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| Number | Title | Issue Date |
| 6894636 | Imaging system and method A system for imaging the contents of containers includes an imager arranged to receive millimetre wave radiation from a reception volume through a receive antenna wherein, in use, the container is moving relative to the receive antenna, the reception volume is posit... | 05/17/2005 |
| 6885191 | Radio-frequency imaging system for medical and other applications An imaging system for medical and other applications in which the internal structures of an overall object must be seen without invading or damaging the object. The system works by transmitting electromagnetic waves of single or a multiplicity of frequencies through... | 04/26/2005 |
| 6876322 | Concealed object detection Disclosed are systems, methods, devices, and apparatus to interrogate a clothed individual with electromagnetic radiation to determine if a concealed weapon is being carried. This determination includes establishing data corresponding to an image of the individual a... | 04/05/2005 |
| 6864826 | RADAR APPARATUS FOR IMAGING AND/OR SPECTROMETRIC ANALYSIS AND METHODS OF PERFORMING IMAGING AND/OR SPECTROMETRIC ANALYSIS OF A SUBSTANCE FOR DIMENSIONAL MEASUREMENT, IDENTIFICATION AND PRECISION RADAR MAPPING Radar apparatus and methods of use thereof for imaging and/or spectrometric analysis. The invention employs pulsed radar signals for magnifying, imaging, scale measuring, identifying and/or typecasting the composition of substances by radargrammetric imaging and/or ... | 03/08/2005 |
| 6861972 | Object detection apparatus and method In order to detect and classify objects in a relatively small obstruction-filled space (e.g. underneath a vehicle), a sensing method and apparatus incorporating the use of at least two carefully selected transmission frequencies is provided. In embodiments where the... | 03/01/2005 |
| 6859162 | Underground object locating system without direction ambiguity In an underground object locating system in which a modulated RF signal is applied to the underground object and an emitted signal is detected by a receiver, ambiguity in the direction of current flow in the underground object is resolved by modulating the RF signal... | 02/22/2005 |
| 6856271 | Signal processing for object detection system Methods and apparatus for detecting objects. In one embodiment, a person entering a secured or “Safe Zone™” is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected and measured. In... | 02/15/2005 |
| 6856272 | Methods and apparatus for detecting threats in different areas Methods and apparatus for early detection and identification of a threat such as individuals carrying hidden explosive materials, land mines on roads, etc. are disclosed. Methods comprise transmitting radar signals in the direction of a potential threat, measuring t... | 02/15/2005 |
| 6853327 | Method and system for analyzing overhead line geometries Methods and systems are provided for characterizing an overhead line. A radar signal is propagated in a region that includes at least a portion of the overhead line and a reference object, which may, for example, be a ground surface, growth over a ground surface, or... | 02/08/2005 |
| 6853328 | Airborne biota monitoring and control system A method and system for identifying harmful airborne biota, particularly insects, and including plant material, such as mold spores and pollen, and flying insects and birds and either killing ordisabling the harmful airborne biota is disclosed. Lasers, radar, and ot... | 02/08/2005 |
| 6850183 | Slope monitoring system A slope monitoring system having a radar and a video camera recording images sequences of the slope. A data processing unit performs coordinate registration to align the radar images and the video images. Interferometry is used to detect movement in the slope by gen... | 02/01/2005 |
| 6831590 | Concealed object detection A concealed object detection system for detecting objects concealed on a person includes radar transponders that are each configured and positioned to direct a radar signal at a person and to detect a portion of the radar signal reflected by the person. A processor ... | 12/14/2004 |
| 6825793 | System and method for detecting and locating underground objects A system for detecting and locating an underground object having stationary RF transmitter receivers that define a coordinate system for an area of interest, a sensor adapted to detect presence of an underground object and to provide a presence data, and a mobile RF... | 11/30/2004 |
