Abstract: A waveguide can include a first portion configured to confine an input beam within the structure of the waveguide, and a second portion configured to collimate the beam to be projected through a combiner, to produce an image in infinity. A method of constructing an optical system for a head-up-display can include shaping a first waveguide element such that a first portion of the waveguide is configured to confine an input beam within the structure of the waveguide, and a second portion is configured to collimate the input beam. The method can include coupling the waveguide to a combiner.

Abstract: A waveguide can include a first portion configured to confine an input beam within the structure of the waveguide, and a second portion configured to collimate the beam to be projected through a combiner, to produce an image in infinity. A method of constructing an optical system for a head-up-display can include shaping a first waveguide element such that a first portion of the waveguide is configured to confine an input beam within the structure of the waveguide, and a second portion is configured to collimate the input beam. The method can include coupling the waveguide to a combiner.

Abstract: A laser is used to emit a diverging laser flash configured to illuminate a detection zone. A pseudoimaging optical receiver system is used to detect reflections from objects in the detection zone. The receiver system includes a time-gated photodetector array that is used to record signatures in a voxel array. A voxel processing module receives the voxel array and detects a reference clutter signal within the array. Potential targets are then detected according to target signals in relation to the reference clutter signal.

Abstract: Tracer ammunition is disclosed and includes a projectile having a body; a chamber in the body having a front end and a rear end, the rear end of the chamber being open; an aperture at a rear end of the body providing an opening to the open end of the chamber; and a tracer material disposed within the chamber, wherein the tracer material is configured to combust when ignited and emit optical energy through the aperture as a result of the combustion process. The tracer material may be configured to include a rear-facing surface having a concave contour to aid in directivity of light output from the tracer material.

Abstract: A RF communication system includes a radio transmitter comprising an RF power amplifier, the RF power amplifier including an input to receive an RF signal for transmission and being configured to amplify the RF signal for transmission across a communication channel; a RF digital pre- or post-distortion configured to compensate for nonlinearity of the RF communication system by operating on the RF signal entering or exiting the amplifier.

Abstract: A laser is used to emit a diverging laser flash configured to illuminate a detection zone. A pseudoimaging optical receiver system is used to detect reflections from objects in the detection zone. The receiver system includes a time-gated photodetector array that is used to record signatures in a voxel array. A voxel processing module receives the voxel array and detects a reference clutter signal within the array. Potential targets are then detected according to target signals in relation to the reference clutter signal.

Abstract: Tracer ammunition is disclosed and includes a projectile having a body; a chamber in the body having a front end and a rear end, the rear end of the chamber being open; an aperture at a rear end of the body providing an opening to the open end of the chamber; and a tracer material disposed within the chamber, wherein the tracer material is configured to combust when ignited and emit optical energy through the aperture as a result of the combustion process. The tracer material may be configured to include a rear-facing surface having a concave contour to aid in directivity of light output from the tracer material.

Abstract: Embodiments of the invention provide a removable memory unit (RMU) that facilitates concatenation of said memory modules irrespective of their individual physical interfaces, enables encryption/decryption keys (including cryptographic ignition keys (CIKs)) to reside onboard the RMU, provides for physical separation of RED and BLACK data in cross-domain environments and implements zeroization functionality onboard the RMU. Further embodiments provide a swappable IO backplane and adapter plates for incorporation into a wide variety of platforms.

Abstract: A multifacet mirror comprises a catoptric structure configured to reflect light from a first field of view onto an image plane comprising a plurality of sensors, the catoptric structure having a surface comprising a plurality of facets separated by a plurality of catoptric regions; wherein a facet of the plurality of the facets has a second field of view that is smaller than the predetermined field of view; and wherein a catoptric region of the plurality of catoptric regions between two facets of the plurality of facets is configured to reflect light from a world point within the first field of view onto two of the sensors of the plurality of sensors.

Abstract: A multifacet mirror comprises a catoptric structure configured to reflect light from a first field of view onto an image plane comprising a plurality of sensors, the catoptric structure having a surface comprising a plurality of facets separated by a plurality of catoptric regions; wherein a facet of the plurality of the facets has a second field of view that is smaller than the predetermined field of view; and wherein a catoptric region of the plurality or catoptric regions between two facets of the plurality of facets is configured to reflect light from a world point within the first field of view onto two of the sensors of the plurality of sensors.

