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points by jcattle 2 days ago | 0 comments
Not really in developing countries which the OP is talking about.

While most developed countries have aerial imaging campaigns on some recurrent schedule (NAIP in the US is on a rolling 3-year cycle), this is usually not the case in developing countries.

Quite a few never had any large scale aerial imaging campaigns and most do not have them on regular schedules.

[–] nkmnz 2 days ago
Thanks for explaining!
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