A dynamic thermal infrared stealth composite material based on dual phase change is a VO.sub.2/mica-based phase change thermal storage thin layer composite material composed of a VO.sub.2 nanoparticle coating and a mica-based phase change thermal storage thin layer, wherein the mica-based phase change thermal storage thin layer consists of stearic acid and a vanadium-extracted mica substrate in a mass ratio of 3-5:5-7. The composite material based on dual phase change is prepared by extracting vanadium from vanadium mica using a roasting and acid leaching process to prepare VO.sub.2 nanoparticles and a vanadium-extracted mica, embedding a phase change functional body into the vanadium-extracted mica as a support substrate to prepare a mica-based phase change thermal storage thin layer, and coating the VO.sub.2 nanoparticles on the mica-based phase change thermal storage thin layer. The dynamic thermal infrared stealth composite material can synergistically reinforce thermal infrared stealth performance.

Systems and methods for dynamic camouflaging are disclosed. A computer-implemented method can be used with the system including determining, by a computing device, if current environment image data is available for a location of one or more users, and instructing, by the computing device, at least one image-enabled clothing system of the one or more users to display a camouflage image based on the determining. The camouflage image is based on the current environment image data when the current environment image data is available, and the camouflage image is based on historic image data associated with the location of the one or more users when the current environment image data is not available.

Systems and methods for dynamic camouflaging are disclosed. A computer-implemented method can be used with the system including determining, by a computing device, if current environment image data is available for a location of one or more users, and instructing, by the computing device, at least one image-enabled clothing system of the one or more users to display a camouflage image based on the determining. The camouflage image is based on the current environment image data when the current environment image data is available, and the camouflage image is based on historic image data associated with the location of the one or more users when the current environment image data is not available.

Systems according to the present disclosure provide one or more surfaces that function as power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface wave causes near replication of current present in one fractal cell in an adjacent fractal cell. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges. The fractal plasmonic surfaces can be utilized to facilitate electrical conduction with lower ohmic resistance than would otherwise be possible in the absence of the fractal plasmonic surface(s) at the same temperature.

Systems according to the present disclosure provide one or more surfaces that function as power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface wave causes near replication of current present in one fractal cell in an adjacent fractal cell. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges. The fractal plasmonic surfaces can be utilized to facilitate electrical conduction with lower ohmic resistance than would otherwise be possible in the absence of the fractal plasmonic surface(s) at the same temperature.

The invention comprises of a UAV designed to limit visually contrast and audibility in flight for covert surveillance operations, a method of configuring the UAVs structure to further reduce its visual signature to take account for the atmospheric and terrestrial environment it will operate in and a method of conducting a covert surveillance operation to actively minimise the UAVs visual & auditory signature from the viewpoint of an individual under surveillance. Both passive and active illumination are used to reduce the visual signature of the UAV. The UAV is actively camouflaged using lighting techniques that utilises the limitations of the human visual system and the optical effects of light interacting with the terrain, atmosphere and aircraft. The visual camouflage is directional. The audible signature of the UAV is reduced through the design of the propulsion system and the mode in which the UAV is operated.

A vehicle having a chassis and at least one add-on system. The add-on system is arranged on the vehicle. Furthermore, at least one movable wall and/or panel is arranged on the vehicle. In this case the add-on system as well as the movable wall and/or panel can assume an operating position and a rest position, wherein in the rest position the add-on system is completely concealed by the movable wall and/or panel. In the rest position the movable wall and/or panel is inserted into the contour of the vehicle in such a way that a continuously closed contour is present on the vehicle.

A method for producing a layer of a device for electromagnetic radiation absorption, includes: providing a ply of powder material in the layer to be produced of the device; providing a predefined concentration distribution of particles for electromagnetic radiation absorption in the layer; providing a first binder and a second binder for the powder materials, wherein the first binder includes particles for the absorption of electromagnetic radiation, wherein the second binder includes a lower concentration of identical and/or different particles than the first binder; determining a mixing ratio between the first binder and the second binder for every position in the layer; selecting a position of the layer; mixing the first and second binder according to the mixing ratio for the selected position; wetting the powder material at the selected position using the mixed first and second binders; and repeating selecting, mixing, and wetting to produce the layer.

A site-specific photographic camouflage arrangement and method for making the same are provided. The site-specific photographic camouflage arrangement includes a digital photographic image and distorting disruptive patterns placed on the digital photographic image to create visual confusion to disguise the recognizable form of a camouflaged object by breaking up its outline.

A site-specific photographic camouflage arrangement and method for making the same are provided. The site-specific photographic camouflage arrangement includes a digital photographic image and distorting disruptive patterns placed on the digital photographic image to create visual confusion to disguise the recognizable form of a camouflaged object by breaking up its outline.