What should the pixel resolution of ALOS-2 PALSAR-2 radiometric terrain corrected data?

kaushik002 · April 28, 2020, 3:31pm

In Range Doppler Terrain correction what resolution should be set for RTC of ALOS-2 PALSAR-2 data?

jun_lu · April 28, 2020, 4:44pm

Use default pixel spacing. If the processing time is too long, you can increase the pixel spacing

kaushik002 · April 28, 2020, 4:46pm

Can I reduce the pixel spacing from the default (7.25m) to 5m?

ABraun · April 28, 2020, 5:00pm

you can enter any value, but increasing the resolution below the suggested one will not produce results of better quality. It will simply resample the result to this resolution, 5 m in your case.

kaushik002 · April 28, 2020, 5:14pm

How to know the suggested value?

ABraun · April 28, 2020, 6:16pm

it’s the one that SNAP automatically enters in the field when you select an input product for the Terrain Correction. It depends on the sensor, the pre-processing steps and the azimuth and range resolution of the product.