Abstract: A scene correlation-based target system and related methods are provided. A reference image depicts a remotely-positioned object having identifiable characteristics, wherein a reference directional vector is established relative to the reference image. A target image of a general vicinity of the remotely-positioned object has an unknown directional vector, the target image having at least a portion of the identifiable characteristics. An inertial measuring unit has a scene correlation system, wherein the scene correlation system matches the portion of the identifiable characteristics of the target image with the identifiable characteristics of the reference image, wherein a slew angle between the reference image and the target image is calculated. A target image directional vector is derived from the calculated slew angle and the reference directional vector.

Abstract: In some embodiments, authentication, confidentiality, and privacy are enhanced for a wireless network of cognitive radios by encryption of network management and control messages as well as data traffic, thereby protecting information pertaining to node identification, node location, node-sensed incumbent transmissions, CRN frequency channel selections, and such like. During initial network registration, a temporary ID can be issued to a node, and then replaced once encrypted communication has been established. This prevents association of initial, clear-text messages with later encrypted transmissions. Elliptic curve cryptography can be used for mutual authentication between subscribers and the base station. ECC-based implicit digital certificates can be embedded in co-existence beacons used by CRN nodes to coordinate use of frequency channels, thereby preventing denial of service attacks due to transmitting of falsified beacons.

Abstract: A rigid adaptor ring for coefficient of thermal expansion (CTE) mismatched optical device components is disclosed. In one embodiment, either side of the rigid adaptor ring includes one or more mounting pads that are configured to interface between the CTE mismatched optical device components.

Abstract: A device and the process for creating a three-dimensional electronic photonic circuit is disclosed. The process includes fabricating a standard high performance integrated circuit on a high resistivity silicon or a silicon-on-insulator substrate up to and including the passivation layer on top of transistors. Separately, a silicon-on-insulator wafer capped by an oxide layer is fabricated, then the two wafers are joined. The resultant device has photonic process elements (e.g. waveguides and photodetectors) fabricated in the top silicon layer. Continued processing interconnects the transistors and photonic elements with contacts and metallization levels to produces an electronic-photonic integrated circuit.

Abstract: A flash memory process and device for encrypting and storing data in a non-volatile flash memory associated with a host system. The device includes a flash memory, an encryption engine, a key store, a SRAM to interface with the host system, and associated control circuitry. When powered on, the device first determines if a valid encryption key is held in the key store. If a valid key is held in the store, a program flag is set when encrypted data in the flash memory is ready to be decrypted by the engine and Random stored in the SRAM for use by the host system, or when data originating from the host system and stored in the SRAM is ready to be encrypted by the engine and programmed into the flash memory. The device can be embedded in any host system wherein data must be encrypted while at rest in a memory.

Abstract: Techniques are disclosed for managing the timing between two asynchronous clocks. The techniques are particularly well-suited for synchronizing the reference clock with the divided clock in a phase coherent DSM PLL application, but can be more broadly applied to any application that includes a need for synchronizing a data bus across a clock boundary. In one example embodiment, the techniques are implemented in a retime word circuit operatively coupled between a DSM and the divide-by-N integer divider of a PLL application. The retime word circuit receives the divide word from the DSM and generates a retimed divide word that can be applied to the divider. The retime word circuit maintains the reference clock frequency throughput, and forces the divide word seen by the divider to change only at end of a given divide cycle.

Abstract: An amplifier for amplifying signals is presented. A cascode power amplifies includes two or more adjacent cascode amplifiers and at least one remote cascode amplifier. The adjacent cascode amplifiers are lined up adjacent each other with inputs of the adjacent cascode amplifiers connected to a common input line and outputs of the of adjacent cascode amplifiers connected to a common output line. The adjacent cascode amplifiers generally operate in parallel. The remote cascode amplifier is spaced apart from the adjacent cascade amplifiers. An input transmission line connects an input of the remote cascode amplifier to the common input line. An output transmission line connects an output of the remote cascode amplifier to the common output line. Amplified outputs of the adjacent cascode amplifiers and amplified outputs of the remote cascode amplifier are power combined and summed into a coherent amplified output signal that is output on the output transmission line.

