CN116248976B - Camera load and observation platform - Google Patents
Camera load and observation platform Download PDFInfo
- Publication number
- CN116248976B CN116248976B CN202310529890.4A CN202310529890A CN116248976B CN 116248976 B CN116248976 B CN 116248976B CN 202310529890 A CN202310529890 A CN 202310529890A CN 116248976 B CN116248976 B CN 116248976B
- Authority
- CN
- China
- Prior art keywords
- infrared
- focal plane
- assembly
- real
- infrared focal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention relates to the technical field of infrared imaging, and provides a camera load and an observation platform, which are used for solving the problems that an infrared imaging load developed based on an uncooled infrared detector is low in imaging resolution, few in imaging wave band and difficult to realize quantitative application.
Description
Technical Field
The invention relates to the technical field of infrared imaging, in particular to a camera load and an observation platform.
Background
High-resolution multispectral imaging earth observation is one of the most important technical means in the field of space remote sensing. The high-resolution infrared multispectral imaging load is loaded in the wind cloud meteorological satellites, the marine observation satellites, the resource satellites, the environment satellites and the high-resolution multispectral satellites, the imaging resolution is often in the order of hundreds of meters to kilometers, the imaging breadth is often in the order of hundreds of kilometers to kilometers, and the imaging wave band number is often between 4 and 10. The load is a high-resolution infrared detector, a scanning imaging system is adopted for realizing a large imaging breadth, so that the load weight reaches hundreds of kilograms, the power consumption is hundreds of watts, the development cost is high, the high-resolution infrared multispectral imaging load is difficult to load for commercial aerospace due to the existence of the problems, and the infrared practical application in the field of commercial remote sensing aerospace is less.
The uncooled thermal infrared imaging spectrometer is based on the micro-bolometer array, has obvious advantages in the remote sensing field because refrigeration equipment is not needed, can overcome the defects of large volume, high cost, high power consumption and the like of the traditional refrigeration type imaging spectrometer, greatly reduces the load pressure of an observation platform, and is suitable for light and small-sized aerospace platforms such as satellites. The uncooled thermal infrared imaging spectrometer can simultaneously acquire thermal infrared band spectrum information and spatial information of a ground or deep space thermal target, and is expected to be used for ecological environment quality assessment, natural disaster monitoring, surface water meter temperature mapping, geological mineral exploration, national defense and military and other aspects.
With the gradual improvement of the performance of the uncooled infrared detector, particularly the development of an area array infrared focal plane assembly based on the design of a large-scale integrated reading circuit, the development of light-small-sized, low-power-consumption and low-cost high-resolution infrared multispectral imaging load becomes possible. However, in the current commercial aerospace field, the problems that the infrared imaging load developed based on the uncooled infrared detector is low in imaging resolution, few in imaging band and difficult to realize quantitative application are common.
Disclosure of Invention
The invention provides a camera load and an observation platform for solving the technical problems, which not only have the advantages of small volume, low weight, low power consumption and low cost, but also can realize higher spatial resolution and more imaging wave bands, and can carry out radiation correction and temperature drift correction, and when the camera load is applied to the observation platform such as a satellite, the observation platform can realize on-orbit radiation correction and quantitative remote sensing.
The technical scheme adopted by the invention is as follows:
the utility model provides a camera load, includes infrared telescope, real-time radiation correcting unit, multichannel beam splitting component, uncooled infrared focal plane subassembly and information processing circuit, the infrared telescope is used for receiving the infrared radiation of waiting to image the scene, real-time radiation correcting unit multichannel beam splitting component with uncooled infrared focal plane subassembly sets gradually behind the infrared telescope, real-time radiation correcting unit is used for through opening with fully permeating the infrared radiation of waiting to image the scene, through closing with the infrared radiation of correction waiting to image the scene, multichannel beam splitting component is used for permeating the infrared radiation of preset multiple wave band, and shelters from uncooled infrared focal plane subassembly presets quantity of pixels, uncooled infrared focal plane subassembly is used for gathering the infrared spectrum data of the infrared radiation of permeating the multichannel beam splitting component through the pixel that is not sheltered from, information processing circuit with uncooled infrared focal plane subassembly links to each other, information processing circuit is used for according to infrared spectrum data generates wait to image the multispectral image data of scene, wherein, information processing circuit is opened when real-time radiation shelters from infrared radiation correcting unit is by the infrared focal plane subassembly is closed and is predetermine quantity carries out the infrared focal plane picture and carries out the adjustment of the infrared focal plane when the infrared focal plane subassembly is closed by the infrared focal plane.
