BPS depends on terrestrial stations instead of satellites, like Loran, which was used in the past.
BPS is at least as easily jammed or disabled as GPS.
With the gravimeter discussed in the article, and with adequate maps, one can navigate autonomously, without depending on any external help.
Moreover, BPS appears to be intended to cover only continental USA. There are no plans to use radio frequencies that would allow global coverage, like Loran had in the past.
BPS depends on terrestrial stations instead of satellites, like Loran, which was used in the past.
BPS is at least as easily jammed or disabled as GPS.
With the gravimeter discussed in the article, and with adequate maps, one can navigate autonomously, without depending on any external help.
Moreover, BPS appears to be intended to cover only continental USA. There are no plans to use radio frequencies that would allow global coverage, like Loran had in the past.