Abstract: The present invention provides a method for a data encryption device to perform network communications, the method comprising obtaining an indexed array of encryption keys, wherein the indexed array of encryption keys is shared with a data decryption device; obtaining a message to be encrypted; using a first random or pseudorandom number to determine an index; obtaining a first key from the array of encryption keys, wherein the first key corresponds to the index; selecting a second key from the plurality of encryption keys; encrypting the message using the first key and a second random or pseudorandom number; encrypting the index using the second key and a third random or pseudorandom number; transmitting the encrypted message and the encrypted index to the data decryption device.

Abstract: A spectral imaging system comprises a plurality of spectral units arranged in an array, each spectral unit of the plurality of spectral units comprising: a microlens having an optical axis; a spectral filter having a center wavelength and aligned with the optical axis; a fiber optic bundle, the fiber optic bundle having a curved light receiving surface and a planar light output surface, wherein the curved light receiving surface is aligned with the optical axis; and a plurality of pixel sensors configured to receive light from the planar light output surface of the fiber optic taper portion.

Abstract: A method of constructing a non-imaging beam transformer includes reducing a tailored illumination function from a predetermined light source to a source point response illumination function; calculating a plurality of transformation pairs for the predetermined light source, the transformation pairs identifying the radii of illumination of the light source at given source output angles; determining a desired lighting profile for light output at a region of interest to be illuminated by the beam transformer; determining a surface profile of a surface of the beam transformer such that for given output angles of the light source, the transformation pairs at those output angles are satisfied to correspond to the desired lighting profile; and constructing the beam transformer having the surface profile determined based on the transformation pairs. The method can include characterizing a specific angular output distribution of a light source to calculate the transformation pairs.

Abstract: A multifacet mirror comprises a catoptric structure configured to reflect light from a first field of view onto an image plane comprising a plurality of sensors, the catoptric structure having a surface comprising a plurality of facets separated by a plurality of catoptric regions; wherein a facet of the plurality of the facets has a second field of view that is smaller than the predetermined field of view; and wherein a catoptric region of the plurality of catoptric regions between two facets of the plurality of facets is configured to reflect light from a world point within the first field of view onto two of the sensors of the plurality of sensors.

Abstract: The present invention provides a method for a data encryption device to perform network communications, the method comprising obtaining an indexed array of encryption keys, wherein the indexed array of encryption keys is shared with a data decryption device; obtaining a message to be encrypted; using a first random or pseudorandom number to determine an index; obtaining a first key from the array of encryption keys, wherein the first key corresponds to the index; selecting a second key from the plurality of encryption keys; encrypting the message using the first key and a second random or pseudorandom number; encrypting the index using the second key and a third random or pseudorandom number; transmitting the encrypted message and the encrypted index to the data decryption device.

Abstract: The present invention provides a method for a data encryption device to perform network communications, the method comprising obtaining an indexed array of encryption keys, wherein the indexed array of encryption keys is shared with a data decryption device; obtaining a message to be encrypted; using a first random or pseudorandom number to determine an index; obtaining a first key from the array of encryption keys, wherein the first key corresponds to the index; selecting a second key from the plurality of encryption keys; encrypting the message using the first key and a second random or pseudorandom number; encrypting the index using the second key and a third random or pseudorandom number; transmitting the encrypted message and the encrypted index to the data decryption device.

Abstract: Self-healing electrical garments and self-healing electrical conductors and components for use in electrical garments are provided. A communication medium of various forms is integrated into a garment seam that is used to join two or more portions of a garment. The communication media can be used to provide electrical or other electromagnetic connection for coupling among a plurality of electrical devices associated with the garment. The self-healing electrical conductor may be used as part of a garment portion or may be used as a joining fiber in a variety of techniques to join garment portions together. The self-healing electrical conductor comprises an electrical conductor, a conductive polymer immediately surrounding or adjacent to the electrical conductor, an insulator enclosing the electrical conductor and the conductive polymer.