineering auxiliary data.
Described each imaging signal processing unit includes data receiver and cache module, remote control and Telemetry data Processing module, clock and synchronizing signal processing module;
The clock signal that clock and synchronizing signal processing module reception control unit send and line synchronizing signal, and the clock signal of reception and line synchronizing signal are sent to corresponding imaging device;
Remote control and Telemetry data Processing module latch the remote control command that control unit sends, then line synchronizing signal synchronous under, this remote control command is sent to corresponding imaging device according to the communication format of regulation; Remote control and Telemetry data Processing module read telemetry intelligence (TELINT) according to predetermined frequency and communication format from the imaging device of correspondence, then this information are sent to control unit;
Data receiver and cache module receive the data image signal that corresponding imaging device exports, and send it to control unit.
Described clock signal is obtained by the work master clock frequency division of control unit, and synchronizing signal is counted by clock signal and produces.
Described control unit also comprises row by the remote control command that remote-control romote-sensing processing unit reception external remote control remote-measuring equipment is uploaded and adjusts instruction synchronizing cycle, control unit exports to corresponding imaging device, to upgrade the line synchronizing signal of each imaging device by each imaging signal processing unit after adjusting instruction decoding synchronizing cycle to this row.
Described each imaging device includes detector, filter, A/D converter, data buffer storage and processing unit, timing control unit, remote-control romote-sensing unit, detector driver element and phase-locked loop and synchronous receiving element;
Detector driver element is for detector provides drive singal under the control of timing control unit, and external optical signals is converted to analog electrical signal and is transferred to filter by detector under the effect of this drive singal; Noise in analog signal is carried out filtering and impedance variation by filter, then the analog signal obtained is flowed to A/D converter; A/D converter, under the control of timing control unit, carries out change in gain and analog-to-digital conversion to analog signal, and the data after conversion are sent to data buffer storage and processing unit; The data of reception are sent to messaging device by data buffer storage and processing unit under the control of timing control unit; Remote-control romote-sensing unit provides remote control command, the remote control command that timing control unit response remote-control romote-sensing unit provides for timing control unit, accepts the working state monitoring of remote-control romote-sensing unit; Phase-locked loop and synchronous receiving element provide line synchronizing signal and clock signal for timing control unit.
Described imaging device is use the visual light imaging equipment of CCD linear array detector and Correlated Double Sampling or use the infrared imaging device of infrared ray array detector and oversampling technique.
Described messaging device and N number of imaging device are powered respectively by independent current source.
The present invention's advantage is compared with prior art:
(1) the present invention devises a set of video circuit system that can simultaneously use ccd detector and Infrared Detectors to carry out multi-spectral imaging, and this system adopts unified equipment room interface, has good expansion;
(2) the synchronous working problem under the present invention utilizes PHASE-LOCKED LOOP PLL TECHNIQUE to solve multiple imaging device different operating frequency;
(3) the present invention proposes the method for carrying out data encoding according to greatest common divisor principle, solve the unified problem sent of view data of different spectral coverage different pieces of information amount.
Accompanying drawing explanation
Fig. 1 is space of the present invention multi-spectral imaging instrument video circuit system block diagram;
Fig. 2 is imaging signal processing unit system block diagram of the present invention;
Fig. 3 is space of the present invention multi-spectral imaging instrument video circuit clock signal of system process chart;
Fig. 4 is space of the present invention multi-spectral imaging instrument video circuit system image data timing diagram.
Embodiment
The present invention proposes a kind of video circuit system with stronger adaptive capacity and topological ability.This system adopts PHASE-LOCKED LOOP PLL TECHNIQUE, solves a difficult problem for multiple imaging device synchronous working; Devise a kind of data coding mode simultaneously, solve different spectral coverage image data amount data encoding problem under a plurality of modes of operation; Utilize the framework of one-to-many to solve the independent imaging problem of CCD imaging device and infrared imaging device, the Interface design of each imaging device becomes unified form.
Imaging device mainly realizes the imaging to target, produces view data.Messaging device is mainly used in controlling each imaging device, receives, the view data of each imaging device of encoding, and exports the image of each imaging device according to unified mode.During work, messaging device sends unified clock signal and line synchronizing signal to imaging device, and imaging device uses PHASE-LOCKED LOOP PLL TECHNIQUE receive clock signal.The running parameter of each imaging device is provided by bus by messaging device, telemetry receives by messaging device is unified, view data gathers in messaging device, then splits into multiple small data packets according to the greatest common divisor of each spectral coverage data volume, and subpackage sends.Imaging device is use the visual light imaging equipment of CCD linear array detector and Correlated Double Sampling or use the infrared imaging device of infrared ray array detector and oversampling technique.
