unwrap (Signal Processing Toolbox)

Unwrap phase angles.

Syntax

p = unwrap(p)

Description

p = unwrap(p)

corrects the phase angles in vector p by adding multiples of

, where needed, to smooth the transitions across branch cuts. When p is a matrix, unwrap corrects the phase angles down each column. The phase must be in radians.

The unwrap function is part of the standard MATLAB language.

Limitations

unwrap tries to detect branch cut crossings, but it can be fooled by sparse, rapidly changing phase values.

`abs`	Absolute value (magnitude).
`angle`	Phase angle.