Abstract: Communication apparatus comprises a first transceiver unit (205A) and a signal processing device (106) configured to receive a signal from the first transceiver unit and to produce a signal for transmission by the first transceiver unit. A cable (201A) connects the first transceiver unit to the signal processing device. The first transceiver unit comprises a housing; a first pair of transducers (204T, 204R) located at, or adjacent, a first end of the housing, and a second set of transducers (206T, 206R) located at, or adjacent, an opposite end of the housing.

Abstract: Disclosed is an image processing method and apparatus. The method comprises: acquiring a reference time code such as a Coordinated Universal Time signal; displaying, on a display (110), a value based on the reference time code; imaging, by a sensor (200), the display (110), thereby generating an image of the display (110); processing, by an image processor, the image including generating, based on the reference time code, a time-stamp for the image; and comparing the value displayed on the display (110) in the image to the time-stamp to determine a latency value. The latency value may be used to correct time-stamps of images capture by the sensor (200) and determined by the image processor.

Abstract: A system for remotely sensing light emanating from within a monitored environment. The system comprises one or more retro-reflective optical elements bearing a reflective optical coating upon a surface thereof and positionable within the environment to be monitored. A light source is arranged to direct a beam of light at the optical element(s), and a detector is arranged to receive from the optical element(s) light returned by the optical coating in response to the beam of light and to detect a property of the monitored environment according to said returned light. The optical element(s) includes a body comprising a core part of positive optical power and clad by a cladding part. The refractive index of the core is greater than that of the cladding. The optical coating is arranged over the cladding to receive light which has been at least partially converged by the core part for subsequent retro-reflection.

Abstract: The following invention relates to split hulls, particularly to V shaped split hulls with a biased resilient member to mitigate against shock or blast. There is provided an armoured land vehicle comprising; a lower armoured v shaped hull; an upper hull which is located above and slidably engaged in a vertical plane with said hull, wherein there is at least one biased resilient member located between said upper hull and lower hull, to reduce the travel between said upper and lower hulls in the event of a shock event.

Abstract: A system is described for remotely sensing light emanating from within a monitored environment. The system comprises retro-reflective optical elements bearing a photo-luminescent material upon a surface thereof. These elements are to be positioned within the environment to be monitored. A light source is arranged to direct a beam of light at the optical element(s), and a detector is arranged to receive from the optical element(s) photo-luminescent light generated by the photo-luminescent material in response to the beam of light. The detector detects a property of the monitored environment according to the photo-luminescent response. The photo-luminescent material is arranged such that its photo-luminescent response is variable according to changes in a property of the photo-luminescent material inducible by changes in the monitored property of the monitored environment.

Abstract: Disclosed is a system and method for facilitating decision making on a watercraft (100). The system comprises one or more processors (102) configured to: acquire environmental data comprising measurements of one or more parameters of an environment in a locality of the watercraft (100); provide a plurality of digital models, each digital model modelling an effect of the environment on a respective capability of the watercraft (100), each capability of the watercraft (100) being assigned to one or more actions, each action being performable by the watercraft (100) or an entity on the watercraft (100); using the environmental data and the digital models, model an effect of the environment on the capabilities of the watercraft (100); receive a selection of an action; and, using outputs of each digital model that models a capability that is assigned to the selected action, determine a risk assessment for the selected action.

Abstract: A system for remotely sensing light from within a monitored environment containing one or more retro-reflective optical elements. The system includes an illuminator including a light source and a reflector unit comprising a deformable mirror arranged to receive light from the light source and to reflect the received light. This outputs illumination light from the illuminator for illuminating the optical element(s) within the monitored environment. A detector is arranged to receive light returned by the one or more retro-reflective optical elements in response to the illumination light. The detector determines a wavefront of the returned light and detects a property of the monitored environment according to the returned light. The reflector unit is arranged to deform the deformable mirror according to the determined wavefront such that light from the light source is reflected by the deformable mirror so deformed to output illumination light with a modified wavefront.

Abstract: A method and apparatus are provided for identifying and locating fault conditions in a network. Network performance data are derived from a network termination device perspective which enables fault detection in any part or parts of a link between the device and broadband remote access server (BRAS) including copper lines. For example, during a training phase, parameter data generated by a device is retrieved for a plurality of network termination devices in a predetermined portion of the network. The parameter data comprising values for a predetermined set of parameters indicative of data communications performance over that portion of the network. The data is analyzed and one or more models are generated. In a monitoring phase, the same parameters are retrieved from a network termination device of a selected user served by the same portion of the network to expose any significantly divergent behavior, potentially indicative of a fault condition.

Abstract: An apparatus and method are disclosed for hyperspectral imaging of a scene along an imaging path, from a viewpoint which is arranged to move relative to the scene. The method comprises acquiring hyperspectral image data of a portion of the scene from the viewpoint, along a first viewing direction relative to the viewpoint and redirecting the viewing direction from the first viewing direction to a second viewing direction relative to the viewpoint, in dependence of the relative movement, to maintain a view of said portion of the scene as the viewpoint moves along a portion of the imaging path.

