Abstract: A real-time signal processing engine robustly detects, localizes, tracks and classifies ground targets based on radar signals from a multistatic radar system. The system differentiates between different targets based on an optimized cost function, which can include the total returned normalized pulse energy. The local transmitters/receivers can communicate with each other via the transmitted radar signals.

Abstract: Described are methods and apparatus, including computer program products, for topological mapping using a conductive infrastructure. A conductive infrastructure of a structure is excited with an excitation signal. The radiated signal is received, the radiated signal being based on the excitation signal and an impedance discontinuity within the conductive infrastructure. A location associated with the impedance discontinuity is determined based on the received radiated signal.

Abstract: A method of making a multilayered insulation product includes applying a retention layer to a first fibrous insulation layer, where the retention layer is porous to enable liquids to pass therethrough, applying a hardenable liquid to the retention layer, where some of the liquid passes through the retention layer and contacts the first insulation layer, and hardening the liquid to bond the retention layer to the first insulation layer. A second fibrous insulation layer can be applied to the retention layer after the liquid is applied to the retention layer, in which case the hardening of the liquid bonds the retention layer to the second insulation layer.