Abstract: A method of manufacturing a high-power fiber laser by forming a first assembly of fiber optic components on a common first fiber; forming a second assembly of other fiber optic components on a common second fiber; forming a further fiber optic component on a third optical fiber; connecting the first fiber to the third optical fiber by a first splice to fix the first assembly of fiber optic components to the further fiber optic component; and connecting the third optical fiber to the second fiber by a second splice to fix the second assembly of fiber optic components to the further fiber optic component.

Abstract: A system and method for generating high power pulses including a photoconductive semiconductor switch (PCSS), a laser for triggering the PCSS and a bipolar pulse generator coupled to the PCSS. The bipolar pulse generator is activated when the PCSS is triggered. A bipolar pulse is generated by the activated bipolar pulse generator. A modulator unit modulates the bipolar pulse to create a modulated bipolar pulse. The modulator unit is a nonlinear transmission line (NLTL).

Abstract: A device, system and method for a wideband low noise amplifier is provided. The device may include a main amplifier and an error amplifier. In each amplifier is a phase inverter configured to invert the incoming signal. Additionally, rather than being formed from discrete components, the conductors of this wideband low noise amplifier are formed from microwave monolithic integrated circuits to provide for greater efficiency, which enables the low noise amplifier to operate in wideband rather than narrowband. A method of using the same is also provided.

Abstract: Frequency divider techniques are disclosed which can be used to address two problems: when an incorrect division occurs if the modulus control changes before the divide cycle is complete, and when an incorrect division occurs due to a boundary crossing (e.g., power-of-2 boundary crossing in a fractional-N PLL application). In one embodiment, a frequency divider is provided comprising a plurality of flip-flops operatively coupled to carry out division of an input frequency, and configured to generate a modulus output and receive a divided clock signal of a previous cell. An additional flip-flop is selectively clocked off one of the modulus output or the divided clock of the previous stage, depending at least in part on a Skip control signal applied to a data input of the additional flip-flop, and is further configured to selectively reset the plurality of flip-flops to a state that will result in a correct divide ratio.

Abstract: Methods and systems for non-stationary image sensor frame registration include receiving a data capture from an image sensor in motion, spatially filtering at least one pixel intensity value within the data capture to create a spatially filtered image, predictively differencing a filtered pixel intensity value of the spatially filtered image from a predicted intensity value, and generating a predictively differenced image based on the predictive differencing.

Abstract: This invention describes a method for operating a weapon targeting system comprising the steps of using a laser to fire a single pulse at a target to obtain a reflected laser pulse; detecting the reflected laser pulse as a signal by a SWIR focal plane; detecting background illumination by using the SWIR focal plane; scene clutter filter and using optical filtering if it is necessary to suppress background illumination.

Abstract: A method is provided for determining flow conditions for a body immersed in a fluid. The method comprises obtaining flow sensor data downstream of the leading edge stagnation point (LESP) using one or more minimal calibration flow sensors. The method further comprises obtaining at least one normalizing flow parameter value and normalizing the flow sensor data using the at least one normalizing flow parameter value. The method also comprises determining an overall flow condition for the body using the normalized flow sensor data.

Abstract: A feedback amplifier having an improved feedback network including two cross coupled switches that isolate the amplifier from extraneous undesired electrical signals present in a system or network when the amplifier is turned off (i.e., in an off-state). The cross coupled switches interconnect two feedback paths of a feedback network to enable out-of-phase differential signals to be summed and effectively canceled. Further, the feedback amplifier provides on-stage advantages to enable different amplifier characteristics and parameter to be selectively engaged by turning on or turning off certain feedback networks.

Abstract: A method for protecting analog or mixed signal ICIP uses adjustment requirements of analog circuits to provide an obfuscated mechanism for preventing unauthorized use of an analog or mixed-signal IC (“AIC”) by disabling the AIC until application of an adjustment signal that is within a narrow enabling subrange. Embodiments significantly increase the adjustment range beyond the enabling subrange, and/or omit AIC tuning outputs that are not required for operation of the IC. Embodiments include “clipping” circuits that render the AIC outputs unresponsive to tuning signals outside of the enabling subrange. Information regarding the enabling subrange and/or a separate enabling IC can be provided to authorized users, and/or enabling bits of a digital adjustment input can be permanently set by the ICIP owner after AIC manufacture. The ICIP can be further protected by a security feature that can be unique to each AIC, and/or by using a two-foundry production method.

Abstract: A microwave module is described. The microwave module includes a base bracket, a window plate and a lid. The base bracket is configured to contain a photoconductive switch, a radio-frequency transformer and dielectric oil. The window plate, which is transparent to optical light, covers a first portion of the base bracket in which the photoconductive switch is located. The window plate is sealed to the base bracket. The lid, which includes a cutout to allow the radio-frequency transformer to pass through the lid, covers a second portion of the base bracket in which the radio-frequency transformer is located. The window plate is sealed to the base bracket, and the lid is sealed to the window plate, the base bracket and the radio-frequency transformer to contain the dielectric oil within the microwave module.

