Modeling and characterization of OASIS inflatable primary antenna by dual modality metrology

Siddhartha Sirsi, Henry Quach, Hyukmo Kang, Pete Morken, Arthur Palisoc, Yuzuru Takashima, Christian D’Aubigny, Aman Chandra, Marcos Esparza, Karlene Karrfalt, Kevin Z. Derby, Heejoo Choi, Daewook Kim, Christopher Walker

Research output: Contribution to journalArticlepeer-review


OASIS (Orbiting Astronomical Satellite for Investigating Stellar Systems) is a space-based observatory with a 14 m diameter inflatable primary antenna that will perform high spectral resolution observations at terahertz frequencies. The large inflatable aperture, non-traditional surface configuration, and the double layered membrane structure afford unique challenges to the modeling and testing of the primary antenna. A 1-meter prototype of the primary antenna (A1) was built to validate our technical approach. A laser radar coordinate measuring system was adopted to measure the shape of A1. In addition, deflectometry was performed to monitor the stability of A1 during the radar measurement. Test cases pertaining to specific operational conditions expected for the 14 m OASIS primary were explored. The measured data were then compared to the Fichter model and Finite-element Analyzer for Inflatable Membranes (FAIM).

Original languageEnglish (US)
Pages (from-to)33479-33489
Number of pages11
JournalOptics Express
Issue number19
StatePublished - Sep 12 2022

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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