Terrain correction: difference between local incidence angle, projected local incidence angle, and incidence angle from ellipsoid?

s1tbx
#1

Hello,

I am trying to generate a incidence angle band after terrain correction. In the processing parameters, there are three options: local incidence angle, projected local incidence angle, and incidence angle from ellipsoid. Does anyone know the differences between the three?

My goal is to get the accurate incidence angle for each pixel. Which one should I use?

Thanks,
Jasmine

#2

I suggest having a look at slides 4-8 here:

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