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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Application No. | Application Title | Issue Date |
| 20120044105 | 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 individual dipoles of each dual-pol antenna element in order to operate the array ... | 02/23/2012 |
| 20110267217 | 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 function having different antenna apertures, means are provided for mutual cross... | 11/03/2011 |
| 20110169682 | LATERAL WAVE RADAR SYSTEM FOR FORWARD DETECTION A forward-looking radar system adapted to detect and identify buried or near surface objects from a moving ground vehicle has been developed. The system incorporates a radar detection system and in one embodiment is mounted on a ground vehicle. The system is adapted to ... | 07/14/2011 |
| 20110095942 | 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 polarization antenna and configured to input a first reception signal receive... | 04/28/2011 |
| 20110063161 | DUAL POLARIZATION RADAR APPARATUS AND INTERFERENCE JUDGMENT METHOD According to one embodiment, a dual polarization radar apparatus includes a received power calculation unit configured to calculate a horizontal polarization received power and a vertical polarization received power, the horizontal polarization received power indicating... | 03/17/2011 |
| 20110050480 | Method and Device For The Spatially Resolved Detection and Reconstruction of Objects By Means of Microwaves A method and a device for the spatially resolved detection and reconstruction of objects using microwaves is described, in which at least one object to be detected is subjected to microwaves that are generated by a plurality of microwave antennas and microwave fractions... | 03/03/2011 |
| 20090262011 | Instantaneous Radar Polarimetry A radar system and method that employs polarization-time diversity in transmitting signals and concurrently processing received reflections from both polarization modes provides information about the scattering matrix of a target without loss of information. Illustrativ... | 10/22/2009 |
| 20080018525 | RADIO FREQUENCY SIGNATURE AUGMENTATION SYSTEM Systems and methods are provided for simulating a target platform. An incoming radar signal is transmitted from a radar source and is received at a first platform. Time of the received radar signal is modulated to generate first and second range extent signals. The firs... | 01/24/2008 |
| 20080012756 | System and method for measuring phase and power variance A device and method for measuring phase and power shifts in a simultaneous dual polarization radar system comprises an access port, a quadrature mixer, and a power detector. The access port is configured to couple to the simultaneous dual polarization radar system near ... | 01/17/2008 |
| 20070290917 | 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 portion of the reflectors are positioned beneath one or more of the solid p... | 12/20/2007 |
| 20070273576 | Multipath resolving correlation interferometer direction finding Apparatus and a method utilizing correlation interferometer direction finding for determining the azimuth and elevation to an aircraft at long range and flying at low altitudes above water with a transmitting radar while resolving multipath signals. The signals from the... | 11/29/2007 |
| 20070236385 | Radar level gauging system A radar level gauging system comprising a microwave unit for transmitting and receiving first microwaves having a first and second distinguishable characteristics, a microwave absorber adapted to be arranged in a bottom region of the tank and adapted to absorb electroma... | 10/11/2007 |
| 20070222660 | Encoded transmitted signals in a simultaneous dual polarization weather system A system for simultaneously propagating dual polarized signals in a polarimetric radar system includes a system for coding at least one of the two signals. The simultaneous dual polarization weather radar transmits signals in both the horizontal and vertical orientation... | 09/27/2007 |
| 20070222661 | Phase shifted transmitted signals in a simultaneous dual polarization weather system A system for simultaneously propagating dual polarized signals in a polarimetric radar system includes a system for shifting the phase of one of the two signals. The simultaneous dual polarization weather radar transmits signals in both the horizontal and vertical orien... | 09/27/2007 |
| 20070205936 | HOLOGRAPHIC ARRAYS FOR MULTI-PATH IMAGING ARTIFACT REDUCTION A method and apparatus to remove human features utilizing at least one transmitter transmitting a signal between 200 MHz and 1 THz, the signal having at least one characteristic of elliptical polarization, and at least one receiver receiving the reflection of the signal... | 09/06/2007 |
| 20070194976 | Radar apparatus and processing method for detecting human carried explosive devices A linear FM pulse radar with Doppler processing of co-polarized and cross-polarized radar return signals isolates the target echo signal content associated with a moving pedestrian to provide high quality target echo data for standoff HCE detection based on polarimetric... | 08/23/2007 |
| 20070152867 | Polarization and frequency diverse radar system for complete polarimetric characterization of scatterers with increased scanning speed A method and apparatus is provided, whereby a scanning, polarization and frequency diverse radar system measures the complete polarimetric characterization of weather targets without loss of scanning speed and without an additional ambiguity in the Doppler velocity beyo... | 07/05/2007 |
| 20070063889 | Phased array radar A phased array radar comprises a first array (2) of detectors (6) in a first dimension; and a second array (1) of detectors (6) in a second, orthogonal, direction. The first array of detectors both transmits (8) and receives (9)... | 03/22/2007 |
| 20070052576 | Object detection method and apparatus Method and apparatus for detecting objects. In one embodiment, a person entering a secured zone is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected. Concealed weapons are detected by mea... | 03/08/2007 |
| 20070024489 | Signal Processing Methods for Ground Penetrating Radar from Elevated Platforms Methods and systems for using ground penetrating radar (GPR) to obtain subsurface images. The depression angle, frequency, and polarization can all be adjusted for the soil conditions at hand. In particular, the depression angle is set at the “pseudo-Brewster angle”... | 02/01/2007 |
