Abstract: Systems and methods using single conductor guided surface electromagnetic (EM) waves to interrogate distant wireless active or passive sensor devices or media surrounding the conductor. The guided waves may be launched on the conductor over a wide frequency range (e.g., MHz to several GHz) using an RF launcher that is connected to an interrogator. Such guided surface EM waves can travel significantly longer distances as compared to the free space propagation of waves because they travel by waveguiding along the conductor surface. Using these waves, power and/or data can be delivered to sensors located on or near the conductor surface, and data can be received from the sensors.

Abstract: A method and apparatus for providing high assurance processing are herein disclosed. According to this example method, high assurance processing is provided by selecting a first active partition. A processor access cycle is received from a processor. Data is retrieved from a device according to the processor access cycle. The retrieved data is validated according to a selected active partition. The validated data is provided the processor.