https://techcrunch.com/2019/10/22/aurora-insight-emerges-from-stealth-with-18m-and-a-new-take-on-measuring-wireless-spectrum/

Aurora Insight, a startup that provides a “dynamic” global map of wireless connectivity that it built and monitors in real time using AI combined with data from sensors on satellites, vehicles, buildings, aircraft and other objects, is emerging from stealth today with the launch of its first publicly-available product, a platform providing insights on wireless signal and quality covering a range of wireless spectrum bands, offered as a cloud-based, data-as-a-service product.

“Our objective is to map the entire planet, charting the radio waves used for communications,” said Brian Mengwasser, the co-founder and CEO. “It’s a daunting task.” He said that to do this the company first “built a bunker” to test the system before rolling it out at scale.