| 6813324 | Synchronized communication system A synchronized communication system for communicating signals into and from a medium is disclosed. The communication system utilizes a transmitter located at a central station external to the medium, which transmits a low frequency synchronization signal into the me... | 11/02/2004 |
| 6806821 | Apparatus and method for rapid detection of objects with time domain impulsive signals A method and system are disclosed for detecting objects of interest in a target area using ultra wide band (UWB) RF signals. A transmitter and antenna array generate ultra wide band RF impulsive signals that are used to probe a target area that may include an object... | 10/19/2004 |
| 6791734 | Method and apparatus for information modulation for impulse radios A method and apparatus for information modulation for impulse radios are presented in both single-tone and pulse stream configurations. The modulation techniques include combinations of amplitude and phase modulation. The modulation techniques include both digital a... | 09/14/2004 |
| 6791487 | Imaging methods and systems for concealed weapon detection Imaging methods and systems for concealed weapon detection are disclosed. In an active mode, a target can be illuminated by a wide-band RF source. A mechanically scanned antenna, together with a highly sensitive wide-band receiver can then collect and process the si... | 09/14/2004 |
| 6791488 | Method and apparatus for measuring ground height A method and apparatus for determining the distance between an agricultural machine and a surface such as the ground, wherein at least one sensor contactlessly determines the distance between the sensor and the surface. The sensor uses electromagnetic waves to penet... | 09/14/2004 |
| 6788244 | Inspection device for radar absorbing materials The invention is a device for inspecting an assembly including a surface coating containing magnetic radar-absorbing materials on a conductive surface. In detail, the device includes a first system for transmitting an electromagnetic signal to the assembly, which in... | 09/07/2004 |
| 6778128 | Method of locating underground utility lines and an underground utility line A method of locating an underground utility line. A first step involves securing transponders along a length of an underground utility line at regular spaced intervals. A second step involves interrogating the transponders to receive transponder signals. A third ste... | 08/17/2004 |
| 6778127 | Drillstring radar A drillstring radar comprises a measurements-while-drilling instrument for mounting just behind the drill bit and downhole motor of a drill rod. The instrument includes a radar system connected to upward-looking and downward-looking horn antennas. These are used to ... | 08/17/2004 |
| 6771206 | Method for obtaining underground imagery using a ground-penetrating radar A method for using ground-penetrating radar to obtain subsurface imaging. The radar comprises resources for transmitting, receiving and processing signals. In one method embodiment, signals are transmitted from a fixed point relative to the subsurface and with the a... | 08/03/2004 |
| 6765527 | System and method of radar detection of non-linear interfaces A harmonic radar nonlinear junction detector system for detecting concealed weapons, electronics, and other man-made objects utilizing state-of-the art wireless technology, circuit fabrication, signal synthesis, and computer processing techniques to detect and chara... | 07/20/2004 |
| 6762709 | Radar system, method of obtaining image, control method based on image data and monitoring method using milliwaves A plurality of sub-antennas in a two-dimensional plane antenna 11 or the like receive milliwaves from concerned object 20. An A/D converter 12 converts the received signal to digital data. A signal processor 13 executes signal processing ... | 07/13/2004 |
| 6751553 | Utility mapping and data distribution system and method A system and method of mapping underground utilities and other subsurface objects involves one or more of acquiring utility location data using a number of different detectors and sensors, processing the multiple detector/sensor output data to produce mapping data, ... | 06/15/2004 |
| 6741201 | Ground penetrating radar system and method for detecting an object on or below a ground surface Ground penetrating radar system for detecting objects (17) on or below a ground surface (18), comprising at least one transmit antenna (13) having a first foot print (14) at the ground surface, at least one receive antenna (15) hav... | 05/25/2004 |
| 6727841 | Position-adaptive UAV radar for urban environments Bistatic/multistatic radar system concept for purposes of interrogating difficult and obscured targets in urban environments via the application of low-altitude “smart” or “robotic-type” unmanned air vehicle platforms. A significant aspect of the invention i... | 04/27/2004 |
