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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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 de

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

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Example Embodiment

[0071] In this embodiment, a satellite platform flutter detection method based on TDICCD splicing area images, such as figure 1 As shown, proceed as follows:

[0072] Step 1. Obtaining overlapping images:

[0073] Step 1.1. A high-resolution space camera is mounted on the satellite platform. There are usually multiple interlaced and stitched TDICCDs on the focal plane of the high-resolution space camera. Two adjacent TDICCDs are arbitrarily selected and recorded as TDICCD 1 And TDICCD 2 , In the direction along the TDI, TDICCD 1 And TDICCD 2 The number of spacing lines is L, in the direction perpendicular to TDI, TDICCD 1 And TDICCD 2 There are several rows of overlapping pixels at the junction of, to form a splicing area, denoted as OA 1 And OA 2 , Splicing area OA 1 And OA 2 The number of overlapping pixel columns within is recorded as C;

[0074] The starting time of any shooting task of the high-resolution space camera is recorded as time 0, and the shooting duration is recorded ...

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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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