Abstract: A system and method for using coherent aggregated bandwidth over multiple transmissions for improved performance of precision guidance and positioning and of object tracking systems. Angular offset (Az/El) estimations are strongly impacted by interference between direct and (comparable amplitude) ground-reflected signals. In rough ground situations, there could be many ground reflected signals. Bandwidth aggregation as used herein achieves sharper range sidelobes and smaller magnitude multipath interference terms resulting in increasingly accurate interferometric results.

Abstract: Techniques and architecture are disclosed for inferring a unified topological model of a hidden topology comprising dispersing data packets from a source to at least one receiver, and collecting individual end-to-end packet statistics; collecting aggregate end-to-end statistical measurements between a plurality of enclaves situated at an edge of an unknown network; identifying shared path correlations relating to shared links traversed between at least one root enclave and one or more leaf enclaves; constructing topological metrics as a directed tree corresponding to shared path correlations; inferring a unified topological model and routing paths of the unknown network based on the plurality of topological metrics collected by the plurality of enclaves; validating consistency between the subsequent end-to-end statistical measurements and the unified topological model of the hidden topology; and updating the inferred unified topological model of the hidden topology in accordance with observed inconsistencies.

Abstract: A guided projectile including a precision guidance munition assembly utilizes angular rate sensors to sample a first angular velocity of the precision guidance munition assembly from the first angular rate sensor at a first time, sample a second angular velocity of the precision guidance munition assembly from the second angular rate sensor at the first time, generate a coning command based, at least in part, on the first angular velocity and the second angular velocity, and apply the coning command to the canard assembly. The range may be decreased or increased based on the coning commands.

Abstract: The dual mode INS high performance system using an IMM mixing method presented in this disclosure utilizes a MEMS-based IMU as the inertial sensor due, in part, to low cost and low power consumption. A dual filtering system, one with fifteen state EKF and the other with twenty one state EKF is mixed in real-time to address dynamic overlapping and continuous transition from a low dynamic mode to a high dynamic mode. The IMM estimation scheme is employed to compute the real-time mixing coefficients via the IMM probability mixing formulation. The present disclosure is applicable to earth to orbit platforms, spinning projectiles, and the like to successfully reconstruct the object's state estimate vector even under a high angular rate and high g operating environment.

Abstract: A battery mounting mechanism that allows for one or more battery assemblies to be mounted in various positions within a vehicle via a securely attached mounting assembly that may allow for quick and easy adjustment of the position of the battery assemblies while further preventing rotation of the battery assemblies. Further provided herein is a mechanism for connecting multiple battery assemblies into a single battery unit while still allowing these battery assemblies to take advantage of the battery mounting mechanism provided herein.

Abstract: A system for securely customizing a computing environment based on cryptographic protections includes providing a key device; bringing the key device proximate to a computing environment (510); beginning an authentication protocol when the user approaches the environment with the device; validating user to the key device (520); comparing certificates (525); unlocking/regenerating a device split key (530); if authentication of certificates is not valid, log & return (540); if it is valid, a full key is generated on the computing environment in volatile memory, and the full key unlocks personal settings on the computing environment (545). Using the computing environment with the personal settings (550); disconnecting (555); and logging activity (560). The device can be a smart phone. Bringing the key proximate to a computing environment (510) can initiate Bluetooth or other near field communications. Initial steps can include enrolling the key (505). The environment can be a vehicle.

Abstract: A laser mast for attachment to a ground vehicle includes a mast, a rotary stage, a platform, a first laser, and a second laser. The rotary stage is connected to and rotates the mast. The platform is connected to the rotary stage. The first laser is within the mast. The second laser is within the rotary stage or the platform.

Abstract: Techniques are provided for non-volatile detection of an overvoltage condition in a circuit of interest. A circuit implementing the techniques according to an embodiment includes a fuse configured to provide a non-volatile indication of an overvoltage event, the indication associated with an open state of the fuse. The circuit also includes a voltage controlled current switch coupled in series to the fuse. The voltage controlled current switch is configured to enable current flow through the fuse in response to a supply voltage exceeding a threshold value associated with the overvoltage event. The current causes the fuse to switch from a closed state to an open state providing a non-volatile record of the overvoltage event. In some embodiments, the voltage controlled current switch can be a Zener diode with a breakdown voltage based on the threshold value, or a transistor configured to switch into conducting mode at the threshold value.

Abstract: A system for a synchronous high speed shutter for sensor protection comprising a shutter disk having a rotational axis; wherein the rotational axis of the shutter disk is perpendicular to an optical axis of the sensor. A plurality of paired reflecting elements on the shutter disk, perpendicular to a surface of the shutter disk, wherein a polished surface of each of the plurality of paired reflecting elements is figured to match an angle (f #) of an incoming ray bundle; whereby incoming radiation is directed back out collecting optics; wherein the sensor comprises a single photon Geiger mode detector, and whereby the sensor is protected from damage by over-current due to a flood of photons.