| 6724340 | Detecting system having a coherent sparse aperture A system and method for detecting a target object through foliage includes a transmitter for generating a low-frequency electromagnetic signal. The signal is directed toward a potential target object for reflection from the potential target object. The system furthe... | 04/20/2004 |
| 6720905 | Methods and apparatus for detecting concealed weapons Methods and Apparatus for early detection and identification of a threat, and alerting against detected threats, such as individuals wearing or carrying explosive materials and/or weapons, e.g., suicide bombers and other terrorists, at a great enough distance to lim... | 04/13/2004 |
| 6714153 | Device for electromagnetic detection of geological properties in a well The invention is a well radar for detecting, by electromagnetic wave reflection, resistivity horizons in production zones in oil wells. Transmitter and receiver antennas are combined in a tubing string antenna module. Two dipole transmitter antenna are positioned in... | 03/30/2004 |
| 6714120 | Inductor-capacitor resonant circuits and improved methods of using same A tag which uses radio frequency waves transmitted from a scanning device in order to identify an item to which the tag is attached or with which the tag is associated. The tag includes a first insulating layer having a top surface and a bottom surface, and resonant... | 03/30/2004 |
| 6710736 | System and method for intrusion detection using a time domain radar array A system and method for highly selective intrusion detection using a sparse array of time modulated ultra wideband (TM-UWB) radars. Two or more TM-UWB radars are arranged in a sparse array around the perimeter of a building. Each TM-UWB radar transmits ultra wideban... | 03/23/2004 |
| 6703964 | Interrogation of an object for dimensional and topographical information Disclosed are systems, methods, devices, and apparatus to interrogate a clothed individual with electromagnetic radiation to determine one or more body measurements at least partially covered by the individual's clothing. The invention further includes te... | 03/09/2004 |
| 6701647 | Subsurface imaging system and method A portable structure supports a subsurface imaging system and is moveable over a given imaging site. At least a first antenna of a plurality of antennae is oriented in a manner differing from an orientation of a second antenna of the plurality of antennae... | 03/09/2004 |
| 6700526 | Method and apparatus for identifying buried objects using ground penetrating radar An apparatus for identifying a buried object using ground penetrating radar (GPR) in a system containing at least one GPR sensor, comprises a data processor for detecting spatial correlations in data received from a GPR sensor in the apparatus and an imag... | 03/02/2004 |
| 6690316 | System and method for automated alerting to geospatial anomalies An automated inexpensive system and reliable method for detecting spatial anomalies in real time, allows an unsophisticated operator to detect hidden anomalies efficiently and safely. In a preferred embodiment, an FM-CW radar front-end communicates with a... | 02/10/2004 |
| 6670906 | Method for determining accurately coordinates of a GPR antenna relative to a fixed reference A method and apparatus for determining accurately a coordinate of a transmitting/receiving antenna pair relative to a predetermined reference position. The method includes placing a transmitting antenna in proximity to a reflective strip, transmitting a f... | 12/30/2003 |
| 6667709 | Method and apparatus for detecting leaks in buried pipes by using a selected combination of geophysical instruments A method and apparatus for detecting and locating leaks in buried pipes is disclosed in which ground penetrating radar, induction, acoustic, and vacuum excavation systems are selected based on soil conditions and then employed in selected combinations. Th... | 12/23/2003 |
| 6664914 | Ground penetrating radar A ground penetrating radar includes a signal generator, a return signal processor, a gate and an antenna. The signal generator is a dual frequency synthesizer that generates a stepped frequency master signal and a tracking signal offset by an intermediate... | 12/16/2003 |
| 6661367 | Non-destructive probing system and a method thereof A signal processor includes a unit for forming designated groups from radar reflection signals, a memory unit for storing the designated groups of radar reflection signals individually, a first calculator for calculating a standard background signal SB fr... | 12/09/2003 |
