Method for inverting low-frequency vibration parameters of spacecraft based on multiple continuous remote sensing images

The invention discloses a method for inverting low-frequency vibration parameters of a spacecraft based on multiple continuous remote sensing images, and the method comprises the following steps of: firstly, continuously shooting multiple remote sensing images on a ground scene at a high speed by us...

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Hauptverfasser: YAN JUNHUA, MA YUE, QI JINGCHUN, ZHANG SHAOSHUAI, GU ENCHEN, DING PENGYUAN, ZHANG YIN, FAN JUNJIE
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a method for inverting low-frequency vibration parameters of a spacecraft based on multiple continuous remote sensing images, and the method comprises the following steps of: firstly, continuously shooting multiple remote sensing images on a ground scene at a high speed by using a spacecraft optical camera at a frequency far higher than the vibration frequency of the spacecraft, and intercepting image blocks with the same scene by using an SIFT (Scale Invariant Feature Transform) algorithm; calculating an entropy value based on a gray-level co-occurrence matrix for a plurality of continuous remote sensing image blocks; then measuring corresponding MTF data of the image blocks by using a blade edge method, and constructing support vector regression (SVR) to measure the vibration quantity corresponding to each remote sensing image block; determining whether the vibration quantity is positive or negative according to the moment when the maximum entropy value of a plurality of continuous r