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| Number | Title | Issue Date |
| 6275679 | Secure communication using array transmitter The radio transmission circuit comprises 16 antenna elements in a broadside array. A carrier wave is routed to the 16 elements and the phase to each element is adjusted to direct the transmitted wavefront toward a selected receive point. Prior to transmis... | 08/14/2001 |
| 6064332 | Proportional Guidance (PROGUIDE) and Augmented Proportional Guidance (Augmented PROGUIDE) Two new homing guidance laws, designated as proportional Guidance (PROGUIDE) and Augmented Proportional Guidance (Augmented PROGUIDE), have been developed for use against non-maneuvering and maneuvering targets, respectively. These guidance laws are the s... | 05/16/2000 |
| 5574553 | Ladar receiver incorporating an optical amplifier and polarization optical mixer To greatly increase the sensitivity of a Heterodyne Ladar System, the receiver incorporates an optical preamplifier to amplify the ladar return signal prior to detection. This results in an increase in return signal power on the order of 25 dB. Spontaneou... | 11/12/1996 |
| 5574824 | Analysis/synthesis-based microphone array speech enhancer with variable signal distortion A microphone array speech enhancement algorithm based on analysis/synthesis filtering that allows for variable signal distortion. The algorithm is used to suppress additive noise and interference. The processing structure consists of delaying the received... | 11/12/1996 |
| 5557635 | Voice encode/decode subsystem in a system for acquisition of test data using pulse code modulation The encode and decode subsystems use a continuously variable slope delta-modulation (CVSD) approach, with either parallel or serial data transfers. To allow for synchronization with a stable data transfer, the entire subsystem uses the main acquisition sy... | 09/17/1996 |
| 5546083 | Bidirectional repeater amplifier A double diamond configuration of phase shift circuits are coupled via circulators, amplifiers, power dividers, and power combiners. The circuit arrangement serves to amplify signals in either direction while accurately maintaining relative phase shift. T... | 08/13/1996 |
| 5544174 | Programmable boundary scan and input output parameter device for testing integrated circuits Boundary scan testing of devices such as printed circuit boards and multi chip modules, when the needed circuits have not been provided on IC chips by the manufacturer, is accomplished with a diagnostic and testing integrated circuit that performs a bound... | 08/06/1996 |
| 5535128 | Hierarchical feedback control of pulsed laser deposition A hierarchical control PLD system controls deposition processes by feedback means, for industrial production of tribological thin films. PLD process system identification, intelligent feedback control architecture, and implementation for ultraviolet pulse... | 07/09/1996 |
| 5506054 | Ultra high frequency absorbing material capable of resisting a high temperature environment and method for fabricating it This invention involves a method of providing suitable electrical isolation for small metal particles (such as iron) from each other, agglomerating these particles into a larger size, and overcoating the agglomerates to provide environmental protection. A... | 04/09/1996 |
| 5499391 | Digital channelized IFM receiver An instantaneous frequency measurement receiver (IFM) is used at each output of a digital channelized receiver. A Fast Frequency Transform (FFT) is used to form an instantaneous frequency measurement (IFM) receiver at every frequency component. These IFM ... | 03/12/1996 |
| 5497161 | Angle of arrival (AOA) solution using a single receiver A solution to the AOA problem is provided, receiving the data via a plurality of antennas, which uses a switching network to couple the antennas to a single receiver and a single analog-to-digital converter to digitize the incoming signal. It is possible ... | 03/05/1996 |
| 5485390 | Inductive-deductive process design for machined parts In the design of the process to machine discrete mechanical parts, the sequence of removing material is arrived at to ensure that the resulting part is of the correct geometry and finish, and the process is safe, feasible and accomplished in minimum time.... | 01/16/1996 |
| 5477230 | AOA application of digital channelized IFM receiver This system compares the phases from Fast Frequency Transform (FFT) outputs to obtain angle of arrival (AOA) information.... | 12/19/1995 |
