A method and system for constructing a fast positioning model of a space camera detector

Abstract

The application discloses a kind of aerospace camera detector fast positioning model construction method and system, wherein the method includes the following steps: establishing camera main body model simplified model;Establishing detector assembly model simplified model;Creating detector assembly adjustment gasket model;Adjusting the offset of detector assembly model image plane adjustment datum plane;Adjust the spatial position of detector assembly gasket movable surface;Detector gasket automatic mapping, detector completes fast positioning.The present application can realize the fast assembly of space mapping camera detector, while meeting the requirements of each field of view confocal and linear array level.

Description

TECHNICAL FIELD

[0001] The application relates to a method and system for constructing a fast positioning model of a space camera detector, and belongs to the technical field of space optical remote sensors. BACKGROUND

[0002] A space survey camera is important technical equipment for civilian and military map making, and its imaging quality and geometric characteristic indexes are crucial. High-quality imaging capability, stable view axis angle, internal orientation elements, distortion and linear array parallelism are necessary conditions for the survey camera.

[0003] After the optical assembly of the lens is completed, the lens assembly needs to be integrated with the detector assembly to realize accurate docking of the lens and the detector assembly and ensure that the defocus amount of each field of view and the linear array level of the detector assembly meet the technical requirements. Due to the excellent imaging quality of the off-axis reflective camera, more and more space survey cameras adopt this optical system design form. However, the defocus amount of each field of view and the linear array level will be coupled and interfered with each other when the detector assembly is adjusted. The model constructed by the traditional detector positioning model construction method needs to be repeatedly tried, which is low in efficiency. Therefore, a more efficient method is needed to realize the fast adjustment of the detector of the space survey camera. SUMMARY

[0004] The technical problem solved by the application is to overcome the shortcomings of the prior art and provide a method for constructing a fast positioning model of a space camera detector, which can realize the fast adjustment of the detector of the space survey camera and meet the requirements of the co-focus of each field of view and the linear array level.

[0005] The object of the application is achieved by the following technical solutions.

[0006] A method for constructing a fast positioning model of a space camera detector, comprising the following steps:

[0007] (1) establishing a simplified model of the camera main body model and determining the fixed surface of the detector assembly gasket end;

[0008] (2) establishing a simplified model of the detector assembly model, comprising:

[0009] (2.1) placing the detector assembly model in the ideal position of the simplified model of the camera main body model fixed in step (1);

[0010] (2.2) constructing a detector assembly mounting surface (3), which is initially set to coincide with the detector assembly model and is adjusted to be floating after the coincidence is completed, serving as the movable surface of the detector assembly gasket end;

[0011] (2.3) Constructing an image plane square (4) which is set to coincide with the ideal image element photosensitive surface of the detector on the detector assembly model and is set to be fixed as the detector imaging plane adjustment reference plane;

[0012] (2.4) Constructing a detector imaging plane (5) which is set to coincide with the ideal image element photosensitive surface of the detector on the detector assembly model and is set to be floating after coincidence is completed as the detector assembly model image plane adjustment plane;

[0013] (2.5) Creating a detector imaging reference area ABCD in the image plane square (4) constructed in step (2.3);

[0014] (2.6) Constructing a detector imaging adjustment area A'B'C'D' in the detector imaging plane (5) constructed in step (2.4);

[0015] (2.7) Establishing a follow-up relationship between the detector assembly mounting plane (3) constructed in step (2.2) and the detector imaging plane (5) constructed in step (2.4) to ensure that the relative positions of the two planes in space remain integrated;

[0016] (3) Constructing a detector assembly spacer model: creating a sketch on the camera mounting plane (1) according to the size of the detector assembly spacer (2) and mapping to the detector assembly mounting plane (3) established in step (2.2);

[0017] (4) Setting the offset amount of the detector imaging plane (5) constructed in step (2.4) and the image plane square (4) constructed in step (2.3) according to the actual measured defocus amount, line array level, and view principal point deviation amount;

[0018] (5) The detector assembly mounting plane (3) constructed in step (2.2) follows the detector imaging plane (5) constructed in step (2.4) to a new spatial position;

[0019] (6) The detector assembly adjustment spacer model constructed in step (3) is automatically stretched and mapped to the detector assembly mounting plane (3) in the new spatial position, completing the shape update of the detector mounting spacer (2) and thereby quickly obtaining the thickness of each corner point of the detector assembly adjustment spacer (2).

