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Line-surface-mixed CCD focal plane splicing system for three-dimensional mapping camera

A three-dimensional surveying and mapping camera and splicing system technology, applied in the direction of photographic devices, etc., can solve the problems of no triangular lock integration, low surveying and mapping accuracy of three-line array CCD cameras, and lack of connection point conditions for triangular lock models, so as to improve surveying and mapping accuracy and reduce requirements Effect

Inactive Publication Date: 2015-07-22
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The main reason for the low mapping accuracy of the traditional three-line array CCD camera is that the three-line array CCD flight line is composed of triangular locks with discrete intervals of "orientation time", and there are no special restrictions on the integration of many triangular locks in the adjustment. , especially the lack of effective joint point conditions between triangle lock models

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  • Line-surface-mixed CCD focal plane splicing system for three-dimensional mapping camera
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  • Line-surface-mixed CCD focal plane splicing system for three-dimensional mapping camera

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 As shown, the distance between the first pixel of the area array CCD 24 and the first pixel of the line array CCD 21 is 5.2 mm, the distance between the center of the area array CCD 24 in the Y direction is 62.86 mm, and the distance between the center of the area array CCD 24 and the line array CCD 21 is 5.2 mm. The distance between the centers of the CCD 21 in the X direction is 15.964mm.

[0017] In order to meet the requirements of surveying and mapping accuracy, the requirements for the spliced ​​focal plane components of the line-plane hybrid CCD focal plane of the stereo surveying camera are:

[0018] 1. Coplanarity of 5 CCD photosensitive elements: 0.005mm;

[0019] 2. Linearity of linear array CCD 21 pixel array: 0.002mm;

[0020] 3. Parallelism between area CCD 24 pixel array and linear CCD 21 pixel array: ...

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Abstract

The invention discloses a line-surface-mixed CCD focal plane splicing system for a three-dimensional mapping camera and belongs to the technical field of spatial optical remote sensing. The system comprises a splicing microscope, a microscope display device, a focal plane assembly to be spliced, a splicing tool, a two-dimensional adjustment table and a base, wherein the two-dimensional adjustment table is placed on the base; a splicing bracket is placed on the two-dimensional adjustment table; the focal plane assembly to be spliced is placed on the splicing bracket; the splicing microscope and the microscope display device are fixed to the base and are used for observing the focal plane assembly to be spliced. According to the line-surface-mixed CCD focal plane splicing system for the three-dimensional mapping camera, line-surface-mixed CCD focal planes of the three-dimensional mapping camera can be spliced, the position accuracy between a line array CCD and a surface array CCD provided for 5m ground resolution is met, photography measurement without ground control points can be achieved, the requirement on the stability of satellite attitude is reduced, and the mapping accuracy can be improved. The line-surface-mixed CCD focal plane splicing system for the three-dimensional mapping camera plays an important role in the first-generation transmission type three-dimensional Chinese mapping satellite.

Description

technical field [0001] The invention belongs to the technical field of space optics remote sensing, and in particular relates to a splicing system of a line-plane mixed CCD focal plane of a three-dimensional surveying and mapping camera. Background technique [0002] Transmission-type three-dimensional surveying and mapping satellites are an effective means of obtaining global geospatial information. They are used to quickly obtain three-dimensional three-dimensional images on a global scale. Through ground surveying and mapping processing, accurate three-dimensional positioning of strike targets is implemented to generate basic geographic information of the global framework. Provide fast and accurate geographic information support for global emergency operations and joint operations under the conditions of modern information warfare. [0003] The three-line array stereoscopic mapping camera is the key optical payload of the stereoscopic mapping satellite. It is composed of ...

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Application Information

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IPC IPC(8): G01C11/02
CPCG01C11/02
Inventor 王智乔克魏君成冯善辉
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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