Abstract: Characterizing a cargo container and its contents. A system comprising an emitter to emit radio frequency (RF) energy, a receiver to receive an RF response related to the energy, and a processor operative to compare a plurality of RF responses. A method for characterizing a cargo container and its contents, the method including providing a system as described above, via the system: emitting a RF energy within a container, receiving an RE response of the container and the container contents, emitting second RF energy within a container, receiving a second RF response of the container and the container contents, and comparing the second RF response with the first RF response.

Abstract: Characterizing a cargo container and its contents. A system comprising an emitter to emit radio frequency (RF) energy, a receiver to receive an RF response related to the energy, and a processor operative to compare a plurality of RF responses. A method for characterizing a cargo container and its contents, the method including providing a system as described above, via the system: emitting a RF energy within a container, receiving an RF response of the container and the container contents, emitting a second RF energy within a container, receiving a second RF response of the container and the container contents, and comparing the second RF response with the first RF response.

Abstract: Characterizing a cargo container and its contents. A system comprising an emitter to emit radio frequency (RF) energy, a receiver to receive an RF response related to the energy, and a processor operative to compare a plurality of RF responses. A method for characterizing a cargo container and its contents, the method including providing a system as described above, via the system: emitting a RF energy within a container, receiving an RF response of the container and the container contents, emitting a second RF energy within a container, receiving a second RF response of the container and the container contents, and comparing the second RF response with the first RF response.

Abstract: A universal power manger capable of power converting a universal range of unregulated power inputs into a high-resolution programmable regulated (constant) output voltage or a high-resolution programmable (constant) current and of charging and/or diagnosing standard battery chemistries with a universal range of unregulated AC and DC power inputs. It includes an extremely high resolution monolithic potentiometer of at least 512 positions. Preferably, two or more extremely high resolution monolithic potentiometers are used to create a high resolution resistance chain, each having at least 512 positions and at least one tap point set according to a user selected output voltage and/or current. Each potentiometer has a resultant tap point selected by an analog switch in accordance with a user selected output that determines overall resistance in the resistance chain, the output voltage being proportional to the overall resistance.