[0020] Further, the simplified model of the camera main body model is established in step (1), and the fixed end surface of the detector assembly spacer is determined, specifically:

[0021] (1.1) Setting the simplified model of the camera main body model to be fixed;

[0022] (1.2) Constructing a camera mounting plane (1) which is set to coincide with the simplified model of the camera main body model and is fixed to determine the fixed end surface of the detector assembly spacer.

[0023] Further, the step (2.5) creates a detector imaging reference area ABCD in the image plane (4), specifically:

[0024] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0025] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0026] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0027] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0028] Further, the step (2.5) creates a detector imaging reference area ABCD in the image plane (4), specifically:

[0029] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0030] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0031] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0032] When the detector is a linear array device, the length of the detector imaging reference area AB, CD is L=N*d, and the width of the area AD, BC is B=total width of the spectral segment; L is long, and B is wide.

[0033] Further, the step (4) sets the offset amount of the built detector imaging plane (5) and the built image plane (4) according to the measured defocus amount of each field of view, linear array level, and main point deviation amount, specifically:

[0034] (A-A'), (B-B'), (C-C'), (D-D') are the offset amounts on the normal line of the built image plane (4), obtained from the measured defocus amount of each field of view;

[0035] (AB-A'B'), (CD-C'D') are the rotation amounts around point O in the built image plane (4), obtained from the measured detector linear array level offset amount;

[0036] (O-O') is the offset along the AB, CD lines in the image plane (4) built, obtained from the measured visual principal point deviation.

[0037] Further, the application also proposes a space camera detector fast positioning model construction system, comprising:

[0038] The camera body model simplification model establishment module sets the camera body model as fixed; constructs a camera mounting surface, sets it as coinciding with the corresponding detector assembly mounting surface on the camera body model and sets it as fixed, and determines it as the non-moving surface of the detector assembly gasket end;

[0039] The detector assembly model simplification model establishment module places the detector assembly model at the theoretical position of the fixed camera body model; constructs a detector assembly mounting surface, sets it as coinciding with the corresponding detector assembly mounting surface on the detector assembly model and sets it as floating, as the movable surface of the detector assembly gasket end; constructs an image plane (4) and sets it as coinciding with the detector ideal image element photosensitive surface on the detector assembly model and sets it as fixed, as the detector imaging surface adjustment reference surface; constructs a detector imaging surface and sets it as coinciding with the detector ideal image element photosensitive surface on the detector assembly model and sets it as floating, as the detector assembly model image surface adjustment surface; constructs a detector imaging reference area ABCD in the image plane; constructs a detector imaging adjustment area A'B'C'D' in the detector imaging surface; establishes the follow-up relationship between the detector assembly mounting surface and the detector imaging surface, and ensures that the relative positions of the two planes in space remain integrated;

[0040] The detector assembly adjustment gasket model creation module creates a detector assembly adjustment gasket model, and establishes a sketch on the camera mounting surface according to the detector adjustment gasket size and maps it to the detector assembly mounting surface;

[0041] The offset setting module sets the offset of the built detector imaging surface and the built image plane according to the measured defocus amount, line array level, and visual principal point deviation;

[0042] The spatial position adjustment module adjusts the spatial position of the built detector assembly mounting surface to follow the detector imaging surface to a new spatial position;

[0043] The automatic mapping positioning module automatically maps the built detector assembly adjustment gasket model to the detector assembly mounting surface in the new spatial position, completes the shape update of the detector mounting gasket, and thus quickly obtains the thickness of each corner point of the detector assembly adjustment gasket.

[0044] Compared with the prior art, the application has the following beneficial effects:

[0045] The application can significantly improve the detector installation efficiency of a space mapping camera, can quickly and accurately complete the detector installation, is beneficial to batch production, and is beneficial to shorten the product development cycle. BRIEF DESCRIPTION OF DRAWINGS

[0046] 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 accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0047] Figure 1 is a detector fast positioning model schematic diagram constructed by the space camera detector fast positioning model construction method provided by the embodiment of the application.

