Abstract: The present invention relates to signal processors and processing, and more particularly to apparatus and method for sensing, detection and/or demodulation of frequency hopping signals.

Abstract: The present invention provides a monolithic integrated detector array for detecting both infrared, IR, and millimeter wave, MMW, energy. Elements include an integrated circuit substrate having both IR sensing elements and MMW antenna elements formed within a predetermined area thereon, said IR sensing elements including a first multiplicity of IR sensing elements substantially evenly distributed across the predetermined area of the substrate, said MMW antenna elements including a second multiplicity of antenna elements distributed over the predetermined area with individual antenna elements being located between individual IR sensing elements; and lens means substantially covering the predetermined area for collecting substantially all of the IR energy incident thereon and for distributing collected IR energy to the multiplicity of IR sensing elements, said lens means being adapted to be substantially transparent to MMW energy incident upon the predetermined area.

Abstract: An apparatus for transforming a voice signal of a talker into a voice signal having characteristics of a different person provides apparatus for separating the talker's voice signal into a plurality of voice parameters including frequency components, a neural network for transforming at least some of the separated frequency components into those characteristic of the different person, and apparatus for combining the voice parameters for reconstituting the talker's voice signal having characteristics of the different person.

Abstract: Apparatus for determining position within a beam, comprising pulses of energy transmitted in coded patterns, is achieved by processing the signals received from the beam to generate a value indicative of coarse position within the beam and by interpolation within the coarse position to generate a value resolving fine position within the coarse position.

Abstract: An outer product neural network provides a predetermined number of processing elements for extracting principal components of an input vector. The residual vector of the network when cascaded into a similar outer product neural network provides additional principal components defining a subspace orthogonal to the subspace defined by the principal components of the first network.

Abstract: A monolithic integrated circuit power sensor provides a monolithic integrated circuit substrate a conversion element formed either on or in the substrate for converting microwave energy into heat, an electrically insulating dielectric layer affixed to the conversion element, and an integrated circuit, heat sensitive element formed in sufficiently close proximity to the conversion element to be thermally coupled thereto through the dielectric layer for sensing temperature changes in the conversion element.

Abstract: Improved radar system performance in a jamming environment is achieved by detecting the AM difference frequency produced by the beating of the desired radar signal with the jamming signal and applying same to one input of a balanced modulator while simultaneously applying the received signal (containing both the desired radar signal and the jamming signal) to the other input of the balanced modulator whereby the output from the balanced modulator contains the desired signal but not the jamming signal.

Abstract: The input ports (18) of an imaging compressive receiver (20) receive from a tapped delay line (16) progressively delayed versions of a received signal s(t). Because of the delays, a signal component in the received signal appears at least at one of the input ports (18) of the compressive receiver (20) at a time when the compressive receiver (20) will detect it, even if the undelayed version occurs during a time at which the compressive receiver (20) would ordinarily be insensitive to it. Since the compressive receiver (20) is an imaging device, it provides relatively isolated channels between its input terminals (18) and its output terminals (38). The phase relationships between the delays in these channels remain constant despite changes in environmental factors, however, because the various channels are embodied in a common two-dimensional delay line.

Abstract: A system for storing and deploying a number of elements sequentially in connected but spaced-apart relationship is described. Adjacent elements are joined together temporarily by connectors which overlay adjacent elements. The connectors are bound to the elements by a plurality of cables, one of which is wound around each element and the overlying connectors. One end of each cable is connected to the element around which it is wound and the other end is connected to the next preceding element. When tension is applied between the cable of the first element and the last element, for example, by connecting an underwater tug to the cable and connecting a drogue to the last element, the cables unwind one by one releasing the connectors and extending the elements in a straight line, spaced apart by the length of the connecting cables.

Abstract: A monolithic integrated circuit power sensor provides a monolithic integrated circuit substrate, a conversion element formed either on or in the substrate for converting microwave energy into heat, and a thermally sensitive diode junction formed in sufficiently close proximity to the conversion element to be thermally coupled thereto.

