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Image-Based Method for Measuring Installation Parameters of Planetary Close-range Photogrammetry Cameras

A technology of close-range photography and measurement methods, applied in the field of data processing, can solve the problems of large random errors of reference mirrors and affect the efficiency and accuracy of parameter measurement, and achieve the effects of rigorous theory, improved measurement efficiency, and strong operability

Active Publication Date: 2020-12-18
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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Problems solved by technology

However, due to the abstract concept of the coordinate system, the random error in the self-collimation process of the reference mirror is relatively large, which greatly affects the efficiency and accuracy of parameter measurement

Method used

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  • Image-Based Method for Measuring Installation Parameters of Planetary Close-range Photogrammetry Cameras
  • Image-Based Method for Measuring Installation Parameters of Planetary Close-range Photogrammetry Cameras
  • Image-Based Method for Measuring Installation Parameters of Planetary Close-range Photogrammetry Cameras

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Embodiment

[0036] The present invention is suitable for measuring the installation parameters of the close-range photogrammetry camera of the lunar probe. For the convenience of description, the present invention takes the panoramic camera of the Chang'e 5 mission as an example to specifically describe the method for measuring the installation parameters.

[0037] First, the composition and working principle of the Chang'e-5 mission and the panoramic camera are introduced.

[0038] The Chang'e-5 mission (CE-5), the third phase of my country's lunar exploration project, will implement lunar sampling and return to Earth. Its scientific objectives include on-site detection in the sampling area and analysis and research of lunar samples. Among them, the in-situ detection of the sampling area includes the survey of lunar surface morphology and geological structure in the sampling area, which provides a basis for the selection of lunar soil sampling objects, and establishes the connection betwe...

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Abstract

The invention provides a method for measuring an installation parameter of a planetary close-range photogrammetric camera based on an image. The method includes the following steps: step 1, establishing a coordinate system involved in measuring the installation parameter of the planetary close-range photogrammetric camera; step 2, determining the type of the installation parameter; step 3, building a measurement environment for the installation parameter; step 4, obtaining observation data required to solve the installation parameter; and step 5, solving the installation parameter of the planetary close-range photogrammetric camera. According to the scheme of the invention, the installation parameter of the planetary close-range photogrammetric camera can be measured with high accuracy, strong operability and rigorous theories can be realized, and the measurement efficiency can also be significantly improved.

Description

technical field [0001] The invention relates to a data processing method, in particular to an image-based method for measuring installation parameters of a planetary close-range photogrammetry camera. Background technique [0002] Close-range photogrammetry is a branch of photogrammetry, which is a technique of determining its shape, geometric position and size by using the images obtained by photographing a short-range target within 300m. In planetary exploration missions such as lunar exploration and Mars exploration, close-range photogrammetry cameras are important scientific payloads, including my country's Chang'e-3 lunar exploration mission, the American Mars Exploration Rover (MER), and the Mars Science Laboratory (MSL), etc. Both the lunar and Mars exploration missions carry close-range photogrammetry cameras such as panoramic cameras and navigation cameras. my country's upcoming Chang'e-5 mission and the first Mars exploration mission will also carry close-range phot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/02G01C25/00
CPCG01C11/02G01C25/00
Inventor 任鑫严韦刘建军李春来陈王丽张晓霞王文睿
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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