If it touches speeds of upto Mach -5 , how's it hypersonic ? IMO we're simply getting carried away . Our hypersonic program is proceeding on track . We haven't reached there yet though we'd get there by the end of the decade if not before.
When the CMD Brahmos himself has gone on record during AI-23 , stating we'd take 7 yrs from date to develop a hypersonic version plus we've it from fairly reliable sources the Russians would share Zircon technology after 2027 , where did this hypersonic missile come from ?
As far as I am concerned the only interesting point was the idea of using magnetometers to detect aero objects , that in my opinion is doable , in near future to come up with a mil grade sol to passively detect aerial objects including stealthy ones
It seems use of magnetometers is the next big thing in military eg for navigation especially by vehicles moving at hypersonic speeds, and as I mentioned previously in my tweets in detecting submerged submarines etc
As for hypersonic or not that's a tall ask for a civilian system not designed to serve that purpose and it's obvious there will be glaring errors given the distances involved and the type of magnetometer themselves being used