CN107197123A - The camera system and control method of a kind of gazing type space camera timesharing multispectral imaging control - Google Patents
The camera system and control method of a kind of gazing type space camera timesharing multispectral imaging control Download PDFInfo
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- CN107197123A CN107197123A CN201710312811.9A CN201710312811A CN107197123A CN 107197123 A CN107197123 A CN 107197123A CN 201710312811 A CN201710312811 A CN 201710312811A CN 107197123 A CN107197123 A CN 107197123A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
Abstract
The camera system and control method of a kind of gazing type space camera timesharing multispectral imaging control, the imaging of simple spectrum section single, simple spectrum section continuous imaging, the imaging of full spectral coverage single, the basic imaging pattern of four kinds of full spectral coverage continuous imaging are set in the gazing type space camera with swept-band filtering apparatus, for coordinating satellite platform to realize a variety of earth observation patterns.The swept-band filtering apparatus of camera is controlled in camera using a controller, focal plane subassembly, signal processing apparatus realizes these four basic working modes according to the workflow of setting, the inventive method is compared with art methods, camera autonomous control ability is strong, control device is few needed for system, mechanism action and imaging control synchronization accuracy are high, it is imaged control model succinct, it is versatile and flexible, covering is comprehensive, it simple and reliable can be combined with the matching of satellite platform mode of operation and realize polytype earth observation task, it can be used as the most basic timesharing multispectral imaging control method of quiet rail gazing type space camera.
Description
Technical field
The present invention relates to a kind of camera system of gazing type space camera timesharing multispectral imaging control and control method, category
In aerospace optical remote sensing technical field.
Background technology
Gazing type space camera is used for geostationary orbit earth observation, and geostationary orbit stares camera because its rail
The features such as monitoring range that road feature is brought is wide, temporal resolution is high can be mitigation, meteorology, earthquake, forestry, ocean, state
The application of multiple industries such as soil, water conservancy provides remotely-sensed data service, has turned into domestic and international Future Earth Observation technology at present and has developed
Important directions.
The characteristics of geostationary orbit earth observation satellite has multi-user, multipurpose, can perform multitask parallel, according to
Observation mission is different, and satellite can be divided into staring imaging pattern, regional imaging pattern, motor-driven inspection pattern etc., gazing type space phase
Machine is related to a variety of imaging patterns such as single imaging, continuous imaging, the imaging of full spectral coverage, specified spectral coverage imaging, and be imaged all needs each time
Imaging parameters are adjusted, synchronous control accuracy demand is also higher.Existing space camera mode of operation is generally satellite Star Service or number
Pipe subsystem is directly controlled by communication bus, and space camera is designed as the mode of operation of instruction parsing execution formula, and camera is autonomous
Control ability is weak, and the mode of operation equipment room synchronous control accuracy of bus marco execution formula is low, even if camera design has
Certain Row control ability, but its control method has the shortcomings that single pattern, control flexibility and diversity are poor.
For the complicated parallel multi-task observation requirementses of realization, it is necessary to a kind of succinct and complete gazing type space camera timesharing
Multispectral imaging control method, all kinds observation mission can be realized by being engaged with satellite platform mode of operation.
The content of the invention
The technical problem to be solved in the present invention is：Overcome prior art not enough, defended for geostationary orbit earth observation
Star has multi-user, multipurpose, can perform multitask parallel, the characteristics of mode of operation is complicated, proposes a kind of quiet available for the earth
Only track stares the timesharing multispectral imaging control method of camera, and the system is coordinated using four kinds of succinct basic imaging patterns to be defended
Star system, can complete polytype earth observation task with high efficiency.
The technical scheme is that：A kind of camera system of gazing type space camera timesharing multispectral imaging control, bag
Include：Optical lens (1), swept-band light-dividing device (2), focal plane subassembly (3), signal processing apparatus (4), controller (5)；
Swept-band light-dividing device (2) is placed between optical lens (1) and focal plane subassembly (3), for be selected to as
Wave band；
Information from target is focused at focal plane subassembly by optical lens (1) by swept-band filtering apparatus (2) incidence
(3) optical image is formed on；
Focal plane subassembly (3) carries out opto-electronic conversion to optical image and signal is read, and will come from the incident light of optical lens (1)
Signal is converted to electric signal, and the electric signal is carried out after sampling response, exports and gives signal processing apparatus (4)；
Signal processing apparatus (4) focusing plane component (3) generation electric signal be amplified, filter successively, analog-to-digital conversion with
And exported after coding；
Controller (5) can control swept-band filtering apparatus (2), focal plane subassembly (3) and signal processing apparatus (4), with
It is implemented as control.
