Drainage network delineated using ALOS PALSAR AW3D30 DEM shows good accuracy particularly in relatively low lying area as compared to SRTM 30 m DEM. ALOS PALSAR RTC dem product from ASF although with 12 m spatial resolution shows wrong drainage network in low lying area and do not even match with those by AW3D30 DEM? Any idea/software to correct the ALOS PALSAR RTC dem product from ASF with 12 m to match the drainage conditions (at least as in AW3D30) in the watershed area?
Dear Kale
I think at the following link you can find the answer of your question...
Article Determining the best remotely sensed DEM for flood inundatio...
the best
Azizian
Dear Dr. Asghar, thank you for your suggestion. I will go through your research article. Thank you once again. With best wishes, Ravindra V Kale
Dear Kale Sir,
You can use MERIT DEM (http://hydro.iis.u-tokyo.ac.jp/~yamadai/MERIT_DEM/). As, this DEM is made by considering various DEM such as SRTM, AW3D. Hence, the error will be probably less as compared to the individual one.
Good Luck
Thank you dear Ashish Kumar Ashish. I have checked SRTM and AW3D30 DEM. I find AW3D30 DEM is Better than SRTM 30 DEM.
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