The camera load also comprises an active temperature control component, wherein the active temperature control component is arranged corresponding to the real-time radiation correction device, the multichannel light splitting component and the uncooled infrared focal plane component, and the active temperature control component is used for controlling the temperatures of the real-time radiation correction device, the multichannel light splitting component and the uncooled infrared focal plane component within a preset temperature fluctuation range.
The camera load also comprises a first mechanical mounting plate and a first interface circuit, wherein the first mechanical mounting plate is used for mounting the camera load on an observation platform, the first interface circuit is connected with the information processing circuit, and the first interface circuit is used for electrically connecting the camera load to the observation platform.
The infrared telescope covers a wave band of 3-14 mu m.
The multichannel beam splitting assembly comprises a first fixed structural member, a sheet-like interference type optical filter and a dark signal shielding sheet, wherein the first fixed structural member is fixed in the camera load, the sheet-like interference type optical filter is arranged on the first fixed structural member and is formed by splicing a plurality of optical filters with different wave bands, the sheet-like interference type optical filter is used for transmitting infrared radiation with preset wave bands, the dark signal shielding sheet is arranged on one side of the sheet-like interference type optical filter and is used for shielding pixels with preset quantity of uncooled infrared focal plane assemblies.
The real-time radiation correction device comprises a second fixed structural member, a background blocking piece and a miniature motor, wherein the second fixed structural member is fixed in the camera load, the background blocking piece is arranged on the second fixed structural member, the background blocking piece is correspondingly arranged with the sheet-shaped interference filter, the miniature motor is arranged on the second fixed structural member, and the miniature motor is used for driving the background blocking piece to be opened and closed so as to realize the opening and closing of the real-time radiation correction device.
The uncooled infrared focal plane assembly comprises an uncooled infrared focal plane detector, a detector driving circuit and a second interface circuit, wherein the uncooled infrared focal plane detector comprises a plurality of pixels, the detector driving circuit is used for driving the pixels of the uncooled infrared focal plane detector to collect infrared spectrum data, the second interface circuit is connected with the information processing circuit, and the second interface circuit is used for transmitting the infrared spectrum data to the information processing circuit.
The active temperature control assembly includes a thermoelectric cooler and a thermoelectric cooling drive circuit.
The camera load also includes a visible light camera.
An observation platform comprising the camera load.
The invention has the beneficial effects that:
the camera load is designed based on the uncooled infrared focal plane assembly, and is matched with the arrangement of the infrared telescope, the real-time radiation correction device and the multichannel beam splitting assembly, so that the camera load has the advantages of small volume, low weight, low power consumption and low cost, can realize higher spatial resolution and more imaging wave bands, can perform radiation correction and temperature drift correction, and can realize on-orbit radiation correction and quantitative remote sensing of an observation platform when the camera load is applied to the observation platform such as a satellite.
Drawings
FIG. 1 is a block diagram of a camera load according to an embodiment of the present invention;
FIG. 2 is a block schematic diagram of a camera load according to one embodiment of the invention;
FIG. 3 is a schematic diagram of the uncooled infrared focal plane assembly of one embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a multi-channel beam-splitting module according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a real-time radiation correction device according to an embodiment of the present invention in a closed state;
FIG. 6 is a schematic view showing a structure of a real-time radiation correction device according to an embodiment of the present invention in an open state;
FIG. 7 is a schematic perspective view of a camera load according to an embodiment of the present invention;
FIG. 8 is a schematic view of a camera load from one perspective according to one embodiment of the present invention;
FIG. 9 is a schematic image swath of a camera load stitched image according to one embodiment of the invention.
