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| Number | Title | Issue Date |
| 5296860 | Optical fiber based bistatic radar A bistatic radar system includes a transmitting radar site; a receiving radar site; and an optical fiber RF link system for transmitting RF signals from the receiving site to the transmitting site and for transmitting command and control signals from the ... | 03/22/1994 |
| 5294930 | Optical RF stereo An optical RF stereo systems includes multiple remote vehicles, a processing center, and optical RF link systems for transmitting RF signals from remote vehicles to the processing center and for transmitting command and control signals from the processing... | 03/15/1994 |
| 5291196 | Collision-avoidance method for cooperating carriers and onboard optical assembly designed for its implementation A collision-avoidance method for cooperating carriers consists of: transmitting, from each carrier, monochromatic pulsed light waves, coming from at least two wide-field optical transmission devices to cover the space around the carrier and thus define a zone ... | 03/01/1994 |
| 5287104 | Method and apparatus for aiding a landing aircraft A method and apparatus for aiding a landing aircraft. Three differently-colored beams of laser light are produced and transmitted, one of the beams of laser light being transmitted in a plane containing the direction from which the aircraft is approaching... | 02/15/1994 |
| 5280167 | Very high angular resolution laser beam rider detector having a gated image intensifier and a video camera A laser warning receiver (LWR) having an ability to not only detect a low power level laser source, such as a pulse train emitted by a laser beam rider, but to also provide a high angular resolution in determining the angle of arrival of that pulse train.... | 01/18/1994 |
| 5274379 | Optical identification friend-or-foe An identification friend-or-foe system for vehicles wherein each vehicle is provided with a radiation transmitter and a receiver with a detector for detecting radiation transmitted by other vehicles. Each transmitter can transmit a first coded signal whic... | 12/28/1993 |
| 5266955 | Laser-radar type distance measuring equipment A laser-radar type distance measuring equipment for a motor vehicle is shown, which comprises a probe unit including a laser emitting device and a reflected laser receiving device. The probe unit is mounted on the vehicle body. A steering angle sensor is ... | 11/30/1993 |
| 5262786 | Radar test instrument using optical delay means A radar test system for producing multiple delayed replicas of a radio frequency radar signal is provided. A laser diode is adapted to receive the radar signal and generate a modulated optical wave signal carrying the radar signal. The modulated optical w... | 11/16/1993 |
| 5260710 | Vehicular optical-radar apparatus A vehicular optical radar apparatus comprising a light emitting portion for irradiating a signal light on an object ahead and a light receiving portion for receiving a reflected light from the object. At least one of a light emitting lens and a light rece... | 11/09/1993 |
| 5248978 | Underwater guide vehicle for removal of submerged and floating navigational hazards An underwater maneuverable vehicle is presented which carries an explosive charge and can be used for immediate removal or destruction of various menaces to navigation and other underwater hazards. The battery powered vehicle is air dropped from a platfor... | 09/28/1993 |
| 5241315 | Micro pulse laser radar An eye safe, compact, solid state lidar for profiling atmospheric cloud and aerosol scattering is disclosed. The transmitter of the micro pulse lidar is a diode pumped μJ pulse energy, high repetition rate Nd:YLF laser. Eye safety is obtained through bea... | 08/31/1993 |
| 5241314 | Image lidar transmitter downlink for command guidance of underwater vehicle An underwater maneuverable vehicle is presented which carries an explosive charge and can be used for immediate removal or destruction of various menaces to navigation and other underwater hazards. The battery powered vehicle is air dropped from a platfor... | 08/31/1993 |
| 5235455 | Wide bandwidth differential amplifier A differential amplifier for gigahertz bandwidth electrical signals using fiber optics and integrated optical devices has a differential gain which is a function of the electrical to optical and optical to electrical conversion factors. The common mode re... | 08/10/1993 |
| 5227784 | System for detecting and determining range of target vehicle A target detecting and range determining system for an automobile detects a distance between two vehicles travelling in front of and behind each other and includes a range detector using a range determining signal directed toward and reflected by a target... | 07/13/1993 |
| 5223841 | Calibration method and apparatus for collecting the output of an array of detector cells A parallel to serial converter converts parallel detected signals output m a linear array of photodetector cells to an uncorrected serial signal. A comparator compares the uncorrected serial signal from the parallel to serial converter with a previous of... | 06/29/1993 |
| 5220328 | Target motion detecting impulse doppler radar system Radiant energy intermittently emitted from a transmitter is reflected as o pulses from a moving target being interrogated to produce Doppler signals by counting of photons of the echo pulses during time domain intervals between emission from the transmit... | 06/15/1993 |
| 5170168 | Identification of friend from foe device An identification of friend from foe (IFF) device is described containing a radio transceiver (F) which, in addition to being designed for communication purposes, is equipped for transmitting, receiving, and evaluating IFF signals. The IFF device further ... | 12/08/1992 |
| 5164733 | Phase shift detection for use in laser radar ranging systems A laser beam is frequency shifted for use in a laser radar ranging system driving a single optical modulator with multiple drivers to produce several frequency shifted drive frequencies. The shifted beam is transmitted to and from a target via an afocal ... | 11/17/1992 |
| 5130713 | IFF system cooperating with further position finding device An IFF system comprises an interrogation device having an antenna arrangement operating in the HF or microwave range with a relatively broad radiation characteristic for radiation of coded interrogation pulses and for receiving answer signals. The IFF sys... | 07/14/1992 |
