CN114485939B - Dynamic tracking and detecting device and method for ultra-wide band spectrum of remote sensing satellite - Google Patents
Dynamic tracking and detecting device and method for ultra-wide band spectrum of remote sensing satellite Download PDFInfo
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
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Abstract
The invention discloses a dynamic tracking and detecting device and method for a remote sensing satellite ultra-wide band spectrum, and relates to the field of remote sensing imaging. Wherein, detection device includes: the device comprises a scanning rotating mirror, an imaging lens, an optical switch, a long-wave spectroscope, a long-wave converging lens group, a long-wave imaging unit, a Fourier spectrum measuring unit, a short-wave spectroscope, a short-wave converging lens group, a visible and near-infrared imaging unit, a grating spectrum measuring unit and a processor. Identifying a target through long-wave infrared imaging and visible and near infrared imaging, and guiding a scanning rotating mirror to dynamically track characteristic points; by controlling the on-off state of the optical switch, image information and spectrum information corresponding to characteristic points of the long-wave imaging unit, the Fourier spectrum measuring unit, the visible near-infrared imaging unit and the grating spectrum measuring unit in a target area are respectively obtained, and a dynamic target is accurately identified and tracked. Therefore, the technical problems of incomplete measuring wave band, limited light path layout, large equipment volume and poor capability of detecting and tracking dynamic targets of the spectrometer which are common in the prior art are solved.
Description
Technical Field
The invention relates to the field of remote sensing imaging, in particular to a dynamic tracking and detecting device and method for a remote sensing satellite ultra-wide band spectrum.
Background
Imaging spectrometers are widely used in the fields of space detection, aerospace remote sensing, address analysis, environmental monitoring, and military reconnaissance. The imaging spectrometer can acquire two-dimensional space image information of the target, and can acquire spectrum information of the target point, so that timing, positioning, shaping and quantitative analysis of the target are realized.
The spectral technology adopted by ultra-wide band spectrum directly influences the structure, volume, weight and cost of the spectrometer, and the dispersive imaging spectrometer is widely applied with the advantages of good light skin linearity, technical maturity and the like. The common spectrometer has incomplete measurement wave band, limited optical path layout, large equipment volume and poor capability of detecting and tracking dynamic targets. Therefore, the prior art needs to be improved, a more reasonable technical scheme is provided, and the problems existing in the prior art are solved.
Disclosure of Invention
The invention provides a remote sensing satellite ultra-wide band spectrum dynamic tracking detection device and method through a reagent paper strip color change value, which are used for solving the technical problems of incomplete measurement band, limited light path layout, large equipment volume and poor capability of detecting and tracking dynamic targets of a spectrometer which is common in the prior art.
In a first aspect, the invention provides a dynamic tracking and detecting device for ultra-wide band spectrum of a remote sensing satellite, which comprises a scanning turning mirror, an imaging lens, an optical switch, a long-wave spectroscope, a long-wave converging lens group, a long-wave imaging unit, a Fourier spectrum measuring unit, a short-wave spectroscope, a short-wave converging lens group, a visible and near-infrared imaging unit, a grating spectrum measuring unit and a processor; the scanning rotating mirror, the optical switch, the long-wave imaging unit, the Fourier spectrum measuring unit, the visible and near infrared imaging unit and the grating spectrum measuring unit are electrically connected with the processor; wherein,
The light passes through the scanning rotating mirror and the imaging lens and then reaches the optical switch, and the optical switch is used for controlling the on-off state of the micro mirror to reflect the light to the long-wave spectroscope or the short-wave spectroscope;
the long-wave spectroscope is used for transmitting long-wave infrared rays of a preset imaging wave band part to the long-wave imaging unit to realize imaging, and reflecting the long-wave infrared rays of the rest part of the preset imaging wave band and other wave band rays to the Fourier spectrum measuring unit to realize spectrum acquisition;
The short wave spectroscope is used for transmitting visible and near infrared light parts of a preset imaging wave band to the visible and near infrared imaging unit to realize imaging, and reflecting the residual visible and near infrared light of the preset imaging wave band to the grating spectrum measuring unit to realize spectrum acquisition;
The processor is used for fusing the images corresponding to the long-wave imaging unit and the visible and near-infrared imaging unit, acquiring the characteristic points, and controlling the scanning rotating mirror to rotate so as to adjust the target area corresponding to the azimuth alignment characteristic points.