Abstract: The system and method for decoupling algorithms from a Mission Data Tool suite, or the like, into a scalable, modular and multithreaded tool set callable from a variety of environments. The system generates data objects representing inputs, outputs and field validation capable of being accessed from a framework callable from Java or C#, for example. Data objects are defined in an abstract Independent Definition Language (IDL) and the objects are then generated into the target languages for use by a software component's application programming interface (API). The resulting generated code may also contain serialization/deserialization routines needed for object transfer between different systems in a seamless manner. In some cases, transfer of the objects, algorithmic generation of data into the objects, and the transfer of outputs back to the calling system is possible with minimal overhead and interaction on either end.

Abstract: The system and method for accurately determining range-to-go for the command detonation of a projectile. Using dual laser and/or radio frequency detectors on the tail and on the nose of a spinning projectile to determine the range-to-go, time-to-go, or lateral offset from the projectile to the target.

Abstract: The system and method for hyperspectral target identification provides for sue of a sensor array such that for a 2 by 2 pixel, each pixel is set to a different wavelength by employing a band pass filter, so that one can determine whether a cluster set is of a natural object or a man-made object. Using ratios of the collected energy within the partitioned sub-bands one can make near real-time declarations about targets and in some cases, friend or foe determinations.

Abstract: An RF frequency tuning-in-silicon photoconductive-switch-based high power microwave system including a cradle; a transmission line proximate the cradle; a photosensitive silicon material switch component also proximate the cradle; a laser light source having a varied illumination incidence location on the photosensitive material; and a laser alignment component providing the location of the illumination incidence location on the photosensitive material; whereby the inductance of the switch varies as a function of the incidence location of the illumination on the photosensitive material.

Abstract: A navigation path planning method includes receiving an initial position of a navigation path and a terminal position of the navigation path. The initial position represents a current position of a vehicle or other platform that is navigating to the terminal or target position. The method includes calculating the navigation path from the initial position to the terminal position as an objective function of a navigation reliability term and a navigation accuracy term. The navigation reliability term represents a probability of successfully reaching the terminal position along the navigation path, and the navigation accuracy term represents the probable distance between the terminal position and the navigation path. The calculated navigation path is provided to a navigation system to cause the platform to navigate along the calculated navigation path.

Abstract: A multiport splitter with a circuit that is less costly, smaller, impedance matched on all ports, provides 9.54 dB isolation between neighboring ports, and is balanced as compared to the current typical implementations. The present disclosure may further provide a single multiport splitter that may be increased to any suitable number of output ports without the need for cascading multiple splitters and/or couplers together in a single device.

Abstract: The system and method for combining two optical assemblies into the same volume, particularly when the field of view of the two assemblies are different, so that the overall volume and size, weight and power (SWaP) for the system is reduced. This also allows both subsystems (e.g., narrow field of view (NFOV) and wide field of view (WFOV) to use a single aperture and the same external protective window, reducing overall cost for a system of co-located dissimilar optical systems in a single aperture.

Abstract: A method and apparatus for performing shearography where the shear length and direction can be set in image processing, thus allowing all shear sizes to be computed and tested from a single data set, which can be collected in a single pass over a test surface or test object. The present process assures that a single data set can be processed with optimal shear length for multiple target types, thus reducing or eliminating the chance of missing a target detection while additionally enhancing target shape analysis by allowing the calculation of target response versus shear length and shear direction.

Abstract: The system and method of externally powered cold key load injects a voltage into a cryptographic computer without disturbing any data pins. There are several mechanical approaches that are viable, a Y cable implementation, a two cable solution, a direct connect solution, and more. The system includes the ability to provide a variable voltage power source to the cryptographic computer.

Abstract: A storage system is configured to facilitate memory operations with the memory that avoid the need for defragmentation. The system includes one or more memory devices and a memory interface operatively coupled with the one or more memory devices. The memory interface includes a start page module that provides a start page table having a page number that includes a first part of a corresponding dataset. A link page module of the memory interface provides a link page table that indicates an address for a current page of a given dataset and an address for a next page of the given dataset. Write/read page modules of the memory interface provide write/read page tables that include sub-addresses of a page where a portion of a corresponding dataset is being written/read. The memory interface executes data read, write, and erase operations that are tracked using the tables provided by the various modules.

Abstract: An integrated architecture and its associated sensors and processing software subsystems are defined and developed allowing a conventional unguided bullet to be transformed into a guided bullet without the use of an on-board inertial measurement unit (IMU). Some important SW components of the present disclosure include a target state estimator (TSE); a bullet state estimator (BSE); Multi-Object Tracking and Data Association; NTS GL; and a Data Link. Pre-conversion of two angles and range information of an OI sensor from spherical coordinates into Cartesian coordinates eliminates the Jacobian dependency in the H matrix for the BSE, thus increasing the miss distance performance accuracy of the bullet target engagement system.