Hi,bwbj
Thanks for your reply. As for the two levels processing steps you said,I have different opinions.The first level may not adjust for the effect of the incidence angle, as the pictutre show above. the second level : the normalization in the Range Doppler TC, it uses the following formula:
I think it simply adjusts the influence of changes in the incidence angle caused by the local topographic factors, not the effects of incidence angle in different range distsnce.
Chen