GNSS/GPS independent secure & safe navigation:

Challenge: In current geopolitical tension we see an increased GPS jamming and spoofing of positioning. We are also accelerating development of autonomous vehicles/vessels, in air, at seat, under water, on ground and under ground that needs to operate with high precision in GPS denied environments. The need for an accurate positioning for narrow navigation is increasing

What if we can improve position-accuracy without dependency on GNSS/GPS and wireless communication and navigate with centimeter precision in GPS-denied environments?