Reference numerals:
the system comprises an infrared telescope 1, a real-time radiation correction device 2, a multichannel beam splitting assembly 3, an uncooled infrared focal plane assembly 4, an information processing circuit 5, an active temperature control assembly 6, a first mechanical mounting plate 7 and a first interface circuit 8;
uncooled infrared focal plane detector 401, detector driving circuit 402, second interface circuit 403;
a first fixing structure 301, a plate-like interference filter 302, and a dark signal shielding plate 303;
a second fixed structural member 201, a background blocking piece 202 and a miniature motor 203;
an infrared camera 100, a visible light camera 200, and a second mechanical mounting plate 01.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the camera load of the embodiment of the invention includes an infrared telescope 1, a real-time radiation correction device 2, a multi-channel beam splitter assembly 3, a non-refrigeration infrared focal plane assembly 4 and an information processing circuit 5, wherein the infrared telescope 1 is used for receiving infrared radiation of a scene to be imaged, the real-time radiation correction device 2, the multi-channel beam splitter assembly 3 and the non-refrigeration infrared focal plane assembly 4 are sequentially arranged behind the infrared telescope 1, the real-time radiation correction device 2 is used for completely transmitting infrared radiation of the scene to be imaged through opening and closing to correct the infrared radiation of the scene to be imaged, the multi-channel beam splitter assembly 3 is used for transmitting the infrared radiation of preset multiple wave bands and shielding pixels of the non-refrigeration infrared focal plane assembly 4, the non-refrigeration infrared focal plane assembly 4 is used for collecting infrared spectrum data transmitted through the infrared radiation of the multi-channel beam splitter assembly 3 through the non-shielded pixels, the information processing circuit 5 is connected with the non-refrigeration infrared focal plane assembly 4, and the information processing circuit 5 is used for generating multi-spectrum image data of the scene to be imaged according to the infrared spectrum data, wherein the information processing circuit 5 is used for combining the preset number of the infrared focal plane assembly 2 when the real-time radiation correction device 2 is opened or closed to correct the preset number of pixels to be shielded by opening or closing, and carrying out non-refrigeration on the non-refrigeration image parameters of the non-refrigeration device.
Further, as shown in fig. 2, the camera load according to the embodiment of the present invention may further include an active temperature control component 6, where the active temperature control component 6 is disposed corresponding to the real-time radiation correction device 2, the multi-channel beam-splitting component 3, and the uncooled infrared focal plane component 4, and the active temperature control component 6 is configured to control temperatures of the real-time radiation correction device 2, the multi-channel beam-splitting component 3, and the uncooled infrared focal plane component 4 within a preset temperature fluctuation range.
Further, as shown in fig. 2, the camera load according to the embodiment of the present invention may further include a first mechanical mounting board 7 and a first interface circuit 8, wherein the first mechanical mounting board 7 is used for mounting the camera load on the observation platform, the first interface circuit 8 is connected to the information processing circuit 5, and the first interface circuit 8 is used for electrically connecting the camera load to the observation platform.
In one embodiment of the invention, the infrared telescope 1 can cover a wave band of 3-14 mu m, is a wide-wave band infrared telescope, has an optical relative aperture of 1-1.5, and meets the purpose of gathering infrared radiation energy of a scene to be imaged to the greatest extent by wide-wave band infrared imaging. The infrared telescope 1 can employ a transmissive or reflective optical system.
In a preferred embodiment of the invention, the infrared telescope 1 employs a reflective optical system, and the optical relative aperture may be suitably greater than 1, but not greater than 1.5, to achieve higher spatial resolution multispectral infrared imaging.
In some embodiments of the present invention, if the caliber of the infrared telescope 1 is smaller than 50mm, the arrangement sequence of the infrared telescope 1, the real-time radiation correction device 2 and the multi-channel beam splitting assembly 3 can be changed, so that the real-time radiation correction device 2, the infrared telescope 1 and the multi-channel beam splitting assembly 3 are sequentially arranged, and thus the full-path real-time radiation correction is realized.