As shown in Figure 1, multi-spectral imaging instrument video circuit system of the present invention comprises a messaging device and N number of imaging device, and messaging device and N number of imaging device are powered respectively by independent current source.
Messaging device comprises control unit, remote-control romote-sensing processing unit, data encoding transmitting element, memory cell and N number of imaging signal processing unit; Wherein N number of imaging signal processing unit and N number of imaging device one_to_one corresponding;
Each imaging device includes detector, filter, A/D converter, data buffer storage and processing unit, remote-control romote-sensing unit, phase-locked loop and synchronous receiving element, timing control unit and detector driver element.
After system electrification work, the control unit of messaging device produces reset signal, line synchronizing signal, clock signal according to the acquiescence operating state of making an appointment.When external remote control remote-measuring equipment sends remote control command by remote-control romote-sensing processing unit to messaging device, instruction is first received by remote-control romote-sensing unit, and the instruction received is transferred to control unit again.Instruction is decoded by control unit, which which determine to send to or imaging signal processing unit (to be generally K according to the content of instruction, 0<K<=N), then by instruction and reset signal, line synchronizing signal, clock signal corresponding imaging device is transmitted to by K imaging signal processing unit together.After imaging device receives instruction by remote-control romote-sensing unit, be given to timing control unit and do corresponding process.Meanwhile, external remote control remote-measuring equipment also may comprise row by remote-control romote-sensing processing unit to the remote control command that messaging device sends and adjusts instruction synchronizing cycle.If row adjusts instruction synchronizing cycle, then control unit exports to corresponding imaging device, to upgrade the line synchronizing signal of each imaging device by K imaging signal processing unit after adjusting instruction decoding synchronizing cycle to this row;
The phase-locked loop of each image-generating unit and synchronous receiving element is exported to after the conversion by imaging signal processing unit of reset signal, line synchronizing signal, clock signal.Each imaging device startup optimization after receiving reset signal, after starting imaging device clock signal and line synchronizing signal synchronous under start working.During imaging device work, the row that timing control unit is received by phase-locked loop and synchronous receiving element is synchronous, clock and reset signal, produces the driver' s timing, the driver' s timing of control A/D converter and the Control timing sequence of control data Storage and Processing that control detector.The driver' s timing of detector will send to detector driver element, and the driver' s timing of AD conversion sends to A/D converter, and the Control timing sequence of data Storage and Processing sends to data Storage and Processing unit.Detector driver element sends to detector, and controls detector work after being driven by input timing.The picture signal of simulation is exported after detector work.Analog picture signal, after filtering after device filtering, enters A/D converter.Analog signal is converted to digital signal by A/D converter, by encoding and sending to messaging device after storing after digital signal enters data buffer storage and processing unit.Be transmitted to control unit after imaging signal processing unit in messaging device receives view data, the view data that each imaging device is sent by control unit is temporary in the memory unit.During transmission, data read by control unit in memory cell, flow to data encoding transmitting element.Data encoding transmitting element is encoded to view data according to the form of agreement, then sends to external data transmission equipment.
For remote measurement aspect, each imaging signal processing unit reads telemetry intelligence (TELINT) according to predetermined time interval and communication format from the imaging device of correspondence, and this information is sent to control unit, the telemetry intelligence (TELINT) of control unit to each imaging device exports to external remote control remote-measuring equipment by remote-control romote-sensing processing unit after encoding, and judges whether each imaging device normally works for external remote control remote-measuring equipment.
As shown in Figure 2, each imaging signal processing unit includes data receiver and cache module, remote control and Telemetry data Processing module, clock and synchronizing signal processing module;
The clock signal that clock and synchronizing signal processing module reception control unit send and line synchronizing signal, and the clock signal of reception and line synchronizing signal are sent to corresponding imaging device;
Remote control and Telemetry data Processing module latch the remote control command that control unit sends, then line synchronizing signal synchronous under, this remote control command is sent to corresponding imaging device according to the communication format of regulation; Remote control and Telemetry data Processing module read telemetry intelligence (TELINT) according to predetermined frequency and communication format from the imaging device of correspondence, then this information are sent to control unit;
Data receiver and cache module receive the data image signal that corresponding imaging device exports, and send it to control unit.
