Use Doris to process Sentinel-1 SAR images

[wenguang0412]

Hello everyone, I am encountering several issues while processing two scenes of Sentinel-1A data using Doris, and I am quite puzzled. I would like to seek some advice.

1. Why does the DEM data automatically downloaded by Doris either consist entirely of zeros or a single negative number? I am unsure how to convert the DEM I downloaded into a format that Doris can recognize.

2. Regarding warning messages: During the execution of Job3, a WARNING is displayed: "File: 2021-05-29.raw does not seem to exist (may not be a problem)"; for Job13, it shows "WARNING: RS_DBOW: min. line < overlap (writing: 6 lines with zeros before first resampled line)"; for Job23, it warns "WARNING: DEM does not cover entire interferogram."; and for Job30, it states "File: 'cint.raw' has wrong fileformat or dimensions: bytesperpix=8, #l=1455, #p=23692; size_computed=275774880B v. size_ondisk=16936200B," as well as a warning during the final phase of unwrapping that "File: unwrapped.raw does not seem to exist (may not be a problem)." I am uncertain about the impact of these warnings on the final results and have not been able to find relevant information.