In one embodiment of the invention, as shown in FIG. 3, the uncooled infrared focal plane assembly 4 includes an uncooled infrared focal plane detector 401, a detector drive circuit 402, and a second interface circuit 403. The uncooled infrared focal plane detector 401 comprises a plurality of pixels, the detector driving circuit 402 is used for driving the pixels of the uncooled infrared focal plane detector 401 to collect infrared spectrum data, the second interface circuit 403 is connected with the information processing circuit 5, and the second interface circuit 403 is used for transmitting the infrared spectrum data to the information processing circuit 5. In one embodiment of the present invention, uncooled infrared focal plane detector 401 may be soldered to the circuit board of detector drive circuit 402, and detector drive circuit 402 and second interface circuit 403 may be coupled together by a connector. The uncooled infrared focal plane detector 401 may be in a vacuum package, where the FPA (Focal Plane Array ) and TEC (Thermoelectric Cooler, semiconductor refrigerator) are packaged together, and the wavelength band of the uncooled infrared focal plane detector that can transmit light covers 3-14 μm. The FPA may convert the infrared radiation optical signal transmitted through the detector window into an electrical signal, and the electrical signal is collected and transmitted through the detector driving circuit 402 and the second interface circuit 403, and sent to the information processing circuit 5. The detector driving circuit 402 is used for supplying power and driving the FPA and the TEC, and the size and the direction of the TEC driving current are changed through the detector driving circuit 402, so that refrigeration and heating are realized, and the working temperature of the uncooled infrared focal plane detector 401 is stabilized.
In one embodiment of the present invention, as shown in FIG. 4, the multi-channel beam splitting assembly 3 includes a first fixed structure 301, a plate-like interference filter 302, and a dark signal blocking plate 303. The first fixing structure 301 is fixed in the camera load, the plate-like interference filter 302 is disposed on the first fixing structure 301, the plate-like interference filter 302 is formed by splicing a plurality of filters with different wavebands, and the plate-like interference filter 302 is used for transmitting infrared radiation with preset wavebands. In fig. 4, taking four filters capable of transmitting infrared radiation of the wave bands 1 to 4 as an example, the camera load can obtain infrared imaging of the 4 wave bands by a push-broom mode. The dark signal shielding sheet 303 is disposed on one side of the sheet interference filter 302, and the dark signal shielding sheet 303 is used for shielding the preset number of pixels of the uncooled infrared focal plane assembly 4. In one embodiment of the present invention, dark signal blocking tab 303 blocks at least 10 picture elements of uncooled infrared focal plane assembly 4. These pixels blocked by the dark signal blocking sheet 303 can be used to correct low-frequency temperature drift when the subsequent information processing circuit 5 performs data processing on the received infrared spectrum data. The correction of the low-frequency temperature drift is to use the output of the shielded pixels as the original output of the uncooled infrared focal plane detector 401 at different working temperatures, then fit the drift of the output of the uncooled infrared focal plane detector 401 along with the temperature change through a polynomial fitting algorithm, so as to obtain a fitting coefficient, and compensate the temperature drift caused by the environmental temperature in real time during imaging, so as to reduce the non-uniformity of the output of the uncooled infrared focal plane detector 401 along with the temperature change.
In one embodiment of the present invention, as shown in fig. 5 and 6, the real-time radiation correction device 2 includes a second fixed structure 201, a background shield 202, and a micro motor 203. The second fixing structure 201 is fixed in the camera load, the background blocking piece 202 is arranged on the second fixing structure 201, the background blocking piece 202 and the sheet-shaped interference filter 302 are correspondingly arranged, the micro motor 203 is arranged on the second fixing structure 201, and the micro motor 203 is used for driving the background blocking piece 202 to be opened and closed so as to realize the opening and closing of the real-time radiation correction device 2. For example, the micro motor 203 may drive the latch back stop 202 to open during forward rotation and drive the latch back stop 202 to close during reverse rotation. The background flap 202 shown in fig. 5 is in a closed state, and the background flap 202 shown in fig. 6 is in an open state.
