A noise simulator for eLISA: Migrating LISA Pathfinder knowledge to the eLISA mission

[摘要] We present a new technical simulator for the eLISA mission, based on state space modeling techniques and developed in MATLAB. This simulator computes the coordinate and velocity over time of each body involved in the constellation, i.e. the spacecraft and its test masses, taking into account the different disturbances and actuations. This allows studying the contribution of instrumental noises and system imperfections on the residual acceleration applied on the TMs, the latter reflecting the performance of the achieved free-fall along the sensitive axis. A preliminary version of the results is presented.

[发布机构] European Space Astronomy Centre, European Space Agency, Villanueva-de-la-Cañada, Madrid; 28692, Spain^1;Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, Universität Hannover, Hannover; 30167, Germany^2;APC UMR7164, Université Paris Diderot, Paris, France^3;Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento; 38123, Italy^4;Airbus Defence and Space, Claude-Dornier-Strasse, Immenstaad; 88090, Germany^5;European Space Technology Centre, European Space Agency, Keplerlaan 1, Noordwijk; 2200 AG, Netherlands^6;Dipartimento di Fisica, Università di Trento, Trento Institute for Fundamental Physics and Application/INFN, Povo, Trento; 38123, Italy^7;Department of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom^8;Airbus Defence and Space, Gunnels Wood Road, Hertfordshire, Stevenage; SG1 2AS, United Kingdom; (10) Institut für Geophysik, ETH Zürich, Sonneggstrasse 5, Zurich; CH-8092, Switzerland; (11) Institut de Ciències de l'Espai (CSIC-IEEC), Campus UAB, Facultat de Ciencies, Bellaterra; 08193, Spain; (12) Istituto di Fisica, Università Degli Studi di Urbino, INFN Urbino (PU), Italy; (13) European Space Operations Centre, European Space Agency, Darmstadt; 64293, Germany; (14) Blackett Laboratory, Imperial College London, United Kingdom; (15) Physik Institut, Universität Zürich, Winterthurerstrasse 190, Zürich; CH-8057, Switzerland; (16) Institute for Gravitational Research, School of Physics and Astronomy, University of Glasgow, Glasgow; G12 8QQ, United Kingdom; (17) Department d'Enginyeria Electrònica, Universitat Politècnica de Catalunya, Barcelona; 08034, Spain; (18) Institut d'Estudis Espacials de Catalunya (IEEC), C/ Gran Capità 2-4, Barcelona; 08034, Spain; (19) NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt; MD; 20771, United States; (20) CGS S.p.A, Compagnia Generale per Lo Spazio, Via Gallarate, 150, Milan; 20151, Italy^9

[关键词] Free fall;Instrumental noise;LISA Pathfinder;On state;Residual acceleration;System imperfections