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| Number | Title | Issue Date |
| 7460051 | Radar reflector A radar reflector which can be deployed from an aircraft and is intended to fly freely after deployment, and which includes multiple reflector surfaces that are essentially plane in an operative state and which issue in pairs in opposite directions from an essential... | 12/02/2008 |
| 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 disposed on the exterior of the canopy integral with the first set of corn... | 02/26/2008 |
| 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. The sensor target is provided with a plug for effectively sealing on... | 02/19/2008 |
| 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. When a heat seeking missile is fired at the military vehicle, the de... | 12/26/2006 |
| 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 allows for releasable attachment of the countermeasure module to an aircra... | 05/30/2006 |
| 7042416 | Dielectric resonator antenna with mutually orthogonal feeds A multi-polarisation dielectric resonator antenna (1) having three mutually orthogonal feeds (5a, 5b, 5c) displaying C3V point group symmetry is disclosed. The antenna (1) may be operated so as to de... | 05/09/2006 |
| 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 plurality of combinations of plane reflectors and retroreflectors placed alon... | 09/27/2005 |
| 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 radio waves, the radio-wave reflecting unit being provided in the surfa... | 04/19/2005 |
| 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 state, wherein the support frame comprises a band that is suitable for be... | 03/08/2005 |
| 6791486 | Unfoldable electromagnetic reflector The present invention relates to a device forming an electromagnetic reflector comprising a deployable support frame (100) carrying at least one cloth element (200) designed, in the deployed state, to form a reflective surface, the device being charact... | 09/14/2004 |
| 6742903 | Arrangement of corner reflectors for a nearly omnidirectional return An array of corner reflectors is used to provide a retro-reflector for a large range of incident angles. A novel orientation of the individual corner reflectors is used. This allows the interior of a first corner to remain visible while the interior of a second corn... | 06/01/2004 |
| 6683555 | Fast deploy, retrievable and reusable airborne counter-measure system A fast deployment and retrieval system permits the rapid deployment of a decoy in seconds in response to an incoming threat, thus eliminating the necessity of pre-deployment, with retrieval permitting reeling in and deployment of the decoy a number of tim... | 01/27/2004 |
| 6559790 | Broadband passive moving target simulator The invention is a radar decoy which electronically simulates objects by generating radar detectable signals over the entire microwave frequency range. The simulator includes a series of tuned, spaced diode networks for generating carrier suppressed doppl... | 05/06/2003 |
| 6466157 | Electronic fence using high-resolution millimeter-wave radar in conjunction with multiple passive reflectors An apparatus for the detection of any intruder passing through an electronic fence is disclosed. The electronic fence is formed by a millimeter wave radar positioned at one end of the fence and a plurality of reflectors placed along the floor of the fence... | 10/15/2002 |
| 6225940 | Radar reflecting system and method for small water craft A detection system for small water craft, such as a kayak. Radar reflective material is incorporated in the surface of the kayak or other water craft, and also is incorporated in surface areas of water craft accessories, such as cushion, life vest or padd... | 05/01/2001 |
| 6061012 | Rotational handy radar reflector Three reflector plates comprising: a lateral reflector plate having two half plates each opposingly placed across a rotation supporting shaft introduced therebetween, a longitudinal reflector plate having two half plates each opposingly placed across the ... | 05/09/2000 |
| 5826168 | Near video-on-demand signal receiver A video signal receiver receives a plurality of video channels simultaneously carrying, offset by a transmission interval, a single video program, selects one channel from which to obtain the program for display to a user, and achieves a pause function in... | 10/20/1998 |
| 5751238 | Active corner reflector An apparatus and method for providing small size, high gain corner reflection of radio frequency signals for use in military and commercial applications. Conventional corner reflector practice is combined with electronic amplifying reflection devices such... | 05/12/1998 |
| 5680136 | Electrically adjustable microwave reflector and application as an electromagnetic decoy A microwave radar reflector includes three, substantially planar networks whose reflectivity or transmissivity may be controlled. The three networks are arranged as a trihedron with an open angle. An additional network, whose reflectivity or transmissivit... | 10/21/1997 |
| 5589981 | Retroreflector target for laser ranging Retroreflective target for laser ranging embodying at least one hollow cube corner retroreflector constituted by three reflective surfaces which are substantially planar and perpendicular to each other and intersect at three edges which are substantially ... | 12/31/1996 |
| 5570230 | Retroreflector for laser geodesy with omnidirectional correction of speed aberrations A cube-corner retroreflector for laser telemetry corrects speed aberration δ and has three substantially orthogonal mirror surfaces defining three substantially orthogonal edges converging at an apex. Each edge is associated with the surface substantiall... | 10/29/1996 |
| 5508704 | Method and apparatus for modulating a doppler radar signal There is disclosed herein a system for reflecting electromagnetic radiation emanating from a doppler-based radar source toward the source whereby at least a portion of the difference between the emanating and reflected signal is continuously varied betwee... | 04/16/1996 |
