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A High Resolution Satellite Attitude Flutter Detection Method Based on Dense Control Points

A satellite attitude, high-resolution technology, applied in photo interpretation and other directions, can solve the problems of inability to invert high-frequency changes, and reduce the accuracy of satellite image geometric processing, so as to improve accuracy, reduce high-frequency components, and improve accuracy. Effect

Active Publication Date: 2017-05-24
TONGJI UNIV
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Problems solved by technology

When the measurement frequency of the satellite's attitude measurement equipment is lower than the frequency of attitude changes, its high-frequency changes cannot be retrieved from the attitude observation data, resulting in a decrease in the geometric processing accuracy of satellite images

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  • A High Resolution Satellite Attitude Flutter Detection Method Based on Dense Control Points
  • A High Resolution Satellite Attitude Flutter Detection Method Based on Dense Control Points
  • A High Resolution Satellite Attitude Flutter Detection Method Based on Dense Control Points

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0051] Such as figure 1 As shown, the present embodiment provides a high-resolution satellite attitude flutter detection method based on dense control points, which is characterized in that it includes the following steps:

[0052] Step S1: Reference image preprocessing.

[0053] The reference image used in this embodiment is a DOM image. Since the DOM reference image has high resolution and rich image detail information, before extracting feature points, the DOM image must first be preprocessed, that is, low-pass filtered, to reduce the level of detail of the image as much as possib...

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Abstract

The invention relates to a high resolution satellite attitude fluttering detection method based on intensive control points, comprising the following steps of: 1, pre-processing a reference image; 2, intensively matching the pre-processed reference image with a satellite image obtained in real time; 3, resolving the satellite attitude fluttering. Compared with the prior art, the high resolution satellite attitude fluttering detection method can accurately detect the attitude fluttering phenomenon of the satellite platform by using the support of external reference data (DOM (Digital Orthoimage) and DEM (Digital Elevation Model)), and thereby restoring the actual state of the satellite on-orbit motion, and has the advantages of being high in accuracy and detection precision.

Description

technical field [0001] The invention relates to a satellite attitude flutter detection method, in particular to a high-resolution satellite attitude flutter detection method based on dense control points. Background technique [0002] Since the 1990s, the requirements for accuracy and stability of earth observation satellites have become higher and higher, and domestic and foreign countries have begun to pay attention to and study the fluctuations of satellite platforms caused by various reasons. Compared with sensors of other imaging methods, linear array CCD sensors are more susceptible to satellite motion and rotation during push-broom imaging. The mechanical movement of the satellite itself, such as solar panels, momentum wheels, and antennas, the thermal distortion of the star, and operations such as attitude control, will all cause changes in attitude. When the measurement frequency of the satellite's attitude measurement equipment is lower than the frequency of attit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/14
CPCG01C11/14
Inventor 童小华王凤香刘世杰李凌云叶真谢欢陈鹏张松林
Owner TONGJI UNIV
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