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L-3 Communications Corporation Patents
Assignee:
L-3 Communications Corporation
Address:
New York, NY
No. of patents:
169
Patents:


1 2 3 4


Patent Number Title Of Patent Date Issued
D572266 Electronic device to be worn on the arm July 1, 2008
D563402 Handheld electronic communications device March 4, 2008
D563401 Handheld electronic communications device March 4, 2008
D504428 Visor for image display system April 26, 2005
7459916 Electromagnetic shielding defect monitoring system and method for using the same December 2, 2008
An embodiment disclosed herein is directed to an electromagnetic shielding defect monitoring system that includes a transmit system adapted to transmit a first electromagnetic field toward a first surface of an electromagnetically shielded enclosure, thereby generating a first curren
7459686 Systems and methods for integrating focal plane arrays December 2, 2008
Systems and methods for providing multi-spectral image capability using an integrated multi-band focal plane array that, in one example, may be employed to simultaneously image in the visible spectrum and infrared spectrum using an integrated dual-band focal plane array, e.g., by inc
7446675 Solid state avionics display instrument November 4, 2008
A solid-state electronic avionics display instrument includes a needle-like display mounted within a housing in a manner that emulates the manner in which prior electro-mechanical needle indicator mechanisms have been mounted in such housings so as to indicate a value along an arcuat
7436878 Method and apparatus for efficient carrier bin search for a composite spreading code October 14, 2008
A matched filter decorrelator is described for efficiently performing a carrier frequency search while despreading a P/N long code constructed from two or more constituent codes such as codes A, B, C. The received signal is phase rotated into a frequency bin and partially despread, p
7426220 Method and apparatus for aligning the clock signals of transceivers in a multiple access communi September 16, 2008
A multi-sectored, multiple access communication system provides for low-skew sector transceiver clocks by novelly utilizing a multi-tap digital Phase-Locked Loop (PLL) in the delay match circuitry of each transceiver to efficiently and inexpensively generate clock signals for each tr
7415354 System and method for GPS acquisition using advanced tight coupling August 19, 2008
A system and method for GPS acquisition in relatively high interference is described. Acquisition is aided by an Advanced Tightly Coupled (ATC) tracking filters that compute a satellite range residuals and range rate residuals for satellites being acquired. Multiple channels are used in
7403583 System and method for predictive synchronization for locating interleaving frames and demodulati July 22, 2008
A system and method for using Psuedo-Noise (PN) phase to determine frame start of a data frame is provided. The system and method includes at least two PN component codes, wherein the at least two PN component codes are relatively prime. A received PN composite encoded signal is corr
7392032 Modular ASIC with crosspoint switch June 24, 2008
Provided is a digital signal processing device, specifically a modular application specific integrated circuit ("ASIC"), having a programmable crosspoint switch for facilitating data transfer and processing within the circuit. A programmable matrix element is operable to perform adva
7375680 Ionosphere delay measurement using carrier phase May 20, 2008
One or more atmospheric propagation effects are estimated by using a phase comparison between and upper sideband and a lower sideband of a modulated signal. In one embodiment, one or more propagation effects are estimated by using a phase comparison between an upper sideband and a lower
7375331 Optically blocked reference pixels for focal plane arrays May 20, 2008
Methods for making optically blind reference pixels and systems employing the same. The reference pixels may be configured to be identical to, or substantially identical to, the active detector elements of a focal plane array assembly. The reference pixels may be configured to use the sa
7369606 Phase error detector using I/Q interference cancellation May 6, 2008
A method is presented for estimating a phase error for first (r.sub.I) and second (r.sub.Q) orthogonal signal components spread respectively by different first c.sub.I and second c.sub.Q spreading codes. A cross-despread value IdQ and/or QdI is determined by despreading one signal co
7366121 Method and system for reducing data overhead in a wireless system April 29, 2008
A method and system for compressing an asynchronous transfer mode (ATM) header suitable for wireless ATM systems is provided. The ATM Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) are replaced with four and eight bit pointers, respectively. In addition, Generic Flow
7362240 Replacement avionics display instrument April 22, 2008
A solid-state electronic avionics display instrument includes one or more bar-graph-like displays mounted within a housing in a manner that emulates the manner in which prior electro-mechanical indicator mechanisms have been mounted in such housings so as to indicate a value along a
7359639 Airborne free space optical communication apparatus and method with subcarrier multiplexing April 15, 2008
A free space laser communication system uses subcarrier multiplexing to prepare multiple data communication channels for impressing onto a laser carrier. Sending and receiving terminals mutually track to insure acquisition of the transmitted data signals.
