Thanks a lot @qglaude. I tired with a better pair and still got results like this. Any ways thanks a lot!
Can i ask you why only 12 days?
@Vadim you have images separated by 6 days, it is even better. But out of Europe, it is not guarantied. In my case, 12 days is the best I can get.
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what if I need to get the speed of a glacier for a month or a year? can I use images with a period of one year? if not, what should I do? thank you!
You can still use image pairs of 6 days (e.g. one pair per month over one year) and see if the speed is constant over all pairs. Displacement is usually normalized as millimeters per year (mm/a)
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thank you!
Hello @ABraun I read that we have to use image pair of 6 or 12 days. So we cant use image say for example. One image of the date 09 October, 2016 and another image of date 10 October, 2017 to find out the annual period?
This is probably too long, because of temporal phase decorrelation will lead to bad phase quality.
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I see, okay thank you for the response!