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8184036 |
Method and device for estimation of the transmission characteristics of a radio frequency system
A device and method for estimating the operational effectiveness, status, and protection range of an electronic countermeasures system in real time or near real time are provided. The device and...
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8125369 |
Modular RCS and IR signature generation device and deception method to enhance susceptibility of naval vessels
A modular RCS (Radar Cross Section) and IR (Infra-Red) signal generation device includes: a plastic bag which is normally stored in a folded state, and inflated when gas is introduced into the bag...
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8106810 |
Millimeter wave filters
An electromagnetic radiation filter uses a plurality of dipole antennas to mitigate the transmission of electromagnetic radiation. The dipole antennas can form one or more arrays that scatter...
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8102296 |
Electromagnetic conductor reflecting plate and antenna array thereof and radar thereof and communication apparatus thereof
An exemplary example of the present disclosure proposes an electromagnetic conductor reflecting plate including a perfect electronic conductor and at least two artificial magnetic conductors,...
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8022857 |
Radar reflector
A submarine warfare radar training system 10 includes an underwater vehicle 15 towing a float device 40 and a radar reflective target 45. The radar reflective target 45 is configured as a hollow...
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8018374 |
Radar
A radar having a high time and high spatial resolution and being capable of performing volume scanning with an inexpensive and simple structure, while enabling reduction is size and weight. A radar...
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7999720 |
Camouflage positional elements
One aspect relates to camouflaging an object by affecting a presentation at least partially using at least one positional element based at least in part on a position of the at least one positional...
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7994962 |
Apparatus and method for concentrating electromagnetic energy on a remotely-located object
A method for concentrating radio frequency (RF) radiation on an object located in proximity to a reflector includes the steps of: selecting a target reflector and a level of power for conveying to...
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7973696 |
Thin film emitter-absorber apparatus and methods
Methods and apparatus for providing a tunable absorption-emission band in a wavelength selective device are disclosed. A device for selectively absorbing incident electromagnetic radiation includes...
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7965219 |
Patterned optical material and metamaterial for protection from and defeat of directed energy
A structure is described that includes a plurality of columnar pieces of metamaterial, and a plurality of columnar pieces of non-metamaterial. The columnar pieces are arranged in an alternating...
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7961140 |
Multi-beam radar sensor
A multi-beam radar sensor has a plurality of antenna elements disposed next to each other, a collective lens situated at a distance in front of the antenna elements, and an additional preliminary...
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7948425 |
Expandable signal calibration target
A high frequency signal calibration target deployable in outer space includes an expandable and electrically conductive symmetric structure. The structure may mechanically expand from a stowed...
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7932850 |
Buoyant target with radar reflectivity
A buoyant target comprises an inflatable structure with a drogue chute attached to the periphery of the bottom of the inflatable structure. The drogue chute is an open flexible structure with a...
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7903019 |
Protective device and protective measure for a radar system
A protective device and protective measure for a radar system is provided that includes an active countermeasure by using passive emitter and/or decoys. Decoys are thereby utilized that function...
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7893390 |
Guided missile
A guided missile has a sensor unit, a propulsion unit, and a payload unit. A missile casing forms the outer contour, extends along a longitudinal direction, and accommodates the sensor unit, the...
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7808427 |
Radar system having dual band polarization versatile active electronically scanned lens array
A radar system comprises a first transmit/receive module for a first frequency band and a first polarization, a second transmit/receive module for the first frequency band and a second polarization...
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7804442 |
Millimeter wave (MMW) screening portal systems, devices and methods
A millimeter-wave (MMW) based screening system is provided that may operate with an active sensor, a passive sensor, or in a dual mode using both the active and passive sensors. One or more such...
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7804441 |
Detection of concealed object by standing waves
A process is provided to detect an object within a defined region using standing longitudinal cavity mode waves. The process includes disposing first and second electromagnetic reflectors within...
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7786928 |
Monostatic planar multi-beam radar sensor
A monostatic multi-beam radar sensor for motor vehicles, having a group antenna, a planar lens having multiple inputs, and a homodyne mixer system, wherein the mixer system comprises multiple...
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7755539 |
Dummy apparatus or test method for collision prediction apparatus or its component
Clothing 12 made of a cloth is put on a dummy object 11 that is formed into a human-like shape and made of a material having less reflection of electric wave, in order to form a dummy doll 10....
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7728756 |
Wide area high resolution SAR from a moving and hovering helicopter
A hovering helicopter has a radar transmitter/receiver for transmitting radar pulses for illuminating a target for SAR imaging, and rotor blades for generating lift. Radar reflectors are on the...
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7719462 |
Time-of-flight radar calibration system
A time-of-flight calibration system for a radar-based measurement device is provided. The time-of-flight calibration system includes a target antenna and a waveguide, e.g. a coaxial cable. The...
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7706978 |
Method for estimating unknown parameters for a vehicle object detection system
A method for estimating unknown parameters (pan angle (ψ), instantaneous tilt angle (τ) and road geometry of an upcoming road segment) for a vehicle object detection system. The vehicle object d...
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7675460 |
In-vehicle radar apparatus and method for manufacturing the same
An in-vehicle radar apparatus includes a beam emitting part that emits a beam, a casing that supports the beam emitting part, and a reference unit that is attached to the casing and is equipped...
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7671783 |
Radar reflector
A submarine warfare radar training system 10 includes an underwater vehicle 15 towing a float device 40 and a radar reflective target 45. The radar reflective target 45 is configured as a hollow...
