Abstract: A method and system of aligning a helmet mounted display mounted to a helmet is disclosed. A method may comprise aligning a first and a second helmet mounted display guide symbol with a reference direction, respectively; selecting the alignment of the first and second helmet mounted display guide symbol with the reference direction, respectively; aligning a first and a second stabilised guide symbol, starting at positions of the aligned first and second symbols, respectively, with the reference direction, the first and second stabilised symbols being stabilised to reduce the movement of the stabilised symbol with respect to the reference direction in response to movements of the head of the user; selecting the alignment of the first and second stabilised guide symbol with the reference direction, respectively; determining a relative position and orientation between the helmet and the display according to the positions and orientations of the helmet at the alignments.

Abstract: Controllers, method and programs for controlling machines are provided. For example, A method comprises determining a resistance value for a loss compensation resistor, updating at least one control equation based on an equivalent circuit using the resistance value and controlling the machine based on the updated at least one control equation. The resistance value represents a plurality of electro-magnetic losses of a machine. The resistance value can be determined from an inverse resistance value.

Abstract: The present invention relates to an articulated tracked vehicle comprising a front and a rear vehicle unit connected by means of a rigid load-carrying frame. The load-carrying frame is pivotally attached to the front vehicle unit about a substantially vertical front steering link and pivotally attached to the rear vehicle unit about a substantially vertical rear steering link. The vehicle further comprises control means arranged to steer the front vehicle unit relative to the load-carrying frame about the front vertical steering link and to steer the rear vehicle unit relative to the load-carrying frame about the rear vertical steering link, wherein the control means is arranged such that the front and rear vehicle units are individually steerable relative to the load-carrying frame about their respective vertical steering links.

Abstract: An air-cooled antenna comprising one or more separate antenna arrays (4) and a plurality of separate respective radio transmitter and/or receiver modules (3) each adapted for generating and/or receiving radio-frequency (RF) transmissions for an antenna array associated therewith. An antenna housing (2) contains the transmitter and/or receiver modules and has a ventilation inlet (8) for receiving air into the housing to an exhaust outlet (9) for outputting the air from the housing. A ventilation driver (6) drives an air flow rate through the housing from the ventilation inlet to the exhaust outlet.

Abstract: A continuous, always on, high accuracy AC reference signal is added to an AC voltage of interest to calibrate the AC voltage of interest. The AC reference voltage has a first frequency. The AC voltage of interest has a second frequency. A control system having calibration.

Abstract: A system and method of navigating through a structure includes receiving data representing a map of a structure (200), the structure map data including a plurality of locations and routes (303) between at least some of the locations, and receiving (602) data representing a user selection of one of the locations of the structure map. The method receives (602) location marker information from a location marker positioned in or on the structure and uses (604) the received location marker information to locate a current location of the user device within the structure map. The method further uses (606) the structure map data to generate navigation data for navigating from the current position to the selected location.

Abstract: The present invention is a driver's hatch for an armored vehicle. The hatch includes a dome hatch for normal operations and a pop-up section. The pop-up section, when in the lowered position allows the cab to freely rotate above it. When in the raised position, the pop-up section allows the driver to look out of the vehicle through transparent armor windows and thus remain under armor protection.

Abstract: A waveguide having a substrate, a first germanium sidewall and a second germanium sidewall. The waveguide is formed by growing the first germanium sidewall and second germanium sidewall on the substrate.

Abstract: The present invention relates to a floating device for an amphibious two-bodied vehicle with a front vehicle unit and a rear vehicle unit, which are mutually pivotable, wherein the floating device comprises a floating element configuration extending along essentially the entire length of the long sides of the vehicle and being arranged to provide additional displacement, wherein said floating element configuration is arranged for accommodating mutual pivoting of said vehicle units during floating as well as non-floating drive. The present invention also relates to an amphibious vehicle.

Abstract: A small, portable wireless router combined with a wideband, wearable antenna supports a local wireless network created on the move for exchanging information between multiple personnel spread over a useful geographic area. Multiple information sources of different types, such as cameras and GPS, can use the network to send information feeds to mobile users with interface devices such as smartphones that can deliver multiple feeds at the same time to the user. Devices connected to other networks, such as information processing devices at fixed operating bases, can deliver information feeds to the network.

Abstract: A method of moving an elongate member (12) along a predetermined axis (A-A) for the introduction or withdrawal thereof to or from a free body (11). The method includes providing an elongate guide surface (18) extending parallel to the predetermined axis, and also providing a plurality of support elements (26) which are slidable on the support surface in a direction parallel to the predetermined axis. The elongate member is supported on the support elements so that at least a major portion of the mass is supported. The elongate member and the support elements are moved along the predetermined axis. Apparatus for moving an elongate member in this manner is also provided.