[0048] Figure 2 is a detector component gasket schematic diagram calculated by the detector fast positioning system constructed by the space camera detector fast positioning model construction method provided by the embodiment of the application. DETAILED DESCRIPTION

[0049] Exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0050] Simplifying the complex space model of installing the detector component on the camera body through the detector component gasket 2 comprises: ① constructing the equivalent relationship of the camera mounting surface 1, the image plane 4 and the camera body model; ② constructing the equivalent relationship of the detector component mounting surface 3, the detector imaging surface 5 and the detector component model; ③ fixing the detector installation gasket sketch on the camera mounting surface 1, and stretching to the detector component mounting surface 3. After the detector component mounting surface 3 and the detector imaging surface 5 are coupled and linked in space, the detector installation gasket 2 is automatically stretched to the detector component mounting surface 3 in the new space position, and the shape updating of the detector component gasket 2 is completed.

[0051] Method embodiment

[0052] As shown in Figure 1 , the space camera detector fast positioning model construction method of the embodiment comprises the following steps:

[0053] (1) Establish a simplified model of the camera body model, determine the non-moving surface of the detector assembly gasket end;

[0054] (1.1) Set the simplified model of the camera body model as fixed;

[0055] (1.2) Build the camera mounting surface 1, set it to coincide with the simplified model of the camera body model and fix it, and determine it as the non-moving surface of the detector assembly gasket end.

[0056] (2) Establish a simplified model of the detector assembly model, including:

[0057] (2.1) Place the detector assembly model in the ideal position relative to the simplified model of the camera body model fixed in step (1);

[0058] (2.2) Build the detector assembly mounting surface 3, initially set it to coincide with the detector assembly model, and after completing the coincidence, adjust it to be floating, as the moving surface of the detector assembly gasket end;

[0059] (2.3) Build the image plane 4, set it to coincide with the ideal image element photosensitive surface of the detector on the detector assembly model and set it as fixed, as the imaging surface of the detector adjustment reference surface;

[0060] (2.4) Build the detector imaging surface 5, set it to coincide with the ideal image element photosensitive surface of the detector on the detector assembly model, and after completing the coincidence, adjust it to be floating, as the image surface adjustment surface of the detector assembly model;

[0061] (2.5) Create the detector imaging reference area ABCD in the image plane 4 built in step (2.3);

[0062] Create the detector imaging reference area ABCD in the image plane 4, specifically:

[0063] When the detector is a linear array device, the length AB and CD of the detector imaging reference area are both L=N*d, and the width AD and BC of the area are both B=total spectral width; L is the length and B is the width;

[0064] When the detector is a linear array device, the length AB and CD of the detector imaging reference area are both L=N*d; the width AD and BC of the area are both B=N*d, N is the total image element, and d is the image element size;

[0065] When the detector is a linear array device, the center O of the detector imaging reference area is located at the center of the total length of the visible channel linear array;

[0066] When the detector is a linear array device, the center O of the detector imaging reference area is located at the center of the entire device.

[0067] (2.6) Constructing a detector imaging adjustment region A'B'C'D' in the detector imaging plane 5 constructed in step (2.4);

[0068] Constructing a detector imaging adjustment region A'B'C'D' in the detector imaging plane 5, specifically:

[0069] When the detector is a linear array device, the detector imaging reference region length A'B', C'D' is L=N*d, and the region width A'D', B'C' is B=total spectral band width; L is length, and B is width;

[0070] When the detector is a linear array device, the detector imaging reference region length A'B', C'D' is L=N*d; and the region width A'D', B'C' is B=N*d, N is total pixels, and d is pixel size;

[0071] When the detector is a linear array device, the detector imaging reference region center O' is located at the pointing point of the visual axis in the linear array of the visible channel;

[0072] When the detector is a linear array device, the detector imaging reference region center O' is located at the pointing point of the visual axis in the linear array of the visible channel.