| 5095312 | Impulse transmitter and quantum detection radar system Pulses of short duration are radiated by an impulse radar transmitter wit time domain intervals under control of a clock to monitor a moving target from which echo pulses are reflected. The echo pulses received are measured by a quantum detector in terms... | 03/10/1992 |
| 5083130 | Pulse radar and components therefor A pulse radar for operation at 94 GHz and higher frequencies is shown to include an antenna, a diplexer and first detector that are each optically fed so that radio frequency signals may be, when transmitting, passed through the diplexer to the antenna an... | 01/21/1992 |
| 5077557 | Surveying instrument with receiver for satellite position-measuring system and method of operation A surveying instrument for satellite position-measuring includes, a range finder (2), which is preferably non-contact-measuring and tiltable, combined with a satellite receiver (1) in a geometrically unambiguously defined relative position. These two inst... | 12/31/1991 |
| 5051754 | Optoelectronic wide bandwidth photonic beamsteering phased array A transmit/receive circuit for each of the antenna elements of a radar phased array including an optical fiber true time delay circuit responsive to an electrical RF signal for providing an optical signal having a controlled time delay, an optical fiber f... | 09/24/1991 |
| 4975705 | Target detector A target detector (1) for detecting targets provided with transmitter means (3, 5) for simultaneous generation of different electromagnetic waves having different frequencies which are transmitted by means of an emission and detection device (2). The targ... | 12/04/1990 |
| 4932777 | Electro-optical spin measurement system An electro-optical spin measurement system for a spin model in a spin tunnel includes a radio controlled receiver/transmitter, targets located on the spin model, optical receivers mounted around the perimeter of the spin tunnel and the base of the spin tu... | 06/12/1990 |
| 4929956 | Optical beam former for high frequency antenna arrays A wideband, true time delay antenna beamforming network 10 for millimeter wave phased array antennas is disclosed herein. The beamforming network 10 of the present invention includes a laser 30 for generating a beam B of electromagnetic energy. The beamfo... | 05/29/1990 |
| 4929951 | Apparatus and method for transform space scanning imaging An image of a target (11) is produced by illumination of the target (11) with overlapping fields (18, 20) of wave energy, such as coherent light, producing an interference pattern (22) moving across the target. At least one pair (12) of sources (14, 16) w... | 05/29/1990 |
| 4866781 | Method and means of identifying objects with retro-reflected light An optical system for determining if a target object is an object of a first kind, including means for illuminating the target object along an incident path with coherent light of a selected nature means, for retro-reflecting coherent light from an object... | 09/12/1989 |
| 4837575 | Identification system A secure identification system for identifying a potential target in a battlefield environment as being either a friend or a foe is disclosed. An interrogator produces two interrogation pulses, such as laser flashes, aimed at the target and separated from... | 06/06/1989 |
| 4820041 | Position sensing system for surveying and grading A position sensing apparatus and method useful for surveying, marking, and grading implement sensing and control is disclosed. The position sensing apparatus includes two laser reference stations, each of which projects a laser beam that periodically swee... | 04/11/1989 |
| 4808999 | Towed decoy with fiber optic link A rf decoy for use with rf repeater devices, transponders, noise jammers and other jamming devices. The decoy is adapted to be towed behind an aircraft using a tow line which incorporates a fiber optic link through which signals are transmitted. The devic... | 02/28/1989 |
| 4755818 | Aircraft collision warning system An aircraft collision warning system in which a low power pulsed laser sym projects narrow bandwidth radiation into 4π steradians around an aircraft and a matched, narrow bandwidth receiver system, with a 4π steradian field-of-view which detects such r... | 07/05/1988 |
| 4634230 | Multi dimensional instantaneous optical signal processor A 3 or more - dimensional optical processor for simultaneously processing ree or more parameters from a coherent emitter via an acoustic Bragg cell. For a 3-D processor, two separate antenna arrays (azimuth and elevation) are connected to excite two sets ... | 01/06/1987 |
| 4623890 | Apparatus for compensating non-linearities in frequency-modulated signal A "passive interrogator label system" (PILS) comprises an interrogator for transmitting an interrogation signal, one or more "labels" or passive transponders which produce a reply signal containing coded information in response to the interrogation signal... | 11/18/1986 |
| 4456912 | High energy microwave defense system A defense system wherein a radar intercepts and follows a target and includes an antenna array and a low level source of microwave energy for exciting the elements of the array to produce radar returns and define the path. A microwave storage reservoir is... | 06/26/1984 |
| 4333077 | Device for distance acquisition in a radar system A device for distance acquisition in a radar system, especially a tracking system, comprises a surveillance radar with a mobile directional antenna whose direction is known at each instant, a tracking unit whose line of sight is also known at each instant... | 06/01/1982 |
| 4157544 | Hybrid terminal assist landing Control of multiple remotely piloted vehicles provided through a system ced the Hybrid Terminal Assist Landing. This system, also referred to as HYTAL, is composed of two principal subsystems, an RF approach control subsystem and a precise optical landin... | 06/05/1979 |
| 4015258 | Weapon aiming system A gun aiming system having target ranging means, wherein the operator observes the position of backscattered radiation from a bullet or bullets at the target range relative to a simultaneous visually observed target position. A diverged laser beam is refl... | 03/29/1977 |