Imaging control can set four kinds of basic image forming job patterns, be simple spectrum section single imaging pattern (6), simple spectrum respectively
Section continuous imaging mode (7), full spectral coverage single imaging pattern (8), full spectral coverage continuous imaging mode (9).
A kind of gazing type space camera timesharing multispectral imaging control method, can realize simple spectrum section single imaging pattern
(6), step is as follows：
(1) controller (5) is received after spectral deploying bus command, and swept-band light-dividing device (2) is controlled according to the instruction
Specified spectral coverage optical filter is inserted in light path, treats that the optical filter that driving stepper motor is specified is arrived into i.e. mechanism action in light path
Behind position, simple spectrum section single imaging pattern bus command is waited；
(2) after simple spectrum section single imaging pattern bus command is reached, during the integration that controller (5) caches inside in advance
Between, i.e., imaging parameters deliver to signal processing apparatus (4) including the camera exposure time；
(3) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging is controlled, a simple spectrum section single Irnaging procedures are so far completed；
After (4) simple spectrum section single Irnaging procedures terminate, controller (5) is automatically into standby mode.
A kind of gazing type space camera timesharing multispectral imaging control method, can realize simple spectrum section continuous imaging mode
(7), step is as follows：
(1) controller (5) is received after spectral deploying bus command, and swept-band light-dividing device (2) is controlled according to the instruction
Specified spectral coverage optical filter is inserted in light path, treats that the optical filter that driving stepper motor is specified is arrived into i.e. mechanism action in light path
Behind position, simple spectrum section continuous imaging mode bus command is waited, after simple spectrum section continuous imaging mode bus command is reached, is walked
Suddenly (2)；
(2) time of integration that controller (5) caches inside in advance, i.e. imaging parameters deliver to letter including the camera exposure time
Number processing unit (4)；
(3) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging is controlled, then controller (5) delay waits until that the imaging cycle of a setting is completed；
(4) return to step (2), i.e., carry out simple spectrum section continuous imaging with the imaging cycle of setting, until being connected to stopping imaging
After instruction, stop imaging.
A kind of gazing type space camera timesharing multispectral imaging control method, can realize full spectral coverage single imaging pattern
(8), step is as follows：
(1) controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial spectral coverage optical filter, i.e.,
First enter light path optical filter zero-bit, zero sought every time rotated according to the direction of same fixation and seek zero, make swept-band
The initial optical filter for sending zero signal is found in each spectral coverage optical filter counterclockwise rotation in light-dividing device (2), if step
Stepper motor, which rotates to an angle, finds initial spectral coverage optical filter, then stop motion, and zero success is sought in judgement；If stepper motor rotates
One circle is still not detected by zero signal, then stop motion using the spectral coverage optical filter in current light path as initial optical filter, that is, is set
Zero-bit optical filter is set to, is sought after zero end, controller (5) waits control instruction；When full spectral coverage single imaging pattern bus command
After arrival, step (2) is carried out
(2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
(3) time of integration that controller (5) caches inside in advance, i.e. imaging parameters deliver to letter including the camera exposure time
Number processing unit (4)；
(4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4), is controlled by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging processed, then controller (5) delay waits until that the imaging cycle of a setting is completed；
(5) stepper motor of controller (5) control swept-band light-dividing device will insert light path to next spectral coverage optical filter
In, return to step (3), until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one, is completed
The full spectral coverage single image forming job of all spectral coverages, then controller, which enters, waits imaging pattern.
A kind of gazing type space camera timesharing multispectral imaging control method, can realize full spectral coverage continuous imaging mode
(9), step is as follows：
(1) controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial spectral coverage optical filter, i.e.,
First enter light path optical filter zero-bit, zero sought every time rotated according to the direction of same fixation and seek zero, make swept-band
The initial optical filter for sending zero signal is found in each spectral coverage optical filter counterclockwise rotation in light-dividing device (2), if step
Stepper motor, which rotates to an angle, finds initial spectral coverage optical filter, then stop motion, and zero success is sought in judgement；If stepper motor rotates
One circle is still not detected by zero signal, then stop motion using the spectral coverage optical filter in current light path as initial optical filter, that is, is set
Zero-bit optical filter is set to, is sought after zero end, controller (5) waits control instruction；Reached when full spectral coverage continuous imaging mode is instructed
Afterwards, step (2) is carried out
(2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
(3) time of integration that controller (5) caches inside in advance, i.e. imaging parameters deliver to letter including the camera exposure time
Number processing unit (4)；
(4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4), is controlled by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging processed, then controller (5) delay waits until that the imaging cycle of a setting is completed；
(5) stepper motor of controller (5) control swept-band light-dividing device will insert light path to next spectral coverage optical filter
In, return to step (3), until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one, is completed
The full spectral coverage single image forming job of all spectral coverages；
(6) return to step (2), repeat step (2)~(5), until being connected to after stopping imaging instruction, stop imaging.
