Abstract
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.
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Gao, H., Shi, H., Zhang, X., Ren, L. (2019). A Similarity Approach for Thermal Distortion Measurement of Large Spacecraft Structure. In: Sun, S., Fu, M., Xu, L. (eds) Signal and Information Processing, Networking and Computers. ICSINC 2018. Lecture Notes in Electrical Engineering, vol 550. Springer, Singapore. https://doi.org/10.1007/978-981-13-7123-3_42
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DOI: https://doi.org/10.1007/978-981-13-7123-3_42
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