Abstract: A geolocation system and method uses a single platform for determining a Doppler measurement set of a targeted aircraft or signal of interest. The electronic warfare aircraft and the ejected aircraft expendables technology device determine the Doppler measurement set of the targeted aircraft or other signal of interest. The ejected aircraft expendables technology device is initially tuned to an expected frequency of the target of interest. Re-tuning may take place after an initial signal reading and computation has been performed by the electronic warfare aircraft.

Abstract: Compact scanning techniques that can scan a large degree optical solid angle are disclosed. One particular embodiment is a processor controlled scanner that is capable of a large degree optical solid scan angle. Dual axis scan capability can be provided with a single compact package. A pivoting ball joint on which a mirror assembly is attached is employed. The mirror assembly is operatively coupled to an actuator assembly (e.g., electro-magnets or piezoelectric based actuators). When control voltage is applied to the actuator assembly, the ball joint to moves thereby moving the integrally attached mirror assembly.

Abstract: A safe, reliable and rapid system for the detection of nuclear materials within containers includes the use of pulsed high-intensity gamma rays that can penetrate a container and its contents and can be detected outside the container to provide a display in which high-Z material, including lead, uranium, plutonium and other nuclear substances that absorb gamma rays are detected as black regions on the display. In one embodiment, orthogonal pulsed gamma ray beams illuminate the container from two different directions to provide three-dimensional slices from which the existence and location of nuclear threat materials can be ascertained in as little as four seconds for a 40-foot container.

Abstract: An optical attenuator is included within an aircraft decoy driver system for driving a fiber optic towed decoy system to compensate for variability in the fiber optic connection to the towed decoy system. The attenuator is controlled by a control signal from the towed decoy system and adjusts the link gain based on this feedback control signal to compensate for link loss, which is highly variable and may include losses as a function of cable, connectors and splices, and to maintain a relatively constant gain. To ensure the broadest range of performance, a higher power laser can be used to drive an external Mach Zhender Modulator or an erbium doped fiber amplifier (EDFA) prior to the optical attenuator. The result is a fiber optic towed decoy system that is adaptable to various platforms and design configurations without degradation in performance of the towed decoy system.

Abstract: Techniques for multiple access differential M-ary coding applications that can be optionally aided by multiuser detection (MUD) are disclosed. An initial hopped feature decoding is performed to provide data estimates for each user represented in a received co-channel signal. Interference cancellation can then be performed using MUD, thereby providing an interference-cancelled signal. Data estimates remaining are then re-decoded. Iteration on the interference cancellation and re-decoding can be carried out to satisfy a particular rule of iteration, although iteration is not always necessary. The final decoded signal can then be provided to its destination.

Abstract: A QWIP structure is disclosed that includes a graded emitter barrier and can further be configured with a blocked superlattice miniband. The graded emitter barrier effectively operates to launch dark electrons into the active quantum well region, thereby improving responsivity. A graded collector barrier may also be included for reverse bias applications. The configuration operates to eliminate or otherwise reduce image artifacts or persistence associated with dielectric relaxation effect in low-background applications.

Abstract: Conductor segments are positioned within a two conductor transmission line in order to generate microwave pulses. The conductor segments are switchably coupled to one or the other of the transmission lines in parallel. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments into the transmission lines. The induced waves travel uninterrupted along the transmission lines in a desired direction.

Abstract: Honey pots are used to attract computer attacks to a virtual operating system that is a virtual instantiation of a typical deployed operational system. Honey nets are a collection of these virtual systems assembled to create a virtual network. The subject system uses a forward deployed honey net combined with a parallel monitoring system collecting data into and from the honey net, leveraging the controlled environment to identify malicious behavior and new attacks. This honey net/monitoring pair is placed ahead of the real deployed operational network and the data it uncovers is used to reconfigure network protective devices in real time to prevent zero-day based attacks from entering the real network.

Abstract: A method for early detection of faulty antenna arrays comprising the step of treating said detection as a special case of target recognition; wherein targets of interest are all previous examples of defective antenna arrays.

Abstract: Apparatus and a method utilizing correlation interferometer direction finding for determining the azimuth and elevation to an aircraft at long range and flying at low altitudes above water with a transmitting radar while resolving multipath signals. The signals from the radar are received both directly and reflected from the surface of the water using horizontally polarized and vertically polarized antenna arrays, are digitized and are stored in separate covariant matrices. Eigenvalues for the eigenvectors of the matrices processed on signal samples recorded on horizontally polarized X arrays are compared to the eigenvalues for the eigenvectors of the covariance matrices processed on signal samples recorded on vertically polarized X arrays. Incident field polarization is associated with the antenna array measurements that yield the strongest eigenvalue. The eigenvector and eigenvalues for the strongest signal are selected and used for subsequent signal processing.