The arrangement of the background blocking piece 202 and the sheet-like interference filter 302 refers to the arrangement of the shapes, sizes and positions of the background blocking piece 202 and the sheet-like interference filter 302, so that when the background blocking piece 202 of the real-time radiation correction device 2 is closed, the sheet-like interference filter 302 of the multi-channel beam splitter 3 can be completely blocked, and when the background blocking piece 202 of the real-time radiation correction device 2 is opened, the infrared radiation light of a target scene to be imaged can be completely transmitted through the sheet-like interference filter 302 of the multi-channel beam splitter 3.
In the embodiment of the present invention, the background blocking piece 202 corresponds to a background with uniform temperature, and when it is in the closed state, it can perform pixel value addition on the pixel with the pixel initial value of large pixel and the pixel with the pixel initial value of small pixel in the scene to be imaged. By setting the background blocking piece 202, when the real-time radiation correction device 2 is closed, the uncooled infrared focal plane component 4 records the temperature value of the current background blocking piece 202 through a temperature sensor, and the information processing circuit 5 corrects the responsivity of each pixel on the uncooled infrared focal plane detector 401 at the current environment temperature by using the gain coefficient and the bias coefficient of each pixel calculated by a two-point correction method based on the response signal value of the current uncooled infrared focal plane component 4 and the temperature value of the background blocking piece 202, thereby eliminating the influence of the non-uniformity of the uncooled infrared focal plane detector 401 and improving the imaging quality.
In one embodiment of the present invention, when the camera load is applied to an observation platform such as a satellite platform, the real-time radiation correction device 2 can be controlled to be closed once every time the observation platform winds the earth, and the temperature value of the background blocking piece 202 and the response signal value of the uncooled infrared focal plane component 4 when the real-time radiation correction device 2 is closed are recorded at the same time, so as to be used for data processing and quantitative application.
In one embodiment of the present invention, the active temperature control assembly 6 includes a thermoelectric cooler and a thermoelectric cooling drive circuit. The active temperature control component 6 can perform high-precision temperature control on the real-time radiation correction device 2, the multichannel beam splitting component 3 and the uncooled infrared focal plane component 4, the temperature control precision is better than +/-0.25 ℃, and the temperature fluctuation of the real-time radiation correction device 2, the multichannel beam splitting component 3 and the uncooled infrared focal plane component 4 is ensured not to exceed 0.5 ℃ during the load working period of the high-resolution space multispectral camera.
In one embodiment of the invention, the first mechanical mounting plate 7 may be located on the side of the camera load whole in order to mount the camera load on the observation platform.
In one embodiment of the invention, the first interface circuit 8 is used for powering the camera payload by the observation platform in addition to the communication between the camera payload and the observation platform.
The above embodiments describe the infrared camera portion of the camera load, which in one embodiment of the invention may also include a visible light camera, i.e., as shown in fig. 7 and 8, the camera load is a combination of the infrared camera 100 and the visible light camera 200. As shown in fig. 7 and 8, the visible light camera 200 includes a second mechanical mounting plate 01, and the visible light camera 200 may be fixed with the infrared camera 100 through the second mechanical mounting plate 01. The infrared camera 100 can be used for realizing high-resolution multispectral infrared imaging, and the imaging of the visible light camera 200 can be used as an infrared bottom graph and also used as a basis for geographic information matching, so that the application effect of the camera load can be improved.
In summary, according to the camera load according to the embodiment of the invention, based on the uncooled infrared focal plane assembly design, the arrangement of the infrared telescope, the real-time radiation correction device and the multichannel beam splitting assembly is matched, so that the camera load has the advantages of small volume, low weight, low power consumption and low cost, can realize higher spatial resolution and more imaging bands, can perform radiation correction and temperature drift correction, and can enable the observation platform to realize on-orbit radiation correction and quantitative remote sensing when being applied to observation platforms such as satellites.
Based on the camera load of the above embodiment, the invention also provides an observation platform.