| 5465221 | Automated process planning for quality control inspection A computer is used for generating a part inspection plan for a coordinate measuring machine (CMM), in a feature-based rapid design system (RDS), having a Feature-Based Design Environment (FBDE), an Episodal Associative Memory (EAM), Fabrication Planning (... | 11/07/1995 |
| 5461559 | Hierarchical control system for molecular beam epitaxy A multi-featured control system which improves the manufacturing capability of the thin-film semiconductor growth process. This system improves repeatability and accuracy of the process, reduces the manpower requirements to operate MBE, and improves the M... | 10/24/1995 |
| 5429963 | Twin-tub complementary heterostructure field effect transistor fab process This is a fabrication process for complementary III-V HFETs in which devices are built side-by-side in doped-areas, known as "tubs", grown by molecular beam epitaxy on indium phosphide (InP) substrates, or other material systems such as materials grown on... | 07/04/1995 |
| 5426785 | Comparator stack architecture for order statistic filtering of digital imagery This is a circuit design for determining the order statistics of an arbitrary (length and value) string of numbers as the string is acquired. The circuit is intended for use with a system covered by my copending application titled "A High Performance Arch... | 06/20/1995 |
| 5418708 | Constant power load bank The constant power load bank is a flexible tool used for simulating avionics loads such as pulsing radars on a 270 VDC power system. The unique feature of this load bank is that it is designed to realistically simulate an active aperture radar with 0-100%... | 05/23/1995 |
| 5411902 | Process for improving gallium arsenide field effect transistor performance using an aluminum arsenide or an aluminum gallium arsenide buffer layer The incorporation of an aluminum arsenide (AlAs) buffer layer in a gallium arsenide (GaAs) field effect transistor (FET) structure is found to improve the overall device performance, particularly in the high temperature operating regime. Similar character... | 05/02/1995 |
| 5406299 | Hybrid field-sequential display The display combines an ordinary monochrome electronic visual display with a two-primary field-sequential display (FSD). This hybrid system provides full color, high spatial resolution, and high luminance. The FSD provides two of the three color primaries... | 04/11/1995 |
| 5396250 | Spectral estimation of radar time-of-arrival periodicities Disclosed is a method to extract the periodic properties (or Pulse Repetition Intervals (PRIs)) of radar signals whose time-of-arrival at an airborne platform have been time tagged by an Electronic Warfare (EW) receiver. The PRIs are determined using a mo... | 03/07/1995 |
| 5396243 | Infrared laser battlefield identification beacon An Identification Friend or Foe (IFF) system uses CO2 laser identification beacons on ground vehicles such as tanks, in conjunction with an existing (or future) Forward Looking InfraRed (FLIR) detection system on an attacking aircraft or ground... | 03/07/1995 |
| 5373236 | Highly accurate zero crossings for frequency determination The technique to measure the frequency very accurately for electronic warfare (EW) applications, and is simple in hardware, and which can accomplish this goal with a signal with real data (in contrast to complex data). It uses trigonometric identities to ... | 12/13/1994 |
| 5353303 | Technique for increasing the data rate in a spread spectrum data link A method for increasing the bit rate of a data link is to select two additional 31-bit chip code patterns that are orthogonal to the present two chip codes, and to each other. This method will not require any more bandwidth that the present 10 MHz used. T... | 10/04/1994 |
| 5343287 | Integrated atmospheric transverse coherence length/laser radiation angle-of-arrival measurement system The System is a test instrument used to measure the quality of the optical path through the atmosphere. The device measures the atmospheric transverse coherence length, also known as Fried's parameter or the diffraction limited aperture of the atmosphere,... | 08/30/1994 |
| 5336894 | Universal infrared heat source controller The controller for a single infrared source is capable of being programmed to act as a target for an AIM-9 target seeker. Data are read by the controller comprises (a) temperature data, (b) aperture data, (c) shutter-filter data, and (d) missile ID data. ... | 08/09/1994 |
| 5337051 | Approximate zero crossings for frequency determination The technique to measure the frequency very accurately for electronic warfare (EW) applications, and is simple in hardware, and which can accomplish this goal with a signal with real data (in contrast to complex data). It uses a linear approximation betwe... | 08/09/1994 |