Abstract: An acoustic transducer provides an elongated outer shell made of magnetic material and having a pair of flexural members attached to each other in the elongated direction and having a flexural portion extending normally to the elongated direction and forming a partial enclosure between the two flexural portions, and a magnetic drive located within the partial enclosure and engaging the flexural portions for causing the portions to oscillate flexurally.

Abstract: An apparatus and method for measuring the angles of arrival of a pair of transmission signals relative to a fixed antenna pair simultaneously receiving the transmission signals based upon the phase difference between antennas for each signal and the frequencies thereof includes components for separately squaring the signals received by each antenna, filtering each squared signal for separating a high frequency band and a middle frequency band, first phase correlating high frequency band signals filtered from each squared signal for producing a sum signal of the phase differences between the antennas for received transmission signals, second phase correlating middle frequency band signals filtered from each squared signal for producing a difference signal for the phase differences of the transmission signals received by the antenna pair, determining the phase differences of the transmission signals received by the antenna pair from the sum and difference signals therefor, providing delayed middle frequency ban

Abstract: A semiconductor device is provided of the type having a doped semiconductor region coupled to source and drain electrodes and an elongated control gate contacting the doped region along the length of the gate for forming a nonconducting depletion region across the doped region for preventing current flow therethrough with the gate having a minimized width to reduce contact area with the doped region, wherein the width of the gate is repeatedly reduced along the length thereof for further reducing contact area with the doped semiconductor region.

Abstract: A magnetometer is desclosed in which a gas cell containing atomic vapor is pulse pumped at one of the transitions of the gas in the cell. After the pulse has passed through the gas cell, thereby causing alignment of all the individual atomic moments along the propagation direction of the pulse, a probe beam reads out the Larmor precession frequency of the freely precessing atoms in terms of the frequency of the amplitude modulation of the probe beam caused by the free precession within the gas cell. The system is suitable for laboratory measurements of the absolute value of a magnetic field and for packaging in an expendable battery powered water-born buoy becuase of the low power consumption of the subject system.

Abstract: In order to sense the presence of sound in a remote underwater location, a neutrally buoyant reflector (20) is deployed underwater, and a laser (12) disposed at a remote location aims coherent light at the reflector (20). A detector (24) senses the coherent light reflected from the reflector (20) and compares it in phase with coherent light split from the outgoing beam. The system then provides an indication of the presence of sound by, for instance, amplifying the result of the phase detection to a speaker (26).

Abstract: An apparatus and method for measuring the frequencies of a pair of signals simultaneously present in a composite signal, comprising the steps of includes components for squaring the composite signal, filtering the squared signal for separating a first pass band and a higher frequency second pass band, instantaneously measuring the frequencies of the first and second pass bands and determining the individual frequencies of the pair of signals from the measured frequencies of the first and second pass bands.

Abstract: A monolithic microwave integrated circuit device provides a microwave transmission line with a resistor coupled thereto and a heating element thermally coupled to the resistor but electrically insulated therefrom by a dielectric layer. Heating the resistor with the heating element causes either a change in resistance of the resistor or the generation of noise by the resistor. Either the resistor or the heating element is constructed using monolithic integrated circuit construction techniques on the same circuit substrate with the transmission line.

Abstract: A monolithic microwave switch matrix includes fully monolithic construction for crossovers as well as switches and input transmission lines configured as lumped equivalent transmission lines for reduced power loss. The crossovers include a grounded conductor located between the crossing transmission lines.

Abstract: An apparatus and method for determining the direction of origin of a received transmission signal using a spinning antenna pair generally provides the steps and apparatus for measuring the phase difference between signals simultaneously received, coarsely approximating the direction of origin of the transmission signal, reconstructing a phase difference signal using the measured phase differences and a calculated signal based upon the coarse approximation, correcting the reconstructed phase signal based upon the first derivatives of the reconstructed signal and the calculated signal, and determining the direction of origin based upon the corrected reconstructed phase signal.

Abstract: An apparatus for supporting printed circuit boards during processing provides a peripheral frame, a multiplicity of support members having interfacing flat surfaces defining an imaginary reference plane from both sides thereof and clips for supporting printed circuit boards parallel and in reference to the imaginary plane which clips engage the support members along either of the interfacing surfaces defining the reference plane.