Abstract: Techniques and architecture are disclosed for providing a laser system. In one specific example embodiment, the system includes a thulium-doped fiber laser coupled by silica glass fiber to a remote optical converter (ROC) including a Ho:YAG laser and, optionally, an optical parametric oscillator (OPO) utilizing in germanium phosphide (ZnGeP2; ZGP) or orientation-patterned gallium arsenide (OPGaAs). The fiber laser may emit a low-peak-power, continuous wave pump signal that pumps the Ho:YAG laser, which in turn emits a higher-peak-power, pulsed signal. When included, the OPO can be used to convert the resultant, pulsed signal to a longer wavelength (e.g., about 2-5 ?m, or greater). In some cases, distributed architecture and reduced weight/bulk may be realized while eliminating the need to actively cool the ROC for operation, for example, over a broad temperature range (e.g., ?55-125° C.). Also, methods of preparing high-peak-power, pulsed signals using such systems are disclosed.

Abstract: A single aperture three channel optical system is disclosed. In one embodiment, the optical system includes a front optical group and a back optical group that is disposed in substantially close proximity to the front optical group. Further, the optical system includes a first sensor, a second sensor, and a third sensor. The front optical group and the second optical group receives an object beam and splits into a reflected beam having first wavelengths and a transmitted beam of second wavelengths. Furthermore, the front optical group and the second optical group splits the reflected beam having first wavelengths into a transmitted beam having third wavelengths and a reflected beam having fourth wavelengths. The first sensor, the second sensor and the third sensor receive the transmitted beam of second wavelengths, transmitted beam of third wavelengths, and reflected beam of fourth wavelengths, respectively and produce the coaxial three channel images.

Abstract: A specific emitter identification (SEI) method and apparatus is capable of identifying and tracking objects within a geographical area of interest wherein the system and method has not been preprogrammed to look for particular signals. The system and method receives all of the emitted electromagnetic signals emitted from area of interest. The system and method next performs high order statistical analysis on the received signals and determines which signals emanate from possible targets of interest and which likely emanate from background clutter/noise by comparing the relative degrees of Gaussianness of the signals (for example using entropy measurements). The least Gaussian signals are deemed to likely be signals from potential targets of interest while those which are more Gaussian are deemed to be likely from background clutter or noise.

Abstract: A fibrin-based hemostatic agent suitable for both civilian and military use is disclosed. The hemostatic agent comprises (i) nanoparticles to which a plurality of Knob-A recognition sequences are attached, and (ii) coiled-coils of recombinantly-produced human fibrinogen ? and chains and the ? chain globular domain. A delivery system for the hemostatic agent also is disclosed, which additionally comprises means for delivering (i) and (ii) to a wound site. The delivery means may be a CO2 canister or a shaker jet.

Abstract: An airborne hyperspectral scanning system with a reflective telecentric relay including a system housing fore-optics, mounted in the housing, an imaging spectrometer mounted in the housing, the imaging spectrometer comprising a spectrometer slit, the spectrometer slit having an exit side and an entrance side, a focal plane array, a fold mirror, and at least three spectrometer mirrors, ordered sequentially, and in optical alignment with each other, and a reflective telecentric relay, mounted in the housing between the fore-optics and the imaging spectrometer, the reflective telecentric relay comprising a collimator module, a scanning mirror module, and an objective module, the objective module being situated to receive intermediate image from the fore-optics and reflect a collimated beam to the scanning mirror image between the collimator module and the objective module, wherein the objective module is situated to form a telecentric image at the entrance of the spectrometer slit.

Abstract: A low RCS array panel employs a number of linkable support segments. Each support segment has several junctions spaced along it, and the support segments are designed to connect with each other at the junctions to create a support grid. The segments can connect orthogonally, and the junctions can be spaced according to the frequency performance requirements for the antenna the array panel is designed to support.

