Path: SpacecraftEstimation/OrbitEstimation
% Range and range rate to an Earth target. Includes Earth rotational rate. -------------------------------------------------------------------------- Form: [y, rT] = MeasEarthTarget( x, d ) -------------------------------------------------------------------------- ------ Inputs ------ x (3,1) Position of spacecraft (km) d (.) Data structure .jD0 (1,1) Julian date .omegaSkew (3,3) Skew symmetric matrix for earth rate .t (1,1) Time (s) .rEF (3,1) Earth fixed target location .noise1Sigma (2,1) [range;range rate] 1 sigma (km,km/s) ------- Outputs ------- y (2,1) [range;range rate] rT (3,1) Target on Earth in ECI frame (km) --------------------------------------------------------------------------
Common: Time/Date2JD Common: Time/JD2T Math: Linear/Mag Math: Linear/Skew Math: Linear/Unit OrbitMiniToolbox: Support/EarthRot
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