EXELIS INC. Patent applications |
Patent application number | Title | Published |
20160098378 | Method and System for Performing Robust Regular Gridded Data Resampling - During data resampling, bad samples are ignored or replaced with some combination of the good sample values in the neighborhood being processed. The sample replacement can be performed using a number of approaches, including serial and parallel implementations, such as branch-based implementations, matrix-based implementations, and function table-based implementations, and can use a number of modes, such as nearest neighbor, bilinear and cubic convolution. | 04-07-2016 |
20150097721 | Anti-Spoofing in a Satellite Navigation System - Embodiments are generally directed to anti-spoofing techniques for satellite navigation systems. In general, the anti-spoofing techniques use codeless or semi-codeless tracking of encrypted satellite signals to generate measurements that can be used to perform consistency checks to received non-encrypted signals. The consistency checks will detect if the non-encrypted signal is a genuine satellite signal or a spoofing signal. | 04-09-2015 |
20150008306 | SYSTEM ARCHITECTURE FOR A CONSTANT FOOTPRINT, CONSTANT GSD, CONSTANT SPATIAL RESOLUTION LINESCANNER - A line scanner scans in a cross track direction and moves forward on a platform in an along track direction. The line scanner includes a plurality of detectors forming a left array and a plurality of detectors forming a right array. The left array and the right array are tilted away from a line formed in the along track direction. The left array is configured to detect scene radiance from a surface of an object when the line scanner is scanning the surface on the right side of the line formed in the along track direction. The right array is configured to detect scene radiance from the surface of the object when the line scanner is scanning the surface to the left side of the line formed in the along track direction. The detectors in each respective array are configured to simultaneously detect the scene radiance. | 01-08-2015 |
20140307965 | BAND DEPENDENT LINEARIZATION FOR MULTIBAND REMOTELY SENSED AND AERIAL IMAGERY - A system for processing a multiband image, including digital computer memory for storing a multiband image having multiple bands of image data; and processing circuitry for processing the multiband image, wherein the processing circuitry (a) determines pixel locations in the bands of the multiband image having values above the band-specific white value threshold for each of the bands of the multiband image, (b) determines a band-specific correction factor for each of plural bands of the multiband image based on the determined pixel locations, and (c) applies the corresponding band-specific correction factor to the respective plural bands of the multiband image to produce a corrected image. | 10-16-2014 |
20140267389 | Night Vision Display Overlaid with Sensor Data - Sensor data indicative of a user's environment is received from a sensor. A video signal is generated which comprises a visual representation of the sensor data. The video signal is combined with a night vision view of the user's environment to overlay the visual representation of the sensor data over the nigh vision view of the user's environment. The overlaid night vision view of the user's environment is displayed to the user. | 09-18-2014 |
20140265829 | Method And Apparatus To Enhance Output Current Linearity In Tandem Electron Multipliers - A tandem electron multiplier device includes an input end position electron multiplier generating an electron emission; an output end position electron multiplier receiving the electron emission and generating an output electron emission; an electron collector to receive the output electron emission; a power supply; and an electrical biasing network coupled to the power supply, the electrical biasing network supplying voltages to connections at the input end position electron multiplier and the output end position electron multiplier, the voltages supplied to provide output current linearly with respect to input current across the tandem electron multiplier device. | 09-18-2014 |
20140254033 | TRANSLATIONAL OPTIC ALIGNMENT LOCKING DEVICE - An optical device includes a housing enclosure, a lens cell holder mounted to the housing enclosure by a retainer, a lens assembly mounted to the lens cell holder such that the lens assembly is configured to translate in an axial direction; and a radial space defined between the lens cell holder and the retainer that is sized to accommodate adjustment of the lens cell holder and the lens assembly in a radial direction with respect to the housing enclosure. A method of adjusting a line of sight of the optical device includes (i) positioning the lens assembly against the housing enclosure; (ii) adjusting the radial position of the lens assembly until a pre-determined line of sight requirement is achieved; and (iii) fixing the lens assembly to the housing enclosure of the optical device to preserve the radial position of the lens assembly with respect to the housing enclosure. | 09-11-2014 |
