the impact of window size on the choice of the reference point in the InSAR calculation

[cirrusasf]

The bug

To Reproduce

Additional context

In the InSAR calculation, choice of reference point is critical. In our algorithm of determining the reference point, the window size plays a import role. In general,we want to pick the reference point from the big area with high coherence value. so we better choose window with enough size. Here I share the reference point are calculated with 5x5 window and 21x21 window

[cirrusasf]

https://docs.google.com/document/d/1_YvvVzvyNrlUjStMysXpMca9K1pckgL6oXMLOysytzY/edit#