16 September 2004 SIMsim: an end-to-end simulator for the SIM Mission
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Abstract
In this paper we discuss the use of an innovative SIM simulator, called SIMsim, to perform end-to-end simulations of the SIM mission. The inputs to the simulator are a physically-based parameterization of the major SIM error sources and the output is the mission astrometric accuracy for various observing scenarios such as narrow-angle (NA) and wide-angle (WA) observations. The primary role of SIMsim is to validate the SIM astrometric error budget (AEB), but it is also being used to study a variety of mission performance issues as well as being a test-bed for prototype data reduction algorithms. SIMsim is giving us confidence that the SIM AEB is a valid estimate of mission performance. It also is illustrating where analytical formulas for estimating certain effects breakdown and a numerical approach has to be adopted.
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David W. Murphy, David W. Murphy, David L. Meier, David L. Meier, } "SIMsim: an end-to-end simulator for the SIM Mission", Proc. SPIE 5497, Modeling and Systems Engineering for Astronomy, (16 September 2004); doi: 10.1117/12.551825; https://doi.org/10.1117/12.551825
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