Abstract: Disclosed are techniques and systems including a number of nodes operable to detect radio frequency signals within a radio frequency environment, and a central unit operable to communicate with each of the plurality of nodes. Each node is operable to receive a set of trigger conditions along with recording configurations, check the trigger conditions based on the sensed or measured signals in the radio frequency environment, determine that at least one of its trigger conditions to be true, and in response to determining that at least one of its trigger conditions is true, send a trigger to all other nodes of the plurality of nodes. The trigger indicates which of the trigger conditions is true. In-phase and Quadrature-phase data is recorded according to a recording configuration of received recording conditions, and the recorded IQ data is uploaded from each respective node to a central unit for further processing.

Abstract: Multilayer armor includes an outside armor layer, a first armor layer underneath the outside armor layer, a second armor layer underneath the first armor layer, and a truss layer underneath the second armor layer. In another variation, the multilayer armor includes an outside armor layer, a composite layer underneath the outside armor layer that comprises a plurality of spheres, a second armor layer underneath the composite layer to provide a rigid support to the composite layer, and a third armor layer underneath the second armor layer. The second layer may comprise a composite material that includes a plurality of tightly nested layers in a self-assembling arrangement of spheres made of a high hardness material bonded together using a matrix.