Commercial satellites can be used as a defense against hypersonic weapons?

National Defense:

The Defense Department could use commercial satellites to help defend against enemy hypersonics, the vice chairman of the Joint Chiefs of Staff said Aug. 10.

Pentagon officials have been sounding the alarm in recent months about China and Russia’s pursuit of these cutting-edge capabilities that would pose major challenges for the United States’ existing missile defense architecture. Hypersonic missiles can travel at speeds of Mach 5 or faster, and are highly maneuverable.

“If you think missile defense is easy, think again,” Air Force Gen. Paul Selva said at an event on Capitol Hill hosted by the Mitchell Institute for Aerospace Studies.

“You’re shooting a bullet with a bullet. And it gets worse when a bullet is going 13 times the speed of sound, and can maneuver,” he added. “Wouldn’t it be interesting if our commercial partners’ constellation of satellites actually had some capacity to contribute? And if that’s true, why would we build our own?”

The Defense Department needs to better take advantage of the innovation in space technology that is happening in the commercial sector, Selva said.

To mitigate the threat posed by enemy anti-satellite weapons, Pentagon officials are looking at leveraging less expensive, more distributed assets, and piggybacking on commercial space launch platforms.

“It’s not enough to just build elegant military constellations anymore,” Selva said. “The commercial company can build a satellite for $10 million and launch it for $1.5 million, and proposes to build 500 of them,” he said. “We need to figure out how to hitch a ride. We need to figure out how to engineer that data into the systems to help do command and control in warfighting.”

Detection and tracking are critical steps for shooting down enemy missiles. The United States needs a more robust space-based sensor layer to help counter the growing threat, especially when it comes to hypersonics, missile defense advocates have said.
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I think it is smart to use off the shelf hardware where possible.  Besides the economies of scale, these platforms can be continuously improved and upgraded in ways military equipment has difficulty doing.