I am trying to make a series of DEMs for the area surrounding the Kalgoorlie open pit mine in Australia. However, when I create my DEM, I get some values that are almost 500 meters greater than values seen in the SRTM 3sec DEM. Additionally, I do not see relief patterns that I expected to see in the area. I have attached screenshots to better show my issue.
Thank you for your feedback! I tried to use some of the helpful tips presented to others in your links, with no success. I suppose to the best for me to do is chose a more suitable satellite to use for DEM generation.
actually not the worst conditions for DEM generation.
This pair could be suitable: temporal baseline 12 days and perpendicular baseline of 150m
maybe even this: temporal baseline 36 days and perpendicular baseline of 181m
As ERS and ENVISAT are now also freely availably from ESA, you can consider them as well, especially because there was a period when ERS-1 and ERS-2 operated in an offset of 1 day. ESA offers to search for pairs according to their baseline configuration: http://esar-ds.eo.esa.int/socat/SAR-ASA_IMS_1P/pair_search