A Similarity Approach for Thermal Distortion Measurement of Large Spacecraft Structure

  • Hongtao GaoEmail author
  • Haitao Shi
  • Xiaofeng Zhang
  • Lu Ren
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 550)


Thermal distortion is one of the key factors to satellite image geolocation accuracy. To evaluate the thermal stability of large spacecraft structure, a similarity approach of thermal distortion measurement on a downscaling model is presented. Similarity relations of thermal distortion between downscaling model and the full-size structure were derived, and a thermal distortion test system based on 3D-DIC (digital image correlation) was built and used to distortion measurement of several structures with dimensions from sub-meters to meters. Results showed that measurement on the downscaling model could achieve nearly same precision as that on full-size structure, and could reduce test complexity, cost and time.


Spacecraft structure Thermal distortion Similitude DIC 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Hongtao Gao
    • 1
    Email author
  • Haitao Shi
    • 1
  • Xiaofeng Zhang
    • 1
  • Lu Ren
    • 1
  1. 1.ISSE of China Academy of Space TechnologyBeijingChina

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