[leewoneung]

I would like to see the settlement of PS points over time. So is it better to use a time-series analysis rather than a cumulative displacement??

[leewoneung]

oh sorry, I have some mistake that is my question.

First I had choosed spatial coherence > 0.7 and I completed a series of preliminary works.
And I choosed 1-Sigma/mu Index ,So I completed a series of PSInSAR works.

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First I had choosed 1-Sigma/mu Index > 0.7 and I completed a series of preliminary works.
And I choosed Velocity , consequently I completed a series of PSInSAR works and I getted displacement map.

I Wanted to Decrease Values That are displacement. but I getted Increase Values.
My Study area is railway so I think that place should be subsidence.

[leewoneung]

3. if the cumulative displacement CumDisp.mat file is not there, it means it was not saved. Is the velocity there? If the velocity is there and the cumulative displacement not, it means you estimated a linear model, so, the cumulative displacement was not produced. To know to cumulative displacement, just multiply the velocity by the observation time. If the velocity is not there either, it means you did not save your results.
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What can I save velocity?
or
if velocity equals def.trend, I got the velocity.
if I have a linear model, so I couldn’t cumulative displacement,
How can I get cumulative displacement???
….
I read manual dozens of times But I don’t understand “cumulative displacement” step.

[Author]

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