Use Convert Complex Data to output selected images calculated from complex data. Image types included are: Real (real portion of number), Imaginary (imaginary portion), Power (natural log of magnitude), Magnitude (square root of sum of the squares of the real and imaginary), and Phase (arc tangent of imaginary divided by real).

1. From the Toolbox, select Raster Management > Convert Complex Data.
2. Select an input data file.
3. Click OK. The Convert Complex Parameters dialog appears. Select the output band functions by selecting the check boxes next to the function names.
4. Select output to File or Memory.
5. Click OK. ENVI adds the resulting output to the Layer Manager.