The observation platform provided by the embodiment of the invention comprises the camera load of any embodiment of the invention, and the observation platform can be a wiener satellite, an unmanned aerial vehicle, a fire balloon and the like.
In one embodiment of the present invention, a plurality of camera load tiling may be applied to an observation platform, as shown in fig. 9, where the observation platform uses four camera loads that are tiled, and if the imaging breadth of each camera load at a height of 500Km is greater than 120Km, then the observation platform may achieve an imaging breadth of greater than 480Km when the orbit height reaches 500 Km.
According to the observation platform provided by the embodiment of the invention, not only can the light and small-sized design be realized, but also the imaging resolution is high, the wave bands are multiple, the on-orbit radiation correction can be realized, and the quantitative remote sensing can be realized.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. The camera load is characterized by comprising an infrared telescope, a real-time radiation correction device, a multichannel light splitting assembly, an uncooled infrared focal plane assembly and an information processing circuit, wherein the infrared telescope is used for receiving infrared radiation of a scene to be imaged, the real-time radiation correction device, the multichannel light splitting assembly and the uncooled infrared focal plane assembly are sequentially arranged behind the infrared telescope, the real-time radiation correction device is used for correcting the infrared radiation of the scene to be imaged by opening the infrared radiation which completely penetrates the scene to be imaged and closing the infrared radiation of the scene to be imaged, the multichannel light splitting assembly is used for penetrating the infrared radiation of preset multiple wave bands and shielding pixels of the uncooled infrared focal plane assembly, the uncooled infrared focal plane assembly is used for collecting infrared spectrum data of the infrared radiation which penetrates the multichannel light splitting assembly through the pixels which are not shielded, the information processing circuit is connected with the uncooled infrared focal plane assembly, the information processing circuit is used for generating the multi-image data of the scene to be imaged according to the infrared spectrum data, wherein the information processing circuit is used for carrying out real-time adjustment on the infrared focal plane image data of the scene when the information processing circuit is opened or closed and the infrared focal plane assembly is combined with the preset radiation of the uncooled infrared focal plane assembly to correct the real-time radiation, the information processing circuit is used for carrying out the real-time adjustment and the real-time adjustment of the parameters when the infrared focal plane assembly is used for correcting the imaging device,
the multi-channel light splitting assembly comprises a first fixed structural member, a sheet-shaped interference type optical filter and a dark signal shielding sheet, wherein the first fixed structural member is fixed in a camera load, the sheet-shaped interference type optical filter is arranged on the first fixed structural member and is formed by splicing optical filters of a plurality of different wavebands, the sheet-shaped interference type optical filter is used for transmitting infrared radiation of preset wavebands, the dark signal shielding sheet is arranged on one side of the sheet-shaped interference type optical filter and is used for shielding pixels of the preset quantity of the uncooled infrared focal plane assembly.
2. The camera load of claim 1, further comprising an active temperature control assembly disposed in correspondence with the real-time radiation correction device, the multichannel beam splitting assembly, and the uncooled infrared focal plane assembly, the active temperature control assembly configured to control temperatures of the real-time radiation correction device, the multichannel beam splitting assembly, and the uncooled infrared focal plane assembly within a preset temperature fluctuation range.
3. The camera load of claim 2, further comprising a first mechanical mounting board for mounting the camera load on an observation platform and a first interface circuit coupled to the information processing circuit for electrically connecting the camera load to the observation platform.
4. A camera load according to any one of claims 1-3, wherein the infrared telescope covers a 3-14 μm band.
5. A camera load according to any one of claims 1-3, wherein the real-time radiation correction device comprises a second fixed structural member, a background blocking piece and a micro motor, the second fixed structural member is fixed in the camera load, the background blocking piece is arranged on the second fixed structural member, the background blocking piece is arranged corresponding to the sheet-like interference filter, the micro motor is arranged on the second fixed structural member, and the micro motor is used for driving the background blocking piece to be opened and closed so as to realize the opening and closing of the real-time radiation correction device.