Preferably, the long wave imaging unit is an FPA imaging unit.
Preferably, the visible and near infrared imaging units are CDD imaging units.
Preferably, the optical switch is a DMD digital micro-optic element.
Preferably, the visible and near infrared imaging units are consistent with the pixel aspect ratio of the DMD digital micro-optic element.
Preferably, the predetermined imaging band is an ultra-wide band of long-wave infrared, visible infrared and near infrared.
Preferably, the long-wave spectroscope and the short-wave spectroscope are respectively plated with a double-layer antireflection film, the long-wave spectroscope transmits 50% of the long-wave infrared light to the long-wave imaging unit, and the rest short-wave, medium-wave and 50% of the long-wave infrared light are reflected to the Fourier spectrum measuring unit;
the short wave spectroscope transmits 50% of visible and near infrared rays to the visible and near infrared imaging unit, and the rest of visible and near infrared rays are reflected to the grating type spectrum measuring unit.
Preferably, a long-wave imaging lens group is arranged between the long-wave spectroscope and the long-wave imaging unit, and the long-wave imaging lens group is used for compensating and correcting the long-wave imaging quality;
The short wave spectroscope and the visible and near infrared imaging units comprise visible and near infrared imaging perspective groups, and the near infrared imaging perspective groups are used for compensating and correcting visible and infrared imaging quality.
In a second aspect, the invention provides a detection method based on a remote sensing satellite ultra-wideband spectrum dynamic tracking device, which comprises the following steps:
Acquiring a long-wave infrared image sequence of a target object corresponding to the characteristic points through a long-wave imaging unit, and simultaneously acquiring visible infrared image sequences of the visible and infrared imaging units tracking the target object;
Respectively acquiring long infrared imaging characteristic points and visible and near infrared imaging characteristic points of a target object;
Fusing the long infrared imaging characteristic points with the visible and near infrared imaging characteristic points, and obtaining fused imaging characteristic points;
Controlling the scanning rotating mirror to align the fused imaging characteristic points;
Fusing the spectrums of the characteristic points through a Fourier spectrum measuring unit and a grating spectrum measuring unit;
And fusing the visible, infrared and long-wave infrared images with the spectrum information to obtain image information and spectrum information corresponding to the target.
Preferably, the predetermined imaging band is an ultra-wide band of long-wave infrared, visible and near infrared.
In summary, the embodiment of the invention provides a dynamic tracking and detecting device and method for ultra-wide band spectrum of various remote sensing satellites. Wherein, detection device includes: the device comprises a scanning turning mirror, an imaging lens, an optical switch, a long-wave spectroscope, a long-wave converging lens group, a long-wave imaging unit, a Fourier spectrum measuring unit, a short-wave spectroscope, a short-wave converging lens group, a visible and near-infrared imaging unit, a grating spectrum measuring unit and a processor; the scanning rotating mirror, the optical switch, the long-wave imaging unit, the Fourier spectrum measuring unit, the visible and near infrared imaging unit and the grating spectrum measuring unit are electrically connected with the processor; the light passes through the scanning rotating mirror and the imaging lens and then reaches the optical switch, and the optical switch is used for controlling the on-off state of the micro mirror to reflect the light to the long-wave spectroscope or the short-wave spectroscope; the long-wave spectroscope is used for transmitting long-wave infrared rays of a preset imaging wave band part to the long-wave imaging unit to realize imaging, and reflecting the long-wave infrared rays of the rest part of the preset imaging wave band and other wave band rays to the Fourier spectrum measuring unit to realize spectrum acquisition; the short wave spectroscope is used for transmitting visible and near infrared light parts of a preset imaging wave band to the visible and near infrared imaging unit to realize imaging, and reflecting the residual visible and near infrared light of the preset imaging wave band to the grating spectrum measuring unit to realize spectrum acquisition; the processor is used for fusing the images corresponding to the long-wave imaging unit and the visible and near-infrared imaging unit, acquiring the characteristic points, and controlling the scanning rotating mirror to rotate so as to adjust the target area corresponding to the azimuth alignment characteristic points. Identifying a target through long-wave infrared imaging and visible