The Laser Interferometer Space Antenna (LISA) mission is a planned NASA-ESA gravitational wave detector consisting of three spacecraft in heliocentric orbit. Lasers are used to measure distance fluctuations between proof masses aboard each spacecraft to the picometer level over a 5 million kilometer separation. Each spacecraft and its two laser transmit/receive telescopes must be held stable in pointing to less than 8 nanoradians per root Hertz in the frequency band 0.1-100 mHz. The pointing error is sensed in the received beam and the spacecraft attitude is controlled with a set of micro-Newton thrusters. Requirements, sensors, actuators, control design, and simulations are described.


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    Title :

    Precision Pointing for the Laser Interferometry Space Antenna Mission


    Contributors:
    T. T. Hyde (author) / P. G. Maghami (author)

    Publication date :

    2002


    Size :

    16 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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