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Residuals and residual covariances from direct state measurements for insfilterAsync


[res, resCov]= residual(FUSE,idx,measurement,measurementCovariance) computes the residual, res, and the residual covariance, resCov, based on the direct state measurement and measurement covariance. The measurement maps directly to the states specified by indices, idx.

Input Arguments

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insfilterAsync, specified as an object.

State vector index of measurement to correct, specified as an N-element vector of increasing integers in the range [1, 28].

The state values represent:

Orientation (quaternion parts)N/A1:4
Angular Velocity (XYZ)rad/s5:7
Position (NED)m8:10
Velocity (NED)m/s11:13
Acceleration (NED)m/s214:16
Accelerometer Bias (XYZ)m/s217:19
Gyroscope Bias (XYZ)rad/s20:22
Geomagnetic Field Vector (NED)μT23:25
Magnetometer Bias (XYZ)μT26:28

Data Types: single | double

Direct measurement of state, specified as a N-element vector. N is the number of elements of the index argument, idx.

Covariance of measurement, specified as an N-by-N matrix. N is the number of elements of the index argument, idx.

Output Arguments

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Measurement residual, returned as a 1-by-N vector of real values.

Residual covariance, returned as a N-by-N matrix of real values.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2020a