Break out the pocket book and pay Planet Labs to do it. You could do it with much less frequent visits than this probably the search area for it every 2 hours isn't very large and image recognition systems are pretty good. The big threat is cloud cover.

https://www.planet.com/pulse/12x-rapid-revisit-announcement/

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OneDeuxTriSeiGo 3 hours ago | parent | next [-]

Note that that article is from 2020. Nowadays the frequency is actually down to 90 minutes/1.5hr. The resolution is up as well and they can do massive image capture (~500km^2) and video (120sec stream) from their passes.

Also nowadays they provide multi-spectal capture as well which can mostly see through cloud cover even if it takes a bit more bandwidth and postprocessing.

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matkoniecz 3 hours ago | parent | prev [-]

What if US government bans US-based companies from selling pictures within area where carrier operates?

(of all "national security" reasons these is one of more reasonable ones)

	▲	rtkwe 3 hours ago \| parent \| next [-]
		The problem then is the black out zones themselves reveal a lot as well if adversaries can find their bounds. That narrows the search area for their own observation satellites immensely even if it's too large to respond to IRL.
	▲	jyoung8607 3 hours ago \| parent \| prev \| next [-]
		If the restricted area is large, a carrier is regionally disabling for an imagery provider. If it's smaller (and therefore must move over time to follow the carrier group) as soon as the imagery provider starts refusing sales in an area, any customer can test and learn its perimeter with trial purchases, find a coarse center, and learn its course and speed. You don't care about anything else until there's actual hostilities.
	▲	OneDeuxTriSeiGo 3 hours ago \| parent \| prev \| next [-]
		Well in that case congratulations. You've just made it easier. Now you don't even have to track them. You just have to look for the blacked out box, the "error we can't show you this", reused imagery from their long running historical imagery dataset, or improperly fused/healed imagery after alteration. So now you don't have to do the tracking, just find the hole. And then you can use a non-US provider to get direct imagery now that you know exactly where to look.
	▲	torginus 3 hours ago \| parent \| prev [-]
		It would make tracking impossible, as no other country operates satellites.