Why does the IR image occasionally go still and drift away while the PCT continues on?
During occasional “blackout periods” in IR temporal coverage (often lasting several hours), then the “nearest image” used by the algorithm remains the nearest image for several hours. The display in the MIMIC-IR algorithm will always keep the IR imagery true to its navigation, so the lat/lon positions in the image are always the same as long as the image is shown. However, as the frame of reference moves along, the IR image will drift away as it sticks to its original position. It would seem that moving the IR image along with the frame of reference would fix this problem. However, if the IR image were adjustable in this way, then it would cease to be a good spatial reality-check for the PCT product, which is its most important role.