6. The camera payload of claim 5, wherein the uncooled infrared focal plane assembly includes an uncooled infrared focal plane detector including a plurality of picture elements, a detector drive circuit to drive the picture elements of the uncooled infrared focal plane detector to collect the infrared spectral data, and a second interface circuit coupled to the information processing circuit to transmit the infrared spectral data to the information processing circuit.
7. The camera load of claim 2, wherein the active temperature control assembly comprises a thermoelectric cooler and a thermoelectric cooling drive circuit.
8. A camera load according to any of claims 1-3, further comprising a visible light camera.
9. An observation platform comprising a camera load according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310529890.4A CN116248976B (en) | 2023-05-11 | 2023-05-11 | Camera load and observation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310529890.4A CN116248976B (en) | 2023-05-11 | 2023-05-11 | Camera load and observation platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116248976A CN116248976A (en) | 2023-06-09 |
| CN116248976B true CN116248976B (en) | 2023-07-25 |
Family
ID=86629942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310529890.4A Active CN116248976B (en) | 2023-05-11 | 2023-05-11 | Camera load and observation platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116248976B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8749635B2 (en) * | 2009-06-03 | 2014-06-10 | Flir Systems, Inc. | Infrared camera systems and methods for dual sensor applications |
| CN102230823B (en) * | 2011-06-20 | 2012-12-26 | 北京理工大学 | Infrared two-point non-uniform calibrating method based on frame black body field diaphragm |
| CN109282901A (en) * | 2018-11-16 | 2019-01-29 | 北京遥感设备研究所 | A kind of separated type baffle bearing calibration of uncooled ir system |
| CN116026475A (en) * | 2022-07-28 | 2023-04-28 | 安徽砺剑防务科技有限公司 | Gas early warning and radiation calibration system and method based on uncooled infrared camera |
-
2023
- 2023-05-11 CN CN202310529890.4A patent/CN116248976B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN116248976A (en) | 2023-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Murphy et al. | The visible infrared imaging radiometer suite | |
| Wehr et al. | The EarthCARE mission–science and system overview | |
| CN105282492A (en) | Near-space airborne-to-ground real-time imaging system | |
| Aumann et al. | Atmospheric infrared sounder (AIRS) on the earth observing system | |
| US10670853B2 (en) | Imaging system with an optical path and telescope shape optimized for nanosatellites | |
| CN104897282A (en) | Utility-type thermal infrared high-spectral imaging instrument load system | |
| Joseph | Imaging sensors for remote sensing | |
| CN116248976B (en) | Camera load and observation platform | |
| Pagano et al. | Technology development in support of hyperspectral infrared atmospheric sounding in a CubeSat | |
| Guelman et al. | Small satellite's role in future hyperspectral Earth observation missions | |
| Hawkins et al. | Multi-spectral imager on the Near Earth Asteroid Rendezvous mission | |
| Kay et al. | Multispectral thermal imager (MTI) payload overview | |
| Iyengar et al. | The Goodrich 3rd generation DB-110 system: operational on tactical and unmanned aircraft | |
| Raymond et al. | Airborne and satellite imaging spectrometer development at TRW | |
| Arvidson et al. | Landsat and thermal infrared imaging | |
| Hursen et al. | GOES imager: overview and evolutionary development | |
| Baudin et al. | Medium resolution imaging spectrometer | |
| Spinhirne et al. | Preliminary spaceflight results from the uncooled infrared spectral imaging radiometer (ISIR) on shuttle mission STS-85 | |
| Talvard et al. | ArTeMiS: filled bolometer arrays for next-generation sub-mm telescopes | |
| Miller | Status of the Atmospheric Infrared Sounder (AIRS) | |
| Jhabvala et al. | Dual and multi-spectral band SLS infrared camera systems | |
| EP4044587A1 (en) | Image non-uniformity mitigation systems and methods | |
| Laakmann | Multiple detector thermal imaging systems | |
| Davancens et al. | Development of a long linear array beyond 12.5 um for earth observation | |
| WO1997042765A1 (en) | High resolution and wedge-filter camera system for low earth orbit satellite imaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |