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8988273 System and method for detecting concealed explosives and weapons  
A method for detecting hidden explosives or weapons, including transmitting a signal in different polarization channels towards an object, the next stage includes collecting back scattered energy...
8989289 Communicating distinct data over a single frequency using multiple linear polarized signals  
A method and system for transmitting three distinct electromagnetic signals on a same frequency are provided. One or more transmitting devices transmit a first data signal and an inverse of the...
8970424 Radar level gauge system with reduced antenna reflection  
A radar level gauge system for determining a filling level in a tank. The radar level gauge system comprises a transceiver, a horn antenna having a first opening connected to the transceiver and a...
8854250 Off-diagonal element echo power estimator for polarization weather radar  
Embodiments of the invention are directed to improving the sensitivity in polarimetric radar data. In particular, embodiments of the invention improve the sensitivity of such systems with improved...
8830114 Mobile object detecting apparatus  
A mobile object detecting apparatus includes first radiation detecting means; and second radiation detecting means for radiating an electromagnetic wave having the same frequency as the...
8823581 System and method for detecting dangerous objects and substances  
A system and method for detecting dangerous objects and substances are disclosed. According to one embodiment, a method comprises generating a microwave signal that is reflected by a target to...
8774303 Wireless communication method and apparatus using adaptive transmission polarization control  
A wireless communication method and apparatus using adaptive transmission polarization control are provided. The wireless communication apparatus includes an orthogonal polarization antenna, a...
8744031 Device and method for estimating carrier frequency offset of OFDM signals transmitted and received through plurality of polarized antennas  
Provided are a device and method for estimating carrier frequency offset of OFDM signals transmitted and received through a plurality of polarized antennas that may accurately estimate carrier...
8730098 Method for radar detection of persons wearing wires  
Methods are described for radar detection of persons wearing wires using radar spectra data including the vertical polarization (VV) radar cross section and the horizontal polarization (HH) radar...
8686891 Locating device  
The invention relates to a locating device, in particular a hand-guided locating device, with a locating unit (36) for detecting the presence of an object (16, 18) arranged in an examination...
8674875 Scanners  
The invention provides a security scanner that produces a radar profile of a clothed person or another object such as a bag carried by a person at a distance and does not require close proximity...
8665144 Dual-polarization radar processing system using time domain method  
Embodiments of the present invention provide for improved estimation of environmental parameters in a dual-polarization radar system. In some embodiments, environmental parameters can be estimated...
8665137 Radar system with improved angle formation  
A radar system for recording the environment of a motor vehicle includes at least two transmitter antennas for emitting transmission signals, one or more receiver antennas for receiving...
8643536 Radio frequency positioning system for vehicles  
A positioning system for radio frequency devices includes a two-way radio antenna, for vehicles, having a transmitting and a receiving element. Reference antennas have retro-directive arrays which...
8598501 GPS independent guidance sensor system for gun-launched projectiles  
A sensor system uses ground emitters to illuminate a projectile in flight with a polarized RF beam. By monitoring the polarization modulation of RF signals received from antenna elements mounted...
8587473 System and method for roll angle indication and measurement in flying objects  
A method for onboard determination of a roll angle of a projectile. The method including: transmitting a polarized RF signal from a reference source, with a predetermined polarization plane;...
8581773 Dual frequency transmitter  
In embodiments a system to generate a dual frequency, circularly polarized beam of rotating electromagnetic radiation comprises a first radiation source to generate a first radiation beam at a...
8558735 High-resolution radar map for multi-function phased array radar  
A method of operating a multi-function phased array radar system having an antenna array populated with dual-pol antenna elements is described. The method includes selectively controlling...
8462879 Systems and methods for increasing communications bandwidth using non-orthogonal polarizations  
Systems and methods for increasing communications bandwidth using non-orthogonal polarizations are provided herein. Under one aspect, a method of transmitting M independent signals, where M is at...
8416127 Dynamic calibration radar system  
A missile radar system includes a tapered radome covering a front face of a main antenna. A calibration antenna is the combination of a metal tip and an attached one or more radiating or...
8384583 Synthetic-aperture radar system and operating method for monitoring ground and structure displacements suitable for emergency conditions  
A synthetic-aperture radar system, and related operating method, for the monitoring of ground and structure movements, particularly suitable for emergency conditions, characterized by a ground...
8368586 Person-borne improvised explosive device detection  
A system includes a multi-system approach to detecting concealed weapons and person borne improvised explosive devices (PBIED). A first and second radar system operate at different center...
8358236 Wireless sensor apparatus  
A wireless sensor apparatus includes first and second polarization antennas whose polarization surfaces of radiation waves are mutually orthogonal, a first mixer circuit connected to the first...
8358237 Wireless sensor apparatus  
A wireless sensor apparatus controls, in a case where wireless waves are radiated by feeding pulse signals generated by a signal generation circuit to antennas, an operation timing of the signal...
8325084 System for calibration of dual polarization radar with built-in test couplers  
A calibration system for a dual polarization radar system with built in test couplers has been developed. The system includes a dual polarization radar transmitter antenna that generates a...
8305259 Dual-band antenna array and RF front-end for mm-wave imager and radar  
The radar includes a PCB having a top surface and a bottom surface, and a processor mounted on the bottom surface of the PCB. The radar includes a second liquid crystal polymer layer formed on the...
