Abstract: A level shifting circuit, the circuit comprising a VL input; an I/O VL; a VCC input; an I/O VCC; a first pull-up resistor disposed between the VL input and I/O VL; a second pull-up resistor disposed between the VCC input and I/O VCC; a first pull-up assist circuit comprising a first pull-up assist p-channel MOSFET having a source/body, drain, and gate, the source/body and drain being connected to VL and I/O VL; a second pull-up assist circuit comprising a second pull-up assist p-channel MOSFET having a source/body, drain, and gate, the source/body and drain being connected to VCC and I/O VCC, respectively; a pass-gate n-channel MOSFET in operative communication with I/O VL, I/O VCC, and VL, the pass-gate being configured to reduce the voltage level of a signal driven from I/O VCC to the voltage level of I/O VL; and a one-shot circuit configured to detect a I/O VL or I/O VCC transition from a low state to a high state, to produce a pulse in response thereto, and to communicate that pulse to the gates of the fi

Abstract: A wing deployment initiator initiates penetration of frangible cover seals by missile guidance wings during wing deployment. The initiator includes a central, rotatable hub extending above a baseplate. Lobes extending from the hub prevent rotation of associated flippers by torsion springs. Locking and deployment tabs extend from the flippers into corresponding notches in proximal ends of the wings. The locking tabs prevent deployment of the wings until the central hub is rotated, whereupon the flippers are released, causing the deployment tabs to transfer deployment energy from the torsion springs to the wings. The hub can be rotated by an electrical actuator such as a solenoid or motor, or the lobes can be rotationally offset so that feedback pressure from the flippers applies a torque to the hub, and missile electronics can cause a wing control surface to inhibit and then enable hub rotation via a rocker link.

Abstract: A system for automatic prediction and generation of a Q-Code based on a text description provided in a NOTAM is provided. The present system may be utilized at a top level to generate a Q-Code from a text description or at a mid-level in the flight planning process to verify and/or confirm a human-generated Q-Code based on the text description in a NOTAM. Further, the present disclosure may allow for higher accuracy in the generation of Q-Codes thereby reducing the number of incorrect suboptimal and/or rejected flight plans produced by automatic flight planning systems.

Abstract: A slot antenna includes a substrate having a first side and a second side, a first conductive layer on the first side of the substrate, and a second conductive layer on the second side of the substrate. A first aperture is in the first conductive layer, a second aperture is in the first conductive layer, a first slotline is in the first conductive layer and in communication with the first aperture, and a second slotline is in the first conductive layer and in communication with the second aperture. A third aperture can be in the second conductive layer. A plurality of vias can be in the substrate and surrounding at least a portion of a region including the first aperture, the second aperture, the first slotline, and the second slotline, each of the vias extending through the substrate from the first conductive layer to the second conductive layer.

Abstract: The system and method for super resolution processing at long standoff distances in real-time. The system collects a series of image frames and estimated the sift, rotation, and zoom parameters between each of the image frames. A matrix is generated and then an inversion is applied to the matrix to produce a super resolution image of an area of interest while mitigating the effect of any “bad” pixels on image quality. In some cases, the area of interest in user-defined and in some cases image chips are provided by tracking software. A fast steering mirror can be used to steer and/or dither the focal plane array.

Abstract: Techniques are provided for image-based estimation of the orientation of an airborne platform. A methodology implementing the techniques according to an embodiment includes rotating an image, provided by a camera on the platform, by a selected rotation angle. The method also includes computing an intensity gradient image based on the rotated image. The method further includes extracting a left quarter segment and a right quarter segment of the intensity gradient image. The method further includes flipping one of the extracted segments about a vertical axis through that segment and comparing the non-flipped segment to the flipped segment to generate a matching score. The comparison may be based on a correlation between the flipped segment and the non-flipped segment. The process may be repeated for additional rotation angles and the rotation angle associated with the highest matching score is selected as the estimated orientation angle of the platform.

Abstract: A multi-axis rotary actuator includes a payload support configured to be rotatable about a first axis, a disk surrounding at least a portion of the payload support, and an elevation wheel rotatably coupled to the payload support. The disk is configured to be rotatable about the first axis. The elevation wheel is configured to be in contact with the disk and to be rotatable about a second axis perpendicular to the first axis. The actuator can include a mirror or other device coupled to the elevation wheel. The mirror or other device is configured to be rotatable about the first axis and the second axis as the payload support and the elevation wheel rotate about the first axis and the second axis, respectively.

Abstract: A method of detecting abnormal or malicious activity in a point-to-point or packet-switched data communication network includes tapping a link in the network to obtain a data stream transmitted from a node of the network in parallel with transmission of the data stream through the network. The tap is non-invasive because it does not interfere with the normal traversal of the data stream across the network. This is useful for certain applications, such as mission-critical systems, where it is desirable to monitor the network and inspect the data without adversely impacting or otherwise interfering with the normal operation of the system. The method further includes decoding a communication protocol encoded in the data stream to obtain payload data from the data stream, analyzing the payload data to detect abnormal or malicious activity, and notifying a host of the network of the detected abnormal or malicious activity in the payload data.

Abstract: A heat dissipation structure is disclosed that is especially well-suited for use on aerodynamic systems. The heat dissipation structure is formed within a metallic body that surrounds the heat-generating electronics. The heat dissipation structure is designed to both dissipate the generated heat and also to isolate RF cross-talk between the one or more transmitters and receivers. The heat dissipation structure includes a plurality of ring structures that extend around at least a portion of a body that houses the one or more heat-generating electrical components. The plurality of ring structures may be recessed into the body, and a first spacing between a first adjacent pair of ring structures of the plurality of ring structures is different from a second spacing between a second adjacent pair of ring structures of the plurality of ring structures.

