Optical imaging method integrating three-dimensional mapping and broad width imaging
A technology of three-dimensional surveying and mapping and optical imaging, which is applied in the field of optical imaging, can solve the problems of insufficient three-dimensional surveying and mapping capabilities, affecting the use efficiency of space-based equipment, and insufficient ability to identify conventional targets on the ground, so as to avoid the decline of three-dimensional surveying and mapping accuracy indicators and achieve good results. The effect of engineering realizability and improvement measures is simple and easy
A technology of three-dimensional surveying and mapping and optical imaging, which is applied in the field of optical imaging, can solve the problems of insufficient three-dimensional surveying and mapping capabilities, affecting the use efficiency of space-based equipment, and insufficient ability to identify conventional targets on the ground, so as to avoid the decline of three-dimensional surveying and mapping accuracy indicators and achieve good results. The effect of engineering realizability and improvement measures is simple and easy
CN103076005AInactive Publication Date: 2013-05-01CHINA ACADEMY OF SPACE TECHNOLOGY
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0039] The main index parameters of the satellite are set as follows: the satellite orbit adopts sun-synchronous homing orbit, the orbital height is 500km, three TDICCD line array cameras form a front-view, front-view and rear-view layout at a intersection angle of 21°, and the imaging width of a single camera is 100km. The formed three-dimensional mapping width is also 100km, and the distance between the ground coverage strips of the front-view and front-view cameras is S=500×tan 21° = 192 km. The baseline length is twice the interval S.
[0040] When performing wide-format stitching imaging, the whole star needs to yaw at a certain initial angle β, and switch the imaging detector. When setting wide stitching, the coverage width W achieved by a single line scan camera is also 100km, and the value of β is β=arcsin(W / S)=arcsin(100 / 192)=31.4°, such as Figure 6 shown. At this time, the strips formed by the front-view camera and the front-view camera on the ground push-broom...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an optical imaging method integrating three-dimensional mapping and broad width imaging. According to the invention, two or three line-scan digital cameras are installed on a satellite within certain interaction angles; each line-scan digital camera is provided with a first imaging detector for three-dimensional mapping and a second imaging detector for broad width imaging, and the conversion between the two imaging detectors are realized by cutting in a reflecting mirror; when the three-dimensional mapping is performed, the satellite flies in a normal attitude, and the imaging detection is realized through the first imaging detector of each line-scan digital camera; and when the broad width monitoring is performed, the satellite flies by yawing a certain angles and converts light paths by cutting in the reflecting mirror, adjacent air strips on the ground are sequentially imaged through the second imaging detector of each line-scan digital camera, and equivalently a wide air strip on the ground is imaged in a segmentation spliced manner, and accordingly the imaging width is remarkably increased. The optical imaging method integrating three-dimensional mapping and broad width imaging realizes multiplexing of the single-satellite function and improves the utilization ratio of on-orbit resources.
Description
technical field [0001] The invention belongs to the technical field of optical remote sensing imaging, and relates to an optical imaging method based on the principle of three-line array or two-line array surveying and mapping, which can simultaneously meet the requirements of three-dimensional surveying and mapping and wide-width imaging by using one satellite. Background technique [0002] The modern combat system's intelligence support requirements for space-based battlefield reconnaissance and surveillance tend to be diversified. According to the different objects of remote sensing detection and intelligence collection purposes, my country has developed and launched a variety of special detection payloads and special satellites, which are improving the space-based remote sensing detection. At the same time, there are also problems such as the system is too complex, the satellite functions and applications are single, and the on-orbit imaging resources are not fully utilize...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
01 May 2013
Publication
CN103076005A
- IPC
- G01C11/00; G03B35/20; G03B37/02
- Inventors
- 王世涛; 宋鹏飞