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7642948 |
Reflective layer
A reflective layer for attenuating electromagnetic radiation, the layer comprising at least one reflective component, the latter being selected from the group containing the following substances:...
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7633450 |
Radar altering structure using specular patterns of conductive material
A radar altering structure comprises: a structure; and at least one layer of conductive material disposed at at least one surface of the structure, the layer comprising a plurality of conductive...
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7623059 |
Disruptive media dispersal system for aircraft
A disruptive media dispersal system for aircraft which absorbs and scatters directed energy weapon beams such as tracking lasers and high energy lasers (HELs) is disclosed. The system may include...
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7589663 |
System and method for the measurement of the unambiguous roll angle of a projectile
A system for the measurement of an angle of roll of a projectile is disclosed. The projectile has a casing with a rear end, a front end, and a side wall extending therebetween. The system includes...
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7486226 |
Device and a method for accurate radar level gauging
The invention relates to a system, device, and method for using radar signals to measure the distance (h) to a surface from said device, the device comprising a transmitter and a transmitting...
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7482969 |
Material movement sensing techniques
One embodiment of the present invention provides several electromagnetic radiation reflectors within a volume that contains solid portions subject to movement relative to one another. At least a...
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7427945 |
Positioning system with co-polarized and cross-polarized mapping
A local positioning system using co-polarized and cross-polarized radar mapping is provided. In one embodiment of the method, at least a first electromagnetic pulse having a first polarization is...
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7400287 |
Smart chaff
Missile deflector systems for protecting a vehicle from threats that use an infrared sensor for guidance are disclosed. An exemplary missile deflector system can include, for example, a radiation...
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7385551 |
Polarization sensitive synthetic aperture radar system and method for local positioning
A positioning system includes a passive, isotropic reflecting landmark at a fixed position and a device. The device transmits an electromagnetic pulse having a circular polarization and receives a...
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7369847 |
Fixed cell communication system with reduced interference
A communication system has a high altitude communication device that has an antenna for directing beams to a fixed cell pattern with a polarity of cells. A specific pattern of cells having the same...
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7336216 |
Parachuted radar decoy
A radar decoy having radar reflectors disposed in the interior of the inflated canopy of a descending parachute as a first set of four corner reflectors, and a second set of corner reflectors...
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7333055 |
System and method for microwave imaging using an interleaved pattern in a programmable reflector array
An antenna array for use within a microwave imaging system includes a plurality of reflecting antenna elements, each capable of being programmed with respective phase-shifts in a first pattern to...
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7333044 |
Rocket-powered sensor target assembly
A rocket tube for housing a reloadable rocket motor is connected to a spacer element and a wire-rider element. A sensor target for reflecting radar signals is screwably attached to the rocket tube....
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7327304 |
System and method for minimizing background noise in a microwave image using a programmable reflector array
A microwave imaging system captures a microwave image of a target and minimizes noise in the microwave image using phase differentiation. A reflector antenna array is provided including a plurality...
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7315275 |
Positioning system with intentional multi-path signal
A positioning system includes a device, having an antenna and a reflector with a known position proximate to the antenna, that transmits at least an electromagnetic pulse having a carrier signal...
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7301493 |
Meta-materials based upon surface coupling phenomena to achieve one-way mirror for various electro-magnetic signals
A one-way reflective sensor shield with an increased bandwidth meta-materials coating is provided which substantially reduces or eliminates deleterious electronic signatures and backscattering. The...
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7250901 |
Synthetic aperture radar system and method for local positioning
A positioning system includes a passive, isotropic reflecting landmark at a fixed position and a device. The device transmits an electromagnetic pulse having a circular polarization and receives a...
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7209873 |
Method of analyzing and computing anisotropic turbulent flows
A general, closed, anisotropic kinetic turbulence theory for gases and liquids is based on new solutions of the Maxwell moment equations of the Boltzmann equations. These solutions provide a closed...
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7154429 |
Device for protecting military vehicles from infrared guided munitions
A heat seeking missile decoy device mounted on a military vehicle to change the infrared signature of the military vehicle. The device is at ambient temperature when stored on the military vehicle....
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7053812 |
Recoverable pod for self-protection of aircraft and method of protecting an aircraft using a recoverable pod
In a countermeasure system for an aircraft, a countermeasure module includes a chamber. Countermeasure equipment is housed in the chamber of the countermeasure module. An attachment mechanism...
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6980151 |
System and method for onboard detection of ballistic threats to aircraft
A bi-static continuous wave radar system and related methods for detecting incoming threats from ballistic projectiles includes a remote source of RF illumination, and a local receiver installed in...
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6950021 |
Electronic wall using high-resolution millimeter-wave radar in conjunction with multiple plane reflectors and retroreflectors
An apparatus for detection of any intruder passing through an electronic wall is disclosed. The electronic wall is formed by a millimeter-wave radar positioned at one end of the wall and a...
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6882300 |
Guide marker and visual guide marker device
A guide marker includes a substrate and a radio-wave reflecting unit for reflecting radio waves at certain intensity in all directions in a virtual plane, including the incident direction of the...
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6876320 |
Anti-radar space-filling and/or multilevel chaff dispersers
The present invention consists of the particular geometry of the reflectors or dispersers which constitute the anti-radar chaff cloud. Instead of using conventional rectilinear forms, in the...
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6864824 |
Electromagnetic reflector
The present invention provides an electromagnetic reflector comprising a deployable support frame carrying at least one sheet element designed to form a reflective surface when in the deployed...
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