and near infrared imaging, and guiding a scanning rotating mirror to dynamically track characteristic points; by controlling the on-off state of the optical switch, image information and spectrum information corresponding to characteristic points of the long-wave imaging unit, the Fourier spectrum measuring unit, the visible near-infrared imaging unit and the grating spectrum measuring unit in a target area are respectively obtained, and a dynamic target is accurately identified and tracked. Therefore, the technical problems of incomplete measuring wave band, limited light path layout, large equipment volume and poor capability of detecting and tracking dynamic targets of the spectrometer which are common in the prior art are solved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of a remote sensing satellite ultra-wideband spectrum dynamic tracking and detecting device according to an embodiment of the present invention;
FIG. 2 is a frame diagram of a remote sensing satellite ultra-wide band spectrum dynamic tracking detection device provided by the embodiment of the invention;
fig. 3 is a flowchart of the invention for dynamic tracking and detecting of ultra-wide band spectrum of a remote sensing satellite according to an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Referring to fig.1 to 2, the dynamic tracking and detecting device for ultra-wideband spectrum of remote sensing satellite provided by the present invention includes a scanning turning mirror 10, an imaging lens 20, an optical switch 40, a long-wave spectroscope 150, a long-wave converging lens group 130, a long-wave imaging unit 80, a fourier spectrum measuring unit 90, a short-wave spectroscope 140, a short-wave converging lens group 100, a visible and near-infrared imaging unit 50, a grating spectrum measuring unit 120 and a processor 30; the scanning rotating mirror 10, the optical switch 40, the long wave imaging unit 80, the Fourier spectrum measuring unit 90, the visible and near infrared imaging unit 50 and the grating spectrum measuring unit 120 are all electrically connected with the processor 30; wherein,
The light passes through the scanning turning mirror 10 and the imaging lens 20 and then reaches the optical switch 40, and the optical switch 40 is used for controlling the on-off state of the micro mirror to reflect the light to the long-wave spectroscope 150 or the short-wave spectroscope 140;
the long-wave spectroscope 150 is used for transmitting the long-wave infrared light of the predetermined imaging band part to the long-wave imaging unit 80 to realize imaging, and reflecting the long-wave infrared light of the remaining predetermined imaging band part and the light of other bands to the fourier spectrum measuring unit 90 to realize spectrum acquisition;
The short-wave spectroscope 140 is used for transmitting the visible light and the near-infrared light of the preset imaging wave band to the visible light and near-infrared imaging unit 50 to realize imaging, and reflecting the residual visible light and near-infrared light of the preset imaging wave band to the grating spectrum measuring unit 120 to realize spectrum acquisition;
The processor 30 is used for fusing the long wave imaging unit 80 with the images corresponding to the visible and near infrared imaging unit 50, acquiring the feature points, and controlling the scanning rotating mirror 10 to rotate so as to adjust the target area corresponding to the azimuth alignment feature points.
The scanning rotating mirror 10 is connected with the processor 30 and is used for receiving 400 nm-14000 nm light rays corresponding to the target area; the processor 30 is configured to control the scanning rotary mirror 10 to align with the target area via a corresponding servo motor of the scanning rotary mirror 10. The light of 400 nm-14000 nm reaches the optical switch 40 after passing through the scanning rotating mirror 10 and the imaging lens 20, and the optical switch 40 is used for controlling the on-off state of the micro mirror to reflect the light to the long-wave spectroscope 150 or the short-wave spectroscope 140. The long-wave spectroscope 150 is used for transmitting 4200 nm-4500 nm long-wave infrared light rays of a preset imaging wave band part to the long-wave imaging unit 80 to realize imaging, and reflecting the long-wave infrared light rays of the rest part of the preset imaging wave band and light rays of other wave bands to the fourier spectrum measuring unit 90 to realize spectrum acquisition; the short-wave spectroscope 140 is used for transmitting visible light and near-infrared light of 400 nm-1000 nm of a preset imaging wave band to the visible and near-infrared imaging unit 50 to realize imaging, and reflecting the residual visible and near-infrared light of the preset imaging wave band to the grating spectrum measuring unit 120 to realize spectrum acquisition; preferably, the predetermined imaging band is an ultra-wide band of long-wave infrared, visible infrared and near infrared.
