Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 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 transceiver. The first transceiver and the second transceiver are interlaced... | 01/17/2012 |
| 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), and with a phase modulation of the signal to be emitted... | 12/27/2011 |
| 8054214 | Systems and methods for preparing ground-based weather radar information for use in an installation vehicle Systems and methods prepare ground-based supplemental weather radar information for integration with onboard weather radar information. An exemplary embodiment receives ground-based weather radar information from a ground-based weather radar station, the ground-base... | 11/08/2011 |
| 8022859 | Systems and methods for using nexrad information to verify weather radar information Systems and methods distinguish weather radar returns from terrain radar returns. An exemplary embodiment receives a radar return from a weather radar system on board an installation vehicle, receives ground-based weather radar information, compares a location of th... | 09/20/2011 |
| 8009080 | Weather radar and weather observation method A weather radar includes an antenna unit of an active phased array system in which a plurality of antenna elements configured to transmit a radar pulse and receive a reflected pulse are arranged in a vertical direction, a transmission beam formation unit configured ... | 08/30/2011 |
| 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 beam channel and the high beam channel and target range, and for perfor... | 05/24/2011 |
| 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 polarization errors occur at off-boresight angles, which tend to obscure the... | 04/19/2011 |
| 7924211 | Electromagnetic pulse reflector detection method Detecting reflectors of an emitted electromagnetic pulse, using a received signal, by time-sampling the received signal and the emitted pulse at a same sampling frequency, each received sample corresponding to a return-trip distance for the emitted pulse between its... | 04/12/2011 |
| 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 differential propagation phases by estimating the specific differe... | 03/01/2011 |
| 7880665 | System and method for adaptation of a radar receiver in response to frequency drift in a transmission source A system and method for adaptation of a radar receiver in response to frequency drift in a transmission source is disclosed that utilizes a stable local oscillator established at a single, non-fluctuating frequency and compensates for transmission frequency fluctuat... | 02/01/2011 |
| 7843378 | Dynamic and adaptive radar tracking of storms (DARTS) Methods and systems for estimating atmospheric conditions are disclosed according to embodiments of the invention. In one embodiment, a method may include receiving reflective atmospheric data and solving a flow equation for motion coefficients using the reflective ... | 11/30/2010 |
| 7728760 | Method for generating a representation of an atmospheric vortex kinematic structure A method for generating a representation of a kinematic structure of an atmospheric vortex is provided. The method comprises receiving a plurality of signals from a Doppler radar. The signals are reflected at a plurality of pulse volumes. The method also comprises m... | 06/01/2010 |
| 7724177 | Systems and methods for location-based discrimination of turbulence Systems and methods differentiate weather, such as storm cells and/or turbulence regions, based on location relative to a planned flight path of an aircraft. An exemplary embodiment compares a location of the weather with a location of a region of space correspondin... | 05/25/2010 |
| 7714766 | Method of processing a radar image Embodiments of the invention process a radar image arising from a radar antenna, by reading the reflectivity information associated with each pixel forming the radar image, processing the reflectivity information, pixel by pixel, with the aid of a first procedure. T... | 05/11/2010 |
| 7705769 | System and method for presenting wind speed information A system and method for presenting wind speed information in a manner so as to be easily understood and appreciated by viewers of televised weather report presentations and the like. Wind speed information is presented as two or three-dimensional wind speed contour ... | 04/27/2010 |
| 7688249 | Method for determining types of precipitation in the atmosphere A method for determination of precipitation types in the atmosphere is described, wherein an output signal, in particular a radar signal, having a transmitting frequency spectrum is transmitted, reflection signals formed by reflection of the output signals at precip... | 03/30/2010 |
| 7652614 | Ground clutter mitigation using a parametric time domain method Methods and systems are disclosed for investigating a region of interest with a radar. A radar signal is propagated to the region of interest. Sampled time-domain radar data scattered within the region of interest are collected. A likelihood function is calculated w... | 01/26/2010 |
| 7646328 | Versatile constant altitude plan position indicator for radars A method and a system to process radar volume scan data along an azimuth angle of a radar, to interpolate the radar volume scan data taken from adjacent elevation angles along the azimuth angle of the radar to obtain radar data corresponding to a predetermined altit... | 01/12/2010 |
| 7605744 | Method for extension of unambiguous range and velocity of a weather radar A method for extension of unambiguous range and velocity of a weather radar. To avoid pulse overlaying, the pulse repetition time of a single pulse can be extended such that any return echo will arrive at the radar before the next pulse is transmitted. When pulse re... | 10/20/2009 |
| 7583222 | Method for using pulse compression in weather radar A system and method for processing data related to weather phenomena in a meteorological radar system. The method includes receiving an echo signal generated by transmitting a long pulse and employing a mismatched windowed filter on the echo signal such that the ech... | 09/01/2009 |
| 7579977 | Method of measuring the speed of air by doppler radar A method of measuring the speed of air in a zone of the atmosphere by the Doppler effect by means of a radar, the method comprising the steps of transmitting bursts of three pulses at different rates F1, F2, F3; determining respectiv... | 08/25/2009 |