| 20070013582 | Radar system having single circularly polarized antenna A radar system includes a transmitter stage for generating a certain transmission signal; a circularly polarized antenna for emitting the transmission signal in a form of a circularly polarized signal, and receiving a reflection signal; a polarizer for isolating the ref... | 01/18/2007 |
| 20060114147 | Calibration method, device and computer program A method for calibrating parameters of sensor elements in a sensor array. The method comprises receiving an output signal of at least two sensor elements signal in reaction to an input signal from a signal source; estimating a cross-correlation between the output signal... | 06/01/2006 |
| 20060097905 | Apparatus for collecting ground radar data with polarization information The present invention concerns an apparatus for collecting ground radar data with polarization information comprising a main body exhibiting structure for moving the apparatus along the ground, a part that rotates in relation to the main body supporting a pair of antenn... | 05/11/2006 |
| 20060049980 | Real-time, cross-correlating millimetre-wave imaging system A method and apparatus are disclosed for forming an image from millimetre waves. A field of view scanned using two geometrically orthogonal, intersecting copolarized fan beams (110, 120) to receive millimetre wave radiation. The received millimetre wave radiation... | 03/09/2006 |
| 20050270228 | Radar system for local positioning A positioning system includes one or more active landmarks and a device. The device transmits an electromagnetic pulse having a polarization and receives return signals over a period of time. The device may preferentially receive return signals having the polarization. ... | 12/08/2005 |
| 20050270231 | Coherent detection of ultra wideband waveforms A general purpose system and method for transmitting and coherently detecting UWB waveforms is predicated on the formation of conjugate pair of UWB waveforms. The in-phase and conjugate quadrature waveforms are orthogonal to each other and have the same power spectrum s... | 12/08/2005 |
| 20050270229 | Positioning system with a sparse antenna array In one embodiment of a positioning system, a transmit element is configured to transmit at least one electromagnetic pulse having a carrier signal frequency. An antenna array with a plurality of receive elements includes at least two receive elements separated by a spac... | 12/08/2005 |
| 20050270227 | 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 frequency. The device receives a return signal over a period of time, where... | 12/08/2005 |
| 20050253748 | EFFICIENT TECHNIQUE FOR ESTIMATING ELEVATION ANGLE WHEN USING A BROAD BEAM FOR SEARCH IN A RADAR A method and apparatus for estimating elevation angle when using a broad search beam such as a cosecant-squared beam is provided. The range of a target detected during a search with a broad beam covering a broad angular search area is determined. Based on the determined... | 11/17/2005 |
| 20050248482 | GENERATING THREE-DIMENSIONAL IMAGES USING IMPULSIVE RADIO FREQUENCY SIGNALS Generating an image matrix includes accessing a round-trip time matrix for a space having points. The round-trip time matrix describes an estimated round-trip time for a signal to travel from a transmit antenna, to a point, and to a receive antenna. Signals reflected fr... | 11/10/2005 |
| 20050225482 | 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 transmitted. A first return signal preferentially having the first polariz... | 10/13/2005 |
| 20050190097 | Freight container monitoring system A system and a method for monitoring a freight container are provided. The method includes the steps of generating a resonant spectrum representative of an initial condition of internal surfaces and contents of the freight container, and saving the resonant spectrum for... | 09/01/2005 |
| 20050168381 | 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 return signal over a period of time. The return signal includes a reflect... | 08/04/2005 |
| 20050093734 | Simultaneous dual polarization radar system A simultaneous dual polarization radar system is disclosed that utilizes a RF power divider to replace the high speed dual polarization switches utilized in current dual polarization radar systems. The disclosed systems allow for transmission and reception in both horiz... | 05/05/2005 |
| 20050088335 | 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 return signal over a period of time. The return signal includes a reflect... | 04/28/2005 |
| 20050083228 | Radar level gauge with antenna arrangement for improved radar level gauging The present invention relates to a radar level gauge (1) comprising an antenna (2), a tank sealing (3), an electronics unit (4) and a waveguide feed (5) between the electronics unit (4) and the antenna (2). The waveguide ... | 04/21/2005 |
| 20050062640 | Radar systems The present invention provides a rotating antenna that can be used in combination with a coded modulated transponder as part of a vehicle positioning and tracking radar system. The antenna transmits a pair of frequency-modulated continuous-wave (FMCW) electromagnetic si... | 03/24/2005 |
| 20050062639 | Sub-surface radar imaging Radar imaging apparatus comprises a single transmit antenna (4) and at least one receive antenna (5), scanning means (e.g. a pantograph) for mechanically scanning the antennas over a surface of interest (16), position providing means (e.g. a compute... | 03/24/2005 |
| 20050017897 | Apparatus and methods for radome depolarization compensation A method of reducing depolarization of a wireless signal passing through an antenna radome. An angle of incidence of the signal relative to the radome is determined. From the determined angle of incidence, at least one offset to signal depolarization attributable to the... | 01/27/2005 |
| 20050017895 | Radar level-measuring device A method and a device for measuring, by means of radar, in an enclosed space (1) in which a liquid (2) is stored, the level of a liquid surface (6), where the method involves the steps: a radar unit (3) mounted on the roof (4) of the e... | 01/27/2005 |
