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OVERCOMING AN ALBATROSS : FUSING LANDSAT & SPOT 1-4 DATASETS
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OVERCOMING AN ALBATROSS : FUSING LANDSAT & SPOT 1-4 DATASETS
landsat data fusion spot 1-4
2/20/17 2:10 PM
Hello dear Forum Members,

I must say that I am cutting my teeth on geo spatial software and manipulation of remotely sensed data and so I urgently need tecnical support.

I am carrying out a research to assess the impact of climate change on vegetation dynamics and i ma measuring VIs ( NDVI)
Unfortunately, over my AOI, there is a huge challenge of data inconsistency and gaps.

Given that I am carrying out an assessment of rural communities of about 140km, I desire data with moderate spatial resolution and landsat and SPOT 1-4 falls into this category.

I elected to use Landsat but the data coverage under the timeline of review is poor due to the absence of sensor and the interruption caused by the commercialization of Landsat during the period. To this extent I have only been able to retrieve 3 clear images in a period of 10 years. After the 2003 Landsat SLC off issue, there are about 7 more appreciable Landsat images.

To this end , I am procuring data from SPOT which unfortunately also has only 9 cloud clear images over the AOI.

Consequently, I am strongly considering the data fusion of SPOT and Landsat and I would like to know whether BEAM could be useful in this regard.

For a temporal dense investigation in a timescale of 25 -30 years, I would be comfortable with at least 20 images over this time line to support the optimal trajectory investigation of changes in NDVI using a R statistical software.

Can BEAM accurately do this? or are there any suggestions? I would therefore be very grateful if anyone in this forum can offer useful ideas and advice / technical support on what data fusion software I can use and maybe a video tutorial / documentation on how to use the software for fusing LANDSAT and SPOT.

With kind regards
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RE: OVERCOMING AN ALBATROSS : FUSING LANDSAT & SPOT 1-4 DATASETS
2/20/17 3:34 PM as a reply to Nsikan-George Emana.
Hi,

thanks for your interesst in BEAM. But as you might have seen on the start page it is not in development any more and therefor there is not much traffic here anymore. I would recommend to visit the forum of the successor of BEAM. It is called SNAP. The web page is: http://step.esa.int

Regarding your question, I can already say that neither BEAM, nor SNAP directly support a data fusion.
Both support. for example, collocation and mosaicing of the data or you can manually do band shifting using arithmetic expressions on band. But there is no data fusion support in first place.
However, I would recommend that you post your question again in the SNAP forum. It is quite vital and maybe some user can help you.
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RE: OVERCOMING AN ALBATROSS : FUSING LANDSAT & SPOT 1-4 DATASETS
2/22/17 11:34 AM as a reply to Marco Peters.
Many thanks Peters for this leading info.
I will do that.
With kidn regards
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