| 5326509 | Fabrication of benzbisazole polymers into monolithic articles A method for fabricating a monolithic polybenzbisazole article including the steps of: (a) dissolving at least one benzbisazole polymer in a strong acid at an elevated temperature; (b) transferring the resulting solution to a mold; (c) cooling the solution in ... | 07/05/1994 |
| 5327142 | Frequency encoding circuit in Bragg cell receiver The circuit may be used to encode the channel outputs of a Bragg cell receiver, or other type of channelized receiver. Bragg cell receivers use acousto-optic delay lines to analyze signals such as radar pulses present in the Electronic Warfare (EW) enviro... | 07/05/1994 |
| 5323103 | Frequency measurement receiver with means to resolve two folding frequencies of complex signals This is an arrangement to find two folding frequencies that fold into one frequency bin, which will save hardware. The input frequency in down converted into I and Q channels. Each channel requires one pair (two) of A/D converters. A total of three pairs ... | 06/21/1994 |
| 5315307 | Doppler frequency angle measurement technique The technique allows precise angle-of-arrival (AOA) and radio frequency measurements on non-cooperative radar signals, by exploiting precise phase measurement capabilities of frequency measurement receivers. It is assumed that the intercept receivers with... | 05/24/1994 |
| 5315668 | Offline text recognition without intraword character segmentation based on two-dimensional low frequency discrete Fourier transforms Image analysis and recognition includes reading text, by digitally scanning a surface, locating the printed material in that digital image, and then recognizing words, phrases, or numbers based on their two dimensional, low frequency Fourier harmonics. On... | 05/24/1994 |
| 5293114 | Frequency measurement receiver with means to resolve an ambiguity in multiple frequency estimation In multiple frequency estimation, the bandwidth and resolution of Fast Fourier Transform (FFT) based frequency estimators are limited by A/D converter sampling rate constraints and also by real-time computational requirements. The disclosed configuration ... | 03/08/1994 |
| 5291125 | Instantaneous frequency measurement (IFM) receiver with two signal capability An IFM (Instantaneous Frequency Measurement) receiver is disclosed that can process two simultaneous signals for electronic warfare application. Three IFM receivers are employed (cooperating in the 2 to 4 GHZ range) and have three filters in front of them... | 03/01/1994 |
| 5291146 | Transverse traveling wave amplifier The RF amplifier has a single waveguiding structure extending longitudinally in a direction of propagation of electromagnetic waves, in which density of an injected current flow is not RF modulated, and a transverse E-field component vector of the electro... | 03/01/1994 |
| 5285209 | Angle-of-arrival measurement via spectral estimation of radar time-of-arrival periodicities The method provides the capability to estimate the angle-of-arrival (AOA) of radar pulses with respect to a ground or airborne based platform. It utilizes a spectral estimation technique which extracts the periodic properties of radar signals whose time-o... | 02/08/1994 |
| 5276419 | Air-code magnetic flux guide A device to guide, shape, contain, or concentrate magnetic flux comprises a tube or conduit made of superconducting material to constrain the path of magnetic flux and guide it to a target volume. Below the transition point the material exhibits no resist... | 01/04/1994 |
| 5264957 | Electrically controlled multiple dispersion (zoom) device The optical device can examine a spectrum at low resolution and subsequently choose a portion of that spectrum to be examined at higher resolution, using a single detector array for both spectra. The latter spectrum can be chosen to be arbitrarily anywher... | 11/23/1993 |
| 5262968 | High performance architecture for image processing The logical computer architecture is specifically designed for image processing, and other related computations. The architecture is a data flow concept comprising three tightly coupled components: a spatial configuration processor, a point-wise operation... | 11/16/1993 |
| 5261056 | N-port wide bandwidth cross-link register The cross-link register allows multiple digital processors to pass data and control parameters to a common region. The N-port wide bandwidth crosslink register (WBCR) represents a method for interconnection of N different digital interconnection units (DI... | 11/09/1993 |