Acquiring a long-wave infrared image sequence of the target object corresponding to the characteristic points through the long-wave imaging unit 80, and simultaneously acquiring a visible infrared image sequence of the target object tracked by the visible and infrared imaging unit 50; respectively acquiring long infrared imaging characteristic points and visible and near infrared imaging characteristic points of a target object; fusing the long infrared imaging characteristic points with the visible and near infrared imaging characteristic points, and obtaining fused imaging characteristic points; controlling the scanning rotating mirror 10 to align the fused imaging characteristic points; fusing the spectrums of the characteristic points through the Fourier spectrum measuring unit 90 and the grating spectrum measuring unit 120; and fusing the visible, infrared and long-wave infrared images with the spectrum information to obtain image information and spectrum information corresponding to the target.
After obtaining the image information and the spectrum information corresponding to the target, the processor 30 controls the scanning rotating mirror 10 to rotate so as to adjust the target area corresponding to the azimuth alignment feature point; meanwhile, the processor 30 controls the micro-mirrors corresponding to the feature points corresponding to the target area received by the optical switch 40 to be turned on, and obtains the image information and the spectrum information corresponding to the target area through the long-wave imaging unit 80 and the fourier spectrum measuring unit 90, so as to further dynamically track the target area. Identifying a target through long-wave infrared imaging and visible and near infrared imaging, and guiding the scanning rotating mirror 10 to dynamically track characteristic points; by controlling the on-off state of the optical switch 40, the image information and the spectrum information corresponding to the characteristic points of the long wave imaging unit 80 and the fourier spectrum measuring unit 90 and the visible near infrared imaging unit 50 and the grating spectrum measuring unit 120 in the target area are respectively acquired, and the dynamic target is accurately identified and tracked. Therefore, the technical problems of incomplete measuring wave band, limited light path layout, large equipment volume and poor capability of detecting and tracking dynamic targets of the spectrometer which are common in the prior art are solved.
Preferably, long wave imaging unit 80 is a FPA imaging unit. The long wave imaging unit 80 may employ an FPA (focal PLANE ARRAY ) imaging unit.
Preferably, the visible and near infrared imaging unit 50 is a CDD imaging unit.
Preferably, the optical switch 40 is a DMD digital micro-optic element. The optical switch 40 is a DMD digital micro-optic element,
Preferably, the visible and near infrared imaging unit 50 is consistent with the pixel aspect ratio of the DMD digital micro-optic. When the near infrared imaging unit is a CDD imaging unit, the aspect ratio of pixels of the CDD imaging unit and the DMD digital micro-optical element is consistent, and each pixel of the CDD imaging unit and the DMD digital micro-optical element corresponds to one spectrum information in the measuring process.
Preferably, the long-wave spectroscope 150 and the short-wave spectroscope 140 are respectively coated with a double-layer antireflection film, the long-wave spectroscope 150 transmits 50% of the long-wave infrared light to the long-wave imaging unit 80, and the rest of the short-wave, medium-wave and 50% of the long-wave infrared light is reflected to the fourier spectrum measuring unit 90; the short-wave beam splitter 140 transmits 50% of the visible and near-infrared light to the visible and near-infrared imaging unit 50, and the remaining visible and near-infrared light is reflected to the grating spectrum measuring unit 120.
Preferably, a long-wave imaging lens group 70 is included between the long-wave spectroscope 150 and the long-wave imaging unit 80, and the long-wave imaging lens group 70 is used for compensating and correcting the long-wave imaging quality; the compensation and correction of the long-wave imaging quality can be realized, and the stability of the measurement result is improved.
