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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 |
| 20120019407 | MULTISTATIC RADAR SYSTEM FOR AIRPORT MONITORING The present disclosure relates to a method for monitoring targets on a runway, wherein emitting modules and receiving modules are alternately distributed along each one of longitudinal sides of the runway. Orthogonal signals are emitted in a narrowband by the emitting m... | 01/26/2012 |
| 20110260911 | Systems and methods for resolving interferometric angle-of-arrival ambiguities due to local multipath reflections Interferometric angle-of-arrival (AOA) ambiguities due to local multipath reflections are resolved by measuring the received phase differences of one or more pairs of antenna elements of the interferometer array, constructing hypotheses from unwrapped phase pairs that c... | 10/27/2011 |
| 20110248882 | METHOD FOR INTERFEROMETRIC RADAR MEASUREMENTS A method for interferometric radar measurements that provides prearranging, at a target observed by the radar, of a transponder that is adapted to perform a frequency shift fd of a radar signal received by the target, and to retransmit a response signal towar... | 10/13/2011 |
| 20110248881 | Radar with High Angular Accuracy, Notably for the Obstacle Sensing and Avoidance Function The present invention relates to a radar device with high angular accuracy. The solution provided by the invention simultaneously combines an interferometer that is accurate but, for example, ambiguous when receiving; and a space colouring mode when transmitting. The co... | 10/13/2011 |
| 20110227783 | DETERMINING AT LEAST ONE COORDINATE OF AN OBJECT USING INTERSECTING SURFACES In an embodiment, a coordinate determiner is operable to identify at least first and second surfaces that each approximately intersect an object, and to determine at least two approximate coordinates of the object from the first and second surfaces, where at least one o... | 09/22/2011 |
| 20110215963 | COMPACT BEACON RADAR AND FULL ATC SERVICES SYSTEM A system and method for a single site beacon transceiver including an omni-directional transceiver, a plurality of directional receiving antennas for receiving a signal, and a digital receiver for processing the signal to determine an azimuth to the source of the receiv... | 09/08/2011 |
| 20100241009 | Systems and Methods for Detecting Movement of a Target A system is disclosed for wirelessly detecting movement of a target. The system comprises a reference oscillator, a transmitter, a receiver, a demodulator, and a processor, wherein: the reference oscillator generates references frequencies for the transmitter, the recei... | 09/23/2010 |
| 20100134344 | RADAR DEVICE AND AZIMUTH ANGLE DETECTION METHOD An electronic scanning radar device that detects an azimuth angle of a target based on a phase difference between a first pair of received waves received by a first pair of antennas separated by a prescribed distance, and combines the first pair of received waves and ge... | 06/03/2010 |
| 20100019955 | Method and Apparatus for Location Determination Using Reflected Interferometry A system (200) and method (400) for determining the location of an object is provided. A plurality of radio transceivers (101,201,203,205) are disposed about a location of interest (221). One or more tags (102) are coupled to an object... | 01/28/2010 |
| 20090207071 | Radar device and target angle detection method A radar device has a plurality of receiving antennas which receive, as a reception wave, a radar wave sent in a predetermined reference direction and reflected by a target; a phase difference detection unit which detects a first phase difference of the reception wave re... | 08/20/2009 |
| 20080030395 | Single bit pseudomonopulse tracking system for frequency agile receivers A system for generating a pseudomonopulse tracking error includes an antenna system (401) that generates a sum antenna beam and a difference antenna beam. The sum antenna beam has a pattern with a peak gain on the boresight axis, and the difference antenna beam h... | 02/07/2008 |
| 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 |
| 20070222667 | METHODS AND SYSTEMS FOR IDENTIFYING HIGH-QUALITY PHASE ANGLE MEASUREMENTS IN AN INTERFEROMETRIC RADAR SYSTEM A method for determining a mechanical angle to a radar target utilizing a multiple antenna radar altimeter is described. The method comprises receiving radar return signals at the multiple antennas, populating an ambiguity resolution matrix with the electrical phase ang... | 09/27/2007 |
| 20060227039 | Instantaneous passive range finding A method and apparatus for use in determining the range in a single time sample from a platform to a target are disclosed. The method includes receiving radiation emanating from the target at two points on the platform in a common time sample; detecting the received rad... | 10/12/2006 |
| 20060220946 | Interferometer-type radar A transmitter for transmitting signals to targets and a receiver for receiving signals reflected from targets are included. The transmitter outputs CW signals for detecting direction and velocity of the target. The receiver performs: a function of receiving signals refl... | 10/05/2006 |
| 20060220949 | Interferometer-type rader A transmitter for transmitting signals to targets and a receiver having a large-diameter array antenna for receiving signals reflected from targets are included. The transmitter has a function of outputting an FMCW signal for detecting direction and velocity of the targ... | 10/05/2006 |
| 20060139207 | Non-blocking switch having carbon nanostructures and Mach-Zehnder interferometer In embodiments of the present invention, a non-blocking quantum interference switch includes a segmented electron wave coupler that splits an electron wave and couples its two parts to two arms of a Mach Zehnder interferometer. A voltage may be applied to an interferome... | 06/29/2006 |
| 20050128126 | Method for interferometric radar measurement It is proposed in connection with a method for the interferometric radar measurement in conjunction with a helicopter operating in accordance with the ROSAR principle (Heli-Radar) that two coherent receiving antennas with receiving channels are associated with a transmi... | 06/16/2005 |
| 20050083225 | Method for drift compensation with radar measurements with the aid of reference radar signals A method of radar measurement by transmitting and receiving radar signals with at least two spatially separated radar systems. The method further includes exchanging reference radar signals between the at least two radar systems to determine measurement-relevant paramet... | 04/21/2005 |
| 20050052316 | Interferometer arrangement for unambiguous determination of an angle of incidence of incident electromagnetic radiation An interferometer arrangement includes an antenna array that receives radiation from a plane wave emitted by a transmitter, the radiation being incident on the array at an angle (θ). The array includes a plurality of antennas that provide output signals to a switching ... | 03/10/2005 |
