Abstract: The invention concerns a method for making ammonium dinitramide from guanylurea dinitramide in one single process step. Guanylurea dinitramide is reacted with an ammonium sulfate in a reaction solution comprising water and acetone and an ion exchange gives ammonium dinitramide. By using acetone the yield is increased compared to known processes as formed guanylurea sulfate is poorly soluable in a water-acetone solution and precipitates, while guanylurea dinitramide has higher solubility in the solution than in only water. The guanylurea sulfate precipitate formed in the reaction solution that contains acetone is less sticky than if formed in water or in a water-alcohol solution and therefore easier to filter off. The use of acetone also allows lower process temperatures to be used than in previously known methods for producing guanylurea dinitramide.

Abstract: The present invention relates to a vector sensor for measuring particle movement in a medium. The vector sensor comprises a magnetic body that is held at a certain distance from a magnetometer in such a way that the magnetic body can move in time with a passing particle movement, wherein the magnetometer is arranged to detect the oscillations in the magnetic field that the movements in the medium produce.

Abstract: The invention relates to a device and a method for remotely determining the impulse response of an object irradiated by a pulse train with low-intensity pulses of electromagnetic radiation. A complete representation of the pulse train transmitted towards the object is known in advance, and a convolution between the signal representation of the pulse train and the signal of the detected response from the object is performed, which provides a signal representation of the impulse response. Said signal representation can then be used, e.g., to analyze possible defects in the structure of the object.

Abstract: The invention relates to a device and a method for determining whether a living person has been buried in collapsed ground. The device consists of a rod provided with a receiver unit and a signal processing unit. The receiver unit is intended to receive reflected radar signals transmitted from a radar transmitting antenna and transfer these signals to the signal processing unit. The signal processing unit which is provided with specific detection units determines whether the received signal have been Doppler shifted. By determining that the device can decide whether the Doppler shift depends on the moving chest of a breathing person buried alive.

Abstract: The invention concerns a method for making ADN from GUDN in one single process step. GUDN is reacted with an ammonium. source (ammonium-sulfamate, ammonium-sulfate, ammonia) and an ion-change gives ADN from GUDN in one process stage. The advantages are that the process gives pure ADN without potassium contaminants and that a smaller amount of solvent is necessary.

Abstract: The present invention relates to a vector sensor for measuring particle movement in a medium. The vector sensor comprises a magnetic body that is held at a certain distance from a magnetometer in such a way that the magnetic body can move in time with a passing particle movement, wherein the magnetometer is arranged to detect the oscillations in the magnetic field that the movements in the medium produce.

Abstract: The invention relates to a device and a method to determine whether a water leakage has occurred in ground by means of Doppler radar. The device comprises a radar emitting unit for emitting electromagnetic waves into the ground, a receiver unit for receiving signals reflected from a fluctuating water surface, a signal processing unit which band pass filters the received signal to obtain a signal that only comprises the Doppler shifted frequencies, creates a measure of the derivative of the reflected signal and, in a decision processor, compares this measure with a threshold value corresponding to the signal value of the background. If the measure of the derivative exceeds said threshold value a leakage is considered to have occurred.

Abstract: The invention relates to a device and a method for determining whether a living person has been buried in collapsed ground. The device consists of a rod provided with a receiver unit and a signal processing unit. The receiver unit is intended to receive reflected radar signals transmitted form a radar transmitting antenna and transfer these signals to the signal processing unit. The signal processing unit which is provided with specific detection units determines whether the received signal have been Doppler shifted. By determining that the device can decide whether the Doppler shift depends on the moving chest of a breathing person buried alive.

Abstract: A method is provided for teleoperating an unmanned ground vehicle having a control unit, a first drive unit, a second drive unit and a pan camera, arranged in front of or behind the nominal center of rotation (z) of the vehicle. The operator controls the translation and rotation of the camera, and thus his field of vision, relative to a camera-fixed coordinate system, and the movement of the vehicle is calculated to perform this camera movement. Consequently, the operator can in most cases ignore the vehicle dynamics and experience the feeling of controlling a floating camera. An unmanned ground vehicle with a control unit which performs the method is also provided.

Abstract: The present invention concerns a low-emissive paint comprising metal particles, a binder and a solvent. The metal particles consist of a metal with lower electro-negativity than 1.9 but higher than 1.1 or a mixture of such metals, and the binder consists of polyaniline—PANI—or a polymer where a thiophene group is included in the chain.

Abstract: In determining whether an object contains e.g. a hazardous substance or molecules of a hazardous substance the object is illuminated with light of a definite wavelength. A telescope collects and concentrates light scattered by the object and a plurality of individual picture elements in a picture element array in a camera receives and detects the collected and concentrated light. The detection signals from each of the individual picture elements are individually analyzed to produce a Raman-spectrum or some similar spectrum valid for the subarea of the illuminated area of the object that corresponds to the respective picture element. The subarea of the illuminated area that corresponds to one of the individual picture elements can be chosen to have a width or dimension chosen to correspond to the size or a dimension of a particle or a molecule of the hazardous substance.

