An image of a US submarine near Hawaii, captured by
at a resolution of 0.5m.
I went through the company's website. My understanding is that the company does not have satelittes of their own. If they have we would have known. They buy images from commersial constellation and do big data analysis and categorization through image processing, then present to users according to their need.
In this case, it would be that they bought the 0.5m image of this geographical area from someone. How would they know this is a US submarine? That is where their jod comes in. Their system would analyze images over long period and trace this object back to US submarine base. They would also take in other sources of information such as ADSB and AIS.
Here is an article on this company,
. In it the article describe how they track USAF C-17 flying from Travis AFB to Hickam AFB with assistance of ADSB
通过系统的ADSB与卫星影像结合,跟踪美空军C-17,从加州travis AFB执行任务到夏威夷Hickam AFB的过程