The advantage of the present invention compared with prior art is：
(1) present invention uses simple spectrum section single imaging pattern, simple spectrum section continuous imaging mode, full spectral coverage single imaging mould
The succinct basic model of formula, four kinds of full spectral coverage continuous imaging mode coordinates satellite system, can complete polytype to see over the ground
Survey task, it is simple to operate, flexible, efficient.
(2) camera autonomous control ability of the invention is strong, and control device integrated level is high.
(3) camera system compatibility of the invention is good, convenient to be matched with the multiple-working mode of satellite platform.
(4) system and method for the invention realize that many equipment are synchronous using hardware synchronization control signal interface, imaging control
Precision is high.
(5) control mode of the invention is succinct, versatile and flexible, and functional coverage comprehensively, can be used as space gazing type camera base
This control method is used.
Brief description of the drawings
Fig. 1 is the control method system theory of constitution schematic diagram of the use of the present invention；
The simple spectrum section single imaging pattern working timing figure that Fig. 2 uses for the present invention；
The simple spectrum section continuous imaging mode working timing figure that Fig. 3 uses for the present invention；
The full spectral coverage single imaging pattern working timing figure that Fig. 4 uses for the present invention；
The full spectral coverage continuous imaging mode working timing figure that Fig. 5 uses for the present invention；
The simple spectrum section single imaging pattern control logic flow chart that Fig. 6 uses for the present invention；
The simple spectrum section continuous imaging mode control logic flow chart that Fig. 7 uses for the present invention；
The full spectral coverage single imaging pattern control logic flow chart that Fig. 8 uses for the present invention；
The full spectral coverage continuous imaging mode control logic flow chart that Fig. 9 uses for the present invention；
Figure 10 implements illustration for the full spectral coverage continuous imaging mode work schedule that the present invention is used；
Figure 11 is that the changeable work schedule of currently preferred pattern implements illustration.
Embodiment
The present invention basic ideas be：Propose a kind of camera system of gazing type space camera timesharing multispectral imaging control
And control method, the imaging of simple spectrum section single, simple spectrum section are set in the gazing type space camera with swept-band filtering apparatus
Continuous imaging, the imaging of full spectral coverage single, the basic imaging pattern of four kinds of full spectral coverage continuous imaging are more for coordinating satellite platform to realize
Plant earth observation pattern.Controlled in camera using a controller at the swept-band filtering apparatus, focal plane subassembly, signal of camera
Reason device realize these four basic working modes according to the workflow of setting, the inventive method compared with art methods,
Camera autonomous control ability is strong, and control device is few needed for system, and mechanism action and imaging control synchronization accuracy are high, imaging control mould
Formula is succinct, versatile and flexible, covering is comprehensive, simple and reliable can be combined with the matching of satellite platform mode of operation and realize polytype
Earth observation task, can be used as the most basic timesharing multispectral imaging control method of quiet rail gazing type space camera.
Set the imaging of simple spectrum section single, simple spectrum section continuous in the gazing type space camera with swept-band filtering apparatus
Imaging, the imaging of full spectral coverage single, the basic imaging pattern of four kinds of full spectral coverage continuous imaging, it is a variety of right for coordinating satellite platform to realize
Ground observation mode.Swept-band filtering apparatus, focal plane subassembly, the signal processing device of camera are controlled in camera using a controller
Put and realize these four basic working modes according to the workflow of setting.The control flow of setting is respectively：Simple spectrum section single into
As control flow (6), simple spectrum section continuous imaging control flow (7), full spectral coverage single imaging control flow (8), full spectral coverage are continuous
It is imaged control flow (9)；
Optical lens (1) converges in the light beam from land object information on visible ray focal plane subassembly (3)；
The optical filter that swept-band light-dividing device (2) is used to switch different spectral coverage enters in light path, makes with different spectral coverage
The light of scope is passed through, and realizes spectral coverage selection function；
Light focal plane subassembly (3) receives the incoming signal from optical lens (1), and carries out sampling sound to detection echo signal
Should after be converted to electric signal and input to signal processing apparatus (4)；
The electric signal that focal plane subassembly is generated is amplified, filtered by signal processing apparatus (4), analog-to-digital conversion and coding after
Output；Controller (5) control swept-band filtering apparatus, focal plane subassembly and signal processing apparatus, setting imaging parameters, realize four
Plant basic imaging control model.