Abstract: A method for a user to navigate in a surrounding world captured by one or more image sensors and displayed to the user in an image display area of a display device which in use is in front of the user's head and follows the movements of his head. When the user's head is directed in an area which the user can easily reach by turning his head, the display is controlled by his head direction. When the head direction reaches the edge of what the user can reach by turning his head, use is instead made of controlling by gaze direction of that displayed, in which case the point of the surrounding world pointed out by the gaze direction is continuously placed in a predetermined area of the image. The change occurs either automatically by the user's gaze direction being at the edge of the image display area or by a command, for instance with the user's voice or a motion of his hand.

Abstract: A device for optical remote monitoring, preferably an optically readable membrane-based microphone, and a system including such a device is provided. The device for optical remote monitoring includes a retroreflector and an acoustic membrane. The acoustic membrane suitably is a light-modulating component and modulates the reflection of an incident light beam in relation to the pressure field, from a sound source, to which the membrane is exposed. The retroreflector may be a corner cube having three sides with the membrane arranged on one of the sides. The membrane can be part of a side or one side may consist of a membrane.

Abstract: A microwave absorber, especially for high temperature applications, has at least one resistive sheet and at least one dielectric layer. The resistive sheet has a material of construction that is a MAX phase material.

Abstract: An interactive method of presenting information in an image to a user, who carries a head-mounted display device that presents an image of the surroundings. The user's head position and direction are established in relation to the surroundings and a calculating device establishes, based on this, which part of the surroundings is positioned in front of the user's head. Furthermore, the calculating device establishes where in a chain of information the user is positioned and, based on this, presents information in the form of a virtual image which is mixed with the real image. A central part of the image is then defined and fields and/or objects outside this area are shown in a non-disturbing way until the user's gaze has left the central part. The user informs the calculating device that he/she has received the information and, respectively, performed the current operations by looking at the fields/objects.

Abstract: A method of improving the burn rate and ignitability of aluminium fuel particles, and a thus modified aluminium fuel for use in propellant and explosive compositions and pyrotechnic charges. Aluminium fuel particles are treated with an aqueous solution of hydrofluoric acid and a fluoride and/or complex fluoride salt of an alkali metal and/or alkaline earth metal to form a surface layer of a fluoride complex bound to the aluminium fuel particle.

Abstract: The invention relates to a piezochrome composite comprising a matrix of a piezoelectric material with particles of a spin transition compound. The invention also relates to a device that beside said composite also comprises a voltage supply connected to electrodes provided on said matrix. In one embodiment is this device provided with a temperature stabilising device.

Abstract: A method for determining the positions of targets by bistatic measurements using signals scattered by the targets is provided in which the velocities of the targets can also be determined. The range of the transmitters is selected so that a target at an arbitrary point can be measured, by scattering in the target, by at least four cooperating measuring facilities. First the targets are associated by calculating, in two independent ways, two sets of sums of distances between transmission points and targets and, respectively, targets and reception points. Subsequently, the two sums are sorted with respect to distance, compared with each other, and the sums that correspond with each other within a predetermined margin of error are stated to correspond to conceivable targets. The association of targets is improved and completed by corresponding calculations being carried out for Doppler velocities.

Abstract: A method of calculating in near-real-time two possible angles of elevation of a projectile and associated times of flight so that the projectile can be made to act at a desired point The angle of elevation of the launching direction of the projectile and the time of flight are calculated in a process which is divided into two main parts, a calculation part which discretely timed calculates positions and associated points of time along a trajectory, and a logic part which sets a first direction of elevation, monitors the calculation of projectile positions and time of flight and interrupts the calculation at specified points to determine a solution, Then the logic part sets a second direction of elevation until two solutions have been found.

Abstract: The panes (1) of a naval vessel or military vehicle are often coated with a radar-reflecting layer (20) for reduction of the radar signature of the vessel/vehicle. At the same time this layer increases an enemy's possibility of recognizing the vessel in passive IR reconnaissance since the layer increases the reflectance also for IR radiation to a considerable extent. As a result, the intensity of IR radiation that an enemy receives from the panes is much lower than that from the rest of the vessel, which with signal processing can be used to increase the possibility of recognizing the vessel. According to the invention, it is suggested that the panes (1) on the outer face (8) also have a second layer (21, 22) to increase emittance especially within the IR range 2-20 ?m which is normally used for reconnaissance and the like. This second layer (21, 22) comprises especially two coatings, one of which is active in the IR range 3-5 ?m and the second in the IR range 7-14 ?m.