Abstract: A nested cavity embedded loop mode antenna is provided with an ultra wide band response by nesting individual embedded cavity meander line loaded antenna modules, with the meander lines coupled to a ground plane plate either capacitively or directly so as to provide as much as a 27:1 ratio of high frequency to low frequency cutoff. The nested meander line structure is exceptionally compact and eliminates the problem of a null in the antenna radiation pattern perpendicular to the face of the antenna, thus to provide a loop type antenna pattern at all frequencies across which the antenna is to be operated. The use of the nested meander line configuration provides a flush mount for the antenna having a footprint associated with the larger of the meander line cavities and thus the lowest frequency of operation, the nesting precluding the necessity of providing separate side-by-side meander line loaded antennas which would increase the real estate required.

Abstract: A level shifter is disclosed. The level shifter includes a level shifter core circuit and a pull-up control logic circuit. In response to an input signal and an output signal of the level shifter core circuit, the pull-up control logic circuit selectively turns on a transistor within the level shifter core circuit to prevent the occurrence of a strong P-N fight state within the level shifter.

Abstract: A plurality of multi-tone CW radars are used to generate a swath of ranges to a moving object or individual behind a wall or building structure in which the overlap of the range swaths from spaced-apart radars determines the location of the moving object or individual. A histogram of the swath overlaps is used to generate a display of the path of the moving object or individual.

Abstract: A navigation signal generator on a framework that provides a standardized object-oriented means for developing and managing signal processing functions. The framework provides the ability to dynamically reallocate functions allowing numerous communications, signals intelligence, and information warfare missions that may be required under a single platform and co-exist with other frameworks. In one embodiment the system is a software defined navigation augmentation using the software defined radio architecture.

Abstract: A system is presented that provides real-time performance for iterative multi-user detectors, such as Turbo MUDs, which are used to separate simultaneous transmissions on the same frequency, by permitting the MUD to use a less computationally intense, fast-processing algorithm and to correct for errors caused by the fast processing. In order to reduce the errors, a voting system is coupled to the output of the multi-user detector within the iterative system. The voting system provides confidence values on a bit-by-bit basis for the estimates made by the multi-user detector, with the confidence values then being utilized as soft inputs to a bank of conventional single-user decoders.

Abstract: A method for identifying hostile missile launch locations is disclosed. In response to a receipt of a message containing information regarding a hostile missile had been launched at an aircraft, a determination is made as to whether or not a tail number contained within the message is a valid tail number for the aircraft. If the tail number contained within the message is a valid tail number for the aircraft, another determination is made as to whether or not the aircraft was at a valid location at the time the message was sent. If the aircraft was at a valid location at the time said message was sent, pertinent information are retrieved from the message in order to identify the exact launch location of the hostile missile.

Abstract: Apparatus which is capable of providing efficient cooling of rack mounted electronic modules while accommodating relatively large tolerances in the mounting of the modules. A plurality of thermally conductive sliding wedge blocks are interposed between the lower surface of each module and the upper surface of the cold plate base of the rack. The mechanism for clamping a module to the rack also pulls the wedge blocks together to fill in the gap between the lower surface of the module and the upper surface of the cold plate so as to provide a complete thermal path therebetween.

Abstract: Chalcogenide technology is used for radiation hardening for spaceborne systems and more particularly in C-RAM form for processors, field programmable gate arrays, startup RAMs, shadow storage and single-chip systems to protect these units.

Abstract: An apparatus for 3-axis aerodynamic control of multi-caliber bodies comprising three shafts each having at least one canard; bevel gears attached to said shafts; and a set of three miniature stepper motors, each driving a zero backlash spur assembly attached to the drive bevel gears.

Abstract: Sensors that include SAW devices, related methods, and related devices. Many embodiments are included. Some of the present sensors include an inlet structure; a mounting structure that is spaced apart from the inlet structure, the mounting structure having a top surface and an opposing bottom surface; and surface acoustic wave (SAW) devices disposed on the top surface of the mounting structure; where (a) the mounting structure includes openings that extend from the top surface to the bottom surface through which fluid can flow that has first passed over the SAW devices during operation of the sensor, or (b) the mounting structure and SAW devices together define openings through which fluid can flow that has first passed over the SAW devices during operation of the sensor.