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how to collect GCPs in ascending mode of ASAR??
- To: discuss@xxxxxxxxxxxxxxxx
- Subject: how to collect GCPs in ascending mode of ASAR??
- From: Nacho Cardiel <ncardiel@xxxxxxxxx>
- Date: Mon, 27 Oct 2008 12:50:38 -0700 (PDT)
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- Reply-to: ncardiel@xxxxxxxxx
Dear List,
I have several ENVISAT ASAR scenes. Some of them are in ascending and other are descending mode. I am using OrthoEngine to orthorectify them with the Toutin's model.
In the ascending mode the northward of the scenes are down. I am having several problems to collect my GCPs because of the view is rotated completelly different than my georreferenced scene. How must I proceed?
I tried to make an expedite geocoding using the GCPs which are coming with the scene but the result was a mess: upside is down yet. After the georeferencing proccess northward is southward, so georeferencing is unsucessfully. :-?
Any help is welcome.