Camera Pointing Correction Algorithm for Chang’e-5T Probe Based on Earth-Moon Group Images

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  • 1. Aerospace Flight Dynamics Laboratory,Beijing Aerospace Control Center,Beijing 100094,China;
    2. Dept. Spacecraft Management,Beijing Aerospace Control Center,Beijing 100094,China

Received date: 01 Mar 2016

Revised date: 10 Nov 2016

Published date: 06 Jun 2022

Abstract

In this paper, a camera pointing correction algorithm is proposed based on Earth-Moon group images of Chang’e-5T. Firstly, centroid coordinates of the two celestial bodies are extracted from the Earth-Moon group image using a morphological analysis method. Then an optimization function is constructed to estimate the installation error of the camera. The typical advantage of the algorithm is that the pointing error of the onboard camera can be corrected easily by one interstellar image. Accuracies of corrected results based on simulated data and the actual data of Chang’e-5T all reach the order of 0.01 degree, which verify the efficiency of the algorithm. All the work is meaningful to actual engineering application.

Cite this article

BU Yanlong, ZHANG Qiang, WANG Hang, LIANG Libo, QIU Rujin . Camera Pointing Correction Algorithm for Chang’e-5T Probe Based on Earth-Moon Group Images[J]. Journal of Deep Space Exploration, 2017 , 4(1) : 66 -71 . DOI: 10.15982/j.issn.2095-7777.2017.01.010

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