SPI not found for operator 'Azimuth-Shift'

Microwave Toolbox Problem Reports
#1

Hi,
I was trying to use graph builder to perform the Azimuth-Shift and Range-shift after geo-coding SAR image pair. But i could not find the Azimuth-shift and range-shift operator. I am using SNAP 4.0. Then I loaded graph downloaded from the forum which contained the Azimuth-Shift operator but got the error saying “SPI not found for operator ‘azimuth-shift’” and “SPI not found for operator ‘range-shift’”. I do not find the operator when I try to search it in the SNAP toolbox as well.

Regards,
Bhuwan

#2

To which graph are you referring?
Instead of ‘azimuth-shift’ and ‘range-shift’ there are AzimuthFilter and RangeFilter.

#3

Actually the graph I downloaded was from almost a year ago (china.xml (8.7 KB)
and
S1-Graph.xml (10.5 KB)

I did find Azimuth Filter and Range Filter tools. Now I am wondering are these same tool (i.e. azimuth-shift with Azimuth Filter and range-shift with Range Filter)

#4

From looking at the parameters I think they are not the same. So I also wonder where the shift operators are gone.

#5

Replace Azimuth Shift and Range Shift with the ‘Enhanced Spectral Diversity’ operator. It does both range and azimuth in one.

#6

Thank you very much. It clarifies my doubt.