Abstract: A highly integrated miniature radiometer chip includes a base board with opposing top and bottom etched metal layers to form interconnect and ground pads, and a cavity to provide space for surface mounted parts that are attached to the bottom of a middle board which mounts directly over the top of the base board. The middle board has radio frequency circuits and semiconductor chips at a top metal layer, and surface mounted parts, and ground and signal pads at a bottom metal layer. Metalized vias extending through the dielectric material connect the top and bottom layers. A top cover includes a feedhorn, a waveguide section, and isolation compartments and channels that overlie the RF circuits on the middle board. A dielectric insert is located inside the feedhorn to enhance the feedhorn performance and seal the radiometer chip from external air, humidity and contaminants.

Abstract: An aircraft nose radome has a first portion that is transparent to X band microwave energy, and a second portion that is transparent to W band microwave energy. The second portion may be an insert that is secured to the radome at an opening formed therein. The insert may have a multi-layer structure with first, second and third layers, a fourth layer of foam between the first and second layers, and a fifth layer of foam between the second and third layers. The insert may include a plurality of spaced-apart, elongated reinforcing members or ribs between the first and second layers and between the second and third layers that extend along a longitudinal direction defined by the insert. The insert may have a serrated cross-sectional configuration.

Abstract: Millimeter wave imaging devices are provided. A millimeter wave imaging device includes a housing and one or more heating elements inside the housing. The millimeter wave imaging device includes a flexible gasket on the housing. The millimeter wave imaging device includes a main lens attached to the housing by the flexible gasket. The millimeter wave imaging device includes a protective lens on an outer surface of the main lens. Moreover, the millimeter wave imaging device includes an Electromagnetic Impulse (EMI) filter attached to the housing and extending along an inner surface of the main lens. Methods of operating millimeter wave imaging devices are also provided.

Abstract: Vehicle navigation methods, systems and computer program products are provided that create a composite video image of a scene from video images of the scene generated by a plurality of video image sensors. The video image from each image sensor includes a respective array of pixels. The composite video image is created by selecting for a composite image pixel at a given position in an array of composite image pixels a pixel at the given position from one of the respective pixel arrays having the highest signal level or highest signal-to-noise ratio. The selecting is repeatedly performed for a plurality of given positions in the array of composite image pixels. The composite video image can be displayed via a display, such as a head-up display utilized in a vehicle.

Abstract: Vehicle navigation methods, systems and computer program products are provided that create a composite video image of a scene from video images of the scene generated by a plurality of video image sensors. The video image from each image sensor includes a respective array of pixels. The composite video image is created by selecting for a composite image pixel at a given position in an array of composite image pixels a pixel at the given position from one of the respective pixel arrays having the highest signal level or highest signal-to-noise ratio. The selecting is repeatedly performed for a plurality of given positions in the array of composite image pixels. The composite video image can be displayed via a display, such as a head-up display utilized in a vehicle.