Obtaining method of optical remote sensing satellite image in-scene relative distortion indexes

A satellite image and optical remote sensing technology, applied in photogrammetry/video metrology, instruments, surveying and mapping, and navigation, etc., can solve problems affecting image use, image quality and use efficiency in satellite scenes, and optimize the development process , Improving the image quality and the effect of using efficiency

Active Publication Date: 2013-12-11
AEROSPACE DONGFANGHONG SATELLITE
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Problems solved by technology

The relative distortion index in the image scene without control points recently proposed by the user is different from the above indicators. The main influencing factor of this index is random error. To remove this error, the satellite can only image in areas with high-precision control points or a large nu

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  • Obtaining method of optical remote sensing satellite image in-scene relative distortion indexes
  • Obtaining method of optical remote sensing satellite image in-scene relative distortion indexes
  • Obtaining method of optical remote sensing satellite image in-scene relative distortion indexes

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[0025] The present invention is an optical remote sensing satellite image relative distortion index analysis method in the scene, which points out each element that affects the relative distortion in the image scene, and provides a method for calculating and predicting the relative distortion in the image scene through each independent influencing factor.

[0026] Under the condition of no control points, the relative distortion in the image scene is mainly affected by the random error of the satellite measurement system, the random error of the satellite imaging time scale, the satellite platform flutter and the satellite in-orbit calibration accuracy. When determining the sources of errors, Analyze the above errors.

[0027] Satellite measurement systems are mainly divided into: attitude measurement system and orbit measurement system. For high-resolution optical remote sensing satellites, most of their attitude measurement systems are star sensors, so the random error source of ...

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Abstract

The invention discloses an obtaining method of optical remote sensing satellite image in-scene relative distortion indexes. Firstly error sources of remote sensing image in-scene relative distortion indexes are defined; image in-scene relative distortion is mainly affected by the random error of a satellite measurement system, a satellite imagery timer random error, satellite platform flutter and the satellite in-rail calibration accuracy; secondly, the optical remote sensing image relative in-scene distortion caused by each error source is obtained by calculating the image in-scene relative distortion value caused by each independent error source in the directions of along and crossing a track; finally the comprehensive influence on the optical remote sensing image relative in-scene distortion by each error source is obtained by adopting the optical remote sensing image relative in-scene distortion value caused by each error source, and the image in-scene relative distortion is estimated. The method indicates all factors influencing the image in-scene relative distortion, and gives out a quantitative calculation method of each independent influence factor and a method for estimating the image in-scene relative distortion.

Description

technical field [0001] The invention relates to a method for obtaining relative distortion indexes in an image scene of an optical remote sensing satellite, in particular to a method for obtaining relative distortion indexes in an image scene when there are no control points. Background technique [0002] With the development of optical remote sensing technology, users have higher and higher requirements for the image quality of remote sensors, and the proposed indicators are becoming more and more detailed. The relative distortion index in the scene without control points is the index proposed by users to control image quality recently. . The relative distortion in the image scene is mainly caused by the random error of the satellite measurement system, the flutter of the satellite platform and other factors. Since its influencing factors are mainly random errors, the ground application stage cannot be removed by regular geometric calibration. If there are no high-precisi...

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Application Information

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IPC IPC(8): G01C11/00
Inventor 尹欢王瑞朱军赵鸿志韩杏子王付刚
Owner AEROSPACE DONGFANGHONG SATELLITE
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