Abstract: A radio frequency (RF) transmitter, comprising a Tesla transformer and an LC oscillator, said Tesla transformer comprising inner and outer conductors (10, 20), said inner conductor (20) comprising a generally tubular magnetic core (22) carrying a conductive member (22a) on its outer surface and said outer conductor (10) comprising a generally tubular magnetic core (13) carrying a conductive member (12) on its inner surface, said LC oscillator including a secondary winding module (40) comprising a generally tubular body (41) carrying a conductive coil (42) on its outer surface, said inner conductor (20), outer conductor (10) and secondary winding module (40) being arranged in a substantially concentric nested configuration such that said inner conductor (20) is located within said secondary winding module (40) and said secondary winding module (40) is located within said outer conductor (10), wherein a first portion (45) of relatively high permittivity dielectric material is provided between said conductive me

Abstract: Disclosed is a glide path indicator (2) comprising a light emitter (20) configured to emit a visible light signal that defines a glide path (14) for use by a pilot of an approaching aircraft (10), and a camera (22) configured to capture images of the approaching aircraft (10), the camera (22) being arranged such that at least part of the glide path (14) defined by the light emitter (20) is located within a field of view of the camera (22). The glide path indicator (2) may be mounted to a vehicle (4), for example, an aircraft carrier. The glide path indicator (2) may further comprise a stabilization module (26) configured to stabilize the light emitter (20) and the camera (22) so as to reduce or eliminate the effects of the vehicle's motion on the glide path (14) and the field of view of the camera (22).

Abstract: A radio frequency (RF) transmitter, comprising a Tesla transformer and an LC oscillator, said Tesla transformer comprising inner and outer conductors (10, 20), said inner conductor (20) comprising a generally tubular magnetic core (22) carrying a conductive member (22a) on its outer surface and said outer conductor (10) comprising a generally tubular magnetic core (13) carrying a conductive member (12) on its inner surface, said LC oscillator including a secondary winding module (40) comprising a generally tubular body (41) carrying a conductive coil (42) on its outer surface, said inner conductor (20), outer conductor (10) and secondary winding module (40) being arranged in a substantially concentric nested configuration such that said inner conductor (20) is located within said secondary winding module (40) and said secondary winding module (40) is located within said outer conductor (10), wherein a first portion (45) of relatively high permittivity dielectric material is provided between said conductive me

Abstract: An airframe (10) for an air vehicle comprising an outer skin layer (12) and a support layer (13) defining a fuselage of said air vehicle, wherein said outer skin layer (12) is magnetically coupled to said support layer (13).

Abstract: A display apparatus for use in displaying an image to a viewer (4), comprising an optical waveguide (8) arranged to receive image-bearing light (2) into the optical waveguide to guide the received image-bearing light therealong to an output part (5) of the optical waveguide for output therefrom. A combiner (70) is arranged adjacent to the output part of the optical waveguide for reflecting image-bearing light output by the waveguide in a direction which passes back through the optical waveguide and for allowing light (6) from an external scene to pass through the combiner in said direction through the optical waveguide to combine with the reflected image-bearing light so that the image-bearing light overlays light from the external scene for viewing by a viewer.

Abstract: An apparatus and method are provided for capturing dynamically selectable data streams from a communications network substantially at network line rates and for routing packets in selected data streams to one or more pre-assigned outputs by means of multiple selectable data processing queues.

Abstract: A vibration damping counterbalance unit for an inceptor apparatus having a wall defining a cavity; and a plurality of vibration damping masses housed within the cavity.

Abstract: A rotary-wing air vehicle comprising a main body (12) and at least two rotor devices (16a, 16b) arranged and configured to generate propulsion and thrust, in use, to lift and propel said air vehicle, said rotor devices (16a, 16b) being arranged and configured relative to said main body (12) such that the blades thereof do not cross through a central vertical axis of said main body (12) defining the centre of mass thereof, wherein said main body (12) is provided with an aperture (100) that extends therethrough to define a channel about said central vertical axis.

Abstract: An aircraft emergency control system comprises at least one sensor (104A, 104B, 104C) configured to output an electronic signal relating to detection of incapacitation of at least one aircraft crew member. A processor (108) is configured to receive and process the electronic signal to determine whether emergency action is to be taken. A control unit (114) is configured to communicate, in use, a control signal to an avionics system (116) of the aircraft (100) in relation to the emergency action if the processor determines that emergency action is to be taken.

Abstract: A glare visor (13) for reducing ambient light intensity perceived by a wearer viewing a head-up display (3) employing display light (7) including a given wavelength(s) of light. The visor includes a visor body comprising optically transparent material which is partially absorbing of light of visible optical wavelengths thereby to reduce the intensity of ambient light transmitted therethrough to the wearer. A transparent optical coating (12) is formed upon a surface of the visor body which is partially transmissive of light of visible optical wavelengths amongst which it is preferentially transmissive of light of a sub-range of wavelengths for including therein the wavelength(s) of display light. This permits a perceived enhancement of contrast between display light (7) relative to ambient light (8).

Abstract: A method and apparatus are provided for controlling a display device to generate a colour image for viewing by a user on a display, the colour image being formed by one or more colour components each of a colour selected from two or more different colours to be displayed with predetermined relative timings. Received image data define one or more colour components of a feature to be displayed as an element in the colour image. Rate data are received, e.g. from an associated tracker system, indicative of a rate of change in orientation of the display relative to a direction of gaze of an eye of the user. The received rate data are used to determine a position on the display for displaying each of the one or more colour components of the feature including determining any respective adjustment required to a determined position for the colour component according to its respective colour, the received rate data and the predetermined relative timings.