Path: SpacecraftEstimation/OrbitEstimation
% Demonstrates orbit disturbance estimation using linearized equations. This uses the linearized orbit equations in-plane. A radial disturbance is modeled and estimated. The equations are normalized so that the derivative is respect to wo*t instead of t. This improves the numerical properties of the state transition matrix which otherwise would cause DQCE to fail. DQCE has an inverse in it which is not particularly robust numerically. Generally, this kind of scaling is always a good idea. ------------------------------------------------------------------------- See also C2DZOH, DQCE, Plot2D, TimeLabl, LinOrbNormalized ------------------------------------------------------------------------- % -------------------------------------------------------------------------- Copyright (c) 2002 Princeton Satellite Systems, Inc. All rights reserved. --------------------------------------------------------------------------
SCPro: DynamicalModels/LinOrbNormalized Common: CommonData/SwooshWatermark Common: Control/C2DZOH Common: Control/DQCE Common: Control/DRiccati Common: General/CellToMat Common: General/MatToCell Common: General/Watermark Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle Common: Graphics/TimeLabl Math: MathUtils/Odd
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