7340024 Parallel fractional interpolator with data-rate clock synchronization March 4, 2008
A circuit for single or parallel digital fractional interpolation of data samples has a fractional interpolator filter, an oscillator for outputting timing signals to the fractional interpolator filter, and a detector loop with a strobe feedback from the oscillator for outputting a f
7329127 Firearm laser training system and method facilitating firearm training for extended range target February 12, 2008
A firearm laser training system of the present invention includes a target assembly, a laser transmitter assembly that attaches to a firearm, a detection device and a processor in communication with the detection device. The system simulates targets at extended ranges and accounts for
7325772 Aircraft heat sink and electronics enclosure February 5, 2008
An aircraft component including a first section adapted to be attached at an exterior surface of an aircraft to close an access opening through the exterior surface; and a second section extending outward from the first section and forming heat transfer surfaces to transfer heat from the
7315126 Folded waveguide traveling wave tube having polepiece-cavity coupled-cavity circuit January 1, 2008
An amplifying device comprises an electron gun emitting an electron beam, a collector spaced from the electron gun, the collector oriented to collect electrons of the electron beam emitted from the electron gun, and an interaction structure interposed between the electron gun and the
7313196 Method and system for baseband amplitude limiting December 25, 2007
A system for baseband amplitude limiting is provided. The system includes a CORDIC vector mode rotator device having an angle accumulator in addition to a gain device and limiter. The system also includes a second CORDIC rotator operating in rotation mode, and is coupled to the limiter.
7312673 Radial power divider/combiner December 25, 2007
A radial power divider-combiner is disclosed. The divider-combiner includes a divider and a combiner. An input signal is provided to a transmission antenna that radiates the input signal inside the divider. Within the divider, the input signal is divided into a plurality of individua
7301985 Pseudo-noise code hopping method and apparatus November 27, 2007
A PN code hopping method for mitigating cross-correlation interference is provided. The method includes the steps of providing a memory device and storing a plurality of PN codes, where each PN code is associated with a useful life cycle. The PN codes are pseudo-randomly accessed and use
7292663 Efficient space-time adaptive processing (STAP) filter for global positioning system (GPS) recei November 6, 2007
A system for efficiently filtering interfering signals in a front end of a GPS receiver is disclosed. Such interfering signals can emanate from friendly, as well as unfriendly, sources. One embodiment includes a GPS receiver with a space-time adaptive processing (STAP) filter. At least a
7274504 System and method for advanced tight coupling of GPS and inertial navigation sensors September 25, 2007
A system and method for generating a navigation solution in high interference and dynamic environments using Global Positioning System (GPS) and inertial measurement unit (IMU) data is described. The system includes an Advanced Tightly Coupled (ATC) tracking processor for a multi-sat
7274412 Stereoscopic imaging assembly employing a flat panel display September 25, 2007
A stereoscopic imaging assembly for converting true visual images of a real-life subject to a stereoscopic image includes a display and an analyzer. The display is preferably a liquid crystal display, which includes first image pixels, second image pixels, and a polarizer. The first
7272124 Acquisition of a synchronous CDMA TDD QPSK waveform using power and timing estimates September 18, 2007
A method and system for using power and timing estimates to acquire frame acquisition of a reverse CDMA carrier signal. The method includes providing at least one remote transceiver device acquiring a forward CDMA carrier signal, and the one remote transceiver device transmitting a r
7268607 Integrating capacitance circuitry for an integrating amplifier and related method September 11, 2007
An integrating capacitor circuit for an integrating amplifier and related methods are disclosed that allow for efficient detection of currents or charges, particularly those produced by pixel cells in a detector image array. By placing a capacitor-connected field-effect-transistor (FET)
7263139 Phase correction for a phase modulated signal with mutually interfering symbols August 28, 2007
A circuit and method for correcting phase of a received phase modulated (PM) signal. The method uses k most recently received data bits, which alternate between in-phase I and quadrature Q bits, as an address for a lookup table 60. The lookup table outputs a phase figure 62 derived from
7262412 Optically blocked reference pixels for focal plane arrays August 28, 2007
Methods for making optically blind reference pixels and systems employing the same. The reference pixels may be configured to be identical to, or substantially identical to, the active detector elements of a focal plane array assembly. The reference pixels may be configured to use the sa
7260109 High bandwidth legacy compatible multiplexer framing formats August 21, 2007
A communication multiplexer device is provided. The multiplexer device includes a legacy port adapted to communicate a legacy data frame format having at least one major data frame. The legacy major data frame includes overhead fields which may include a sync field. The legacy major
7259778 Method and apparatus for placing sensors using 3D models August 21, 2007
Method and apparatus for dynamically placing sensors in a 3D model is provided. Specifically, in one embodiment, the method selects a 3D model and a sensor for placement into the 3D model. The method renders the sensor and the 3D model in accordance with sensor parameters associated
