Simulated digital radar system with earth curvature and atmospheric effects
I claim: 1. An earth curvature correction circuit adapted for use in a digital radar landmass system for accumulatively decreasing the terrain elevation of each range point thereof to simulate the eff... Read More
Inventors: Meyer, Jerome W.;, Assignee: The Singer Company (Binghamton, NY) |
Deltic (time compressor) with adjustable multiplication ratio
With the foregoing in mind, it is a principal object of this invention to provide an improved deltic configuration in which the multiplication M varies directly with n and is given by ##EQU1## Another... Read More
Inventors: Thies, Fred W.;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Survivable ground base sensor
The present invention utilizes a hardened radar system wherein the transmitter unit has subarray of elements built into a concrete pyramid. Each subarray transmits a pulse in time sequence that adds c... Read More
Inventors: Randig, George W.;, Assignee: The United States of America as represented by the Secretary of the Air (Washington, DC) |
Servo control with self calibrating preset
What is claimed is: 1. In a marine radar beacon for receiving radar signal having means for generating a reply signal at the frequency of the received signal, the improvement in circuit means for cont... Read More
Inventors: Olivenbaum, James E.; Fischer, Mark C.;, Assignee: Tideland Signal Corporation (Houston, TX) |
FMCW radar system for detecting distance, relative velocity and azimuth of a target obstacle
Accordingly, in view of above-described problems encountered in the related art, a principal object of the present invention is to provide a novel and excellent FMCW radar system which is capable of a... Read More
Inventors: Fujita, Akihiso; Hazumi, Hiroshi; Mizuno, Hiroshi; Nakatani, Hiroto; Naganawa, Hiroshi;, Assignee: Denso Corporation (Kariya, JP) |
Radar terrain signal simulator
A shift-register is provided, with feedback which will provide a pseudo-random output that simulates the appearance of radar returns from given terrain, when fed clock pulses of suitable frequency. By... Read More
Inventors: Heidrich, Arthur J.;, Assignee: General Electric Company (Fairfield, CT) |
Radar simulation for use with a visual simulator
Referring to FIG. 1, a block diagram of a radar image simulation system in accordance with the present invention is shown. The system comprises a geographic data base 10 having an output connected to... Read More
Inventors: Ferguson, Robert L.; Ellis, John R.; Donovan, Kenneth B.;, Assignee: General Electric Company (Syracuse, NY) |
Method and apparatus for providing synthetic vision using reality updated virtual image
From the foregoing, it will be appreciated that a need has arisen for a method and apparatus for providing an accurate image of a scene, even when a portion of the scene is not clearly observable by a... Read More
Inventors: Hoffman, II, Richard G.; Hawkins, Gregory S.;, Assignee: Raytheon Company (Lexington, MA) |
Real-time multi-sensor synthetic environment created from a feature and terrain database using interacting and updatable abstract models
It is an object of the present invention to provide a method for generating abstract models wherein a given set of source data is used to generate a plurality of different models. It is another object... Read More
Inventors: Crocker, III, John A. F.; Deyo, Roderic C.; Isaacson, Paul L.; Olszanskyj, Serge J.;, Assignee: Evans & Sutherland Computer Corp. (Salt Lake City, UT) |
System and method for stimulating night vision goggles
The above-mentioned needs are met by the present invention, which is used to stimulate a pair of conventional night vision goggles in a conventional flight simulation environment through a large dynam... Read More
Inventors: Streid, Harold R.;, Assignee: |
Composite material for dielectric lens antennas
Therefore, it is a principal object of the present invention to provide a dielectric lens antenna composite material which can afford a dielectric lens antenna having a high dielectric constant by con... Read More
Inventors: Imagawa, Shunjiro; Harada, Jun; Nagakubo, Hiroshi; Kawabata, Kazunari; Yamada, Hideaki;, Assignee: Murata Manufacturing Co., Ltd. (JP) |
Heated microwave antenna
I have provided a heated microwave antenna that is ideal for receiving signals from direct broadcast satellites. The antenna is highly weather resistant and it is ideal for northern climates. The uniq... Read More
Inventors: Fleming, Terry L.;, Assignee: Perfect Ten Antenna Co. Inc. (Jacksonville, AR) |
Method and apparatus for de-icing a satellite dish antenna
The present invention provides a method of controlling a snow and frost-melting heating device mounted on or near an antenna, such as a satellite receiver antenna. The method includes the steps of det... Read More
Inventors: Arsenault, Robert G.; Allen, James D.; Kuether, David J.;, Assignee: Hughes Electronics Corporation (El Segundo, CA) |
Antenna for wireless communication equipment
The object of this invention is to provide a highly suitable new antenna configuration which has a good efficiency, in which miniaturization is possible, and in which impedance matching can be done ea... Read More
Inventors: Hikuma, Hideo;, Assignee: Uniden Corporation (Ichikawa, JP) |
Feed network for a dual circular and dual linear polarization antenna
The present invention encompasses a feed network for an antenna system which is operatively associated with a signal source which generates at least one linearly polarized R.F. signal and at least one... Read More
Inventors: Bains, Paramjit S.;, Assignee: Hughes Aircraft Company (Los Angeles, CA) |
Composite multi-beam and shaped beam antenna system
FIG. 1 shows a satellite 30 stationary in a geosynchronous orbit 32 above the earth 34. The satellite 30 carries electronics communication equipment 36 connecting with an antenna system 38 which serv... Read More