The signal transmitted between equipment comprise for the synchronizing clock signals of synchronous imaging equipment work, line synchronizing signal, reset signal, for control imaging device remote control command, for the telemetry intelligence (TELINT) that detects and the clock signal transmitting view data, data-signal and enable signal.Signal between equipment adopts the form of differential signal to transmit.This mode can strengthen the antijamming capability of signal.Synchronizing clock signals flows to the low-frequency clock signal of imaging device for the master clock that works in synchronizer.Because system does not directly transmit work master clock at a high speed, so the electromagnetic interference caused when this system can avoid high-frequency clock to propagate.The way of this transmission low speed synchronous clock also facilitates the selection of imaging device work clock simultaneously, makes the design of imaging device by the impact of other equipment.Line synchronizing signal is used to identify the signal of work period, and this signal period is row transfer time of ccd detector or Infrared Detectors.Reset signal is used for controlling the reset of each imaging device.Remote control command signal is used for realizing the transmission of remote control command, and this signal can adopt bus form, also can adopt point-to-point transmission means.The agreement of remote control command comprises imaging device address information, remote control command information and information of check code.Telemetry intelligence (TELINT) mainly comprises telemetry signal and drive singal two parts.Telemetry is controlled by messaging device, regularly drives the telemetry-acquisition unit on imaging device, exports the various telemetry intelligence (TELINT)s of this equipment.View data output signal comprises clock signal and data-signal.This signal is mainly output into the data image signal after picture, and signal is controlled by imaging device, and each line period exports once.
The process of synchronised clock is one of important step ensureing imaging device independence steady operation.Native system adopts the work master clock on the synchronous distinct device of PHASE-LOCKED LOOP PLL TECHNIQUE.The handling process of the synchronous and reset signal of the clock of whole system, row as shown in Figure 3.Fig. 3 show but the signal reciprocal process of control unit by certain imaging signal processing unit and the imaging device corresponding with this imaging signal processing unit.Wherein, the control unit of messaging device comprises FPGA, messaging device Clock management chip, messaging device VCXO, messaging device temperature control crystal oscillator and messaging device loop filter; The phase-locked loop of imaging device and synchronous receiving element comprise interface circuit, imaging device Clock management chip, imaging device VCXO and imaging device loop filter.First, messaging device adopts PHASE-LOCKED LOOP PLL TECHNIQUE generation work master clock.Phase locked looped function is realized by messaging device Clock management chip.Messaging device Clock management chip comprises M, N, P frequency divider and phase discriminator and charge pump.These frequency dividers and charge pump are all cured in messaging device Clock management chip, control by control interface.Reference clock uses messaging device temperature control crystal oscillator, in order to ensure the stability of reference clock.Messaging device loop filter is made up of RC one-level filter.The signal that messaging device loop filter exports inputs to messaging device VCXO in order to control output frequency.The clock signal that messaging device VCXO exports inputs to the FPGA of messaging device after the process of messaging device Clock management chip.This signal is the work master clock of messaging device.Master clock frequency division is become the imaging device synchronised clock of lower frequency by the FPGA agreement according to a preconcerted arrangement of messaging device.This clock realizes level conversion by interface circuit, passes to imaging device by coaxial cable.Use coaxial cable to transmit differential clocks and better can ensure signal not by extraneous interference.The differential clocks being delivered to imaging device converts single-ended signal to through interface circuit.This signal inputs to imaging device Clock management chip as with reference to clock.Imaging device Clock management chip according to the output frequency of the FREQUENCY CONTROL imaging device VCXO of this clock, thus reaches the object of synchronous imaging equipment VCXO output clock.The clock signal that imaging device VCXO exports flows to timing control unit on imaging device as work master clock after the process of imaging device Clock management chip.In whole processing procedure, imaging device loop filter exports the high-frequency noise in control signal for filtering imaging device Clock management chip, can remain unchanged when stable state with the control signal ensureing to input to imaging device VCXO.
The reception of view data and coding are another important steps of whole system.The input and output sequential relationship of view data as shown in Figure 4.Multiple imaging device exports the view data of multiple spectral coverage.The quantity of these view data is not quite similar, but the reception of the system view data party B just external equipment that needs output format unified.Native system adopts the principle of greatest common divisor to split the view data that each imaging device exports for this reason.With certain K=N, namely N number of imaging device all participates in being imaged as example, if the view data total amount that imaging device 1 exports is M under outside remote-control romote-sensing equipment controls
1xP, the view data total amount that imaging device 2 exports is M
2the view data total amount that xP, imaging device N export is M
nxP, then the total amount of the view data of messaging device output is (M
1+ M
2...+M
n) xP, wherein P is greatest common divisor.During transmission, the Data Division of imaging device 1 is become M
1individual data volume is that the number of P passes Packet, and the Data Division of imaging device 2 is become M
2individual data volume is that the number of P passes Packet, and the Data Division of imaging device N is become M
nindividual data volume is that the number of P passes Packet.Each parcel, except comprising P view data, is provided with engineering auxiliary data in the front end of packet.Engineering auxiliary data mainly comprises the information such as parameter, imaging parameters, spectral coverage mark, the capable counting of spectral coverage of packet header, sequence of data packet control information, forwarding.These information can the imaging spectral coverage of view data in flag data bag, and the relation between each bag data, facilitates the recovery of view data.
The maximum of the view data that the maximum of the view data that the quantity of the imaging device that whole system comprises is exported within a line synchronizing signal cycle by each imaging device and message handler can receive determines.
Whole system adopts star-like connected mode, and each component devices uses independent current source.During work, by the control of instruction, this system being operable is under multiple different mode of operation.
Messaging device sends to the clock of each imaging device to be synchronised clock, is not work clock.Therefore, this clock can be the clock that same frequency is lower.Each imaging device uses PHASE-LOCKED LOOP PLL TECHNIQUE to receive this clock, and under the control of this clock, the synchronously work clock of each imaging device self.
The imaging device numbering of this image is comprised, the spectral coverage numbering of image and the row technical information of image in view data after the coding that messaging device exports.These characteristic informations are by the diagnosis of the recovery and fault that are used for image.
In order to the interference between equipment each in suppression system, each equipment of composition system all uses self independently power supply.This way has fundamentally cut off the conduction of noise signal on electric power network, avoids the mutual interference in system between each equipment.
The detector of each imaging device is the assembly obtaining external information, is mainly divided into ccd detector and Infrared Detectors.Detector needs accurate work under the driving of specific drive singal.The drive singal of detector is provided by detector driver element.This unit is responsible for the change driver' s timing that timing control unit sends being carried out power and signal amplitude.After detector is driven, ambient light information is converted to analog electrical signal and is transferred to filter.Noise in analog signal is carried out filtering by filter, changes impedance, then analog signal is flowed to A/D converter.A/D converter, under the control of timing control unit, carries out change in gain and analog-to-digital conversion to analog signal, and the data after conversion send to data buffer storage and processing unit.Data buffer storage and processing unit send the data to messaging device under the control of timing control unit.Timing control unit is the core of whole equipment, is responsible for the co-ordination controlling detector, A/D converter and data buffer storage and processing unit.Work synchronizing signal, the clock signal of timing control unit are provided by phase-locked loop and synchronous receiving element.Meanwhile, this unit also responds the remote control command that remote-control romote-sensing unit provides, and accepts the working state monitoring of remote-control romote-sensing unit.
Uncorrelated mutually between each imaging device of the present invention, and messaging device is many-to-one relation.The present invention uses PHASE-LOCKED LOOP PLL TECHNIQUE receive clock signal, solves the stationary problem under different imaging device different operating frequency, adopts the mode of subpackage to solve the unified problem sent of different spectral coverage view data simultaneously.The present invention has that structure is simple, equipment room impact is little, expansion capability strong, the feature of wide accommodation, can be widely used in the video circuit system of the space multi-spectral imaging instrument constituted jointly by CCD and Infrared Detectors.
The content be not described in detail in specification of the present invention belongs to the known technology of those skilled in the art.
Claims (8)
1. a space multi-spectral imaging instrument video circuit system, is characterized in that: comprise a messaging device and N number of imaging device; Messaging device comprises control unit, remote-control romote-sensing processing unit, data encoding transmitting element, memory cell and N number of imaging signal processing unit, wherein imaging signal processing unit and imaging device one_to_one corresponding;
The remote control command that remote-control romote-sensing processing unit reception external remote control remote-measuring equipment is uploaded also exports to control unit, and described remote control command is imaging device parameter setting instruction;
The remote control command received is decoded by control unit, and decoded remote control command and reset signal, line synchronizing signal are exported to K corresponding to this remote control command imaging signal processing unit together with clock signal; Described reset signal, line synchronizing signal and clock signal are produced according to the operating state preset by control unit;
K corresponding imaging device is exported to after K imaging signal processing unit verifies the instruction of the control unit received and signal;
Each imaging device starts after receiving the reset signal of imaging signal processing unit transmission to start, and arrange according to the parameter of remote control command to self, after optimum configurations completes, each imaging device converts the light signal of the corresponding spectral coverage received to data image signal; K imaging device according to the line synchronizing signal received and clock signal, in each line period by the data image signal synchronism output that obtains to corresponding imaging signal processing unit; The data image signal received all is exported to control unit by K imaging signal processing unit, control unit is by temporary in the memory unit for the data image signal received, during outside transmission data image signal, control unit extracts the data image signal of K imaging signal processing unit from memory cell, and the view data being processed into uniform format exports to external data transmission equipment by data encoding transmitting element;
Each imaging signal processing unit reads telemetry intelligence (TELINT) according to predetermined frequency and communication format from the imaging device of correspondence, and this information is sent to control unit, the telemetry intelligence (TELINT) of control unit to each imaging device exports to external remote control remote-measuring equipment by remote-control romote-sensing processing unit after encoding, and judges whether each imaging device normally works for external remote control remote-measuring equipment; 0<K≤N.