Abstract: A method for extending dynamic range of a display that can attenuate brightness to match scene brightness is disclosed. Standard RGB sub pixel filtering as well as neutral density sub pixel filtering is performed. The color addressability of the display is utilized to extend the dynamic range of the emitted energy by more than one order of magnitude with the standard RGB sub pixel filtering. The standard filtering extends the dynamic range of the emitted energy by more than one order of magnitude, while the neutral density filtering extends the dynamic range of the emitted energy by two or more orders of magnitude.

Abstract: A phase coherent fractional-N phase-locked loop synthesizer for maintaining phase coherence of a synthesized frequency includes a phase coherent delta-sigma modulator (DSM) having a plurality of feed-forward accumulator stages. The DSM is operatively coupled to a reference clock configured to generate a cyclical reference signal. The DSM configured to count a number of cycles of the reference signal, to cause, at each cycle of the reference signal, each of the stages of the DSM to accumulate a sum of a previous stage of the DSM, and to multiply each sum by a fractional divide word to produce a multiplier output, thereby causing the DSM to output a sequence of signals that tracks with the reference clock.

Abstract: A system and method for building an electronic system with line-replaceable units (LRUs) is presented. The system includes a first LRU electronic module with a first connector on a side of the first LRU electronic module and a second LRU electronic module with a second connector on a side of the second LRU electronic module. To build the electronic system, the first connector on the first LRU electronic module is connected to the connector on the second LRU electronic module to form a first LRU electronic module and a second LRU electronic module combination with the first connector and the second connector interior to the module combination formed by the first LRU electronic module and the second LRU electronic module. The first connector and the second connector cannot be seen from outside the module combination formed by the first LRU electronic module and the second LRU electronic module.

Abstract: Techniques are disclosed for improving pump absorption and efficiency for fiber lasers and amplifiers, for instance. In some embodiments, the techniques are implemented by applying a partially reflective coating on a fiber end-face to double-pass any unabsorbed or otherwise excess pump light in the cladding of a fiber. While being reflective to pump wavelengths, the coating can be non-reflective at the lasing wavelength, so as to avoid unwanted feedback into the system. The benefits of this approach include that excess pump power can be effectively utilized to add more power to the laser output. In addition, the double-pass technique allows for the use of a shorter fiber length, which in turn allows for more compact system designs, saves on material costs, and facilitates manufacturability.

Abstract: Disclosed is a system and method for using a portable near (infrared light emitting diode) IR LED light source and photogrammetry for boresight harmonization of aircraft and ground vehicle components. In one embodiment, orientation and positional parameters of two or more fixed points and distances between the two or more fixed points are measured using the portable near IR LED light source with a photogrammetric system. The two or more fixed points are reference points within the aircraft or the land vehicle. Further, the measured orientation and positional parameters of the two or more fixed points and the distances between the two or more fixed points on the aircraft or the land vehicle are compared with specified design parameters of the component in the aircraft or the land vehicle. Furthermore, the component in the aircraft or the land vehicle is harmonized based on an outcome of the comparison.

Abstract: A method for polishing photonic chips is described. A gauge is placed in a photonic chip adjacent to an edge to be polished. The gauge includes a set of bars of various lengths. The bar lengths can be progressively ordered from shortest to longest or vice versa. The photonic chip is then secured in a chip polishing jig to get ready for polishing. When the photonic chip is being polished, an operator can visually inspect the gauge by looking at the polishing edge to estimate a polishing depth in order to determine a stopping point for polishing. Once the stopping point has been reached, the polishing of the photonic chip can be stopped.

Abstract: An electrical connector assembly adapted for military use comprising a high density maintenance connector which supports high bandwidth video export and low level maintenance functions, a lower density I/O connector, the stacking feature allows multiple branches in distribution center, custom to each user, and the programmability allows for identical cables/stacking connectors to be used in different configurations.