Stereo image positioning technology without ground control points assisted by optical axis position measurement data

In satellite photogrammetry, after the on-orbit calibration of the camera parameters, there are still low-frequency errors that vary with time and affect the location accuracy of satellite images in the absence of ground control points. Optical axis position measurement devices based on the optical...

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Bibliographic Details
Published inCe hui xue bao Vol. 53; no. 1; p. 1
Main Authors WANG, Jianrong, YANG Yuanxi, LU, Xueliang, MIAO Yuzhe
Format Journal Article
LanguageChinese
English
Published Beijing Surveying and Mapping Press 01.01.2024
Subjects
Accuracy
Aerospace environments
Algorithms
Calibration
Cameras
Errors
Ground based control
Image processing
Measuring instruments
Parameters
Photogrammetry
Position measurement
Principles
Real time
Satellite imagery
Satellites
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Summary:In satellite photogrammetry, after the on-orbit calibration of the camera parameters, there are still low-frequency errors that vary with time and affect the location accuracy of satellite images in the absence of ground control points. Optical axis position measurement devices based on the optical self-collimation principle can be used to monitor the on-orbit camera parameter changes in real time. For global real-time or quasi-real-time image processing, this measurement data can be used to reduce the impact of low-frequency errors on the location accuracy of stereo images. Based on the working principle of the optical axis position measurement device, this paper establishes a model and algorithm for assisting stereo image positioning with optical axis position measurement data, and conducts experimental validation using GF-14 satellite data. The experimental results show that the use of optical axis position measurement data to assist stereo image positioning can achieve high location accuracy of satellite
ISSN:1001-1595
1001-1595
DOI:10.11947/j.AGCS.2024.20230173