[0073] (2.7) Establishing a follow-up relationship between the detector assembly mounting plane 3 established in step (2.2) and the detector imaging plane (5) established in step (2.4), to ensure that the relative positions of the two planes remain integrated in space;

[0074] (3) Constructing a detector assembly spacer model: establishing a sketch on the camera mounting plane 1 according to the size of the detector assembly spacer 2, and mapping to the detector assembly mounting plane 3 established in step (2.2);

[0075] (4) Setting the offset amount of the detector imaging plane 5 established in step (2.4) and the image plane 4 established in step (2.3) according to the measured defocus amount, linear array level, and visual principal point deviation amount of each field of view;

[0076] Specifically:

[0077] (A-A'), (B-B'), (C-C'), (D-D') are offset amounts on the normal line of the established image plane 4, obtained from the measured defocus amount of each field of view;

[0078] (AB-A'B'), (CD-C'D') are rotation amounts around point O in the established image plane 4, obtained from the measured detector linear array level offset amount;

[0079] (O-O') is the offset amount along the AB and CD lines in the established image plane 4, obtained from the measured visual principal point deviation amount.

[0080] (5) The detector assembly mounting surface 3 built in step (2.2) is moved to a new spatial position following the detector imaging surface 5 built in step (2.4);

[0081] (6) The detector assembly adjustment gasket model built in step (3) is automatically stretched to the detector assembly mounting surface 3 in the new spatial position, and the shape of the detector mounting gasket 2 is updated, so that the thickness of each corner point of the detector assembly adjustment gasket 2 is quickly obtained.

[0082] The application also provides a system for constructing a fast positioning model of a space camera detector, comprising:

[0083] The camera body model simplification model establishment module sets the camera body model as fixed, constructs a camera mounting surface, sets it as coinciding with the corresponding detector assembly mounting surface on the camera body model and fixed, and determines it as a non-moving surface at the gasket end of the detector assembly;

[0084] The detector assembly model simplification model establishment module places the detector assembly model at the theoretical position of the fixed camera body model, constructs a detector assembly mounting surface, sets it as coinciding with the corresponding detector assembly mounting surface on the detector assembly model and floating, and serves as a moving surface at the gasket end of the detector assembly, constructs an image plane 4, sets it as coinciding with the ideal image element photosensitive surface on the detector assembly model and fixed, and serves as an adjustment reference surface of the detector imaging surface, constructs a detector imaging surface, sets it as coinciding with the ideal image element photosensitive surface on the detector assembly model and floating, and serves as an image surface adjustment surface of the detector assembly model, constructs a detector imaging reference area ABCD on the image plane, constructs a detector imaging adjustment area A'B'C'D' on the detector imaging surface, and establishes a following relationship between the detector assembly mounting surface and the detector imaging surface, so that the relative positions of the two planes in space remain integrated;

[0085] The detector assembly adjustment gasket model creation module creates a detector assembly adjustment gasket model, and establishes a sketch on the camera mounting surface according to the size of the detector adjustment gasket and maps it to the detector assembly mounting surface;

[0086] The offset amount setting module sets the offset amount of the built detector imaging surface and the built image plane according to the measured defocus amount, line array level and view principal point deviation amount of each field of view;

[0087] The spatial position adjustment module moves the built detector assembly mounting surface following the detector imaging surface to a new spatial position;

[0088] The automatic mapping positioning module automatically maps the built detector assembly adjustment gasket model to the detector assembly mounting surface in the new spatial position, updates the shape of the detector mounting gasket, and thus quickly obtains the thickness of each corner point of the detector assembly adjustment gasket.

[0089] Following this embodiment, the model is constructed and system calculations are completed. The thickness of each corner point of the detector component pad is as follows: Figure 2 As shown, the data is summarized in the following table:

[0090]

[0091] The table shows the thickness values ​​of the four corner points of the spacers on both sides of the detector assembly, with a single calculation taking 5 minutes. The results demonstrate that the proposed method for constructing a rapid positioning model and system for a space camera detector is feasible.

