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Satellite platform flutter detection method based on TDICCD splicing zone image

A technology of a satellite platform and a detection method, applied in the field of aerospace remote sensing imaging, can solve problems such as low flutter detection accuracy

Active Publication Date: 2018-04-27
ANHUI AGRICULTURAL UNIVERSITY
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned defects in the prior art, and propose a satellite platform flutter detection method based on TDICCD splicing area images, in order to effectively solve the problem of low flutter detection accuracy and only able to detect several isolated frequency points , to provide a flutter detection method with high precision and full coverage in a wide frequency band for the satellite platform, thereby improving the satellite attitude detection capability and the accuracy of remote sensing image information extraction

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  • Satellite platform flutter detection method based on TDICCD splicing zone image

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Embodiment Construction

[0071] In the present embodiment, a kind of satellite platform flutter detection method based on TDICCD splicing area image, such as figure 1 As shown, proceed as follows:

[0072] Step 1. Acquisition of overlapping images:

[0073] Step 1.1. The satellite platform is equipped with a high-resolution space camera. There are usually multiple TDICCDs interlaced and spliced ​​on the focal plane of the high-resolution space camera. Two adjacent TDICCDs are randomly selected and recorded as TDICCD 1 and TDICCD 2 , in the direction along TDI, TDICCD 1 and TDICCD 2 The number of interval lines is denoted as L, in the direction perpendicular to TDI, TDICCD 1 and TDICCD 2 There are several columns of overlapping pixels at the junction to form a stitching area, which is denoted as OA 1 and OA 2 , splice region OA 1 and OA 2 The number of overlapping pixel columns in is denoted as C;

[0074] The starting moment of any shooting task of the high-resolution space camera is recorde...

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Abstract

The invention discloses a satellite platform flutter detection method based on a TDICCD splicing zone image. The method comprises the following steps: 1) obtaining overlapped images, and using a timedelay and integration-charge coupled device splicing zone to obtain the overlapped images; 2) calculating a difference of relative imaging positions, performing accurate and dense coupling treatment on two overlapped images to obtain a homonymous matching point, and calculating the difference of the relative imaging positions of a same target in two overlapped images; and 3) estimating the satellite platform flutter according to the difference of the relative imaging positions. The method can effectively solve the problems of low flutter detection accuracy and only detection on several isolated frequency points, provides the flutter detection method with high precision and full coverage in a wide frequency range for a satellite platform, and increases the satellite attitude detection capability and extraction accuracy for the remote sensing image information.

Description

technical field [0001] The invention relates to the field of aerospace remote sensing imaging, in particular to a satellite platform flutter detection method based on a time-delayed and integration charge coupled device TDICCD (Time-delayed and Integration Charge Coupled Device TDICCD) stitching area image. Background technique [0002] Satellite attitude information is very important for the stability control of satellite attitude in the orbit operation stage and the extraction of ground image information in the later stage. As a common phenomenon in the process of satellite operation, flutter has a direct impact on the accuracy of satellite attitude data. With the support of high-performance satellite attitude sensors, remote sensing technology powers such as Europe and the United States can effectively detect flutter within a certain range, thereby obtaining high-precision satellite attitude data. However, the current domestic sensing technology is still immature, and Fore...

Claims

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Application Information

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IPC IPC(8): G01C11/12G06T3/40G06T7/33
CPCG01C11/12G06T3/4038G06T7/33
Inventor 刘海秋高彦伟江朝晖杨宝华乔焰
Owner ANHUI AGRICULTURAL UNIVERSITY
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