Array NEST

I'm trying to extract the phase component from a series of ASAR WSS datasets from which I want to derive coherence.

I've managed to deburst and mosaic the Phase components of the five sub-swaths, next I want to co-register the images as a set prior to estimating coherence, however, the coregistration tool will not allow me to and does not register the bands. I think it is because the mosaiced product does not have the required metadata but I do not know to retain the metadata in the mosaic process or replace it.

Does my methodology sound reasonable? If so what is the best way to proceed? If not, what is the best manner in which you can estimate coherence from a set of ASAR WSS images.

Hi Luis,

thanks for your response, I work with Nick so thought I would reply.

What we are trying to do is estimate coherence between a temporal selection of WSS scenes which was why we had assumed we would need to mosaic the data then we could coregister it and then calculate the coherence. Or would we be better placed comparing the sub swaths between the temporal images?

Is the metadata easily incorporated into a mosaic and if so how can this be done?

Look forward to hearing from you

Thanks

Charlotte

In order to preserve the phase-information InSAR operations must always be done first, i.e. you need to coregister the sub-swaths separately, calculate the coherence and then mosaic the results.

Regards,

Marcus