[0092] The embodiments described above are merely preferred embodiments of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solutions of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for constructing a fast positioning model of a space camera detector, characterized in that, The method comprises the following steps: (1) establishing a simplified model of a camera main body model, and determining a non-moving surface of a detector assembly gasket end; (2) establishing a simplified model of a detector assembly model, comprising: (2.1) placing the detector assembly model in an ideal position relative to the simplified model of the camera main body model fixed in step (1); (2.2) constructing a detector assembly mounting surface (3), which is initially set to coincide with the detector assembly model and is adjusted to be floating after coincidence is achieved, serving as a movable surface of the detector assembly gasket end; (2.3) constructing an image plane (4), which is set to coincide with the ideal image element photosensitive surface of the detector on the detector assembly model and is set to be fixed, serving as an imaging surface adjustment reference surface of the detector; (2.4) constructing a detector imaging surface (5), which is set to coincide with the ideal image element photosensitive surface of the detector on the detector assembly model and is adjusted to be floating after coincidence is achieved, serving as an imaging surface adjustment surface of the detector assembly model; (2.5) creating a detector imaging reference area ABCD in the image plane (4) constructed in step (2.3); (2.6) constructing a detector imaging adjustment area A'B'C'D' in the detector imaging surface (5) constructed in step (2.4); (2.7) establishing a follow-up relationship between the detector assembly mounting surface (3) constructed in step (2.2) and the detector imaging surface (5) constructed in step (2.4), so as to ensure that the relative positions of the two planes in space remain integrated; (3) constructing a detector assembly gasket model: establishing a sketch on the camera mounting surface (1) according to the size of the detector assembly gasket (2), and mapping to the detector assembly mounting surface (3) established in step (2.2); (4) setting the offset amount of the detector imaging surface (5) constructed in step (2.4) and the image plane (4) constructed in step (2.3) according to the measured defocus amount, linear array level, and view principal point deviation of each field of view; (5) moving the detector assembly mounting surface (3) constructed in step (2.2) to a new spatial position following the detector imaging surface (5) constructed in step (2.4); (6) automatically stretching the detector assembly adjustment gasket model constructed in step (3) to the detector assembly mounting surface (3) in the new spatial position, completing the shape update of the detector mounting gasket (2), so as to quickly obtain the thickness of each corner point of the detector assembly adjustment gasket (2).

2. The method of claim 1, wherein: In step (1), the simplified model of the camera main body model is established, and the non-moving surface of the detector assembly gasket end is determined, specifically as follows: (1.1) setting the simplified model of the camera main body model to be fixed; (1.2) constructing a camera mounting surface (1), which is set to coincide with the simplified model of the camera main body model and is fixed, and is determined as the non-moving surface of the detector assembly gasket end.

3. The method of claim 1, wherein: In step (2.5), the detector imaging reference area ABCD is created in the image plane (4), specifically as follows: When the detector is a linear array device, the lengths AB and CD of the detector imaging reference area are both L=N*d, and the widths AD and BC are both B=total spectral width; L is length, and B is width. When the detector is a surface array device, the imaging reference region length AB and CD of the detector is L=N*d; the region width AD and BC is B=N*d, N is the total number of pixels, and d is the pixel size; When the detector is a linear array device, the imaging reference region center O of the detector is located at the center of the total length of the visible channel linear array; When the detector is a surface array device, the imaging reference region center O of the detector is located at the center of the whole device.

4. The method of claim 1, wherein: The step (2.6) constructs a detector imaging adjustment region A'B'C'D' in the detector imaging surface (5), specifically: When the detector is a linear array device, the imaging reference region length A'B' and C'D' of the detector is L=N*d, and the region width A'D' and B'C' is B=total width of the spectral segment; L is long, and B is wide; When the detector is a surface array device, the imaging reference region length A'B' and C'D' of the detector is L=N*d; the region width A'D' and B'C' is B=N*d, N is the total number of pixels, and d is the pixel size; When the detector is a linear array device, the imaging reference region center O' of the detector is located at the pointing point of the visual axis in the visible channel linear array; When the detector is a surface array device, the imaging reference region center O' of the detector is located at the pointing point of the visual axis in the whole device.

5. The method of claim 1, wherein: The step (4) sets the offset amount of the constructed detector imaging surface (5) and the constructed image plane (4) according to the measured defocus amount, linear array level, and visual principal point deviation amount, specifically: (A-A'), (B-B'), (C-C'), (D-D') are the offset amounts on the normal line of the constructed image plane (4), which are obtained from the measured defocus amount of each field of view; (AB-A'B'), (CD-C'D') are the rotation amounts around point O in the constructed image plane (4), which are obtained from the measured detector linear array level offset amount; (O-O') is the offset amount along the AB and CD lines in the constructed image plane (4), which is obtained from the measured visual principal point deviation amount.