Below in conjunction with the drawings and specific embodiments to the gazing type space camera timesharing multispectral imaging according to the present invention
Control method is further described in detail.
As shown in figure 1, including optical frames according to the gazing type space camera timesharing multispectral imaging control method of the present invention
Make in head (1), swept-band light-dividing device (2), focal plane subassembly (3), signal processing apparatus (4), controller (5) composition cameras
The swept-band filtering apparatus, focal plane subassembly, signal processing apparatus of camera are controlled according to the workflow of setting with a controller
Tetra- kinds of basic working modes of Cheng Shixian can make camera autonomous control ability strong, and control device integrated level is high, while between design system
Difference hardware synchronization control signal interface, it is ensured that the high-precision timing synchronization between system distinct device.
Wherein, optical lens (1) converges in the light beam from land object information on visible ray focal plane subassembly (3)；Can
Become wave band light-dividing device (2) and enter for switching the optical filter of different spectral coverage in light path, make the light with different spectral coverage scope
Through realizing spectral coverage selection function；Focal plane subassembly (3) receives the incoming signal from optical lens (1), and to detection target letter
Be converted to electric signal after number carrying out sampling response and input to signal processing apparatus (4)；Signal processing apparatus (4) gives birth to focal plane subassembly
Into electric signal be amplified, filter, export after analog-to-digital conversion and coding；
Swept-band light-dividing device, including stepper motor and multiple different spectral coverage optical filters；Stepper motor can make not
Same optical filter enters optical lens (1) to the light path of focal plane subassembly (3)；Only one of which optical filter can be sent out in all optical filters
Go out zero signal, be defined as initial optical filter, (zero-bit refers to the center of optical filter and the center alignment of light path)；
Controller (5) control swept-band filtering apparatus (2), focal plane subassembly (3) and signal processing apparatus (4) realize four kinds
Basic imaging control model, controller directly controls swept-band light-dividing device, and (2) Walk stepper motors drive different optical filters
Into in light path, while controller (5) can produce imaging synchronous control signal, for trigger signal processing unit (4) control
Focal plane subassembly (3) is integrated imaging, i.e. the electric signal of control signal processing unit (4) focusing plane component (3) generation enters successively
Exported after row amplification, filtering, analog-to-digital conversion and coding.
The imaging pattern implementation steps of the present invention are as follows：
Only have initial optical filter to send zero signal in all optical filters；
First, controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial optical filter (first
The optical filter of individual entrance light path) zero-bit (center of optical filter and the alignment of the center of light path), zero is sought every time according to same
One direction fixed, which rotates, seeks zero, is sought using each general section of optical filter counterclockwise rotation in swept-band light-dividing device (2)
The initial optical filter for sending zero signal is looked for, walked step number does not detect zero signal yet if stepper motor rotation is turned around,
Stop motion is completed to reset, and using the spectral coverage optical filter in current light path as initial optical filter, the initial optical filter is set to
Zero-bit optical filter.Seek after zero end, controller (5) waits control instruction, then according to instruction agreement as Fig. 2~Fig. 5 arranges
Flow, completes mode of operation control.
Simple spectrum section single imaging pattern (6)：As shown in Figure 2 and Figure 6, controller (5) receives " spectral deploying " bus command
Afterwards, according to instruction control swept-band light-dividing device (2), specified spectral coverage optical filter is inserted in light path, driving stepper motor refers to
Fixed optical filter enter in light path i.e. mechanism action in place after, wait " simple spectrum section single imaging pattern " bus command, " simple spectrum section
Single imaging pattern " bus command reach after, controller (5) by time of integration (i.e. camera exposure time) of inner buffer etc. into
As parameter delivers to signal processing apparatus (4)；
Controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, is controlled by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging processed, so far completes a simple spectrum section single Irnaging procedures, after flow terminates, controller (5) is automatic
Into standby mode.
