Analysis of attitude change impact on aerial push-broom imaging

Xian Guang; Yan Changxiang

The shift generated from aircraft attitude change was one of the main factors affecting the optical imaging quality in aerial push-broom imaging,which could be compensated by stable platform. In this article,based on an particularly airborne imaging spectrometer system,firstly the precise image motion velocity model was established by the homogeneous coordinate transformation method, and the flight attitude accuracy required by the imaging quality was analyzed, thus the parameters of stable platform could be choosed correctly. Then the influence of the residual of compensation of attitude on the imaging quality was analyzed, obtaining the relative shift speed deviation was only 10-1, which providing references for the following spectral calibration and geometric correction. Again, to study the distribution of flight parameters of a given imaging requirement, the error analysis was carried out. Finally, the flight imaging test was carried out. The result showed that the selected PAV30 stable platform could ensure the demand of stability during imaging, which verifying the above analysis was correct and reasonable. The proposed method was simple and easy to implement, having a certain value in engineering.

1. Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2014-12-05

Rev Recd Date: 2015-01-10

Publish Date: 2015-08-25

Key words:

Abstract: The shift generated from aircraft attitude change was one of the main factors affecting the optical imaging quality in aerial push-broom imaging,which could be compensated by stable platform. In this article,based on an particularly airborne imaging spectrometer system,firstly the precise image motion velocity model was established by the homogeneous coordinate transformation method, and the flight attitude accuracy required by the imaging quality was analyzed, thus the parameters of stable platform could be choosed correctly. Then the influence of the residual of compensation of attitude on the imaging quality was analyzed, obtaining the relative shift speed deviation was only 10-1, which providing references for the following spectral calibration and geometric correction. Again, to study the distribution of flight parameters of a given imaging requirement, the error analysis was carried out. Finally, the flight imaging test was carried out. The result showed that the selected PAV30 stable platform could ensure the demand of stability during imaging, which verifying the above analysis was correct and reasonable. The proposed method was simple and easy to implement, having a certain value in engineering.

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Analysis of attitude change impact on aerial push-broom imaging

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