Joint adjustment method and system for weak intersection optical satellite imagery constrained by coplanar rays
An optical satellite, joint adjustment technology, applied in photogrammetry/video surveying, instruments, surveying and navigation, etc., can solve the problem of difficult to apply single-line array optical satellite images, regional network adjustment failure, abnormal connection point elevation coordinates And other issues
Active Publication Date: 2021-04-27
WUHAN UNIV
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Problems solved by technology
The weak intersection problem will make the traditional block adjustment method for good intersection conditions difficult to apply to single-line array optical satellite images. Poor failure
Therefore, affected by the problem of weak rendezvous, it is necessary to arrange control points on all images or to need the assistance of DEM data to achieve precise positioning of weak rendezvous optical satellite images. Bottleneck Problems in the Wide Application of Surveying and Mapping
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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0054] In an embodiment of the present invention, a joint adjustment method for weakly intersecting optical satellite images constrained by coplanar rays is provided, comprising the following steps: step 1, establishing a model constrained by coplanar rays of optical satellite images; and step 2, establishing strict positioning of optical satellite images Model; step 3, establish the optical satellite image attitude error compensation model; step 4, solve the optical satellite image attitude error compensation parameters.
[0055] Further, in the step 1, a coplanar constraint model of optical satel...
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The invention discloses a weak intersection optical satellite image joint adjustment method and system with light coplanar constraints. The satellite image attitude error compensation model solves the optical satellite image attitude error compensation parameters. Starting from the imaging mechanism of the optical satellite sensor, the present invention establishes a light coplanar constraint model of the optical satellite image, and on this basis, combines the strict positioning model of the optical satellite image and the attitude error compensation model, and proposes a weak rendezvous of the light coplanar constraint Optical satellite image joint adjustment method and system. The present invention can realize precise positioning of weak rendezvous optical satellite images without DEM assistance under the condition of a small number of control points.
Description
technical field [0001] The invention belongs to the field of photogrammetry and remote sensing, and in particular relates to a joint adjustment method and system for weak intersection optical satellite images constrained by coplanar light rays. Background technique [0002] High-resolution satellite remote sensing earth observation technology is an important means for human beings to obtain geospatial information. Geospatial information products made from high-resolution satellite images have been widely used in topographic surveying and mapping, land resource investigation, geographical monitoring, disaster relief, Town planning and many other fields are playing an extremely important role in my country's social economy and national defense construction. At present, my country has successively launched high-resolution optical remote sensing satellites such as Tianhui-1, Ziyuan-1 02C, Ziyuan-3, Gaofen-1, Gaofen-2, Gaofen-9, Jilin-1 and Gaojing-1. Satellites, and more high-res...
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IPC IPC(8): G01C11/00
CPCG01C11/00
Inventor 曹金山袁修孝龚健雅
Owner WUHAN UNIV