Abstract: The system and method of improving the analysis of and implementation of a combat identification (CID) server system including providing correlation reports. There are at least two forms of correlation report, namely incident report and a summation report. The summation report has two types of totals, a summary total of all interrogations, and a breakdown of totals based on the Source JU. In one example, a correlated incident would be the combination of a Lock On or Mark Point with a Weapon Release, Disengage, or Attack.

Abstract: A system for transmitting optical communications includes a transmitter, a receiver, and a processor. The transmitter includes a light source driven by a driver circuit under control of a micro-controller to transmit an optical signal. The optical signal can be encoded by a frequency-modulated encoding scheme. The receiver includes an optical lens, an imaging sensor configured to receive the optical signal and a memory. The processor is configured to extract one or more frequencies from the optical signal for only those pixels that are changing and thus decreases an overall data rate for the system and allows for larger pixel arrays, thereby decreasing the accuracy requirements of any pointing hardware and to reconstruct a waveform for each of the extracted frequencies.

Abstract: Techniques are provided for fabricating a low profile antenna that operates with increased efficiency. An antenna implementing the techniques according to an embodiment includes a first arm comprising a first spiral portion and a first rectilinear portion, and a second arm comprising a second spiral portion and a second rectilinear portion. The second spiral portion is concentric with the first spiral portion. The antenna further includes an insulator to separate the arms. The insulator and the arms are planar surfaces disposed within a rectangular region. The first rectilinear portion is adjacent to a first and second side of the perimeter of the rectangular region, and the second rectilinear portion is adjacent to a third and fourth side of the perimeter of the region. The antenna is fabricated as a printed circuit board which is mounted on the fuselage of an aircraft, which serves as a ground plane for the antenna.

Abstract: An emitter ID ambiguity reduction system includes a Mission Data File Ambiguity Resolution matrix that contains both a) the INTEL-based emitter parameters data necessary to break emitter-by-emitter ambiguities, and b) the action(s) the Electronic Warfare (EW) system is to take to collect that data. Control software is triggered via either external command or per Mission Data File information (such as that contained in the Ambiguity Resolution Matrix). The emitter ID ambiguity reduction system includes Data collection hardware and firmware and Data Analysis OFP software algorithm(s).

Abstract: The system and method of weapon on-board range and velocity tracking using a synchronized clock and a pulse beacon on a fire control system, or the like, coupled with an on-board rear-facing detector and processor. A round or a UAS may use this system to accurately estimate range with respect to the fire control system, over time, and the round's or UAS's velocity at various times along its flight path. The system provides for smaller miss distances, and the like.

Abstract: A system and method for a bistatic coherent LIDAR system with lasers locked to a reference. Utilizing atomic absorption lines to lock the frequency for the bistatic system provides an absolute reference, as each of the lasers in the bistatic system would have the same frequency to within the linewidth of the frequency reference. Each laser may also be additionally locked to an optical cavity for increased frequency stability. Not only does such a system provide essentially an infinite aperture, it also reduces laser power requirements because the detector platforms could be much closer to the target than the platform that contains the laser.

Abstract: A method for automatically correlating radio wave pulses includes deterring a first normalized phase shift that corresponds to a first radio wave pulse. The method further includes determining a second normalized phase shift that corresponds to a second radio wave pulse. The method further includes determining the first normalized first normalized phase shift is equal to the second normalized phase shift. The method further includes in response to determining the first normalized phase shift is equal to the second normalized phase shift, correlating the first radio wave pulse and the second radio wave pulse as originating from a same radio wave transmitter. The method further includes transmitting a signal indicative of the first radio wave pulse and the second radio wave pulse as originating from the same radio wave transmitter through a circuit.

Abstract: A guidance system for a projectile having a mid-body. The guidance system having a mid-body semi-active laser seeker. The seeker has an objective lens assembly and a sensor array that reads laser energy and transmits data to determine the direction of the laser energy. A glint management unit is connected to mid-body in such a manner that glint laser energy is prevented from passing to the objective lens assembly and sensor array so as to enhance determination of the location of the target.

Abstract: Techniques are provided for phase coherent frequency synthesis. An embodiment includes a first phase accumulator to accumulate a frequency control word (FCW) at a clocked rate to produce a first digital phase signal representing phase data corresponding to phase points on a first sinusoidal waveform. The embodiment also includes a second phase accumulator to produce an incrementing reference count at the clocked rate and multiply it by the FCW to produce a second digital phase signal representing phase data corresponding to phase points on a second sinusoidal waveform. The multiplication is performed in response to change in the FCW. The embodiment further includes a multiplexer to select between the first and second digital phase signals based on completion of the multiplication. The embodiment also includes a phase-to-amplitude converter to generate digital amplitude data corresponding to the phase points on a sinusoidal waveform associated with the selected digital phase signal.

Abstract: An approach for transmitting and receiving Link 16 messages for long ranges and includes a Link 16 terrestrial transmitter, a Link 16 satellite receiver including an antenna, and a controller. The approach aligns the antenna to the Link 16 terrestrial transmitter to determine a minimum distance to an area of interest of the Link 16 terrestrial transmitter, thereby estimating a range of a link from the Link 16 terrestrial transmitter to the Link 16 satellite receiver. From the range, calculating the message propagation time. Providing a second, shifted, time slot at the Link 16 satellite, shifted by the message propagation time. Processing the signal from the Link 16 terrestrial transmitter in the second, shifted, time slot to produce a message from the Link 16 terrestrial transmitter, and presenting the message to a host.

Abstract: A method of operating switched capacitor filter integration circuits by pre-charging a final filter capacitor thereof with the final full voltage gain value during a first subframe to obtain an enhanced signal to noise ratio without changes to the circuit or components thereof.