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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Autonomous tip/tilt alignment and phasing of a distributed aperture imaging testbed.

Mel Ni1, Larry Benson, John Camp

  • 1Lockheed Martin Space Systems Company, Advanced Technology Center, 3251 Hanover St, Palo Alto, CA 94304, USA. melvin.s.ni@lmco.com

Optics Express
|July 1, 2010
PubMed
Summary

Star-9 demonstrated algorithms for aligning nine telescopes in a distributed aperture imaging system. These methods correct tip/tilt and phasing errors for clear image combination from point and extended sources.

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Area of Science:

  • Optical Engineering
  • Astronomy
  • Image Processing

Background:

  • Distributed aperture imaging systems combine light from multiple telescopes to achieve higher resolution.
  • Active control is necessary to correct for optical aberrations and alignment errors in such systems.

Purpose of the Study:

  • To present algorithms for automatic alignment of telescopes in a distributed aperture system.
  • To validate these algorithms using the Star-9 experimental demonstration.

Main Methods:

  • Development of algorithms for automatic tip/tilt and phasing error correction.
  • Testing algorithms with both point sources and extended scenes.
  • Utilizing the Star-9 experimental setup with nine actively controlled telescopes.

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Last Updated: Jun 11, 2026

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Main Results:

  • Successful automatic correction of relative tip/tilt and phasing errors for all telescopes.
  • Demonstrated functionality with diverse scene types.
  • Experimental validation of the developed software algorithms.

Conclusions:

  • The developed algorithms effectively enable the alignment of telescopes in a distributed aperture system.
  • The Star-9 experiment successfully demonstrated the feasibility of automated alignment for advanced optical imaging.