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3-D baseline error estimation method for distributed small satellites

XU Qing1;LIAO Gui-sheng1;LIU Ying1;LIANG Jing2
  

  1. (1. Key Lab. of Radar Signal Processing, Xidian Univ., Xi’an 710071, China;
    2. Dept. of Communication Equipment Management, Xi’an Communication Inst., Xi’an 710106, China)
  • Received:2007-08-28 Revised:1900-01-01 Online:2008-08-20 Published:2008-08-20
  • Contact: XU Qing E-mail:xuqing@mail.xidian.edu.cn

Abstract: In 3-D distributed small satellites, the along-track baseline couples with the vertical-track ones, which makes it difficult to estimate them, respectively. A new 3-D baseline error estimation method for distributed small satellites is proposed in this paper. This method separates the two kinds of baselines through image registration in the field of the image and estimates the two kinds of baseline errors by image registration and subspace decomposition, respectively. The method is easy to operate with a small amount of computation. The mm-level precision can be achieved.

Key words: distributed small satellites, baseline error estimation, image registration

CLC Number: 

  • TN957