?? k_ud.m
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function [X,P] = k_ud(X,P,H,Y,R)
% K_UD Kalman update, one measurement per call
% Observation covariance R
% Written by Kai Borre and C.C. Goad
% November 24, 1996
omc = Y-H'*X;
HP = H'*P;
innovation_variance = HP*H+R;
K = HP'/innovation_variance;
X = X+K*omc;
P = P-K*HP;
%%%%%%%% end k_ud.m %%%%%%%%%%%%%%%%%%
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