Localisation of trapped victims using spatially distributed, synchronised FMCW radar sensors

For the localisation of trapped victims in complex surroundings, we propose a radar concept of spatially distributed, synchronised FMCW radar sensors with an associated algorithm. Multi-pass propagation and signal delay caused by propagation through inhomogeneous material are addressed by using the principle component analysis on redundant vital signatures and optimising refractive indexes, respectively. The algorithms are verified on real and simulated measurements.