System Validation and Verification Testing for the Laser Interferometry Space Antenna (LISA)

Details System Validation and Verification Testing for the Laser Interferometry Space Antenna (LISA) System Validation and Verification Testing for the Laser Interferometry Space Antenna (LISA)

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.7404l&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #74.04; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

The Laser Interferometry Space Antenna (LISA) mission is a set of 3 spacecraft that fly in a heliocentric orbit in an equilateral triangle formation to detect gravitational waves. Each side of the triangle is 5 million km long, and the formation detects passing waves by closely monitoring the distance between spacecraft.
The ideal for system-level testing of instruments and spacecraft is to “test as you fly”. Given that the inter-spacecraft distance is approximately 13 times the distance between the earth and the moon, Ground testing for the LISA instrument will not be able to meet this ideal in a number of areas, so a combination of testing, simulation, and analysis will be needed instead. This paper will outline some of the areas where direct testing on the ground will not be possible, and discuss some of ideas, concepts and methods to meet that challenge.
The focus of the discussion will be on the optical and system-level aspects of the testing, as many of the issues associated with the proof masses and drag-free spacecraft are covered by the LISA Pathfinder mission.

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