Description
Computes the values of the sigma points for all properties in the provided nominal state, using the arguments for the covariance, Alpha, Beta, and Kappa values.
Timing Precision Mode
This page describes functionality in millisecond timing precision mode. Millisecond timing precision mode is deprecated and will be removed in a future release. We recommend that you migrate your Mission Plans to nanosecond timing precision mode.
Click here to see the documentation for this object in nanosecond timing precision mode.
Method Signature
Arguments
alpha
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Description:
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The value for alpha to be used in the Scaled Unscented Transformation. Choosing Alpha << 1 reduces higher order effects when selecting sigma points.
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Valid Range:
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alpha > 0
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beta
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Description:
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The value for beta to be used in the Scaled Unscented Transformation. Choosing Beta = 2 reflects a Gaussian distribution.
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Valid Range:
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beta > 0
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kappa
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Description:
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The value for kappa to be used in the Scaled Unscented Transformation. Choosing Kappa >= 0 ensures the resulting covariance matrix will be positive semi-definite.
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Valid Range:
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kappa ≥ 0
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nominalState
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Description:
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The nominal state associated with the covariance matrix.
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covariance
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Description:
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The covariance matrix that describes the Gaussian distribution of uncertainty for the nominal state, from which the sigma points are computed.
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sigmaPoints
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Description:
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The N x 2N+1 matrix that contains the sigma point values for all quantities in the provided nominal state.
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weights
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Description:
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The 2*N+1 x 2 matrix of weighting factors (where column 1 is the weights for the mean and column 2 is the weights for covariance).
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Syntax
CovarianceUtilities.GetSigmaPointsFromCovariance(myVariable1, myVariable2, myVariable3, myArray1, myMatrix1, myMatrix2, myMatrix3);
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See also
CovarianceUtilities Object
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