Inventors: Hwang, Yeongming; Jakstys, Vito J.;, Assignee: Space Systems/Loral, Inc. (Palo Alto, CA) |
Optical beam former for high frequency antenna arrays
The need in the art for a wideband, true time delay beamforming network for millimeter wave phased array antennas is addressed by the antenna beamforming network of the present invention. The beamform... Read More
Inventors: Lee, Jar J.; Yen, Huan-Wun;, Assignee: Hughes Aircraft Company (Los Angeles, CA) |
Phased array beam controller using integrated electro-optic circuits
The invention is a photonic device for controlling phased array beam direction using optical heterodyning techniques, polarization mixing, and integrated optical circuits to perform high-speed, contin... Read More
Inventors: Thaniyavarn, Suwat;, Assignee: The Boeing Company (Seattle, WA) |
Radar target doppler frequency scintillation simulator and method
The present invention pertains to a radar target Doppler frequency scintillation simulator wherein a pseudo random signal is generated and commutated onto a plurality of output lines, filter means con... Read More
Inventors: Dochow, Claude; Patterson, Mark L.; Sanneman, Richard W.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Dual channel microwave transmit/receive module for an active aperture of a radar system
OF THE INVENTION Referring now to the drawings and more particularly to FIG. 1, disclosed thereat is a block diagram broadly illustrative of an active aperture 1 for a radar system 2 including a plur... Read More
Inventors: Cassen, John W.; Parks, Stephanie A.; Rich, III, Edward L.; Bonadies, Gary N.; Ferrell, Gary L.; Fisher, John S.; Gipprich, John W.; Gornto, John D.; Heffernan, Daniel J.; Herlihy, David A.; Piloto, Andrew J.; Richard, Patrick K.; Strack, David W.; Suko,, Assignee: Northrop Grumman Corporation (Los Angeles, CA) |
Notch fed twin electric micro-strip dipole antennas
The twin electric microstrip dipole antennas are a family of new microstrip antennas. The twin electric microstrip dipole antennas consist of thin, electrically-conducting rectangular shaped elements ... Read More
Inventors: Kaloi, Cyril M.;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Parallel plate lens antenna
In accordance with the present invention, an antenna system is provided for producing a plurality of differently directed beams of electromagnetic energy, each one of such beams being associated with ... Read More
Inventors: Hardie, George S.; Hernandez, Raphael; Maybell, Michael J.;, Assignee: Raytheon Company (Lexington, MA) |
Wide band antenna for mobile communications
It is therefore an object of the present invention to provide a wide band antenna system for mobile communications, in which a dual resonance created by a radiator and a sub-radiator is utilized to pr... Read More
Inventors: Nishikawa, Kunitoshi; Fujimoto, Mitoshi;, Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho (Aichi, JP) |
Annular microstrip antenna element and radial line antenna system employing the same
The present invention has been conceived to overcome the above problems, and therefore aims to provide an annular microstrip antenna element with a simple structure, which enables impedance matching. ... Read More
Inventors: Nishikawa, Kunitoshi; Watanabe, Toshiaki; Ogawa, Masaru; Harada, Tomohisa;, Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho (Aichi-ken, JP) |
Measurement of permittivity and permeability of microwave materials
The invention is described in my thesis titled "Frequency Domain Measurements of Microwave Absorber Design Materials" (AFIT/GE/80D-8), presented to the faculty of the School of Engineering of the Air... Read More
Inventors: Aguirre, Donald G.;, Assignee: The United States of America as represented by the Secretary of the Air (Washington, DC) |
Synthetic aperture radar assembly and a method of creating a radar image of a planet surface using such an assembly
What is claimed is: 1. A synthetic aperture radar assembly locatable on a satellite for radar imaging of a planet surface in swaths, comprising: means for transmitting pulses of electromagnetic radiat... Read More
Inventors: Stoyle, Peter N. R.;, Assignee: British Aerospace Public Limited Company (London, GB2) |
Radar device
We claim: 1. A radar device which transmits an electric wave, receives a reflected wave of said electric wave from an object, and thereby detects said object, said radar device comprising: a plurality... Read More
Inventors: Aoyagi, Yasushi; Fukuchi, Toshihide; Inoue, Kiyoshi; Kohno, Ryuji;, Assignee: The Furukawa Electric Co., Ltd. (Tokyo, JP) |
Method and apparatus for uplink and downlink weight prediction in adaptive array systems
A method and apparatus for predicting information for uplink and downlink beamforming in a wireless communication system employing an antenna array is provided. According to one aspect of the inventio... Read More
Inventors: Flore, Oronzo Dino; Petrus, Paul;, Assignee: ArrayComm, Inc. (San Jose, CA) |
Optical device for non-contact recording
The present invention is directed to providing an optical device, which is an economical facsimile apparatus and requires a minimum space requirement, which is approximately the space requirement of a... Read More
Inventors: Baues, Peter;, Assignee: Siemens Aktiengesellschaft (Berlin & Munich, DE) |
Highly decoupled cosited antennas
It is the primary object of the present invention to provide high interantenna isolation between closely spaced antennas. A related object of the invention is to obtain a very high decoupling (e.g., 3... Read More
Inventors: Campbell, Donn V.; Dubowicz, Palemon W.; Hoverter, Robert T.;, Assignee: The United States of America as represented by the Secretary of the Army (Washington, DC) |
Radio 