7251455 Techniques for antenna tracking July 31, 2007
A method estimates a signal to noise ratio (SNR) of a received direct sequence spread spectrum (DSSS) signal. Using the estimated SNR, a control signal is determined that is suitable for modifying a position of a directional antenna. The control signal may be used to modify the posit
7243542 Closed loop analog gyro rate sensor July 17, 2007
The present invention provides an apparatus and method for measuring the angular rotation of a moving body. The apparatus comprises an upper sensor layer, a lower handle layer substantially parallel to the sensor layer, at least one dither frame formed of the upper sensor layer, the
7233632 Symbol timing correction for a phase modulated signal with mutually interfering symbols June 19, 2007
A circuit and method for correcting timing of a received phase modulated signal. The method uses k most recently received data bits as an address for a lookup table 60. The lookup table includes reconstructed waveforms from which a timing weighing factor is determined. The received PM fr
7227814 Repairable fiber optic hydrophone assembly June 5, 2007
A re-enterable end-to-end hydrophone assembly which is at least partially transparent, so that the routing of the hydrophone fibers is visible during all phases of assembly and operation. The inventive hydrophone assembly includes a cylindrical sensing mandrel with at least one optical
7227515 System and method for forming images for display in a vehicle June 5, 2007
A system is disclosed that includes a lens system that directs energy from a scene toward a detector and display unit coupled to the detector. The display unit forms an image using information received from the detector. The detector includes an array of detector elements, each detector
7220621 Sub-wavelength structures for reduction of reflective properties May 22, 2007
A method for manufacturing optically-transparent lids includes etching sub-wavelength structures on a surface of a lid wafer. The structures may be arrayed in a hexagonally closed-packed pattern.
7209494 Digital reverse transmission frequency training method for time division duplex (TDD) communicat April 24, 2007
A Time Division Duplex (TDD), Code Division Multiple Access (CDMA) communication system includes a plurality of Customer Premises Equipment (CPE) and an Access Point (AP) that communicate through RF links. A CPE contains a receiver baseband subsystem and a transmitter baseband subsys
7200233 System and method for fast data encryption/decryption using time slot numbering April 3, 2007
A system for fast data encryption/decryption is provided. The system includes a transmitter system having a transmitter direct digital synthesizer (DDS). The DDS includes at least three transmitter pseudo-noise (PN) component code generators PN.sub.x, PN.sub.y, PN.sub.z, where each t
7190711 Linear search system and method for determining Psuedo-Noise (PN) composite phase March 13, 2007
A method and system for determining Psuedo-Noise (PN) composite phase is provided. The method includes providing at least three relatively prime PN component codes and partially correlating a received PN composite encoded signal with one of the PN component codes. The method also inc
7190683 Two-dimensional channel bonding in a hybrid CDMA/FDMA fixed wireless access system to provide fi March 13, 2007
A communications system employs the use of both synchronous CDMA and FDMA to provide a variable bandwidth waveform with multiple bonded transmitters and receivers that are agile in both frequency and PN code to permit a variable bandwidth and variable rate multiple access system. In
7181540 Secure segregation of data of two or more domains or trust realms transmitted through a common d February 20, 2007
A system for transporting data comprising a first domain comprising a first plurality of filters in a first communication channel, the first communications channel including a common portion, the first plurality of filters employing a first plurality of filtering criteria; a second d
7167504 System and method for fast data rate discovery from PN codes January 23, 2007
This invention generates pseudo-noise (PN) codes that map a transmitted data rate into the PN code structure. This invention further then acquires the PN code to automatically discover the transmitted data rate. This invention is operable with communication systems that utilize GPS t
7164733 Method and device for compensating for digital data demodulation phase uncertainty January 16, 2007
A method and system for compensating digital data demodulation phase uncertainty is provided. The method includes the steps of identifying a phase reference quadrant, the phase reference quadrant having a phase reference axis and four quadrants, I, II, III, and IV; receiving known di
7164234 High-power microwave system employing a phase-locked array of inexpensive commercial magnetrons January 16, 2007
A high-power microwave generator employing a plurality of inexpensive commercial magnetron tubes cross-coupled by means of a secondary coupling path between each magnetron output pair, whereby a portion of the output energy from a first magnetron tube is injected into a second magnetron
7161920 High rate, time division multiplexed, multi-MPSK MODEM with imbedded high signal-to-noise ratio January 9, 2007
A novel MODEM and method of operating a MODEM usable in spread spectrum communication utilizing multiple waveforms in orthogonal spread signals imbeds a tracking signal in one of the spread signals for efficient tracking by a receiver so that both spread signals can have wideband cha
7151469 Surveillance system for aircraft interior December 19, 2006
A surveillance system for monitoring activity within at least the cabin portion of the aircraft in order to alert the flight crew within the cockpit of any emergency activity including, but not limited to, highjacking or terrorist activity. A video controller assembly is interconnect
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