what happens if a state vector has a negative covariance what is a negative covariance what does covariance indicate in an kalman filter why is my ekf not showing overlapping values what happens if a measurement has a covariant what happens when your covariance is negative what kind of covariance is $y what happens when covariance is negative in kalman filter how to calculate state of the covariance what is the covariance of the kalman filter what if the covariance matrix is negative does the coefficients of a covariance overlap between the measurements what does the matrix of state and covariance represent what happens if a covariance in the kalman filters is negative? what does the covariance in kalman filter do which kf measure has a negative variance? how to find zero covariance in kalman filter which of the following is an example of a state vector what is the difference between a covariance and a state vector what is the coefficient of covariance in kalman filter