20140240561 | ADAPTIVE GAIN CONTROL IMAGE PROCESSING SYSTEM AND METHOD - By utilizing scene metrics in an image processing system (such as night vision goggles or a camera), a setpoint controller can set a setpoint used by a gain controller. Using the setpoint and an average video level of a frame, the gain controller can set gain control signals sent to an image sensor and/or a high voltage power supply to adaptively adjust for higher and lower light scenarios. Scene metrics can include an amount of saturation in a frame, a number or percentage of pixels above a first threshold and a number or percentage of pixels below a second threshold. | 08-28-2014 |
20140125870 | Image Display Utilizing Programmable and Multipurpose Processors - A display apparatus includes a programmable processor which receives sensor data and generates a first video signal. The apparatus further includes a second processor configured to run an operating system and generates a second video signal. Video mixing logic of the display apparatus is configured to combine the first video signal and the second video signal into a third video signal which is displayed to the user on a display. | 05-08-2014 |
20140125694 | Image Display Utilizing a Variable Mask to Selectively Block Image Data - A display apparatus includes a beam combiner receiving a first image projected by a source, and a second image. The beam combiner combines the first image and the second image into a third image. A variable mask is configured to mask portions of the second image from the beam combiner. A controller is configured to shape the variable mask according to the content of the first image. | 05-08-2014 |
20140117249 | Devices and Methods of Capturing Back Scattered Particles - Provided is an apparatus comprising a source which emits at least one of particles or radiation. The particles or radiation are emitted towards a target. Arranged between the source and the target is a microchannel plate. Also arranged between the source and the target is a collimator. | 05-01-2014 |
20140099908 | Ordered Electromagnetic Interference Cancellation - Progressive cancellation of electromagnetic interference (EMI) is achieved by establishing a canceller stage processing order in a receiver feed circuit. Such a processing order may be one that progressively narrows an interference analysis bandwidth around desired target signal and optimizes gain-bandwidth characteristics of a cancellation loop in each canceller stage accordingly. A cancellation signal generated by each canceller stage is adaptively controlled without disturbing the stability of the cancellation loop. By doing so, the residual interference-to-noise ratio at each adaptive canceller stage is optimized independently from the closed cancellation loop control of the other canceller stages resulting in improved interference cancellation in the receiver feed circuit. | 04-10-2014 |
20140094217 | MOBILE DEVICE TO BASE STATION REASSIGNMENT - Techniques are presented herein for load balancing of mobile devices among a plurality of bases stations. Specifically, it is determined via a processor whether to reassign a mobile device from a first base station to a second base station, wherein the second base station is one of a plurality of base stations whose operational performance may be impacted by reassigning the mobile device to the second base station. The expected performance that would result if the mobile device is assigned to the second base station is evaluated for each base station in the plurality. The mobile device is reassigned to the second base station in response to the expected performance of each of the plurality of base stations meeting operational performance requirements. | 04-03-2014 |
20140073297 | Method and System for Active Chip In a Battery - Methods and systems provide an active chip configured for connection to the battery or other component of a host mobile communication device, such as a cellular phone, to thereby add functionality to the host mobile communication device. The system may be installed and used for covert operations (i.e. military and/or law enforcement), adding features such as location tracking and voice recognition and recording to monitor the movement and use of the host mobile device covertly. The system may be used to communicate with other locally enabled systems on a local network instead of communicating through the cellular network, or operate as a radio transceiver or “push-to-talk” device such as a “walkie-talkie.” It may be used as a “kid tracker” location tracking device, to find a lost host mobile device, lost person carrying the host mobile device, or track locations where a host mobile device has been. | 03-13-2014 |
