Hi Alexey,
Thank you for the explain, however, I find this issue occurs only when it is NAD83 (2011). If I change the GCS to EPSG:4269 NAD83, then the DEM/Ortho TIF will be readable like:
GEOGCS["NAD83",
DATUM["North_American_Datum_1983",
SPHEROID["GRS 1980",6378137,298.2572221010002,
AUTHORITY["EPSG","7019"]],
AUTHORITY["EPSG","6269"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","4269"]]
However, if I process the data in NAD83(2011) or with NAVD88, then it will return:
GEOGCS["NAD83(2011)",
DATUM["unknown",
SPHEROID["GRS 1980",6378137,298.2572221010002,
AUTHORITY["EPSG","7019"]],
AUTHORITY["EPSG","1116"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","6318"]]
Would this be a problem only for NAD83 (2011)? Since if I use Compound PRJ it will return the header as Proj_CS as "noname", as well as DATUM "unknown".
Thanks a lot!