6. A system for constructing a fast positioning model of a space camera detector, characterized in that It comprises: A camera body model simplified model establishment module: set the camera body model as fixed; construct a camera mounting surface, set it to coincide with the corresponding detector assembly mounting surface on the camera body model and set it as fixed, and determine it as the fixed surface of the detector assembly gasket end; A detector assembly model simplified model establishment module: place the detector assembly model at the theoretical position of the fixed camera body model; construct a detector assembly mounting surface, set it to coincide with the corresponding detector assembly mounting surface of the detector assembly model, and set it as floating, as the movable surface of the detector assembly gasket end; construct an image plane (4) set to coincide with the ideal pixel photosensitive surface of the detector on the detector assembly model, and set it as fixed, as the detector imaging surface adjustment reference surface; construct a detector imaging surface set to coincide with the ideal pixel photosensitive surface of the detector on the detector assembly model, and set it as floating, as the detector assembly model image surface adjustment surface; construct a detector imaging reference region ABCD in the image plane; construct a detector imaging adjustment region A'B'C'D' in the detector imaging surface; establish a follow-up relationship between the detector assembly mounting surface and the detector imaging surface, to ensure that the relative positions of the two planes in space remain integrated; The detector assembly adjustment pad model creation module creates a detector assembly adjustment pad model, and establishes a sketch mapping to the detector assembly mounting surface according to the detector adjustment pad size on the camera mounting surface; The offset setting module sets the offset of the built detector imaging surface and the built image plane according to the measured defocus amount, line array level, and view main point deviation amount of each field of view; The spatial position adjustment module moves the built detector assembly mounting surface to a new spatial position along with the detector imaging surface; The automatic mapping positioning module automatically maps the built detector assembly adjustment pad model to the detector assembly mounting surface at the new spatial position, updates the shape of the detector mounting pad, and thus quickly obtains the thickness of each corner point of the detector assembly adjustment pad.

7. The system of claim 6, wherein: A detector imaging reference area ABCD is created in the image plane (4), specifically: When the detector is a line array device, the lengths AB and CD of the detector imaging reference area are both L=N*d, and the widths AD and BC are both B=total spectral width; L is long, and B is wide; When the detector is a surface array device, the lengths AB and CD of the detector imaging reference area are both L=N*d, and the widths AD and BC are both B=N*d, N is the total number of pixels, and d is the pixel size; When the detector is a line array device, the center O of the detector imaging reference area is located at the center of the total length of the visible channel line array; When the detector is a surface array device, the center O of the detector imaging reference area is located at the center of the entire device.

8. The system of claim 6, wherein: A detector imaging adjustment area A'B'C'D' is constructed in the detector imaging surface (5), specifically: When the detector is a line array device, the lengths A'B' and C'D' of the detector imaging reference area are both L=N*d, and the widths A'D' and B'C' are both B=total spectral width; L is long, and B is wide; When the detector is a surface array device, the lengths A'B' and C'D' of the detector imaging reference area are both L=N*d, and the widths A'D' and B'C' are both B=N*d, N is the total number of pixels, and d is the pixel size; When the detector is a line array device, the center O' of the detector imaging reference area is located at the pointing point of the optical axis in the visible channel line array; When the detector is a surface array device, the center O' of the detector imaging reference area is located at the pointing point of the optical axis in the entire device.

9. The system of claim 6, wherein: The offset of the built detector imaging surface (5) and the built image plane (4) is set according to the measured defocus amount, line array level, and view main point deviation amount of each field of view, specifically: (A-A'), (B-B'), (C-C'), and (D-D') are the offsets on the normal line of the built image plane (4), which are obtained from the measured defocus amount of each field of view; (AB-A'B') and (CD-C'D') are the rotation amounts around point O in the built image plane (4), which are obtained from the measured line array level offset of the detector; (O-O') is the offset along the AB and CD lines in the built image plane (4), which is obtained from the measured view main point deviation amount.

Images