20140036984 | Equalization of a Distributed Pilot OFDM Signal - A technique for equalizing a distributed pilot OFDM signal with decision feedback involves correlating a received OFDM signal against a pilot reference to obtain a coarse channel estimate, where the received OFDM signal includes a distributed pilot signal and an OFDM data signal. The received OFDM signal is equalized based on the coarse channel estimate and the distributed pilot signal is removed to generate a coarse data signal estimate. The coarse data signal estimate is removed from the received OFDM signal using the coarse channel estimate to generate a residual pilot signal. The residual pilot signal can then be correlated against the pilot reference to obtain a fine channel estimate. The received OFDM signal is equalized based on the fine channel estimate, and the distributed pilot signal is removed to produce a fine data signal estimate from which data is recoverable. | 02-06-2014 |
20130282208 | POINT CLOUD VISUALIZATION OF ACCEPTABLE HELICOPTER LANDING ZONES BASED ON 4D LIDAR - A processor calculates a safe landing zone for an aircraft. The processor executes the following steps: (a) converting 4D point cloud data into Cartesian coordinates to form a height map of a region; (b) segmenting the height map to form boundaries of an object in the region; and (c) determining maximum height within the boundaries of the object. Also included are (d) determining if the maximum height is greater than a predetermined height to form a vertical obstruction (VO) in the region; and (e) determining if the VO is in the line of sight (LOS) of the aircraft to classify the landing zone as safe or unsafe. The processor further includes the step of: (f) forming a slope map over the height map. | 10-24-2013 |
20130258487 | LOW MASS WARPAGE FREE EYEPIECE - An eyepiece for a night vision goggle (NVG) system includes a first lens element axially aligned with second and third lens elements. The first, second and third lens elements are sequentially positioned between a viewer and an object formed on a screen surface. The first lens element is formed as a doublet having two cemented elements. The second lens element includes a convex surface facing the doublet and a concave surface facing toward the third lens element. The third lens element includes a first convex surface facing the second lens element and a second convex surface facing the object. The second lens element is formed with two even aspheric surfaces comprised of only even coefficients and is substantially uniform in thickness. | 10-03-2013 |
20130258473 | STOWABLE LENS CAP FOR OPTICAL DEVICE - A removable lens cap for an optical device includes a lens cap body having one or more walls defining an interior space on one side of the lens cap body that is configured to conceal a lens of the optical device; and provisions for removably mounting the lens cap body to the optical device that is defined on a different side of the lens cap body. | 10-03-2013 |
20130257832 | IMAGE PICKOFF APPARATUS SYSTEM AND METHOD - Image apparatus, eyewear, and imaging methods are disclosed. The image apparatus may include a waveguide substrate having a viewing region and a detecting region. The viewing region includes a plurality of parallel partially reflective surfaces. Light from a scene may be received in the viewing region of the waveguide substrate with a portion passed through the viewing region and another portion reflected toward the detecting region of the waveguide substrate. The detecting region may direct the other portion toward a detector. | 10-03-2013 |
20130257570 | ROTARY ENCODER SWITCH WITH PULL FUNCTION TACTILE FEEDBACK AND POSITIVE STOP - A rotary encoder switch assembly includes a panel having a hole that is defined at least partially through the panel, a recess that is formed along a circumference of the hole, and a bearing surface that is defined either on or adjacent the hole of the panel; a rotary encoder switch, which defines a bearing surface, that is mounted to the hole of the panel such that the encoder switch is configured to translate with respect to the panel, and rotate with respect to the panel until the bearing surface of the rotary encoder switch bears on the bearing surface of the panel; and a spring-loaded plunger that engages with the recess of the panel to provide tactile feedback to a user of the rotary encoder switch assembly when the spring-loaded plunger engages with the recess of the panel. | 10-03-2013 |