The short wave spectroscope 140 and the visible and near infrared imaging unit 50 comprise a visible and near infrared imaging perspective group 60, and the near infrared imaging perspective group 60 is used for compensating and correcting visible and infrared imaging quality; the compensation and correction of the visible and infrared imaging quality can be realized, and the stability of the measurement result is improved.
In a second aspect, the invention provides a detection method based on a remote sensing satellite ultra-wideband spectrum dynamic tracking device, which comprises the following steps:
step S101, a long-wave imaging unit is used for acquiring a long-wave infrared image sequence of a target object corresponding to the characteristic points, and a visible infrared image sequence of a target object tracked by a visible and infrared imaging unit is acquired.
A long-wave infrared image sequence of the target object corresponding to the feature points is acquired by the long-wave imaging unit 80, and a visible infrared image sequence of the target object tracked by the visible and infrared imaging unit 50 is acquired.
Step S102, respectively acquiring long infrared imaging characteristic points and visible and near infrared imaging characteristic points of a target object;
Respectively acquiring long infrared imaging characteristic points (x 1,y1) and visible and near infrared imaging characteristic points (x 1,y2) of a target object; and simultaneously outputting a long infrared imaging characteristic point (x 1,y1) and visible and near infrared imaging characteristic points (x 1,y2).
Step S103, fusing the long infrared imaging characteristic points and the visible and near infrared imaging characteristic points, and obtaining fused imaging characteristic points;
And carrying out feature point fusion on the long infrared imaging feature point (x 1,y1) and the visible and near infrared imaging feature point (x 1,y2) to obtain target feature points (x, y).
Step S104, controlling the scanning rotating mirror to align the fused imaging characteristic points;
The controller controls the scanning rotating mirror 10 to align with the target characteristic points (x, y), and the target characteristic points (x, y) are moved for spectrum acquisition.
Step S105, fusing the spectrums of the characteristic points through a Fourier spectrum measuring unit and a grating spectrum measuring unit;
The fourier spectrum measuring unit 90 and the grating spectrum measuring unit 120 are fused to the spectrum of the feature point.
And S106, fusing the visible, infrared and long-wave infrared images with the spectrum information to obtain image information and spectrum information corresponding to the target.
After obtaining the image information and the spectrum information corresponding to the target, the processor 30 controls the scanning rotating mirror 10 to rotate so as to adjust the target area corresponding to the azimuth alignment feature point; meanwhile, the processor 30 controls the micro-mirrors corresponding to the feature points corresponding to the target area received by the optical switch 40 to be turned on, and obtains the image information and the spectrum information corresponding to the target area through the long-wave imaging unit 80 and the fourier spectrum measuring unit 90, so as to further dynamically track the target area. Identifying a target through long-wave infrared imaging and visible and near infrared imaging, and guiding the scanning rotating mirror 10 to dynamically track characteristic points; by controlling the on-off state of the optical switch 40, the image information and the spectrum information corresponding to the characteristic points of the long wave imaging unit 80 and the fourier spectrum measuring unit 90 and the visible near infrared imaging unit 50 and the grating spectrum measuring unit 120 in the target area are respectively acquired, and the dynamic target is accurately identified and tracked. Therefore, the technical problems of incomplete measuring wave band, limited light path layout, large equipment volume and poor capability of detecting and tracking dynamic targets of the spectrometer which are common in the prior art are solved.