| 7541967 | Sounding transformation and recognition A method for scaling and converting sounding data into physical properties of a scanned medium is disclosed. In one embodiment, sounding data is received and transformed into phase space, where the phase space transformation linearizes the sounding data. The slope a... | 06/02/2009 |
| 7495599 | Simultaneous dual polarization radar system with pedestal mounted receiver The present invention relates to a method and apparatus for simultaneous transmission of horizontal (H) and vertical (V) channels in a dual polarized weather radar. The goal of the invention is accomplished by placing the receiver, duplexer and polarizer equipment a... | 02/24/2009 |
| 7474250 | Compression and transmission of weather data Weather radar reflectivity data is compressed by converting radar data to image pixels. Next, contours are traced from select groupings of the pixels. Control points are derived from the contours. The control points represent a compressed version of the radar data a... | 01/06/2009 |
| 7471234 | Producing improved mosaic of multiple field radar data product to enable improved weather display The system or method reduces the significant degradation of quality in Radar mosaic products that are contaminated by non-meteorological returns. In regions covered by multiple radars, the inventive algorithms utilize an inventive set of coverage-based rules for com... | 12/30/2008 |
| 7439899 | 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 orienta... | 10/21/2008 |
| 7427943 | Method of generating three-dimensional weather information from airborne weather radar imagery A method of displaying real-time, three-dimensional weather information is disclosed. A first representation of a weather event along a first plane is generated from data obtained from a first radar scan. A second representation of the weather event along a second p... | 09/23/2008 |
| 7417577 | Methods of estimating precipitation characteristics A method of estimating precipitation characteristics including acquiring a radar image including at least a vertical plane of a precipitation zone; processing a vertical profile to generate digital signals representative of reflectivity in vertical direction z; inte... | 08/26/2008 |
| 7417578 | Removal of spurious aircraft detections on weather radar A weather radar detects and removes spurious aircraft from a weather radar display by using one of the methods of differentiating radar return length, estimating a vertical gradient of reflectivity, tracking radar returns into regions that are eliminated from the we... | 08/26/2008 |
| 7417579 | Weather radar with significance determination A weather radar system includes processing electronics. The processing electronics sense weather and determine significant weather based upon the altitude of the weather. The altitude of the weather can be compared to a flight path to determine its significance. A d... | 08/26/2008 |
| 7411541 | Systems and methods for presenting vertical weather information on plan view displays Systems and methods for presenting vertical weather information on plan view displays. An example method retrieves weather radar return information stored in a volumetric buffer and determines if a weather anomaly of the retrieved weather radar return information is... | 08/12/2008 |
| 7405693 | System and method for synthesizing data in a radar system A system for synthesizing data received from a weather radar system includes a digital signal processor, a data synthesizer, a convolution filter, and data storage. The digital signal processor digitizes reflectivity data from a radar antenna. The data synthesizer g... | 07/29/2008 |
| 7372394 | Variable loop gain and resolution pulse system and method with point target editing capability A weather radar system is coupled to antenna. The weather radar system includes a processor for generating pulses and for processing return pulses received by the antenna. The processor generates high resolution data from the return pulses. The processor uses the hi... | 05/13/2008 |
| 7369082 | Method and apparatus implementing a scan strategy for automatic high power tube recovery A method of reducing power to an electron emitting cathode comprises the steps of sensing a weather condition; calculating a condition number based upon the weather condition; comparing the condition number to a threshold; and reducing the power to the electron emit... | 05/06/2008 |
| 7369083 | Method for performing bistatic radar functions A bistatic radar system having a transmitter that generates unique signals at spatially independent transmitter degrees of freedom and a receiver that filters the signal at each receiver degree of freedom into a group of signals identical in number to the number of ... | 05/06/2008 |
| 7365673 | Compression and transmission of weather data Weather radar reflectivity data is compressed by converting radar data to image pixels. Next, contours are traced from select groupings of the pixels. Control points are derived from the contours. The control points represent a compressed version of the radar data a... | 04/29/2008 |
| 7355546 | 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 ... | 04/08/2008 |
| 7353690 | Atmospheric refractivity profiling apparatus and methods Apparatus and methods for characterizing atmospheric refractivity and its evolution in time and space utilizing passive radiation emission measurement devices are disclosed. Based on an instrument such as a passive microwave radiometer, ancillary meteorological meas... | 04/08/2008 |
| 7352317 | Data compression system and method for a weather radar system A method of compressing data in a weather radar system utilizes a compression system. Weather radar data associated with graphical images provided on a weather radar display is compressed for downloads or downlinks from the airplane or storage on the airplane. The w... | 04/01/2008 |
| 7339516 | Method to provide graphical representation of Sense Through The Wall (STTW) targets A method to present easily understood images that represent targets that are detected through walls or other opaque barriers is disclosed. This method is particularly well suited for sense-through-the-wall radar systems. One of the main challenges of evolving STTW s... | 03/04/2008 |