8305255 Dual-band antenna array and RF front-end for MM-wave imager and radar  
The radar includes a PCB having a top surface and a bottom surface, and a processor mounted on the bottom surface of the PCB. The radar includes a second liquid crystal polymer layer formed on the...
8274428 Method for estimating a radar cross-section  
A method for estimating a radar cross-section (RES) of a given object by using a diffraction model of this object. With the model, it is possible to determine a basis adapted to said object on...
8264398 Onboard radar device and program of controlling onboard radar device  
An onboard radar apparatus includes a transmission wave generating unit configured to generate a transmission wave, a vertically polarized wave transmitting antenna configured to vertically...
8258999 System and method for roll angle indication and measurement in flying objects  
A method for onboard determination of a roll angle of a projectile. The method including: transmitting a polarized RF signal from a reference source, with a predetermined polarization plane;...
8258996 Synthetic aperture radar hybrid-quadrature-polarity method and architecture for obtaining the stokes parameters of radar backscatter  
A synthetic aperture radar hybrid-quadrature-polarity method and architecture comprising transmitting both left and right circular polarizations (by alternately driving, at the minimum (Nyquist)...
8248298 Orthogonal linear transmit receive array radar  
A radar system having orthogonal antenna apertures is disclosed. The invention further relates to an antenna system wherein the orthogonal apertures comprise at least one transmit aperture and at...
8199851 Systems and methods for increasing communications bandwidth using non-orthogonal polarizations  
Systems and methods for increasing communications bandwidth using non-orthogonal polarizations are provided herein. Under one aspect, a method of transmitting M independent signals, where M is at...
8144052 Multi-pixel high-resolution three-dimensional imaging radar  
A three-dimensional imaging radar operating at high frequency e.g., 670 GHz radar using low phase-noise synthesizers and a fast chirper to generate a frequency-modulated continuous-wave (FMCW)...
8115668 Object detecting apparatus for vehicle  
An object candidate position detecting apparatus which detects a position of an object candidate includes a unifying mechanism which unifies a plurality of object candidates detected within a...
8098189 Weather radar system and method using dual polarization antenna  
An antenna system for a weather radar system includes a first transceiver and a second transceiver. The polarization of the first transceiver is orthogonal to the polarization of the second...
8085183 Antenna radar system and method for its operation  
In an antenna radar system including a short-range function and a long-range function which is situated separately from the short-range function, the short-range function and the long-range...
8085181 Polarization-modulated transmitter for a weather radar  
Polarization modulated transmitter, in particular for a weather radar, with at least two signal paths (3, 4) to which a radio frequency signal can be fed, and which are connected to a coupler (8),...
8072369 System and method for interrogating a target using polarized waves  
A system and method for communication that could be used in an identification friend or foe system. The method comprises generating a first message by a processor and controlling a beam steerer to...
8022861 Dual-band antenna array and RF front-end for mm-wave imager and radar  
The radar includes a PCB having a top surface and a bottom surface, and a processor mounted on the bottom surface of the PCB. The radar includes a second liquid crystal polymer layer formed on the...
8004458 Means for dual polarization radar with automatic built-in test equipment and calibration  
A calibration system for the receiver of a dual polarization radar system has been developed. The system includes a radar transmitter that transmits signals in horizontal and vertical...
7999212 Precision guided munitions  
A guidance system for actively guiding a projectile, such as a bullet after it has been fired from a gun. The guidance system includes a radar unit that includes a plurality of receiver arrays. An...
7994965 Surveillance apparatus and method  
A surveillance apparatus (100) is provided, said apparatus including a linear sub-array (101) of N omnidirectional transmitter elements (103) and a planar sub-array (102) of M receiver elements...
7986260 Circularly polarized antennas for active holographic imaging through barriers  
Circularly-polarized antennas and their methods of use for active holographic imaging through barriers. The antennas are dielectrically loaded to optimally match the dielectric constant of the...
7973702 Apparatus for position detection using multiple HCF transmissions  
An apparatus a transmitter section, a receiver section, and a processing module. The transmitter section transmits a plurality of high carrier frequency beamformed signals in a loop manner until a...
7948429 Methods and apparatus for detection/classification of radar targets including birds and other hazards  
Methods and apparatus for processing data from a low beam channel, a high beam channel and a weather channel to perform an altitude estimation based upon a target amplitude ratio between the low...
7928894 Phased array radar with mutually orthogonal coding of transmitted and received V and H components  
A polarimetric radar with V and H polarized array antenna elements which transmit a V component modulated by a V code and the H component modulated by an H code orthogonal thereto. Unwanted...
7920089 Variable ratio power divider for a dual polarization radar system with automatic built-in test equipment and calibration  
A variable ratio power divider (VRPD) used for adjusting a calibration signal for a dual polarization radar system has been developed. The VRPD includes an input line that receives a calibration...
7898459 Adaptive specific differential phase in dual-polarization radar  
Systems and methods are provided for adaptively estimating the specific differential phase (Kdp) from dual-polarization radar data in the complex domain. Some embodiments adapt for wrapped...
7893862 Method and apparatus for using collimated and linearly polarized millimeter wave beams at Brewster's angle of incidence in ground penetrating radar to detect objects located in the ground  
A detection system comprises a transmitter unit, a receiver, and a processor. The transmitter unit is capable of transmitting a first collimated beam having a first frequency and a second...
Matches 1 - 50 out of 372 1 2 3 4 5 6 7 8 >