Path: FormationFlying/Derivatives
% Compute the second derivative of y with respect to x on an ellipse. Here, x is along the major axis and y is along the minor axis. This function is called by the "FFEccTrueAnomZInc" function to find the true anomaly at which the maximum cross-track separation occurs, assuming a pure inclination difference (no right ascension difference). -------------------------------------------------------------------------- Form: dydx2 = FFEccDYDX2( nu, e, w ); -------------------------------------------------------------------------- ------ Inputs ------ nu (1,N) True anomaly [rad] e (1) Eccentricity ------- Outputs ------- dydx2 (1,N) Second derivative of y w.r.t. x at each true anomaly -------------------------------------------------------------------------- Copyright 2004 Princeton Satellite Systems, Inc. All rights reserved. -------------------------------------------------------------------------- Since version 7. --------------------------------------------------------------------------
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