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Method for generating rational function imaging model of each grade satellite image products

A technology of imaging models and rational functions, applied in complex mathematical operations, re-radiation of electromagnetic waves, instruments, etc., can solve problems that cannot be corrected by geometric models

Inactive Publication Date: 2009-12-09
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the bottleneck problem in the application of satellite remote sensing images that the geometric model cannot be used for further fine correction of the geometric products of satellite images at all levels

Method used

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  • Method for generating rational function imaging model of each grade satellite image products
  • Method for generating rational function imaging model of each grade satellite image products
  • Method for generating rational function imaging model of each grade satellite image products

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Embodiment 3

[0135] In Example 3, if the inverse transformation formula of the rigorous mathematical model of the second-level image and the forward transformation formula of the rigorous mathematical model of the second-level image are used, the direct calculation formula of the rigorous geometric model of the second-level image can be directly obtained by using the procedures established in steps 1.1, 1.2, 1.3, and 1.4 (D lat ,D lon ) = T 2 (x 2 ,y 2 , h) as the forward transformation formula of the rigorous mathematical model of the secondary image. The inverse transformation formula of the rigorous mathematical model of the secondary image is obtained through the following process:

[0136] Step a, from the geodetic latitude and longitude coordinates of a point (D lat2 ,D lon2 , h) Calculate the pixel coordinates (x 1 ,y 1 , h);

[0137] Step b, adjust the pixel coordinates (x 1 ,y 1 , the elevation h in h) is h base , the pixel coordinates (x 1 ,y 1 , h base ) into geod...

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Abstract

The invention relates to a method for generating a rational function imaging model of each grade satellite image products: utilizing the forward conversion of a two-stage geometric model to establish a control point grid and to establish an RPC model of a two-stage geometric product; utilizing the forward conversion of a one-stage-generated three-stage product to establish a control point grid and to establish an RPC model of a three-stage geometric product; and utilizing the forward conversion of a two-stage-generated three-stage product to establish a control point grid and to establish an RPC model of the three-stage geometric product. The invention endues the two-stage and the three-stage products with much more advantages during further application.

Description

technical field [0001] The invention belongs to the technical field of photography and imaging, and in particular relates to a method for generating a rational function imaging model of satellite imagery products at various levels. Background technique [0002] In order to meet the different needs of different users for satellite remote sensing images, some experts in this field proposed to classify the geometric products of satellite images. However, at present, the rigorous imaging geometric models of satellites are all aimed at the first-level satellite products, and there is no research on the rigorous imaging geometric models of other satellite-level geometric products, so other satellite-level products have not been effectively applied. . However, with the continuous development of various remote sensing satellites and the continuous improvement of the application level of geometric products of remote sensing satellites, it is necessary to further fine-tune the produc...

Claims

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Application Information

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IPC IPC(8): G01S7/48G01S17/89G06F17/10
Inventor 张过江万寿刘斌
Owner WUHAN UNIV