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ALOS DEM



Dear List,

 

I have some ALOS Prism Triplet imagery, L1B1 which come in four CCD images per look angle (a total of 12 images). I’ve been able to produce DEM’s from the pairs of strips e.g. Nadir 1 + Backward 1, Nadir 2 + Backward 1 which is necessary for this processing this product level, according to Phillip Chen. However, the process is time consuming and there are slight differences in the DEM produced by each stereo pair. Ideally, I would like to produce a DEM from the whole scene, since Orthoengine 10.2. will stitch the data together on import. However, whenever I do this, I get strange results in the output DEM. Has anyone found a solution to this ? Ideally I suppose I would have the level L1B2R product in which each look angle is a single scene, but I do not.

 

Thanks in advance.

 

Paul