Preferably, the predetermined imaging band is an ultra-wide band of long-wave infrared, visible and near infrared.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present invention may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
In summary, the foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The remote sensing satellite ultra-wide band spectrum dynamic tracking detection device is characterized by comprising a scanning rotating mirror, an imaging lens, an optical switch, a long-wave spectroscope, a long-wave converging lens group, a long-wave imaging unit, a Fourier spectrum measuring unit, a short-wave spectroscope, a short-wave converging lens group, a visible and near-infrared imaging unit, a grating spectrum measuring unit and a processor; the scanning rotating mirror, the optical switch, the long-wave imaging unit, the Fourier spectrum measuring unit, the visible and near infrared imaging unit and the grating spectrum measuring unit are electrically connected with the processor; wherein,
The light passes through the scanning rotating mirror and the imaging lens and then reaches an optical switch, and the optical switch is used for controlling the on-off state of the micro mirror to reflect the light to the long-wave spectroscope or the short-wave spectroscope;
the long-wave spectroscope is used for transmitting long-wave infrared rays of a preset imaging wave band part to the long-wave imaging unit to realize imaging, and reflecting long-wave infrared rays of the rest part of the preset imaging wave band and rays of other wave bands to the Fourier spectrum measuring unit to realize spectrum acquisition;
the short wave spectroscope is used for transmitting visible light and near infrared light of a preset imaging wave band to the visible and near infrared imaging unit to realize imaging, and reflecting the residual visible light and near infrared light of the preset imaging wave band to the grating spectrum measuring unit to realize spectrum acquisition;
The processor is used for fusing the long wave imaging unit and the images corresponding to the visible and near infrared imaging units, acquiring characteristic points and controlling the scanning rotating mirror to rotate so as to adjust the target area corresponding to the azimuth alignment characteristic points.
2. The dynamic tracking and detecting device for ultra-wideband spectrum of remote sensing satellite according to claim 1, wherein the long wave imaging unit is an FPA imaging unit.
3. The device for dynamically tracking and detecting ultra-wideband spectrum of remote sensing satellite according to claim 1, wherein the visible and near infrared imaging unit is a CDD imaging unit.
4. The dynamic tracking and detecting device for ultra-wideband spectrum of remote sensing satellite according to claim 1, wherein the optical switch is a DMD digital micro-optical element.
5. The device of claim 4, wherein the visible and near infrared imaging units are consistent with the aspect ratio of pixels of the DMD digital micro-optical element.
6. The dynamic tracking and detecting device for ultra-wideband spectrum of remote sensing satellite according to claim 1, wherein the predetermined imaging band is ultra-wideband of long-wave infrared, visible infrared and near infrared.
7. The dynamic tracking and detecting device for ultra-wideband spectrum of remote sensing satellite according to claim 1, wherein the long-wave spectroscope and the short-wave spectroscope are respectively coated with a double-layer antireflection film, 50% of long-wave infrared light is transmitted to the long-wave imaging unit by the long-wave spectroscope, and the rest of short-wave, medium-wave and 50% of long-wave infrared light is reflected to the fourier spectrum measuring unit;
The short wave spectroscope transmits 50% of visible and near infrared rays to the visible and near infrared imaging unit, and the rest visible and near infrared rays are reflected to the grating type spectrum measuring unit.
8. The dynamic tracking and detecting device for ultra-wideband spectrum of remote sensing satellite according to claim 1, wherein a long-wave imaging lens group is arranged between the long-wave spectroscope and the long-wave imaging unit, and the long-wave imaging lens group is used for compensating and correcting long-wave imaging quality;
The short wave spectroscope and the visible and near infrared imaging units comprise visible and near infrared imaging perspective groups, and the near infrared imaging perspective groups are used for compensating and correcting visible and infrared imaging quality.
9. A method of detection based on the device of any one of claims 1 to 8, characterized in that it comprises the steps of:
Acquiring a long-wave infrared image sequence of a target object corresponding to the characteristic points through the long-wave imaging unit, and simultaneously acquiring a visible infrared image sequence of a target object tracked by the visible and infrared imaging unit;
Respectively acquiring long infrared imaging characteristic points and visible and near infrared imaging characteristic points of a target object;
Fusing the long infrared imaging characteristic points with the visible and near infrared imaging characteristic points, and obtaining fused imaging characteristic points;
Controlling the scanning rotating mirror to align the fused imaging characteristic points;
fusing the spectrums of the characteristic points through the Fourier spectrum measuring unit and the grating spectrum measuring unit;
And fusing the visible, infrared and long-wave infrared images with the spectrum information to obtain image information and spectrum information corresponding to the target.
10. The method of claim 9, wherein the predetermined imaging band is an ultra-wide band of long-wave infrared, visible, and near-infrared.
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