Simple spectrum section continuous imaging mode (7)：As shown in Figure 3 and Figure 7, controller (5) receives " spectral deploying " bus command
Afterwards, specified spectral coverage optical filter is inserted after the completion of light path, mechanism action according to instruction control " swept-band light-dividing device ", if
Mode of operation " simple spectrum section continuous imaging mode " bus command is received, then the imaging parameters such as the time of integration received before are sent
To signal processing circuit, imaging synchronous control signal is then produced to signal processing circuit, focal plane is controlled by signal processing circuit
Component integration imaging, then controller (5) delay waits until that the imaging cycle of a setting is completed, then controller (5)
Imaging parameters and imaging synchronous control signal are retransmited, simple spectrum section continuous imaging control mould is carried out with the fixed cycle
Formula.
Full spectral coverage single imaging pattern (8)：As shown in Figure 4 and Figure 8, controller (5) receives mode of operation " full spectral coverage single
Control swept-band light-dividing device to reset after imaging pattern " bus command, spectral coverage optical filter will be given tacit consent to and inserted in light path, then
The imaging parameters such as the time of integration received before are sent to signal processing circuit, and produce imaging synchronous control signal to signal
Process circuit, focal plane subassembly integration imaging is controlled by signal processing circuit, and then delay waits until that imaging cycle terminates, then controls
Swept-band light-dividing device will be inserted in light path to next spectral coverage optical filter, time of integration received before sending again afterwards etc.
Imaging parameters are sent to signal processing circuit, and produce imaging synchronous control signal to signal processing circuit, by signal transacting electricity
Road controls focal plane subassembly integration imaging, and so circulation, until completing the full spectral coverage single image forming job of all spectral coverages, is then controlled
Device, which enters, waits imaging pattern
Full spectral coverage continuous imaging mode (9)：As shown in figs. 5 and 9, controller receive mode of operation " full spectral coverage it is continuous into
As pattern " set control swept-band light-dividing device after bus command to reset, spectral coverage optical filter will be given tacit consent to and inserted in light path；So
The imaging parameters such as the time of integration received before are sent to signal processing circuit afterwards, and produce imaging synchronous control signal to letter
Number process circuit, focal plane subassembly integration imaging is controlled by signal processing circuit, and then delay waits until that imaging cycle terminates；Then
Control swept-band light-dividing device to insert next spectral coverage optical filter in light path again, then retransmit the time of integration received before
Sent Deng imaging parameters to signal processing circuit, and produce imaging synchronous control signal to signal processing circuit, by signal transacting
Circuit controls focal plane subassembly integration imaging；So move in circles, controller enters full spectral coverage continuous imaging mode
Simple spectrum section continuous imaging mode and full spectral coverage continuous imaging mode, can be terminated by wait imaging instruction, and controller is received
Enter after to the instruction and wait imaging pattern, four kinds of mode of operations realize switching interaction by wait imaging pattern.
As shown in figure 11, further preferred scheme is：A kind of gazing type space camera timesharing multispectral imaging control method,
Simple spectrum section single imaging pattern (6) can be realized, it is simple spectrum section continuous imaging mode (7), full spectral coverage single imaging pattern (8), complete
The switching of these four basic image forming job patterns of spectral coverage continuous imaging mode (9), step is as follows：
1) after controller (5) receives spectral deploying bus command, controller (5) controls swept-band point according to the instruction
Electro-optical device (2), specified spectral coverage optical filter is inserted in light path, and the optical filter that driving stepper motor is specified enters i.e. machine in light path
Structure is acted in place, waits simple spectrum section single imaging pattern bus command,
After controller (5) receives simple spectrum section single imaging pattern bus command, into simple spectrum section single imaging pattern
(6) time of integration that, i.e., controller (5) caches inside in advance, i.e. the imaging parameters of camera exposure time deliver to signal transacting
Device (4)；
Controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, is controlled by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging processed, so far completes a simple spectrum section single Irnaging procedures；One simple spectrum section single Irnaging procedures knot
Shu Hou, controller (5) is automatically into standby mode.
2) after controller (5) receives simple spectrum section continuous imaging mode bus command, into simple spectrum section continuous imaging mode
(7), step is as follows：
(2.1) time of integration that to be controller (5) cache inside in advance, i.e. the imaging parameters of camera exposure time are delivered to
Signal processing apparatus (4)；
(2.2) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, by signal processing apparatus
(4) focal plane subassembly (3) integration imaging is controlled, then controller (5) delay waits until that the imaging cycle of a setting is completed
(2.3) return to step (2.1), i.e., carry out simple spectrum section continuous imaging, until being connected to stopping with the imaging cycle of setting
After imaging instruction, stop imaging.
3) after controller (5) receives full spectral coverage single imaging pattern bus command, into full spectral coverage single imaging pattern
(8), step is as follows：
3.1) controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial spectral coverage optical filter,
I.e. first enter light path optical filter zero-bit, zero sought every time rotated according to the direction of same fixation and seek zero, make variable ripple
The initial optical filter for sending zero signal is found in each spectral coverage optical filter counterclockwise rotation in section light-dividing device (2), if
Stepper motor rotation, which is turned around, finds initial spectral coverage optical filter, then judges to seek zero success；Do not examined yet if stepper motor rotation is turned around
Zero signal is measured, then stop motion, using the spectral coverage optical filter in current light path as initial optical filter, by the initial optical filter
Zero-bit optical filter is set to, is sought after zero end, controller (5) waits control instruction；When full spectral coverage single imaging pattern bus refers to
After order is reached, step (2) is carried out
3.2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
3.3) time of integration that controller (5) caches inside in advance, i.e. the imaging parameters of camera exposure time deliver to letter
Number processing unit (4)；
3.4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, by signal processing apparatus
(4) focal plane subassembly (3) integration imaging is controlled, then controller (5) delay waits until that the imaging cycle of a setting is completed；
3.5) controller (5) controls the stepper motor of swept-band light-dividing device to insert light to next spectral coverage optical filter again
Lu Zhong, return to step (3.3), until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one,
The full spectral coverage single image forming job of all spectral coverages is completed, then controller, which enters, waits imaging pattern.
4) after controller (5) receives full spectral coverage continuous imaging mode bus command, into full spectral coverage continuous imaging mode
(9), step is as follows：
4.1) controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial spectral coverage optical filter,
I.e. first enter light path optical filter zero-bit, zero sought every time rotated according to the direction of same fixation and seek zero, make variable ripple
The initial optical filter for sending zero signal is found in each spectral coverage optical filter counterclockwise rotation in section light-dividing device (2), if
Stepper motor rotation, which is turned around, finds initial spectral coverage optical filter, then judges to seek zero success；Do not examined yet if stepper motor rotation is turned around
Zero signal is measured, then stop motion, using the spectral coverage optical filter in current light path as initial optical filter, by the initial optical filter
Zero-bit optical filter is set to, is sought after zero end, controller (5) waits control instruction；When full spectral coverage continuous imaging mode bus refers to
After order is reached, step (2) is carried out
4.2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
4.3) time of integration that controller (5) caches inside in advance, i.e. the imaging parameters of camera exposure time deliver to letter
Number processing unit (4)；
4.4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, by signal processing apparatus
(4) focal plane subassembly (3) integration imaging is controlled, then controller (5) delay waits until that the imaging cycle of a setting is completed；
4.5) controller (5) controls the stepper motor of swept-band light-dividing device to insert light to next spectral coverage optical filter again
Lu Zhong, return to step (3), until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one, it is complete
Into the full spectral coverage single image forming job of all spectral coverages；
4.6) repeat step (4.2)~(4.5), until being connected to after stopping imaging instruction, stop imaging.
5) using full spectral coverage continuous imaging mode as embodiment, such as Figure 10 shows that step is as follows：
5.1) controller (5) completes power-on reset, the control swept-band light splitting dress preferably within 20S ± 500ms time
(2) reset is put, i.e., is inserted B1 (panchromatic) spectral coverage optical filter in light path.The optical filter rotation one of swept-band light-dividing device (2)
Week is 2000 steps, if during driving stepper motor optical filter rotate counterclockwise, receiving Hall sensor zero signal and then standing
That is zero success is sought in stop motion, i.e. closed loop；If 2000 steps of rotation do not receive zero signal yet, current location is put in stop motion
For zero-bit.Controller (5) waits control instruction, after full spectral coverage continuous imaging mode bus command is reached, and carries out step (2)
5.2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
5.3) integration under controller (5) will be received and cached by communication bus between subsystem (preferably 1553B buses)
The imaging parameters such as the spectral coverage positional information of time and current facility pass through camera internal communication bus (three-wire system communication interface electricity
Road) send to signal processing apparatus (4)；
5.4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4), then by signal processing apparatus
(4) focal plane subassembly (3) integration imaging is controlled, then an imaging cycle completion is waited until by 5S delay；
5.5) controller (5) control swept-band light-dividing device inserts B2 spectral coverage optical filters in light path, during mechanism action
Between design load be less than 5S, return to step (3), next hardware synchronization control signal of waiting step (4) is produced, so circulated past
It is multiple, until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one, complete the complete of all spectral coverages
Spectral coverage single image forming job；
5.6) repeat step (5.2)~(5.5), until being connected to after stopping imaging instruction, stop imaging.
When testing the trailing edge of continuous two imagings synchronous control signal in full spectral coverage continuous imaging mode by oscillograph
Between be spaced, test result meet the μ S. of 10S ± 1 due to this signal by hardware timing, the cycle produce, be designed as 10S time-count cycle,
Consider that the time-delay characteristics of hardware circuit use difference interface circuit to transmit to reduce the interference between signal, using High Precision Crystal Oscillator
As elapsed time clock, devices at full hardware mechanism is implemented using FPGA device and carries out high-precision timing, accuracy of timekeeping can be good at control
In positive and negative 1 microsecond, compared with the software instruction formula accuracy of timekeeping in current other technical methods, it can be improved by Millisecond to 1
Microsecond grade.The imaging synchronous control accuracy of equipment room is greatly improved.
Herein it should be noted that the content not being described in detail for this specification, because these contents are this areas
Known to technical staff, or by combine this specification description and prior art can easily realize, therefore, do not do
Repeat.
The preferred embodiments of the present invention are the foregoing is only, not for limiting the scope of the invention.For ability
For the technical staff in domain, on the premise of not paying creative work, some modifications and replacement can be made to the present invention,
All such modifications and replacement should be all included within the scope of the present invention.
Claims (6)
1. a kind of camera system of gazing type space camera timesharing multispectral imaging control, it is characterised in that including：Optical lens
(1), swept-band light-dividing device (2), focal plane subassembly (3), signal processing apparatus (4), controller (5)；
Swept-band light-dividing device (2) is placed between optical lens (1) and focal plane subassembly (3), the wave band for being selected to picture；
Information from target is focused on focal plane subassembly (3) by optical lens (1) by swept-band filtering apparatus (2) incidence
Form optical image；
Focal plane subassembly (3) carries out opto-electronic conversion to optical image and signal is read, and will come from the incident optical signal of optical lens (1)
Electric signal is converted to, the electric signal is carried out after sampling response, exports and gives signal processing apparatus (4)；
The electric signal of signal processing apparatus (4) focusing plane component (3) generation is amplified, filtered successively, analog-to-digital conversion and volume
Exported after code；
Controller (5) can control swept-band filtering apparatus (2), focal plane subassembly (3) and signal processing apparatus (4), to realize
Imaging control.
2. a kind of camera system of gazing type space camera timesharing multispectral imaging control according to claim 1, it is special
Levy and be：Imaging control can set four kinds of basic image forming job patterns, be simple spectrum section single imaging pattern (6), simple spectrum respectively
Section continuous imaging mode (7), full spectral coverage single imaging pattern (8), full spectral coverage continuous imaging mode (9).
3. a kind of gazing type space camera timesharing multispectral imaging control method, it is characterised in that：Simple spectrum section single can be realized
Imaging pattern (6), step is as follows：
(1) controller (5) is received after spectral deploying bus command, controls swept-band light-dividing device (2) to refer to according to the instruction
Fixed spectral coverage optical filter is inserted in light path, treats that optical filter that driving stepper motor specifies enters in light path i.e. that mechanism action is in place
Afterwards, simple spectrum section single imaging pattern bus command is waited；
(2) after simple spectrum section single imaging pattern bus command is reached, the time of integration that controller (5) caches inside in advance,
I.e. imaging parameters deliver to signal processing apparatus (4) including the camera exposure time；
(3) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, is controlled by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging, so far completes a simple spectrum section single Irnaging procedures；
After (4) simple spectrum section single Irnaging procedures terminate, controller (5) is automatically into standby mode.
4. a kind of gazing type space camera timesharing multispectral imaging control method, it is characterised in that：It can realize that simple spectrum section is continuous
Imaging pattern (7), step is as follows：
(1) controller (5) is received after spectral deploying bus command, controls swept-band light-dividing device (2) to refer to according to the instruction
Fixed spectral coverage optical filter is inserted in light path, treats that optical filter that driving stepper motor specifies enters in light path i.e. that mechanism action is in place
Afterwards, simple spectrum section continuous imaging mode bus command is waited, after simple spectrum section continuous imaging mode bus command is reached, step is carried out
(2)；
(2) time of integration that controller (5) caches inside in advance, i.e. imaging parameters are delivered at signal including the camera exposure time
Manage device (4)；
(3) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4) again, is controlled by signal processing apparatus (4)
Focal plane subassembly (3) integration imaging, then controller (5) delay waits until that the imaging cycle of a setting is completed；
(4) return to step (2), i.e., carry out simple spectrum section continuous imaging, until being connected to stopping imaging instruction with the imaging cycle of setting
Afterwards, imaging is stopped.
5. a kind of gazing type space camera timesharing multispectral imaging control method, it is characterised in that：Full spectral coverage single can be realized
Imaging pattern (8), step is as follows：
(1) controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial spectral coverage optical filter, i.e., first
The zero-bit of the optical filter of individual entrance light path, seeks zero and is rotated according to the direction of same fixation and seek zero, make swept-band light splitting every time
The initial optical filter for sending zero signal is found in each spectral coverage optical filter counterclockwise rotation in device (2), if stepping is electric
Machine, which rotates to an angle, finds initial spectral coverage optical filter, then stop motion, and zero success is sought in judgement；If stepper motor rotation is turned around
Zero signal is still not detected by, then stop motion, using the spectral coverage optical filter in current light path as initial optical filter, that is, be set to
Zero-bit optical filter, seeks after zero end, and controller (5) waits control instruction；When full spectral coverage single imaging pattern bus command is reached
Afterwards, step (2) is carried out
(2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
(3) time of integration that controller (5) caches inside in advance, i.e. imaging parameters are delivered at signal including the camera exposure time
Manage device (4)；
(4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4), is controlled by signal processing apparatus (4) burnt
Face component (3) integration imaging, then controller (5) delay waits until that the imaging cycle of a setting is completed；
(5) stepper motor of controller (5) control swept-band light-dividing device will be inserted in light path to next spectral coverage optical filter, be returned
Step (3) is returned, until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one, completes all
The full spectral coverage single image forming job of spectral coverage, then controller, which enters, waits imaging pattern.
6. a kind of gazing type space camera timesharing multispectral imaging control method, it is characterised in that：It can realize that full spectral coverage is continuous
Imaging pattern (9), step is as follows：
(1) controller (5) completes power-on reset, and control swept-band light-dividing device (2) finds initial spectral coverage optical filter, i.e., first
The zero-bit of the optical filter of individual entrance light path, seeks zero and is rotated according to the direction of same fixation and seek zero, make swept-band light splitting every time
The initial optical filter for sending zero signal is found in each spectral coverage optical filter counterclockwise rotation in device (2), if stepping is electric
Machine, which rotates to an angle, finds initial spectral coverage optical filter, then stop motion, and zero success is sought in judgement；If stepper motor rotation is turned around
Zero signal is still not detected by, then stop motion, using the spectral coverage optical filter in current light path as initial optical filter, that is, be set to
Zero-bit optical filter, seeks after zero end, and controller (5) waits control instruction；After full spectral coverage continuous imaging mode, which is instructed, to be reached, enter
Row step (2)
(2) controller (5) control swept-band light-dividing device (2) accesses the initial optical filter in light path；
(3) time of integration that controller (5) caches inside in advance, i.e. imaging parameters are delivered at signal including the camera exposure time
Manage device (4)；
(4) controller (5) produces imaging synchronous control signal and gives signal processing apparatus (4), is controlled by signal processing apparatus (4) burnt
Face component (3) integration imaging, then controller (5) delay waits until that the imaging cycle of a setting is completed；
(5) stepper motor of controller (5) control swept-band light-dividing device will be inserted in light path to next spectral coverage optical filter, be returned
Step (3) is returned, until all spectral coverage optical filters in swept-band light-dividing device (2) are inserted in light path one by one, completes all
The full spectral coverage single image forming job of spectral coverage；
(6) return to step (2), repeat step (2)~(5), until being connected to after stopping imaging instruction, stop imaging.
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| CN111426640A (en) * | 2020-05-18 | 2020-07-17 | 中国工程物理研究院流体物理研究所 | Switchable continuous working spectrum camera and detection method |
| CN111567027A (en) * | 2017-09-29 | 2020-08-21 | 交互数字Ce专利控股有限公司 | Plenoptic imaging device with reduced optical crosstalk, corresponding method, computer program product, computer readable carrier medium and apparatus |
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