2. a kind of space according to claim 1 multi-spectral imaging instrument video circuit system, is characterized in that: the implementation that the data image signal of K imaging signal processing unit is processed into the view data of uniform format by described control unit is:
(2.1) control unit extracts the greatest common divisor P of the data image signal that K imaging signal processing unit exports;
(2.2) data image signal that each imaging signal processing unit exports is divided into multiple small data packets according to this greatest common divisor by control unit, each small data packets uses identical form to encode, all containing P view data and engineering auxiliary data;
Wherein engineering auxiliary data is positioned at the front end of each small data packets, has marked packet header, sequence of data packet control information, the running parameter of other equipment, the imaging parameters of this equipment, spectral coverage numbering and the capable counting of spectral coverage in engineering auxiliary data.
3. a kind of space according to claim 1 multi-spectral imaging instrument video circuit system, is characterized in that: described each imaging signal processing unit includes data receiver and cache module, remote control and Telemetry data Processing module, clock and synchronizing signal processing module;
The clock signal that clock and synchronizing signal processing module reception control unit send and line synchronizing signal, and the clock signal of reception and line synchronizing signal are sent to corresponding imaging device;
Remote control and Telemetry data Processing module latch the remote control command that control unit sends, then line synchronizing signal synchronous under, this remote control command is sent to corresponding imaging device according to the communication format of regulation; Remote control and Telemetry data Processing module read telemetry intelligence (TELINT) according to predetermined frequency and communication format from the imaging device of correspondence, then this information are sent to control unit;
Data receiver and cache module receive the data image signal that corresponding imaging device exports, and send it to control unit.
4. a kind of space according to claim 3 multi-spectral imaging instrument video circuit system, is characterized in that: described clock signal is obtained by the work master clock frequency division of control unit, and synchronizing signal is counted by clock signal and produces.
5. a kind of space according to claim 1 multi-spectral imaging instrument video circuit system, it is characterized in that: described control unit also comprises row by the remote control command that remote-control romote-sensing processing unit reception external remote control remote-measuring equipment is uploaded and adjusts instruction synchronizing cycle, control unit exports to corresponding imaging device, to upgrade the line synchronizing signal of each imaging device by each imaging signal processing unit after adjusting instruction decoding synchronizing cycle to this row.
6. a kind of space according to claim 1 multi-spectral imaging instrument video circuit system, is characterized in that: described each imaging device includes detector, filter, A/D converter, data buffer storage and processing unit, timing control unit, remote-control romote-sensing unit, detector driver element and phase-locked loop and synchronous receiving element;
Detector driver element is for detector provides drive singal under the control of timing control unit, and external optical signals is converted to analog electrical signal and is transferred to filter by detector under the effect of this drive singal; Noise in analog signal is carried out filtering and impedance variation by filter, then the analog signal obtained is flowed to A/D converter; A/D converter, under the control of timing control unit, carries out change in gain and analog-to-digital conversion to analog signal, and the data after conversion are sent to data buffer storage and processing unit; The data of reception are sent to messaging device by data buffer storage and processing unit under the control of timing control unit; Remote-control romote-sensing unit provides remote control command, the remote control command that timing control unit response remote-control romote-sensing unit provides for timing control unit, accepts the working state monitoring of remote-control romote-sensing unit; Phase-locked loop and synchronous receiving element provide line synchronizing signal and clock signal for timing control unit.
7. a kind of space according to claim 6 multi-spectral imaging instrument video circuit system, is characterized in that: described imaging device is use the visual light imaging equipment of CCD linear array detector and Correlated Double Sampling or use the infrared imaging device of infrared ray array detector and oversampling technique.
8. a kind of space according to claim 1 multi-spectral imaging instrument video circuit system, is characterized in that: described messaging device and N number of imaging device are powered respectively by independent current source.
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| 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 |
| CN109714545A (en) * | 2018-12-05 | 2019-05-03 | 中国科学院西安光学精密机械研究所 | A kind of 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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| 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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