| 5501724 | Coating composition for attenuating reflection of electromagnetic radiation A coating composition for the attenuation of the reflection electromagnetic radiation and particularly electromagnetic radiation have a wavelength of greater than 800 nm including the near infrared is described. The composition comprises a chromophore cap... | 03/26/1996 |
| 5493301 | Spin determination of KE projectiles A technique for determining the spin history of kinetic energy penetrator projectiles. The method employs a special dihedral plug fitting in the rear (tracer well) of the penetrator projectile that produces a modulation of the tracking radar's signal. Thi... | 02/20/1996 |
| 5474264 | Low mass velocity-aberration correcting retroreflector geodetic satellite A spacecraft for geodetic applications designed to travel along a trajectory in an orbital plane around a planet, embodying at least one cube corner retroreflector designed to face the planet at least temporarily and having an apex, a normal, and three fa... | 12/12/1995 |
| 5459468 | Pulsing radar reflector An apparatus for use, for example, as a runway radar signal reflector, for reflecting incoming radar signals, which includes a reflector for reflecting the radar signals, a chamber through which the incoming signals pass on the way to the reflector, and a... | 10/17/1995 |
| 5319373 | Method and apparatus for determining ship position in a television image Apparatus for detecting the position of a vessel in a broadcast image of the radar scan in a radar monitored area includes a television monitor for displaying a broadcast image of a radar scan of the area, and a controllable reflector for varying reflecti... | 06/07/1994 |
| 5294935 | Remote radar phase calibrator A remote radar phase calibrator that provides radar phase measurement and libration. A trihedral or dihedral reflector placed in the radars field of view provides an amplitude calibrated phase stable signal to the radar. Movement of the reflector head-on ... | 03/15/1994 |
| 5208601 | All-weather precision landing system for aircraft in remote areas An all-weather aircraft landing system includes a plurality of ground based passive 90° dihedral reflectors for producing two-bounce reflected signals without ground reflections, and an airborne radar system which may transmit and receive "same sense" ci... | 05/04/1993 |
| 5134413 | Segmented cylindrical corner reflector An even-bounce reflector for calibrating the orthogonal polarizations of a radar system. A segment of a cylindrical reflector is fixed to a flat plate reflector with the angle between the segment of a cylinder and a flat plate being substantially 90 degre... | 07/28/1992 |
| 5097265 | Triangular target boat reflector An array of twenty corner reflectors with each corner reflector consisting f three mutually perpendicular reflecting planes whose intersection lie at a common point. The twenty corner reflectors are, in turn, configured to provide omni-directional reflecti... | 03/17/1992 |
| 4996536 | Radar reflectors An array of reflectors of electromagnetic waves comprising a plurality of trihedral reflectors (10 to 17) arranged about a vertical axis (21) with each reflector orientated about its major axis (22) so that the plane bicseting the angle between two panels... | 02/26/1991 |
| 4990918 | Radar reflector to enhance radar detection A radar reflector provides an enhanced radar cross section pattern in one plane and this improved radar detectability in that plane. The radar reflector comprising a trihedral corner reflector arrangement having three planar faces at right angles to each ... | 02/05/1991 |
| 4924228 | Aircraft construction An aircraft structure for the minimization of microwave energy reflection from the aircraft back to a receiver. The provision of structural configurations and materials operate to reduce microwave energy reflection toward its source or another receiver lo... | 05/08/1990 |
| 4843396 | Trihedral radar reflector A new type of passive trihedral corner reflector is described which rotates the polarization of a reflected microwave beam by 90° and thereby permits a reflected radar beam to be more easily distinguished by the interrogating radar system from the random... | 06/27/1989 |
| 4823131 | Radar reflector A radar reflector (4, 5) comprises a hollow, generally spherical or conical radar transmitting housing (6) containing a radar reflecting assembly (10) having a number of trihedral cube corner reflecting elements arranged in strings one above the other and... | 04/18/1989 |
| 4785301 | Method for producing a radar reflector A method for producing a spherical radar reflector containing triple reflectors and composed of identically shaped eighths of a sphere is described. The eighths of the sphere consist of foam material and their plane surface, which are in contact with each... | 11/15/1988 |
| 4733236 | Space target with multi-spectral energy reflectivity A reflecting target device usable in space or on earth in the testing and simulation of weapons and other energy radiating space hardware. The disclosed embodiment includes an icosahedral reentrant cavity structure providing both infrared and radio-radar ... | 03/22/1988 |
| 4724436 | Depolarizing radar corner reflector A corner radar reflector that backscatters cross-polarized returns from a linearly polarized source is formed by three mutually perpendicular surfaces forming a concave structure. At least one of the surfaces has a depolarizing characteristic. The depolar... | 02/09/1988 |
| 4647926 | Warning system for microwave landing system airborne receiver A system to provide warning whenever unreliable data is being received by an airborne receiver for a microwave landing system. The received data is tested against certain criteria to determine validity. The received data is also tested to determine whethe... | 03/03/1987 |
