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Moon control network establishment method

A method for establishing a method and a control network technology, applied in the field of image processing, can solve the problems of low plane position and elevation accuracy of control points, inconsistent accuracy, uneven distribution of control points, etc. Effect

Active Publication Date: 2012-10-17
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The existing lunar control networks mainly include the Apollo lunar surface control network, ULCN1994, CLCN1997, and ULCN2005, etc., but these control networks have many defects, mainly in the uneven distribution of control points, mainly concentrated on the front of the moon; The plane position and elevation accuracy of the control points are low and inconsistent; the control network does not provide supporting reference images, and cannot be accurately positioned on the satellite image data, which limits the application of these control networks

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] figure 1 The flow chart of the method for establishing the lunar control network of the present invention is shown.

[0022] refer to figure 1 , when utilizing the method of the present invention to establish the lunar control network, at first will carry out data organization and preparation.

[0023] The CCD stereo camera is one of the main payloads mounted on the lunar probe, such as the CE-1 satellite. It adopts linear array push-broom imaging technology to obtain three-line array images from three perspectives, including front view, front view and rear view, along the flight direction of the satellite. Bands. figure 2 The schematic diagram of image data acquisition by stereo camera is given. The CCD detec...

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Abstract

The invention discloses a moon control network establishment method, comprising the steps of: step 1, obtaining image data of the lunar surface and corresponding ephemeris data and attitude data; step 2, extracting corresponding image points from image data from different viewing angles of a same orbit and image data of adjacent orbits by using an automatic image matching technology; step 3, by employing the data and the corresponding image points, performing adjustment processing for a survey area to form the ground stereo model of the whole survey area; step 4, performing adjustment processing for the whole moon after the adjustment processing is performed for survey areas; step 5, laying control points on the whole moon according to an established regular grid, then, calculating the selenographic coordinates of the control points according to parameters of the adjustment of the survey areas and the adjustment of the whole moon. The establishment method for the moon control network focuses on specific requirements for 1: 2,500,000 or larger scale lunar mapping, solving the problems of scale change and absolute orientation of the control network and improving the absolute accuracy of the control network.

Description

technical field [0001] The invention mainly relates to the field of image processing, in particular to a method for constructing a lunar surface control network. Background technique [0002] The lunar land control network includes a horizontal control network and an elevation control network. On Earth, the geodetic control network is mainly constructed through ground geodesy. The horizontal control network is established by triangulation and traverse survey, combined with astronomical survey, gravity survey and elevation survey, and calculated on the reference ellipsoid to calculate the geodetic coordinates of various locations as the basic control of the plane position. The elevation control network is established with leveling survey, combined with astronomical survey and gravity survey, the elevation of each benchmark point is calculated as the basic control of elevation. [0003] The lunar surface control network is mainly established through ground-based observation ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/02
Inventor 任鑫刘建军李春来牟伶俐
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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