20130250105 | ALGORITHM FOR ADAPTIVE DOWNSAMPLING TO AN IRREGULAR GRID - A method of adaptive downsampling includes the steps of: (a) receiving input data having a first spatial resolution and a first grid spacing; (b) resampling the input data using an automatically adjustable kernel; and (c) providing output data having a second spatial resolution and a second grid spacing. The second spatial resolution, advantageously, is substantially constant across the second grid spacing. The input data may include image data, and the output data may include resampled, or downsampled image data. The image data may be images of the Earth at a first spatial resolution and a first grid spacing; the output data may be resampled data of the images of the Earth at a second spatial resolution and a second grid spacing. | 09-26-2013 |
20130230206 | FOLIAGE PENETRATION BASED ON 4D LIDAR DATASETS - A method for detecting terrain, through foliage, includes the steps of: receiving point cloud data in a three-dimensional (3D) space from an airborne platform, in which the point cloud data includes foliage that obscures the object; reformatting the point cloud data from the 3D space into a one-dimensional (1D) space to form a 1D signal; and decomposing the 1D signal using a wavelet transform (WT) to form a decomposed WT signal. The decomposed WT signal is reconstructed to form a low-pass filtered profile. The method classifies the low-pass filtered profile as terrain. The terrain includes a natural terrain, or a ground profile. | 09-05-2013 |
20130195227 | Removal of a Band-Limited Distributed Pilot from an OFDM Signal - A technique for removing a band-limited distributed pilot signal from an orthogonal frequency division multiplexed (OFDM) signal involves converting a received OFDM signal, which includes a distributed pilot signal and an OFDM data signal, into a frequency domain signal having populated frequency bins containing respective subcarrier signals, each including a constituent data signal of the OFDM data signal and component pilot signal of the distributed pilot signal. An average magnitude of the populated frequency bins is determined based on the absolute values of the complex components of the populated frequency bins of the frequency domain signal, and the average magnitude of the populated frequency bins is used to estimate a pilot signal magnitude. The distributed pilot signal is removed from the frequency domain signal using a stored replica of the pilot signal scaled in conjunction with the pilot signal magnitude to yield the OFDM data signal. | 08-01-2013 |
20130182748 | Method and Apparatus for Radio Synchronization Detection in a Rake Receiver - Enhanced reception in a communication system is achieved by performing radio synchronization (SYNC) detection after multipath signal components are combined via a Rake combiner. In a communication system comprising a transmitter and a receiver, plural multipath signal components of a signal transmitted by the transmitter are received by the receiver. The plural multipath signal components are correlated with a known spreading code (e.g. a PN code). The correlated multipath signals are analyzed to identify plural correlation peaks and those correlation peaks that exceed a multipath threshold are selected. The selected correlation peaks are combined (i.e., coherently combined) to produce a combined signal. A synchronization event is declared when the combined signal exceeds an adjusted synchronization threshold and the combined signal is then decoded. | 07-18-2013 |
20130107263 | REMOTE ABSORPTION SPECTROSCOPY BY CODED TRANSMISSION | 05-02-2013 |
20120118687 | ENHANCED DAMPING USING CRYOGENIC COOLING - A damping apparatus is disclosed having at least one magnet, a conducting member movable relative to the magnet, a cryogenic fluid, and a channel that confines the cryogenic fluid in contact with the conducting member. The cryogenic fluid may maintain the conducting member at cryogenic temperatures, thereby increasing a damping force provided by the conducting member to a payload. | 05-17-2012 |
20120088490 | System and Related Circuits and Methods for Detecting and Locating Cellular Telephone Use Within a Geographical Area or Facility - A system for detecting and locating illicit cellular telephone use within a facility includes an array of radio frequency (RF) receivers, each receiver being placed in a predetermined location in the facility, and a central server, the receivers being in electrical communication with the central server. The server commands a group or groups of receivers to tune to a frequency of interest and to perform detailed sample rate measurements of the RF signal level received at the receivers. The array of receivers is organized into a plurality of measurement areas covering widely separated areas of the facility or different buildings of the facility, and the plurality of receivers of a measurement area is organized into a plurality of measurement groups covering areas of approximately uniform RF propagation conditions. Each receiver scans a frequency band of interest non-synchronously and independently of the other receivers in the array. Also, each receiver is preferably a direct-conversion receiver. | 04-12-2012 |