Abstract: A communication network traffic control element is disclosed which is arranged to receive traffic, such as voice and data, as a plurality of discrete traffic packets at an input and communicate the traffic as a serial traffic stream to an output. The traffic control element can include a receiver which is arranged to receive the traffic packets, and a processor which is arranged to communicate the serial traffic stream to the output. The processor can include a buffer to vary a traffic output rate from the processor independently of an input rate of traffic flow to the receiver.

Abstract: A method of providing apparatus comprising: providing a first store and a first payload on or in the first store, the first store being for mounting to the outside of an aircraft; acquiring aerodynamic properties, moments of inertia, and the mass distribution of the first store and first payload; providing a second store and a second payload, the second payload being on or in the second store, the second store being for mounting to the outside of the aircraft, the second payload being different to the first, the second payload comprising a sensor and/or a projecting means; and configuring the second store and the second payload such that the aerodynamic properties, moments of inertia, and mass distribution of the second store and the second payload are substantially the same as those of the first store and first payload.

Abstract: In a directed infrared countermeasure system, to assure parallelism between the line-of-sight to a target and the output beam, the input and output mirrors are fixedly attached to a uni-construction arm mounted to a rotatable azimuth platter to which internal mirrors are also fixedly attached. A system is provided for zeroing out alignment errors by developing an aim-point map for the gimbal that records initial alignment errors induced by manufacturing tolerances and uses the aim-point map error values to correct the output mirror orientation. The system also corrects for alignment errors induced by thermal gradients.

Abstract: A system and method for situational awareness and target cueing for use in military applications is disclosed. In extreme low light situations where the LLL sensor cannot provide SA information, the system allocates thermal information to the green SA channel to maintain the supply of contextual information to the user and thus situational awareness (SA) never drops below the native resolution of the thermal sensor. This improved SA capability, surpasses any existing LLL sensor technology in a single channel (stand-alone) application in overcast star light and below conditions.

Abstract: Techniques and structures to facilitate efficient replacement of windows/domes of optical systems, such as turreted pointer/tracker systems and seekers and other such gimbal-based or fixed targeting systems. The techniques can be implemented, for example, in a mounting ring or bezel, wherein the dome/window center of curvature is actively aligned during assembly to a reference feature on a mounting bezel during the dome-to-bezel alignment. This reference feature then mechanically registers the dome-bezel assembly to a given chassis. In some embodiments, the techniques allow for positioning of a replacement window/dome on an optical lens system, such that co-boresight of multiple beam paths is automatically maintained.

Abstract: A system and method for dynamically planning a network is presented. One method may begin by determining network parameters for connecting nodes to a network and decision variables associated with radios and/or nodes in the network. Constraints may be established to narrow possible values of the network parameters and/or the decision variables. The constraints may be based on one or more of: values associated with connecting a radio to a node in the network, values associated with connecting two nodes in the network together over a communication link, whether a node can connect to a GIG node and a flow balance in the GIG node. To find possible links in the network that are optimal, the method may minimize an equation based on the network parameters, constraints and decision variables to determine optimal communication links between pairs of nodes in the network, pairs of nodes and radios and/or pairs of radios.

Abstract: A system and method for installing a battery in an electronics module is presented. A battery mount includes an elongated battery can with first and second ends and receives a battery through the second end. An insulating sleeve with first and second ends is fitted around the first end of the battery can. A metallic cap is placed over the first end of the insulating sleeve and around a portion of the insulating sleeve. A non-conductive housing is mounted in the electronics module to receive the battery can and the battery. The metallic cap is attached to a front panel of the electronics module when the battery can and the battery are inserted into the housing. The insulating sleeve and non-conductive housing isolates terminals of the battery from a surface of the electronics module and the metallic cap provides for electromagnetic interference shielding of the battery.

Abstract: The invention pertains to a device for signature adaptation, comprising at least one surface element (100; 300; 500) arranged to assume a determined thermal distribution, wherein said surface element comprises at least one temperature generating element (150; 450a, 450b, 450c) arranged to generate at least one predetermined temperature gradient to a portion of said at least one surface element. Said surface element (100; 300; 500) comprising at least one display surface (50), wherein said display surface (50) is arranged to radiate at least one predetermined spectrum. The invention also pertains to a method for signature adaptation and an object such as a craft provided with the device according to the invention.

Abstract: The present invention relates to a system and method for providing channel access synchronization in a time division multiple access (TDMA) multi-hop network employing a plurality of time slots defined within a frame structure which repeats. The system and method includes nodes which have local clock variables. The local clock variables generate an expected arrival time of signals from other nodes in the network. Each node then determines whether the local clock variable needs adjusting after receiving a transmission and comparing the expected arrival time with the actual arrival time. Thus, time synchronization across the network is distributed and updated locally at each node. Networks may be merged by casting out nodes in one network and joining those cast out nodes with the other network. Newly joined nodes are thereafter time synchronized into their new network by comparing actual and expected arrival times and updating their clock accordingly.