Abstract: An inertial sensor system according to one embodiment having a platform with an x axis and a y axis, a rotational table that is free to rotate about the x axis, a rotational table gyroscope mounted onto the rotational table to measure p, q, and r rotation rates referenced to the rotational table and at least one platform gyroscope mounted off the rotational table, wherein the rotational table gyroscope and the platform gyroscope provide sense rotation used to process gyroscope biases that are used to correct measurements for the inertial sensing system.

Abstract: A system and method for controlling a aradio transmitter from the application layer is presented. The method includes monitoring an uplink state of a shared channel at a cell manager and processing the uplink state, at least in part, in the application layer in the cell manager to produce processed uplink state. The processed uplink state is then broadcast in a control packet on a downlink of the shared channel to a subscriber manager. The processed uplink state is then further processed, at least in part, at the application layer in the subscriber manager to produce transmitter control data. The transmitter control data is then used control the radio transmitter.

Abstract: A laser range finder (LRF) and an automated method for determining a return laser signal associated with a target thereof are disclosed. In one example embodiment, the LRF includes a laser beam emitter to emit a laser beam towards a target. Further, the LRF includes a receiver circuit to receive multiple return laser signals reflected from objects including the target and to determine an amplitude of each of the multiple return laser signals. Furthermore, the LRF includes a processor coupled to the receiver circuit to compare the amplitude of each of the multiple return laser signals with a range varying threshold that accounts for range and atmospheric losses and to determine one of the multiple return laser signals as being associated with the target based on the comparison.

Abstract: A night vision system includes an eyepiece and a video camera to capture a video image that can be remote to the eyepiece. The eyepiece includes an optical device with a front side and a back side. A splitting surface within the optical device reflects some of a video image toward an eye of a user of the eyepiece, and the splitting surface further allows some light of an optical image received from in front of the eyepiece to past through the eyepiece to the eye of the user. The layer of switchable coating on the eyepiece can be switched between a transparent mode and an opaque mode by the user. When in an opaque mode no light can leave the front side of the optical device and only the video image can be seen through the eyepiece.

Abstract: An apparatus for managing data queues is disclosed. The apparatus includes at least one sensor for collecting data, a data interface for receiving data from the sensor(s) and for placing the collected data in a set of data queues, and a priority sieve for organizing the set of data queues according to data priority of a specific task. The priority sieve includes a scoreboard for identifying queue priority and a system timer for synchronization.

Abstract: Methods, systems, and computer readable media for video image recovery from transient blockage or corruption artifacts include receiving first and second data captures from an image sensor having first and second pluralities of pixel intensity values corresponding to pixel locations of the first and second data captures. The methods, systems, and computer readable media also include identifying in the second data capture, one or more of the second pixel intensity values exceeding a contrast threshold to detect a transient blockage. The methods, systems, and computer readable media also include replacing the one or more of the second pixel intensity values exceeding the contrast threshold with one or more of the first pixel intensity values to generate a corrected data capture.

Abstract: A hybrid laser countermeasure line replaceable unit and method of upgrading therewith is provided. The unit includes two generable laser beams, namely, a first pulsed laser beam and a second continuous wave laser beam. Further embodiments may have multiple pulsed and continuous wave laser beams as necessary. The two beams in this single unit either may be generated from a single gain medium or may be generated from multiple gain mediums inside the line replaceable unit. The two beams may be combined if necessary to provide greater likelihood of success as a countermeasure to defend against optically guided incoming threats to a vehicle, such as military aircraft.

Abstract: A system for real-time or near real-time coordination of personnel and a method for creating a gridded reference graphic (GRG) for use in such a system is provided. A GRG is created by obtaining imagery of an area a team is to be operating in, wherein the imagery is obtained from overhead, taken from a position substantially orthogonal to the central portion of the area of operation. A grid, which may then be further modified with labels allowing identification of areas within the grid, is then overlaid thereon, creating a GRG. The GRG may then be served to personnel and displayed on a user device. The system includes a GRG comprising scale images of an intended area of operation, a labeled grid overlaid thereon and a scale for measurement of distances wherein the GRG are dispersed among and displayed to personnel.

Abstract: A network test system seeks to improve visibility into the real-time operation of a network system or subsystem of a spacecraft through the use of a port from each relevant network to a spacecraft test interface. The network test system includes a packet switch operatively coupled downstream from a SERDES receiver and operatively coupled upstream from a SERDES transmitter. The packet switch in conjunction with the signal replicator in the SERDES receiver taps off a data stream of the network activity so that the port allows an observation device to passively observe the network activity. The system is adapted to increase real-time observation of network activity without disturbing the network.

Abstract: A method for identifying individuals using inertial sensor based gait biometrics. A method for identifying individual persons using orientation and pace invariant gait dynamics images (GDIs). A method of biometric authentication using i-vectors for GDIs.